Questions Asked on
November 27, 2012

  1. Math: Algebra

    1. Which method would be the simplest way to solve the system? 7x + 5y = 19 –7x – 2y = –16 A.) graphing B.) substitution C.) elimination D.) distributive I think it is C.

    asked by Timothy
  2. Physics

    A student sits on a rotating stool holding two 3.4-kg objects. When his arms are extended horizontally, the objects are 1.0 m from the axis of rotation and he rotates with an angular speed of 0.75 rad/s. The moment of inertia of the student plus stool is

    asked by Jessica
  3. Algebra 2

    Suppose you invest $500 at an annual interest rate of 8.2% compounded continuously. How much will you have in the account after 15 years?

    asked by Deavan
  4. Math Essentials

    How many ways can an IRS auditor select 4 of 9 tax returns for an audit?

    asked by Amber
  5. Chemistry Lab

    chemical equation for saponification of methyl salicylate in 6 M NaOH. C8H8O3 + NaOH ---> C7H6O3Na + CH3OH + H2O is this the right reaction? is saponification like hydrolysis? what is the hydrolysis of methyl salicylate in 6M HCL? C8H8O3 + HCl --->

    asked by 657
  6. physics

    A 66 kg human sprinter can accelerate from rest to 11 m/s in 3.4s. During the same interval, a 35 kg greyhound can accelerate from rest to 20 m/s. Compute (a) the change in kinetic energy of the sprinter. (b) the change in kinetic energy of the greyhound.

    asked by Anonymous
  7. Science

    What fraction of the thickness of the thickest continental crust is the thickness of the oceanic crust? Give your answer as a reduced fraction.

    asked by Kai
  8. physics

    A 160kg horizontal beam is supported at each end. A 330kg piano rests a quarter of the way from one end. What is the vertical force on each of the supports?

    asked by Melissa
  9. chemistry

    0.2688 of a monoprotic acid neutralizes 16.4mL 0f 0.08133 M KOH. Calculate the molar mass of the acid in units of g/mol

    asked by alejandra
  10. AP Chemistry

    iron has a density of 7.86 g/cm3 and crystallizes a body centered cubic lattice. Show that only 68% of a body centered lattice is actually occupied by atoms, and determine the atomic radius of iron

    asked by Shayla
  11. science

    In cattle, red hair and white hair are codominant. Cattle with both white hair and red hair are what? please help! thanks!

    asked by sarah
  12. Physics

    Find an expression in terms of M, mu, and theta for the speed of waves on the string.Express your answer in terms of the variables M, mu, theta, and appropriate constants. The picture shown is just of a block with mass m on an inclined frictionless surface

    asked by Mel
  13. Math: algebra 1

    3. Which method would be the simplest way to solve the system? y =1/2 x 2x + 3y = 28 A.) graphing B.) substitution C.) elimination D.) distributive I think it is B.

    asked by Timothy
  14. English 4

    How does nature in Wordsworth's poetry differ from nature in Byron's description of the Byronic hero?

    asked by Monica
  15. Chemistry

    Calculate the maximum mass of calcium metal that should be used in an equivalent mass determination, with a 100 ml gas measuring tube for collection. Assume 80 ml of hydrogen gas at standard conditions for the purposes of calculation.

    asked by Brit
  16. physics

    What is the intensity in watts per meter squared of 85.0 db sound?

    asked by Jason
  17. physics

    a football player runs at 8 m/s and plows into a 80 kg referee standing on the field causing the referee to fly forward at 5 m/s. if this were a perfectly elastic collision, what would the mass of the football player be?

    asked by celeste
  18. calculus

    Robin randomly selects a number between 1 and 20. What is the probability that the number selected is the square of a natural number? 1/2 3/20 3/10 1/5 1/3

    asked by kiandra
  19. math

    the little town arts center charges $21 adults, $14 seniors, and $6 for children under 12 for their live performances on sunday afternoon. This past sunday, the paid revenue was $9486 for 718 tickets sold. there were 44 more children than adults. How many

    asked by hira
  20. Chemistry

    Briefly explain what the consequense would be if excess 6M NaOH solution instead of ^m NH3 solution were used to separate Fe3+ and Al3+ ions from Ca2+, Cu2+,and K+ ions at pH 9-10.

    asked by Cherie
  21. statistics

    How many ways can a person select 6 candy bars from a list of 10, and 6 snacks from a of 12?

    asked by Bonnie
  22. chemistry

    A 1.70 g sample of a certain metal reacts with acid to liberate 380 mL of hydrogen gas, when collected over water at 20 Celsius and over 720 torr. What is the equivalent mass of the metal?

    asked by Brit
  23. mattttthhhhhhh

    Problem: how many bricks 3.75 in. Wide × 8 in. Long are required to cover a patio 13 ft. 6 in. Wide by 18 ft 9 in. LonStep 1. First, find the total width & length of the patio in inches. Step 1a. Convert the portion of width and length that is expressed

    asked by kaykay
  24. trigonometry

    A plane is headed due west with an air speed of 300 mph. The wind is from the north at 80 mph. Find the bearing for the course and the ground speed of the plane.

    asked by mikey
  25. Physics

    A string is wound around a solid cylindrical spool of mass 9.7 kg and radius 0.1 m and is tied to the ceiling. If the spool is released from rest and rolls on the string, and the distance to the floor is 6.14 m, how long will it take the spool to hit the

    asked by Sian
  26. Poetry

    2. Which of the following lines from the poem includes an example of alliteration? (1 point) Waiting, huddled close together Our food was gone. Our fuel was low. Amundsen had reached the Pole. We had come pursuing glory

    asked by Jane
  27. Math: algebra 1

    6. In which quadrant does the solution of the system fall? y = x – 1 y = –3x – 5 A.) I B.) II C.) III D.) IV I think it is c.

    asked by Timothy
  28. math

    susan throws a softball upward into the air at a speed of 32 feet per second from a 8 foot platform. the distance upward that the ball travels is given by the function. d(t)=-16t^2+32t+8. What is the maximum height of the softball? how many seconds does it

    asked by gabby
  29. chem

    Endothermic reaction equilibrium: BiCl3(aq) + H2O(g) = BiOCl(s) +2HCL(aq) + 2 HCl at a point at which the sollution is colorless and a small minute amoount of BiOCl(s) is observed. for the folowing questions 1to 5: a. state which way the reaction shift in

    asked by Audrey12
  30. physics

    A box with a volume V = 0.03 m^3 lies at the bottom of a lake whose water has a density of 103 kg/m^3. (a) How much force is required to lift the box, if the mass of the box is 100 kg? (b) How much force is required to lift the box, if the mass of the box

    asked by lisa
  31. math

    Problem: how many bricks 3.75 in. Wide × 8 in. Long are required to cover a patio 13 ft. 6 in. Wide by 18 ft 9 in. LonStep 1. First, find the total width & length of the patio in inches. Step 1a. Convert the portion of width and length that is expressed

    asked by kaykay
  32. College Chem 1

    a chemistry handbook lists the solubility of NaI as 184 per 100mL of H2O at 25 degrees Celcius. 1) How many moles of NaI can be dissolved in 100mL of H2O at 25 degrees Celcius? 2) What would be the molarity of a saturated aqueous solution of NaI prepared

    asked by Anonymous
  33. Physics

    How do you determine the displacement of a graph with lots of areas of displacement, do you add them all together?

    asked by Anonymous
  34. Finance

    Assume the economy consisted of three types of people. 50% are fad followers, 45% are passive investors who hold the market portfolio, and 5% are informed traders. The portfolio consisting of all the informed traders has a beta of 1.5 and an expected

    asked by Jasper
  35. Physics

    Part A: A cardinal (Richmondena cardinalis) of mass 4.50×10^−2 kg and a baseball of mass 0.142 kg have the same kinetic energy. What is the ratio of the cardinal's magnitude p(c) of momentum to the magnitude p(b) of the baseball's momentum? Part B: A

    asked by Mary
  36. physics

    An astronaut throws a wrench in interstellar space. How much force is required to keep the wrench moving continuously with constant velocity? Select one of the options below as your answer: A. a force equal to its weight on Earth B. a force equal to zero

    asked by lili
  37. chemistry

    describe the preparation of 100ml of 6.0M HCl from a concentrated solution that has a specific gravity of 1.18 and is 37% w/w HCl.

    asked by Eugene
  38. Algebra 2 help please :)

    What is a cubic polynomial function in standard form with zeros 1, –2, and 2? Use synthetic division to find P(3) for P(x) = x^4 – 6x^3 – 4x^2 – 6x – 2. Divide 3x^3 + 3x^2 + 2x – 2 by x + 3 using long division. Divide using synthetic division.

    asked by Robert
  39. physics

    A cylindrical fishing reel has a mass of 0.899 kg and a radius of 5.21 cm. A friction clutch in the reel exerts a restraining torque of 1.43 N · m if a fish pulls on the line. The fisherman gets a bite, and the reel begins to spin with an angular

    asked by Jared
  40. Physics

    A 4.0 kg wheel of 20 cm radius of gyration is rotating at 360 rpm. The retarding frictional torque is .12 N.m. Compute the time it will take the wheel to coast to a rest.

    asked by Trevor
  41. physics

    The largest grand piano in the world is really grand. Built in London, it has a mass of 1.25 × 103 kg. Suppose a pianist finishes playing this piano and pushes herself from the piano so that she rolls backwards with a speed of 1.4 m/s. Meanwhile, the

    asked by Anonymous
  42. chemistry

    how do i find the grams of potassium chloride per 100g of water in the saturated solution

    asked by sam
  43. math calculus

    What value must be defined for f(4) to remove the discontinuity of this function at x = 4? f(x)= x^2-16/x-4 0 4 -4 8 -8

    asked by jessica
  44. math

    two 6 sided dice are rolled . what is the probability the sum of the two numbers on the die will be 6

    asked by Anonymous
  45. math

    fiona invested $1000 at 6% compounded continuously. at the same time, maria invested $1100 at 6% compounded daily. how long will it take for their investments to be equal in value? step by step please!

    asked by Katharine
  46. maths

    kathleen spent 5/8 of her money and had 15e left how much had she at the start

    asked by nic
  47. precalculus

    Solve the given equation. (Enter your answers as a comma-separated list. Let k be any integer. Round terms to two decimal places where appropriate.) sin θ = root 2/2 and List six specific solutions.

    asked by Ama
  48. math

    fiona invested $1000 at 6% compounded continuously. at the same time, maria invested $1100 at 6% compounded daily. how long will it take for their investments to be equal in value? step by step please!

    asked by Katharine
  49. Physics

    A 17kg child slides down a 2.7m -high playground slide. She starts from rest, and her speed at the bottom is 1.8 m/s. What is the change in the thermal energy of the slide and the seat of her pants?

    asked by Joan
  50. Physics

    A figure shows a section of a long tube that narrows near its open end to a diameter of 1.0 mm. Water at 20 degrees celsius flows out of the open end at 0.020 L/s. What is the gauge pressure at point P, where the diameter is 4.0 mm?

    asked by Cristian
  51. physics

    After being struck by a bowling ball, a 1.4kg bowling pin sliding to the right at 4.5 m/s collides head-on with another 1.4 kg bowling pin initially at rest. Find the final velocity of the second pin in the following situations: a)The first pin moves to

    asked by mariah
  52. Algebra

    Sara has twice as much money as Miguel. If she had $6 more. She would have 4/3 as much money as he has. How much money does each have now?

    asked by Bob
  53. physics

    An object has a force of 10 newtons from the right and 17 newtons from the left. Once the object starts moving toward the right, an additional force of 7 newtons is applied from the right. What can you conclude about the direction of motion of the object

    asked by Kiandra
  54. chemistry

    a saturated solution of barium chloride at 30 degrees Celsius contains 150 g water. how much addition barium chloride ca be dissolved by heating this solution to 60 degrees celsius? bacl2 at 30 degrees= 38.2 bacl2 at 60 degrees= 46.6

    asked by sam
  55. Physics

    A 4.0 kg wheel of 20 cm radius of gyration is rotating at 360 rpm. The retarding frictional torque is .12 N.m. Compute the time it will take the wheel to coast to a rest.

    asked by Trevor
  56. science

    what happens to a liquid when it releases enough energy?

    asked by m
  57. chem

    Describe in detail by words how to prepare 200ml of .150M HCl from a 1.00 M HCl stock solution? Need help with this please? i used C1V1=C2V2 and got volume 2 = 33L or 0.33mL. to prepare the solution i need to weigh 1 gram of HCL (from 1.00M HCl stock

    asked by vince11
  58. CALCULUS

    what is the area in square units of the region under the curve of the function f(x)=x+3, on the interval from x=1 to x=3? 10 12 14 16 18 ?

    asked by bri
  59. Statistics

    The nicotine content in cigarettes of a certain brand is normally distributed with mean (in milligrams) μ and standard deviation σ = 0.1. The brand advertises that the mean nicotine content of their cigarettes is 1.5, but measurements on a random sample

    asked by Clay
  60. Physics

    A car is traveling at 10 m/s. By what factor does the car's kinetic energy increase if its speed is doubled to 20 m/s?

    asked by Joan
  61. abnormal psych

    # 1.44 (1 pts.) Dr. Green is an admitting psychologist at a psychiatric hospital. Unfortunately, every client she interviews receives the diagnosis of schizophrenia. Dr. Green's diagnostic system ignores A) reliability. B) variance. C) base rates. D)

    asked by Bryan
  62. physics

    An object has a force of 10 newtons from the right and 17 newtons from the left. Once the object starts moving toward the right, an additional force of 7 newtons is applied from the right. What can you conclude about the direction of motion of the object

    asked by lili
  63. math

    aubrey can walk 4 1/2 miles in 1 1/2 hours. find her average aspeed in miles per hour.

    asked by tayahni
  64. Physics

    The velocity of the baseball as it leaves the bat is 38.2 m/s. Determine (a) the maximum height the baseball reaches, and (b) the total timke the baseball is in the air. Assume the baseball is caught at the same height above the ground as it was hit.

    asked by Anonymous
  65. probability

    two fair six-sided dice are rolled and the sum of the dots on the top faces is recorded. a) complete the table, showing the number of ways each sum can occur sum: 1 2 3 4 5 6 7 8 9 10 11 12 ways:1 2 3 b)use the table to find the probability of the

    asked by mary
  66. physics

    A uniform disk of radius 0.48 m is mounted on a frictionless, horizontal axis. A light cord wrapped around the disk supports a 1.4 kg object, as shown. When released from rest the object falls with a downward acceleration of 3.6 m/s^2. What is the moment

    asked by Jared
  67. Physics

    A man cycles up a hill whose slope is 1in20. If themass of the man and the cycle is 150kg and the man covers a distance of 100m along the incline, calculate the work done by theman.

    asked by Aditya
  68. physics

    A 346 kg merry-go-round in the shape of a horizontal disk with a radius of 1.7 m is set in motion by wrapping a rope about the rim of the disk and pulling on the rope. How large a torque would have to be exerted to bring the merry-go-round from rest to an

    asked by Alyssa
  69. physics

    A solid sphere of radius 23 cm is positioned at the top of an incline that makes 23 degree angle with the horizontal. This initial position of the sphere is a vertical distance 3 m above its position when at the bottom of the incline. The sphere is

    asked by Alyssa
  70. psych

    1.11 (1 pts.) While Pete was out playing touch football with his friends, he tripped, fell, and bumped his head on the ground. Immediately afterward, he was very disoriented and kept asking his friends what time it was. Pete may have experienced A)

    asked by Jenny
  71. Physics

    A man lies on a plank of negligible mass supported by two scales 2.50 m apart. His head rests on the left scale which is also the axis of rotation. If the left scale reads 290 N and the right scale reads 122 N calculate his mass.

    asked by Rick
  72. physics

    What is the speed of sound in a medium where a 100-kHz frequency produces a 5.96-cm wavelength?

    asked by Jason
  73. Multi-Step Equations

    There are not any choices to these so I need help 1. x/4 + 1 = -5 2. 6x + 29 = 5 3. Combine like terms -21a + 16a

    asked by Anonymous
  74. Finance

    5.3 The manager of a large computer network has developed the following probability distribution of the number of interruptions per day: Interruptions (X) P1X2 0 0.32 1 0.35 2 0.18 3 0.08 4 0.04 5 0.02 6 0.01 a. Compute the expected number of interruptions

    asked by Elaine
  75. chemistry

    The organic compound di-n-butyl phthalate, C16H22O4(l), is sometimes used as a low-density (1.046 g·mL–1) manometer fluid. Compute the pressure (in torr) of a gas that supports a 585-mm column of di-n-butyl phthalate. The density of mercury is 13.53

    asked by anonymous
  76. chemistry

    Balance the following equations. Show all work. MnO4- + Zn -> Mn2+ + Zn2+

    asked by MARY
  77. Consumer Math

    The simple interest earned on a deposit of $3,000 at 6% for 5 years.

    asked by Hanuel
  78. Math

    If X = 12 units, Y = 10 units, and Z = 14 units, then what is the surface area of the right triangular pyramid shown above?

    asked by Kate
  79. chemistry

    {\rm NH}_{4}{\rm Cl} Express your answers as integers. Enter your answers numerically separated by commas.

    asked by Anonymous
  80. Physics

    three rotating, uniform disks that are coupled by belts. One belt runs around the rims of disks A and C. Another belt runs around a central hub on disk A and the rim of disk B. The belts move smoothly without slippage on the rims and hub. Disk A has radius

    asked by emma
  81. Math

    Subtract 5 from 8. Then multiply by c. Which of the. Following expressions matches the statement above? A.(8-5) x c B.(5-8) x c

    asked by Kai
  82. algebra

    A store manager bought c calculators for $8. All but four were sold for $10 each. The remaining four calculators were not sold. Find the store's profit, in simplified form, in term of c.

    asked by Bob
  83. pre calculus

    A bag contains 4 blue marbles, 2 black marbles, and 3 red marbles. If a marble is randomly drawn from the bag, what is probability that it is not black? 1/2 2/9 5/9 7/9 14/19

    asked by king chris
  84. Nutrition

    What is the portion size of a #8 scoop?

    asked by Joshua
  85. physics

    What is the sound intensity level in decibels of ultrasound of intensity 10^5 W/m2, used to pulverize tissue during surgery

    asked by Jason
  86. Physics

    How do you determine the displacement of a graph with lots of areas of displacement, do you add them all together?

    asked by Anonymous
  87. calculus

    A multistoried building has a floor area of 2,000 square feet on the ground floor, 1,995 square feet on the 1st floor, 1,990 square feet on the 2nd floor, and so on. If the areas of the higher floors follow this sequence, what is the expression to

    asked by Chelsy
  88. Chemistry

    Objectives To determine the molecular weight of a volatile liquid. Discussion [This laboratory exercise was adapted from one in Beran and Brady's Laboratory Manual for General Chemistry , John Wiley & Sons, 1982] The Dumas Method for determining the

    asked by Veronica
  89. CHEMISTRY

    The half-cell, Tl | Tl+(1 mol L-1), is connected to a Pt | H+ | H2(1 atm) half-cell in which the concentration of H+ is unknown. The measured cell voltage is 0.0841 V and the Pt | H2 | H+ half-cell is the cathode. Standard reduction potentials are given on

    asked by sabrina
  90. Algebra

    Joyce combines 9 atoms of hydrogen and 3 atoms of nitrogen to make 3 molecules of ammonia. write a direct variation equation which relates atoms of hydrogen to atoms of nitrogen. How many nitrogen atoms does Joyce need to form ammonia molecules using 51

    asked by Andrea
  91. math

    The cost "C" of operating a concrete-cutting machine is related to the number of minutes "n" the machine is run by the function: C(n)=2.2n⋀2-66n+655. For what number of minutes is the cost of running the machine a minimum? What is the minimum cost?

    asked by Anonymous
  92. Algebra 1

    The gardeners at Middleton Place Gardens want to plant a total of 45 white and pink hydrangeas in one flower bed. In another flower bed, they want 120 hydrangeas. In this bed, they want 2 times the number of white hydrangeas and 3 times the number of pink

    asked by Anonymous
  93. College Physics

    A satellite in an elliptical orbit has a speed of 9.00km/s when it is at its closes approach to the Earth(perigee). The satellite is 7.00x10^6 m from the center of the Earth at this time. When the satellite is at its greatest distance from the center of

    asked by Lelia
  94. science

    The force that every mass exerts on every other mass is called _________. A. gravity B. pull C. matter D. weight

    asked by dee
  95. stats

    what is the distinction between repeated measurements and matched items?

    asked by jason
  96. language arts

    is chapter 5 in johnny tremain a major event.

    asked by aliyah
  97. 5 th grade math

    what is the volume of a rectangular prism with a length of 4 inches, a width of 4 inches and a height of 2 inches?

    asked by Anonymous
  98. psych

    21(1 pts.) Based on the incidence of Fetal Alcohol Syndrome in various ethnic groups, which of the following individuals would be considered high risk? A) a woman of French Canadian descent B) a woman of Irish descent C) a woman of Italian descent D) a

    asked by Bryan
  99. chem101

    Endothermic reaction equilibrium: BiCl3(aq) + H2O(g) = BiOCl(s) +2HCL(aq) + 2 HCl at a point at which the sollution is colorless and a small minute amoount of BiOCl(s) is observed. for the folowing questions 1to 5: a. state which way the reaction shift in

    asked by audrey12
  100. chemistry

    Your x-ray lab has a monochromator consisting of a single crystal of nickel cut so that the (001) plane lies in the cube face. At what angle (in degrees) should the cube face be tilted with respect to the incident beam in order to select radiation with a

    asked by svetika
  101. physics

    The largest grand piano in the world is really grand. Built in London, it has a mass of 1.25 × 103 kg. Suppose a pianist finishes playing this piano and pushes herself from the piano so that she rolls backwards with a speed of 1.4 m/s. Meanwhile, the

    asked by Anonymous
  102. Math

    A spinner is divided into 8 equal sections, Each section is either blue or yellow. THe spinner was spun 40 times. It landed on a yellow section 10 times. Which proportion can be used to find the number of sections Y, that could be expected to be yellow? A.

    asked by Jerald
  103. chemistry

    intermolecular forces in caffeine

    asked by Anonymous
  104. science

    If you toss a coin five times and it lands heads up each time, can you expect the coin to land heads up on the sixth toss? Explain. Please help! Thanks!

    asked by sam
  105. Physics

    An object is placed 11 cm in front of a convex mirror of focal length 4 cm. Using the lens equation, find where the image will form and state whether it is a real or virtual image.

    asked by Melanie
  106. Algebra

    please help! Noah knows that his friend Ryan uses 2 small chlorine tablets each week to maintain his 10,000 gallon pool: 1)Write a direct variation equation that relates c and g, where c is the number of chlorine talets and g is pool volume in gallons.

    asked by Andrea
  107. Fundamentals of Early Childhood Education

    Describe nine elements of daily structure recommended for early childhood program.

    asked by Stevie
  108. finance

    The Ault Company made a credit sale of $15,000. The invoice was sent today with the terms, 3/15 net 60. This customer normally pays at the net date. If your opportunity cost of funds is 9% the expected payment is worth how much today?

    asked by james
  109. science/math

    write and solve an algebraic equation to find the original mass of the sample of the radioactive isotope uranium -235, which has a half-life of 704 million years your sample is about 700 million years old and weighs 120 grams

    asked by Justin
  110. PRE CALC

    Which combination of limit properties is required to evaluate this limit? lim (24/x-2x+2)^3 x->4 f. sum, difference, product, root g. sum, difference, product, power h. sum, difference, quotient, power i. sum, difference, quotient, root j. A limit does not

    asked by DARRON
  111. PHYSICS - PLEASE HELP

    A 66 kg human sprinter can accelerate from rest to 11 m/s in 3.4s. During the same interval, a 35 kg greyhound can accelerate from rest to 20 m/s. Compute (a) the change in kinetic energy of the sprinter. (b) the change in kinetic energy of the greyhound.

    asked by Anonymous
  112. music

    how can i write music and what is the write letters

    asked by kaitlin:)
  113. Light Energy Problems

    The binding energy of electrons in a metal is 194 kJ/mol. Find the threshold frequency of the metal. ----------------- The heat of fusion of ice is 6.00 kJ/mol. Find the number of photons of wavelength = 6.78×10^−6 m that must be absorbed to melt 6.80 g

    asked by Amy
  114. physics

    An object has a force of 10 newtons from the right and 17 newtons from the left. Once the object starts moving toward the right, an additional force of 7 newtons is applied from the right. What can you conclude about the direction of motion of the object

    asked by lili
  115. Math

    If the ratio of girls to boys on the track team is 5 to 6 which of these shows possible numbers of girls to boys on the track team? A.24 girls 20 boys B.50girls 56 boys C.60 girls 50 boys D. 20 girls 24 boys D?

    asked by Jerald
  116. algebra

    A submarine is 700 meters below the surface of the ocean. it is ascending at a rate of 35 meters every minute. What does x represent and What y represent

    asked by jenny
  117. Physics

    A basketball of mass 0.70 kg is dropped from rest from a height of 1.22 m. It rebounds to a height of 0.64 m. How much mechanical energy was lost during the collision with the floor? A basketball player dribbles the ball from a height of 1.22 m by exerting

    asked by Physics
  118. CALCULUS

    The masses of 10 books are found to be in an arithmetic sequence. If their total mass is 13 kg and the lightest book has a mass of 400 grams, what is the mass of the heaviest book? 2,000 grams 2,100 grams 2,200 grams 2,300 grams 2,700 grams

    asked by Chelsy
  119. MATHS

    A committee of two persons is selected from two men and two women. Find the probability that the committee will have at least one man.

    asked by CASEY
  120. math

    Jerry invested $14,000 in a certificate of deposit at 5%. He also put $2,500 in a savings account at 3%. How much interest will he earn after one year?

    asked by Anonymous
  121. Ph CHEM

    A solution is found to contain 1 x 10-4 OH− ions, determine the pH of this solution. I did this problem and got 4 but it is not going in as correct. -log(1*10^-4)=4

    asked by Lara
  122. Probability-plse

    A committee of two persons is selected from two men and two women. Find the probability that the committee will have at least one man.

    asked by mandeep
  123. physics

    What sound intensity level in dB is produced by earphones that create an intensity of 4.00¡¿10^-2 W/m^2?

    asked by Jason
  124. Math

    Jeremy drinks 2 pints of milk every 3 days How much milk would Jeremey drink in 60 days? A.20qt B.25qt C.30qt D.40qt D? The chart below shows the survey results for 50 students and their candy preferences There are 250 students at the Valentines Dance.

    asked by Jerald
  125. physics

    A cylindrical 7.25 kg pulley with a radius of 0.864 m is used to lower a 7.13 kg bucket into a well. The bucket starts from rest and falls for 4.51 s. What is the linear acceleration of the falling bucket? The acceleration of gravity is 9.81 m/s^2.

    asked by Alyssa
  126. precalc

    For the equation 2x 3 - 11x 2 + 12x + 9 = 0, the root 3 has a multiplicity of _____.

    asked by brenn
  127. physics

    An object has a force of 10 newtons from the right and 17 newtons from the left. Once the object starts moving toward the right, an additional force of 7 newtons is applied from the right. What can you conclude about the direction of motion of the object

    asked by lili
  128. College Physics

    A satellite in an elliptical orbit has a speed of 9.00km/s when it is at its closes approach to the Earth(perigee). The satellite is 7.00x10^6 m from the center of the Earth at this time. When the satellite is at its greatest distance from the center of

    asked by Lelia
  129. Physics

    A rocket of total mass 3100 is traveling in outer space with a velocity of 120 . To alter its course by 40.0, its rockets can be fired briefly in a direction perpendicular to its original motion.

    asked by Roland
  130. calc

    Convert theta= 225° to rectangular form.

    asked by meelizah
  131. Physics

    Ocean waves pass through two small openings in a breakwater. This time the openings are d = 21 m apart. You're in a small boat on a perpendicular line midway between the two openings, L = 80 m from the breakwater. You row x = 32 m parallel to the

    asked by Olivia
  132. math

    a system has a total mechanical energy of 350 J and kinetic energy of 220 J. what is its potential energy?

    asked by takwazi whtison
  133. physics

    An object has a force of 10 newtons from the right and 17 newtons from the left. Once the object starts moving toward the right, an additional force of 7 newtons is applied from the right. What can you conclude about the direction of motion of the object

    asked by Kiandra
  134. calculus

    A camera store sells 40 pairs of binoculars per week on average with a standard deviation of 6. What is the probability that the store will sell more than 52 pairs binoculars in any week? 8.28 3.57 7.24 2.28 4.55

    asked by tremain
  135. Physics

    Suppose there is a small hole (radius=0.0203) at the base of a large tank. If the height of water in the tank is 15m (a) what is the speed of water escaping through the hole? (b) Calculate the amount of water (in cubic meters per second) escaping the tank.

    asked by Jamie
  136. Chemistry

    find the dry volume at STP of 500 mL of nitrogen gas measured over water at 15 degree C and 680 mmHg. the water vapor exerts a partial pressure of 12.8 torr at this temperature ( vapor pressure).

    asked by delo
  137. math

    the temperature on a cold december morning fell from 37 degrees to -4 degrees. how many degrees did the temperature fall? Please explain answer

    asked by Anonymous
  138. math

    Maria ran 3 and 4/5 miles. She ran 1 and 2/3 miles further than Paul. Write the equation.

    asked by Lindsay
  139. Math

    Javon's class have 24 students.If 1/8 of them play the piano,how many of the student in his class play the piano?

    asked by Anonymous
  140. CALC

    A biased coin whose chance of heads is 0.4 is tossed five times in a row. What is the probability that heads is tossed exactly 2 times? 20.2% 23.04% 36.8% 40.1% 45.6%

    asked by Leandra
  141. Geometry:(

    The surface of a rectangular prism is the sum of: the product of twice the length L and the width w the product of twice the length and the height h and the product of twice the width and the height. **** Write an expression that represents the surface

    asked by Cassie:)
  142. algebra

    Light intensity(lumens) at a depth of x feet has the equation log I/12=-0.0125x what depth will the light intensity be half that of the surface

    asked by Steve
  143. English

    Baking is a major project for the holidays. Is the verbal baking? Is this a gerund or a participle and why? Baking in the oven, the bread smelled delicious. Is the verbal baking in the oven? Is this a gerund or a participle and why?

    asked by Emily
  144. Math

    You decide to make a scale drawing of your bedroom. YOur bedroom measures 12 ft. wide by 20 ft. long. If you are using an 8.5" x 11" paper, whate scale will you use. Explain.

    asked by May
  145. math

    Find the effective rate corresponding to the given nominal rate. (Round your answer to the nearest hundredth of a percentage point.) (a) 7%/year, compounded daily % (b) 6%/year, compounded monthly %

    asked by Ashton
  146. College Physics

    Suppose a planet is discovered that has the same total mass as the Earth, but half its radius. Calculate the acceleration due to gravity on the surface of this planet.

    asked by Katie
  147. Physics

    Two banked curves on a highway have the same radius. Curve A is banked at 13 degrees and highway B is banked at 19 degrees. A car can travel around curve A without relying on friction at a speed of 18 m/s. At what speed can this car travel around curve B

    asked by Scott
  148. physic

    A force of 20 newtons is exerted on a chair from its right and a force of 12 newtons is applied from its left. What is the net force acting on the chair and in what direction will the chair tend to move?

    asked by kiandra
  149. physics

    A scuba diver must decompress after a deep dive to allow excess nitrogen to exit safely from his bloodstream. The length of time required for decompression depends on the total change in pressure that the diver experienced. Find this total change in

    asked by phillip
  150. physics

    The largest grand piano in the world is really grand. Built in London, it has a mass of 1.25 × 103 kg. Suppose a pianist finishes playing this piano and pushes herself from the piano so that she rolls backwards with a speed of 1.4 m/s. Meanwhile, the

    asked by Anonymous
  151. calculus

    What is the value of this expression when n approaches infinity? 4 −(4/n)+(5/n)+(15/3n^2) *its all one equation*

    asked by taz
  152. math

    A bowl of fruit contains 4 apples, 5 oranges, and 3 bananas. In how many ways can 3 oranges be selected?

    asked by Anonymous
  153. Chemistry

    What is the general trend in the acidity of Period 3 oxides moving across the Periodic table from left to right? (Be sure to refer to the term acidity.)

    asked by Janet
  154. precalculus

    Solve the given equation. (Enter your answers as a comma-separated list. Let k be any integer. Round terms to two decimal places where appropriate.) tan θ = - root of 3/3

    asked by Ama
  155. Physics

    A satellite in an elliptical orbit has a speed of 9.00km/s when it is at its closes approach to the Earth(perigee). The satellite is 7.00x10^6 m from the center of the Earth at this time. When the satellite is at its greatest distance from the center of

    asked by Lelia
  156. Physics

    A vibrator in a ripple tank vibrates with a frequency of 3.0 Hz and an amplitude of 2.5 cm. The resulting waves travel away from the source with a speed of 2.5 cm/s, passing under various markers floating on the water. (a)In what direction(s) do the marker

    asked by Raju
  157. english

    Is upset an action verb? Is were an conditional verb?

    asked by Sam
  158. math

    Find the accumulated amount A, if the principal P is invested at an interest rate of r per year for t years. P = $24,000, r = 7%, t = 6, compounded monthly $ ?

    asked by Amanda
  159. CHEM HELP

    I asked this already but for some reason the answer I got isnt being accepted online Question: In the laboratory, 3.50 grams of salicylic acid were reacted with 7.20 ml of acetic anhydride (density equal to 1.08 g/ml). Determine the limiting reagent. I

    asked by Yaw
  160. Physics

    A person jumps from a tower 5 m high. When he strikes the ground below, he bends his knees so that his torso decelerates over an approximate distance of 0.70m. If the mass of his torso (excluding legs) is 50kg, find the force exerted on his torso by his

    asked by Marusa
  161. psych

    1.21 (1 pts.) William is acutely retarded and requires intense care. His IQ has been measured at approximately 15. What term would be used to classify William's level of retardation? A) mild B) moderate C) severe D) profound # 1.22 (1 pts.) Shannon has

    asked by Jenny
  162. chemistry

    What is Boyle's Law constant if a sealed rigid container with a volume of 650 mL has a pressure of 131.1 kPa ?

    asked by zale
  163. Grammar

    A compound modifier acts as a _____ unit modifying a noun. A) compound B) coordinate C) plural D) single I answered D

    asked by Marie
  164. math

    Find three consecutive integers such that the square of the third minus the first is equal to 2 more than 5 times the second.

    asked by abraham
  165. physics

    A car moving with a speed of 85 km/h is brought to rest in a didtance of 60 m. How much time did the car take to stop?

    asked by Anonymous
  166. Chem 2

    Describe how to make 175mL of a .10M tin(II) chloride solution??

    asked by Destry
  167. calculus

    Find the point (x,y) on the curve y=sqrt(x+4) closest to the origin.

    asked by cookie
  168. algebra

    8x^2-18x-5

    asked by Anonymous
  169. Chemistry

    A 35.0 g block of copper at 350.0 degrees celcius is added to a beaker containing 525 g of water at 35.0 degrees celcius. What is the final temperature of water?

    asked by Maryam
  170. statistics

    3. A researcher is interested in comparing the Christian maturity level of students who volunteer for community service versus those who do not. The researcher assumes that those who perform community service will have higher Christian maturity scores. The

    asked by jennfier
  171. science

    Mendel realized that the principles of probability could be used to _______ the results of genetic crosses. What's the blank? please help! thanks a bunch!

    asked by kelly
  172. Physics

    An object (m=2.85 kg) is attached to a disk-shaped pulley. The diameter of the pulley is 0.242 and its weight is 7.272 N. Suppose the object is allowed to fall (a) What is its linear acceleration? (b) What is the angular acceleration of the pulley? (c) How

    asked by Hank
  173. physics

    A technician wishes to produce the lens +2.00DS/+2.00DC x90 in toric form, in CR39 with a -5.00 base curve. After finishing the toroidal surface with the CR39 tool it is discovered that, in error, they have used a plastics material of refractive index

    asked by need help!
  174. Math: Algebra 1

    2. What is the solution of the system? 7x + 5y = 19 –7x – 2y = –16 A.) (2, 1) B.) (1, 2) C.) (7, 5) D.) (–7, –2) I think it is A.

    asked by Timothy
  175. Physics

    A 90N dog climbs up a non-uniform (lambda = Cx^(3/2)), 100N ladder. The top of the ladder rests on the top of a frictionless fence that is 3m high and forms a 30 degree angle with the ground, which is rough and has a coefficient of friction of 0.60. How

    asked by Min
  176. Geometry

    Given: and mEGFÚ=60 mAGFÚ=‹90; Prove: mAGBÚ=‹30.

    asked by Megan DiOrio
  177. trigonometry

    Find the magnitude of the resultant force and the angle between the resultant and each force: Forces of 2 lbs and 12 lbs at an angle of 60 degrees to each other.

    asked by mikey
  178. math

    a farmer had 24 animals. some of the animals were chicken and some were dogs. altogether there were 56 legs. How many of the farmer's animals were chickens and how many were dogs?

    asked by cindy
  179. Exceptional Child

    James wants a new toy. He says, "James toy". He is using: A. short sentences B. telegraphic speech. C. baby talk. D. holophrastic speech.

    asked by Sally
  180. chemistry

    An x-ray generator operated at a plate voltage of 7000 V is incapable of producing Ni Kα radiation. Calculate the minimum energy required for a ballistic electron to produce Ni Kα radiation. Express your answer in units of eV.

    asked by svetika
  181. calculus

    A machine on an assembly line fills cans with quantities of food that are normally distributed with a standard deviation of 0.057 pounds. The mean quantity filled is estimated using a sample of 100 cans. What is the difference between the upper and lower

    asked by taz
  182. 7th grade math

    1. Price of the dolls: $12.99 A. Price of the dolls with a 5% sales tax. Show all of your work! [4 points] B. A discount of 20% is applied to the doll’s original price of $12.99. What is the price of the dolls with the discount applied to $12.99 + 5%

    asked by Delilah
  183. English

    Read each sentence. Put the word in () that should be followed by a comma. Then add the comma After school today we'll go to the mall today in () and a comma after it Oh what a mess I've made! Oh in () and a comma after it Jordan can you help me with the

    asked by Jerald
  184. Calculus

    Find an antiderivative of q(t)=(t+8)^5

    asked by James
  185. CHEMISTRY

    Ethylamine, CH3CH2NH2, is an organic base with pKb = 3.367 at 298 K. In an experiment, a 40.0 mL sample of 0.105 mol L-1 CH3CH2NH2 (aq) is titrated with 0.150 mol L-1 HI(aq) solution at 298 K. (a) Write a balanced chemical equation for the neutralization

    asked by sabrina
  186. calculus

    Which expression completes the identity sin ucosv = ?

    asked by amy
  187. physics

    Air consists of molecules of several types, with an average molar mass of 28.95 g. An adult who inhales 0.6 L of air at sea level takes in about how many molecules? (The density of air is 1.229 kg/m^3, and the molar mass of air is 28.95 g/mol.)

    asked by john
  188. math

    What's the inequality ? the crowd that heard the President speak was estimated to be 10000 people.The actual crowd could be 750 people more or less than this. what are the possible values for the actual crowd size?

    asked by Sara
  189. precalculus

    Find all solutions of the given equation. (Enter your answers as a comma-separated list. Let k be any integer. Round terms to two decimal places where appropriate.) tan^2 θ − 3 = 0

    asked by Ama
  190. math

    Yuki's age is four years more than one-fourth of Xena's age. Xena's age is 21 years and 6 months more than seven-eighths of Yuki's age. How old are Xena and Yuki?

    asked by emmy
  191. math((PLEASE HELP!))

    If two numbers are written in scientific notation. how can you tell which number is greater? Where on a number line does the value of a positive number in scientific notation with a negative exponent lie?

    asked by Maryam :)
  192. calculus

    Which expression is equivalent to (sin x + 1)(sin x − 1)?

    asked by meelizah
  193. Grammar

    When transcribing ratios numerically, you use a _____ to replace the word “to.” A) colon B) comma C) period D) semicolon I answered D

    asked by Marie
  194. geometry

    Write a flowchart proof. Given:

    asked by sherianna johnson
  195. chemistry

    calculate number of dichlorine molecules in a 5.00ml container at 40 degrees Celsius and a pressure of 2.14 x 10^4 Pa.

    asked by matt
  196. physics

    A technician wishes to produce the lens +2.00DS/+2.00DC x90 in toric form, in CR39 with a -5.00 base curve. After finishing the toroidal surface with the CR39 tool it is discovered that, in error, they have used a plastics material of refractive index

    asked by need help!
  197. English.

    I have researched Valentines day and its origins and how it was celebrated today and in ancient times. I am having a hard time starting my introduction. Can you help?

    asked by Vicky
  198. physics

    A technician wishes to produce the lens +2.00DS/+2.00DC x90 in toric form, in CR39 with a -5.00 base curve. After finishing the toroidal surface with the CR39 tool it is discovered that, in error, they have used a plastics material of refractive index

    asked by Can anyone help?
  199. physics

    A technician wishes to produce the lens +2.00DS/+2.00DC x90 in toric form, in CR39 with a -5.00 base curve. After finishing the toroidal surface with the CR39 tool it is discovered that, in error, they have used a plastics material of refractive index

    asked by Can anyone help?
  200. college algebra, Please help!!

    change the exponential expression to an equivalent expression involving a logarithm. 1.9=a^6 a=1.1129 is this the correct logarithmic expression???

    asked by Heather
  201. soc 305

    In American society, those least likely to be living in poverty are ____________.

    asked by greg
  202. Chemistry

    How much heat is required to raise the temperature of a 125g block of iron from 17.5 degrees celcius to 82.3 degrees celcius?

    asked by Maryam
  203. algebra 1

    name the property that justifies the following 15=15

    asked by ledarrius
  204. Chemistry

    How much heat is required to raise the temperature of a 35.0g block of aluminium from 125 degrees celcius to 322 degrees celcius?

    asked by Maryam
  205. art

    How do I set out a timeline from Prehistoric art to Modern art in a power point presentation?

    asked by Rhys
  206. Math :):):):):):):):):):):):):)

    Sarsh is currently at 83.7% in math. She has just finished a worksheet that is out of 30. She got 30/30 which is full marks. What percent is she at now in math?

    asked by Winnie
  207. Math

    If the ratio of children to parents is 3 to 2 which of these shows possible numbers of children to parents? A.60 children 90 parents B.169 children 112 parents C.112 children 169 parents D.170 children 115 parents B? There are 2 men teachers to every 5

    asked by Jerald
  208. 7th grade math help Ms. Sue please

    How do you find the sales tax of something? Here is one of my problems: The price of three dolls are $12.99. What is the price of the dolls with a 5% sales tax? Show all of your work! I cannot figure out how to put up an equation and solve this problem.

    asked by Delilah
  209. chemistry

    a. Find the amount of solute based on this information Volume = 500 ml Concentration of solution= 15% (w/w) Solute (molar mass) = H2SO4 is 98.0g/mol b. Find the molar mass Amount of solute= 117.0g Volume of solution= 2.00L concentration of a solution= 1.0M

    asked by vince11
  210. math help

    A male black widow spider is half the size of a female black widow spider. Together, they are 21 millimeters in lenght. How big is a female black widow? A male?

    asked by carito
  211. Microeconomics

    The Burning Belly Taco Stand is considering buying some new special ovens. Each oven will cost $1,000, and will last for 2 years before it wears out. The ovens will be used to make the Taco Stands famous "Burning Ring of Fire" tacos, and will generate a

    asked by Jessica
  212. physics

    A technician wishes to produce the lens +2.00DS/+2.00DC x90 in toric form, in CR39 (n=1.498)with a -5.00 base curve. After finishing the toroidal surface with the CR39 tool it is discovered that, in error, they have used a plastics material of refractive

    asked by Can anyone help?
  213. Physics

    A centrifuge rotor rotating at 11500 is shut off and is eventually brought uniformly to rest by a frictional torque of 1.52 . a.If the mass of the rotor is 6.07 and it can be approximated as a solid cylinder of radius 0.0750 , through how many revolutions

    asked by Melissa
  214. Chemistry

    A 25.0 g block of copper at 350.0 degrees celcius has 857J of heat added to it. What is the final temperature of the block of copper?

    asked by Maryam
  215. Geometry

    Write a two column proof proving figure ABCD is a rhombus. Given - diagonal BC.

    asked by Maryam
  216. Math

    Javon's class have 24 students.If 1/8 of them play the piano,how many of the student in his class play the piano?

    asked by Anonymous
  217. science

    The major advantage provided by worms to a lawn is

    asked by Elisha
  218. Physics

    A warehouse employee used a cable to pull a 125 kg crate across the floor. the angle between the cable and the floor was 25°. The magnitude of the pulling force was 185 N. The coefficient of kinetic friction between the crate and the floor was 0.27.

    asked by Kevin
  219. CALC

    Find the coefficients of this binomial using Pascal’s triangle: (a + b)^8.

    asked by Leandra
  220. stats

    The Ledd Pipe Company has received a large shipment of pipes, and a quality control inspector wishes to estimate the average diameter of these pipes. A random sample of 18 pipes produces an average diameter of 2.56 mm with a standard deviation of 0.05 mm.

    asked by johnny
  221. calculus

    An open box is to be constructed by cutting corners out of a 9in by 12in sheet of cardboard and folding up the sides. Find the dimensions which will maximize volume.

    asked by cookie
  222. elocution

    theme united we stand divided we fall

    asked by godwin
  223. math

    Estimate each quotient 535.6/35?

    asked by b
  224. calculus

    Which is the correct cofunction identity for tan?

    asked by Pilly
  225. Physics Energy and Work

    A 20.0 kg child on skis, initially at rest, slides 2.0 m down an incline at an angle of 20.0 degrees with the horizontal. If there is no friction between incline and skis, what is the kinetic energy of the child at the bottom of the incline?

    asked by Rose
  226. physics

    A technician wishes to produce the lens +2.00DS/+2.00DC x90 in toric form, in CR39(n=1.498)with a -5.00 base curve. After finishing the toroidal surface with the CR39 tool it is discovered that, in error, they have used a plastics material of refractive

    asked by Can anyone help?
  227. Calculus

    Find the equation of the curve passing through P (1,2) whose slope is the square root of the product of the coordinates of any point on the curve.

    asked by NF
  228. college course

    •unscramble letters for phrases - I / _ _ _ _ _ / _ _ _ _ / _ _ / / _ _ _ _ / a / _ _ _ _ _ / I / _ _ _ / but/ _ _ _ _/ _ _ _ _ _/ _ _ e_ _ / the / _ _ _ e_/. One sentence. this is what they have given me already and said I can use only these letters but

    asked by wendy
  229. math

    yancey collects plastic banks. He has three different banks: a pig,a cow and a horse. How many ways can Yancey arrange his banks on a shelf?

    asked by mary
  230. Chemistry

    Calculate the pH of 30.0 mL of 0.025 M NaOH

    asked by Jen
  231. Chemistry

    3C3H8 + 20H2CrO4-> 9CO2 + 10Cr2O3 + 32H2O Suppose you want to make 1.50 g of chromium (III) oxide, how many ml of 6.25M chromic acid will you need to use if the percent yield of the reaction is 68.6%?

    asked by Michelle
  232. Math

    Three out of every 45 tickets sold in a food bank raffle will win a prize. if Eli and his friends bought 15 tickets, which proportion can be used to predict w, the number of prizes they would expect to win? A.3/45=15/w B.3/w=15/45 C.3/45=w/15 D.w/15=45/3

    asked by Jerald
  233. Algebra

    a helicopter that is 200 meters above the ground descends at a rate of 2 meters per second. The altitude of the helicopter after t seconds is given by h(t)=2000-2t. 1)give the range of this function 2)give the domain of this function.

    asked by Andrea
  234. Grammar

    A compound modifier is hyphenated when it comes directly after the noun it modifies. A) True B) False I answered B

    asked by Marie
  235. 7th grade math help Ms. Sue quick please

    HELLPPP ME PLEASE I ONLY KNOW THE LAST QUESTION! I need to have more than three steps! Please help! B. A discount of 20% is applied to the doll’s original price of $12.99. What is the price of the dolls with the discount applied to $12.99 + 5% tax? Show

    asked by Delilah
  236. Physics: Wave Motion

    A vibrator in a ripple tank vibrates with a frequency of 3.0 Hz and an amplitude of 2.5 cm. The resulting waves travel away from the source with a speed of 2.5 cm/s, passing under various markers floating on the water. (a)In what direction(s) do the marker

    asked by Raj Phys27/11
  237. Statistic

    In chi square goodness of fit test, if the expected frequencies, and the observed frequencies were quite different, we could conclude that: A) null hypothesis is false, and we would reject B) chi square distribution is invalid, and use t distribution

    asked by Mary
  238. Maths

    Solve for x,leave your answer in surd form. 2/x+2 + 3/x+1=5

    asked by Shane
  239. quantitative analysis

    consider a manufacture whose total cost of producing x items is given by c(x) = 10000 + 5x+1/9x^2 a) what is the average cost function of A(x) = c(x)/x? b)how many items should the manufacturer produce in order to minimize average cost? c)what is the

    asked by tyler
  240. English

    Can you recommend so websites for an assignment I am doing on the ancient origins of Valentine's Day and how it was celebrated in ancient times and today?

    asked by Vicky
  241. math

    Find the present value of $26997.18 due in 3 yr at an interest rate of 10%/year compounded continuously. $?

    asked by Ashton
  242. Chemistry

    7750 J of energy is added to a 325g stone at 24.0 degrees celcius. The temperature increases by 75.0 degrees celcius. What is the specific heat of the stone?

    asked by Maryam
  243. chemistry

    a. Find the amount of solute based on this information Volume = 500 ml Concentration of solution= 15% (w/w) Solute (molar mass) = H2SO4 is 98.0g/mol b. Find the molar mass Amount of solute= 117.0g Volume of solution= 2.00L concentration of a solution= 1.0M

    asked by vince11
  244. Science

    Can you explain tectonic plates?

    asked by Olivia
  245. algebra

    Could someone please explain the steps in finding all the real zeroes y=(x-12)^3-7 I do not know how

    asked by lee
  246. algebra

    Could someone please explain the steps in finding all the zeroes of the equation x^4-6x^2-7x-6=0 Have no idea

    asked by lee
  247. Geometry

    Isosceles triangle base is 7 more than one-half times the legs. Perimeter is 22 centimeter Find length of each leg b

    asked by Gia.
  248. science

    What is the alleles of pea pot parents and the possible allele combinations of the offspring. Both parents are tall and 3 offsprings are tall while the other one is short. I don't get this! Please help! Thanks!!

    asked by kelsey
  249. Physics

    A toy is attached to the cieling by a string. As the toy flies around in a horizontal circle with a radius 45 cm, the string makes an angle of 60 degrees with the cieling. What is the speed of the toy?

    asked by Sarah
  250. structure and function of the human body

    What is the importance of ATP? explain where carbohydrate metabolism occurs in the cell, what additonal ingredient is needed and what waste product is produced in this process?

    asked by Liz
  251. history urgent please!

    The most dominant merchant and traders of the Indian Ocean Trade network were Chinese merchants Muslim and Arab merchants African merchants Australian and Oceania merchants European Merchants

    asked by Jim
  252. Statistics

    I am so lost on this statistics question would someone help me figure out how to answer it? A random variable X is normally distributed with the mean and standard deviation 1.6. What is the proportion of the data values that lies within 1.6 standard

    asked by Layney
  253. Math

    Divide18 by g. Then, subtract 7. C. 18/g-7 Is this right?

    asked by Kai
  254. Chemistry

    What is the molarity of potassium nitrate?

    asked by Shayla
  255. English 8R - help!!!!! (Project)

    Create a power point presentation that illustrates words that pertain to the rural environment. - Select a letter from the alphabet - Make a list of 10-15 words or terms that begin with that letter - Create power point that defines each word - Provide

    asked by Laruen
  256. Statistics

    A simple random sample of 50 female 14-year-olds is selected. The sample mean height of the girls is found to be 62 inches. Assume the height of 14-year-old girls is normally distributed with a standard deviation of 5 inches. 1. Based on these data, a 95%

    asked by Clay
  257. coding

    This 35 years old female patient has carcinoma of the upper-outer left breast. She had a lumpectomy performed and a sentinel lymph node biopsy of the axillary lymph node. The pathology report for the lymph node. Diagnosis code with POA: I do not how to

    asked by Anonymous
  258. Math

    Add d and 7 then divide by 3

    asked by Kai
  259. math

    lynda cut 3.2 meters of ribbon into equal size pieces. each piece was longer than 0.1 meter, but shorter than 2.o meters, with lengths in increments of 0.02 meters. How many pieces did lynda cut,and how long was each piece?

    asked by Mashiya
  260. Chemistry

    What volume of 0.25 mol L-1 sodium nitrate solution could be prepared using 6.00 moles of compond?

    asked by Jacob Paul
  261. Pre-calculus

    You are given a 12"x18" piece of construction paper. You are to cut a square out of each corner in order to create a 3-dimensional open-top box. What size squares would you need to cut in order to maximize the volume of the box?

    asked by John
  262. Chemistry

    How to predict the possible structures of a compound if the degree of unsaturation of it is in fraction?

    asked by Unaz
  263. Math (MS112)

    What rate of interest, to the nearest tenth of a percent, compounded quarterly is needed for an investment of $1700 to grow to $2600 in 12 years? I am given the formula A=P(1+r/n)^nt

    asked by Taylor
  264. English

    1. He is the oldest of the three. 2. he is the oldest of three. (Which one is right?) •English - Ms. Sue, Tuesday, November 27, 2012 at 5:15pm They are both correct. •English - kaitlin:), Tuesday, November 27, 2012 at 6:26pm number 1 is correct because

    asked by rfvv
  265. physics

    A tank of height H is filled with water and sits on the ground. Water squirts from a hole at a height y above the ground and has a range R. For two y values, 0 and H, R is zero. Determine the value of y for which the range will be a maximum. (Use any

    asked by joshua
  266. Physics

    Why is it that if deceleration is doubled, distance is halved?

    asked by Rachel
  267. college algebra, Please help!!

    find the f and g, so that fOg= H H(x)=sqrt x^2+17 please show work

    asked by Heather
  268. chemistry

    Into a 1.00 liter flask are placed 0.820 moles of NO and 0.223 moles of N2 and O2. What are the concentrations of NO, N2, and O2 at equilibrium? For the molarity for each, I got this: NO= .027 M N2= .0079 M O2= .0069 M balanced equation: 2NO(g) N2(g) + O2

    asked by Victoria
  269. Math

    What is radical 2/50 ?

    asked by Jazmine
  270. Steve I have a question

    I have 6 more questions do you mind helping me with them? Pretty Please! :(|)

    asked by Anonymous
  271. Grammar

    Select the correctly punctuated sentence: A) He will follow up in 2 weeks. B) He will followup in 2 weeks. C) He will follow-up in 2 weeks. Answer A

    asked by Marie
  272. physics

    A baseball is thrown such that it is in the air for 4 seconds and lands 100 m away. Find the initial vertical and horizontal components of the baseball's velocity.

    asked by mia
  273. calculus

    3 letters are chosen at random from the letters P, A, N, S, O, L. What is the size of the sample space of this experiment? 12 10 20 30 35

    asked by king chris
  274. calculus

    What is the exact value of sin(2 theta) if cos (theta)=3/5 and (theta) is in quadrent 4? 12/25 24/25 -12/25 -7/25 -24/25

    asked by Shasha
  275. English

    1. He is the oldest of the three. 2. he is the oldest of three. (Which one is right?)

    asked by rfvv
  276. chemisrty

    What is ΔGo at 1000 oC for the following reaction? CaCO3 (s) CaO (s) + CO2 (g)

    asked by laquisha
  277. Algebra II

    Write an equation for a parabola that opens upward from its vertex at (-4,3). What is the equation of its line of symmetry?

    asked by Sam
  278. poetry

    9. Rewrite the first stanza of “Scott’s Goodbye” as free verse. (5 points)

    asked by Jane
  279. maths

    Let A, B and C be the sets such that A ∪ B = A ∪ C and A ∩ B = A ∩ C. Show that B = C.

    asked by Lisa
  280. PreCalculus - Find Inverse

    Find the inverse of f(x) = x^3, algebraically .

    asked by Hollaaa
  281. english

    hi ive been reading a book called, the berlin boxing club, and one of my hw assignments say i need to find 10 quotes in the book and im having trouble finding them. can u please help me? :)

    asked by katie
  282. To Ms. Sue or any other teachers on Jiskha

    Can some one please help with with my science post because I'm struggling.

    asked by Laruen
  283. WOODVILLE ELEMETARY SCHOOL

    I NEED HELP AT MATH CAN YOU HELP ME PLEASE...

    asked by ALWALEED
  284. math

    The height h(in ft) above the ground of a submarine-launches missile is given by the function h=-16t+96t+80 where t represents the time in seconds. Scetch a graph of this function. Determine the time at which the missile leaves and returns to the water.

    asked by kristy
  285. math

    j has a bag of 23 pieces of fruit the bag has 10 banana chips. what is the probability that j will choose a banana chip when he reaches into the bag? how to solve this problem

    asked by genesis
  286. Math

    1)Radical 2 over 50 2) radical 10 to the power 3 all squared.

    asked by Edd
  287. math

    3500 in a savings account for 9 months at a interest of 4.5%. What is the total amount at the end of this time? Thanks.

    asked by Edna
  288. calculus

    Find the point (x,y) on the curve y=sqrt(x+4) closest to the origin.

    asked by cookie
  289. English

    Do anyone read the story "the road" or watch the movie? i have some questions.

    asked by Mohammad
  290. calculus

    a random sample of 80 students at a large school shows an average grade of 72 in algebra with a standard deviation of 4. find the t-score you would use for an 95 % confidence interval

    asked by emanuel hargrove
  291. Chemistry

    Suppose I put 1 billion bacteria in a 10 ml tube of saline, mix well, and label this tube A. Answer the following questions: 1. Take 1 ml from tube A and put it in an empty tube B. What is the concentration and number of bacteria in tube B?

    asked by Laura
  292. Math

    A recipe for cake calls for 5 and 1/4 cup of flour. The chef mistakenly adds 7 and 2/3 cups of flour to the mixture. How much flour does the chef need to remove from the mixture?

    asked by Lindsay
  293. Math

    Miss Mary bought 2 liters of coke, 3 times as much Pepsi and 5 liters of sprite. How many liters of soda did she purchase?

    asked by Nina
  294. Financial management

    what is the principle investment ? you have $1728.34 compounded daily at 3.4% and its invested for 9 years

    asked by Michelle
  295. math

    Only 40% of people between the ages of 18 and 24 read a daily newspaper. Write the percent as a fraction in simplest form.

    asked by ...........................
  296. college algebra

    solve the following exponential equation. 7^x=8 a. x= Write in exact solution b. then with that answer move the decimal 3 points over

    asked by confused
  297. math

    Find the present value of $26997.18 due in 3 yr at an interest rate of 10%/year compounded continuously. $?

    asked by Ashton
  298. math

    Find the present value of $26997.18 due in 3 yr at an interest rate of 10%/year compounded continuously. $ ?

    asked by Ashton
  299. Math (trigonometry)

    How do you solve this trig identity problem without factoring? I just used @ to represent theta: sin^4@ + 2sin^2@cos^2@ + cos^4@ = 1

    asked by Sammy
  300. pre calc

    If Sn represents the sum of the squares of the first n natural numbers, use proof by induction to find which of the following expressions for Sn is true? Sn=n(n-1)/(3) Sn=n(2n-1)/(3) Sn=n(n+1)/(3) Sn=n(n+1)(2n+1)/(3)

    asked by ziya
  301. Reading

    compare the following items from the past to the present.car stove telephone and washing machine

    asked by Shanell
  302. 7th grade art Ms. Sue please

    1. This term refers to a subject in artwork that has been simplified and rearranged. (1 point) nonobjective linear semi-abstract objective 2. This term refers to artwork that does not have a reference to a subject or object. (1 point) representational

    asked by Delilah
  303. college algebra

    use the properties of logarithms to find the exact value of the expression loglower 3^18 - log lower3^6 **how do I make the three lower in the log equation?

    asked by confused
  304. Physics

    A cylindrical carnival ride is spinning with a frequency of 0.5 Hz in a circle of radius 3 m which allows a 60 kg person to “stick” to the side of the ride as it spins. T = 2s v = 9.42 m/s A) Find the normal force exerted on the person. B) What

    asked by Sierra
  305. math VERY URGENT+IMPORTANT

    what is 6 minus 2 and one half? please explain answer

    asked by Anonymous
  306. Algebra

    Please help asap, (Question) he length width of a rectangle are in the ratio 3:2. The perimeter is seventy-three centimters.

    asked by TaSherra
  307. MATHS

    Find the area of the region bounded by the curve of sin x between x = 0 and x = 2π.

    asked by CASEY
  308. math

    Beth Pittman earns $12,558 per year. She is paid 52 times per year and claims 2 exemptions. If $8.85 in taxes is withheld from each paycheck, at what rate is she taxed?

    asked by Anonymous
  309. science

    what is the alelles for 3 tall plants and 1 short plant that are offsprings and have both tall parent plants?

    asked by jacobt
  310. pre calculus

    janet worked on a garden shaped like a triangle with a base that is 5 m less than twice the height. If the area of the garden is 90 m^2, how long is the base and the height?

    asked by abraham
  311. Grammar

    A compound modifier acts as a _____ unit modifying a noun. A) compound B) coordinate C) plural D) single I answered D

    asked by Marie
  312. Math

    There are 18 green blocks in a bag THere are 3 white blocks for every 2 green blocks Which proportion can be used to find w, the total number of white blocks in the bag? A.18/w=3/2 B.18/w=2/3 C.3/18=2/w D.2/3=w/18 How do I solve

    asked by Jerald
  313. physics

    An open-topped tank completely filled with water has a release valve near its bottom. The valve is h = 1.9 m below the water surface. Water is released from the valve to power a turbine, which generates electricity. The area of the top of the tank, A_T, is

    asked by Brandon
  314. Physics

    A cubical object of sides 5 cm is immersed completely in water. What is the force of buoyancy on the object? (Assume g = 10 m/s2)

    asked by Mark
  315. math

    how many terms are there on a 1/2 (a+b)? and are they monomial or binomial?

    asked by randy
  316. Chemistry

    Suppose I put 1 billion bacteria in a 10 ml tube of saline, mix well, and label this tube A. Answer the following questions: 1. Take 1 ml from tube A and put it in an empty tube B. What is the concentration and number of bacteria in tube B?

    asked by Laura
  317. English

    Reach each sentence if it is correct write c. if it has an error in commas, put the word in () that should be followed by a comma and add the comma The cafeteria is serving chicken soup vegetable stew, or chilli. chicken soup in () and a comma after soup

    asked by Jerald
  318. Grammar

    A compound modifier is hyphenated when it comes directly after the noun it modifies. A) True B) False I answered B

    asked by Marie
  319. English

    Read each sentence. Identify the comma error and put Add or Omit on the line to show how to correct the sentence. Then put the word in () before the error That shiny sleek car is new shiny add Courtney brought a delicious ham turkey, and beef sandwiches

    asked by Jerald
  320. English

    I want to put these words in a sentence that makes sense. Many will think that my voice doesn't matter for people my age. It doesn't sound right to me.

    asked by Emma
  321. Grammar

    “Follow up” is never a verb. A) True B) False I answered F

    asked by Marie
  322. math

    what is the equivalent of 1/5?

    asked by Ry
  323. Physics

    Two fraternities are in a tug of war. Theta Chi is pulling with a total force of 4,748 newtons to the east and Tau Kappa is pulling with a total force of 3,969 newtons to the west. What is the magnitude and direction of the resultant? Which team will win?

    asked by Amanda
  324. math

    Find equation of the line that passes through the points (2/3,-5/4) and (-3,-5/6). write your answer in slope-intercept form and standard form with integer coefficients.

    asked by emmy
  325. Math

    if the lateral surface area of a regular square pyramid is 200 inches square how do I find the volume?

    asked by JOdi
  326. algebra

    a five digit number that follows the pattern:if you put a 1 after it the number is three times as large as it would be if u had put a 1 before it

    asked by Anonymous
  327. Reading

    compare the following items from the past to the present.car stove telephone and washing machine

    asked by Anonymous
  328. calculus

    Which is the sixth term in the expanded form of this binomial? 14(x)^3 280(x)^2 280(x)^3/2 672x 448x

    asked by HELP!
  329. English

    Please help i need to put this sentences in order and combine them in order to make sense. 1. The pizza sits on the table. 2. It is fresh from the oven. 3. It is in the middle of the table. 4. Its crust rises up. 5. The crust is thick. 6. The crust is

    asked by Lily
  330. 7 grade math

    a helicopter blade spend 775 times in 3 mintues find the rate in revolutions per second

    asked by Kim
  331. calculus

    Simplify the expression: tan(-x)csc(x)

    asked by Shasha
  332. calculus

    If Sn = 1 + 6 + 11 + 16 + 21 + 26...... where an = (5n − 4), what would be the mathematical expression represented by Sk + ak + 1?

    asked by miley
  333. Grammar

    The colon is a frequently used mark of punctuation that is used in a large variety of cases. A) True B) False I answered A

    asked by Marie
  334. Psychology

    I need to do a presentation on gender development. We're supposed to have an activity that presents the topic or ties into the topic. I have searched the internet, but have not come up with anything for gender development specifically. Does anyone have any

    asked by Anonymous
  335. math

    Home work help plz a)what would be the cost of the activity in the first week b)what would be the cost of the activity each subsequent week Mrs ogden has heard about aqua aerobics from her sister in law. she wants to join her sister in law and her friends

    asked by jessica
  336. math

    pedro swam some laps in the pool and then swam 2 more.... algebraic expression

    asked by m
  337. Algebra

    The perimeter of rectangle is 62 m. If the width were doubled and lenght were increased by 9 m, the perimeter would be 104m. What are the lenth and width of a rectangle?

    asked by Anonymous
  338. chemistry

    how would you prepare 250 mL of a .1 M C12H22O11 starting with 2.5M C12H22O11

    asked by Julie
  339. ELA

    I need a few suggestions of store names. Its a grocery store in Manhattan. Thx

    asked by S
  340. college algebra

    write the expression as a single logarithm In(x/x-2)+In(x+2/x)-In(x^2-4) Please show work

    asked by Ladybug
  341. Geometry

    Isosceles triangle base is 7 more than one-half times the legs. Perimeter is 22 centimeter Find length of each leg

    asked by Gia.
  342. Science 8R - help

    How does the Law of conservation of energy compared to the conservation of matter? please help

    asked by Laruen
  343. Math

    What is 23 times 17 in arrays and algorithm

    asked by Kristian
  344. Sociology

    I need help identifying a country. In the 1980’s Country an introduced changes that were intended to change the country’s rural areas. Most subsidies for agriculture were eliminated, including subsidies for agricultural inputs such as seeds and

    asked by Charlene
  345. Social studies

    what was the formal name for our country?

    asked by Jason
  346. math

    Yuki's age is four years more than one-fourth of Xena's age. Xena's age is 21 years and 6 months more than seven-eighths of Yuki's age. How old are Xena and Yuki?

    asked by emmy
  347. chemistry

    How would student make 500mL of .08500 M solution of iron using stock solution of .3180 M in iron(III)?

    asked by zale
  348. math

    how many minutes are there in 6 hours and 45 minutes

    asked by Joe
  349. Algebra 1B Chapter 10

    I'm reclassified but I'm still a 10th grader and the only class I need to take is Algebra1B So here's the problem. I'm 1990, the town of Belgrade, Montana, had a popuof of 3422. For each of the next 8 years, the population increased by 4.9% per year. a.

    asked by Asheir
  350. chemistry

    Explain the effect of molecular polarity on behavoir

    asked by Ismail basira
  351. Genetics

    starting with 1000 copies of a template, 35 cycles of PCR were performed. What is the theoretical yield of copies of double stranded product of this amplification reaction?

    asked by Josh G.
  352. maths

    Let A, B and C be the sets such that A ∪ B = A ∪ C and A ∩ B = A ∩ C. Show that B = C.

    asked by mandeep
  353. Algebra 1

    What is 5x cubed over x squared multiplied by 3x to the fourth power over 6x?

    asked by Maddy
  354. English

    Write the word that should be followed with a comma We hiked across town, through the woods and into the cave. woods? Tiffany, Christina and Paige are down the hall in Room 101 Christina? Do you want to go to the park, to the beach or to the parade? beach?

    asked by Jerald
  355. Grammar

    If the word “very” or an adverb that ends in “ly” is part of your compound modifier, you do not use a hyphen in the compound modifier. A) True B) False I answered A:)

    asked by Marie
  356. calculus

    Which of the following is NOT a solution to cos^2 x = 3sin^2 x? 30 60 150 210 330

    asked by philly
  357. physics

    An arrow is shot at an angle such that it's horizontal velocity is 40 m/s and it's vertical velocity is 20 m/s. Find the horizontal distance the arrow will travel before hitting the ground.

    asked by mia
  358. CHM

    How to balance the following equation: Na(s) + H2O(l) yields?

    asked by Adam
  359. English

    Combine the sentences below into a brief paragraph,using clear and efficient language.Remember that each sentence contains some information that is essential to the meaning of the overall paragraph; do not omit any necessary details. When you have

    asked by Lily
  360. Maths

    Point P(-8,-3)and Q(6,9)are joined by a straight line.Find the equation of the line joining the midpoint of PQ to the origin.

    asked by Shane
  361. Chemistry

    A 335g block of copper cools from 95.0 degrees celcius to 27.2 degrees celcius when it is put in a beaker containing water at 22.4 degrees celcius. What is the mass of the water in the beaker?

    asked by Maryam
  362. MATH 5TH GRADE

    HOW MANY TIMES MORE IS 2000 THAN 20?

    asked by frank
  363. Chemistry

    What is the mass of a sample of material that has a volume of 51.1 cm3 and a density of 6.31 g/cm3?

    asked by Donna
  364. Geology

    Which of the three rock families occurs most in new York state?

    asked by Sierra
  365. math

    what is 6 minus 2 and one half? please explain answer

    asked by Anonymous
  366. Trigonometry

    How do you solve this trig identity? Using @ as theta: Sin@-1/sin@+1 = -cos@/(sin@+1)^2 I've tried it multiple times but I can't seem to arrive at the answer.

    asked by Sammy
  367. math

    Write the expression thrice the sum of m and 8

    asked by elena
  368. social studies

    Greenland and new guienea are two islands with the largest land areas in the world. To which hemipshers do they belong

    asked by Anonymous
  369. Math (5th grade )

    Kathy's mom has made a batch of lemon bars. Her treats are in a rectangular pan that measures 12" x 8". She will cut a vertical and horizontal live every 2 inches along the length and width of the pan. How many bars will each person receive

    asked by Tim
  370. Physics

    A point source is generating circular water waves. (a) What does the amplitude of the wave near the source depend on? (b) What happens to the amplitude of the wave as it spreads outward? (c) Why the amplitude of a wave changes as it spreads outwards?

    asked by Raju
  371. math

    For a normal curve, what percentage of values falls beyond two standard deviations from the mean? A. 5.55% B. 4.55% C. 10.55% D. 12.55% E. 13.11%

    asked by DARRON
  372. Chemistry

    Calculate the pH of 30.0 mL of 0.025 M NaOH

    asked by Jen
  373. math

    based on simple interest,find the amount saved or owed principle=$1700rate=6%time=5yrs

    asked by tariq
  374. math need help urgent

    find the domain f(x)=x/x-8,g(x)=-7/x solve the following exponential equation equation exact answers only 3e x-1 = 2+e^x-1

    asked by zach w
  375. chem

    what volume of 14.8M ammonia is required for preparation of 3.1g of [cu(nh3)4]so4.h2o

    asked by Anonymous
  376. Math

    A customer of Central States Bank places $3,500 in a savings plus account for 9 months. The interest is 4.5%. What total amount is in the account at the end of this time?

    asked by Edna
  377. geometry

    A rectangle has a perimeter of 114m and an area of 807m^2. What are the dimensions?

    asked by taylor
  378. math

    what is the mean of 33,36,39,45,29,58

    asked by mckenz
  379. Physics

    A vibrator in a ripple tank vibrates with a frequency of 3.0 Hz and an amplitude of 2.5 cm. The resulting waves travel away from the source with a speed of 2.5 cm/s, passing under various markers floating on the water. (a)In what direction(s) do the marker

    asked by Raju
  380. Math radicals

    Radical 8 over 18 ? Plz reply fast

    asked by Liily
  381. Radicals math

    Write. Without the radical symbol : 1.) radical 400 2) Radical 16 over 49. 3). Radical 2 over 50.

    asked by Liily
  382. maths

    if 59,51,76,3,6 were numbers as total and 84,88,35,62,18 were machine produce what will be the next 5 out come numbers.if we are selecting from 1 to 90.

    asked by eric
  383. Math

    If you get a confidence interval of (42,58) what is your margin of error?

    asked by Andrew
  384. Physics

    What is the frequency of a sound wave in air at 20°C that has a wavelength of 0.4 m?

    asked by Joshua
  385. English

    Please help me figure out what I got on my exams, am kind of worried!Please tell me if I am passing! Thank you! I got 113of 250 on my first exam. 113/250*100=.204304 is this right? Second exam: 120/250*100=.2304 is this right? Thank you!

    asked by Jessica102
  386. algebra

    what should be the equation of the line in standard form that passes through (4,6) and is parallel to the line where equation is y=2/3x +5?

    asked by kristine
  387. Maths

    Given the quadratic function y =3x^2+10x-8 (i)Find the y-intercept. (ii)Find the x-intercept. (iii) Calculate the axis of symmetry. (iv)Find the coordinates of the vertex (v)Sketch the graph of the above function.

    asked by Shane
  388. chemistry

    is water hard or soft if it contains 1.8 moles

    asked by Anonymous
  389. English

    Read each sentence COrrect any misplaced or missing commas. Rewrite the sentence. The old restored building is downtown. The old,restored building is downtown. THe moody grumpy boy is Chris. The moody,grumpy boy is Chris. Alyssa brought those, delicious

    asked by Jerald
  390. Phoenix

    Why do you think Windows is so prevalent? What do the other systems have to offer that Windows does not? Who uses the other systems?

    asked by Michelle
  391. English

    What would be an example of using one analogy and one idiom in a paragraph.

    asked by Paul
  392. MATH

    HOW MANY TIMES LESS IS 400 THAN 4 MILLION???

    asked by frank
  393. math

    hi, i don't understand the homework that says show how to make one adden a ten. example: 38+26= Thanks

    asked by Gigi
  394. Physics

    A vibrator in a ripple tank vibrates with a frequency of 3.0 Hz and an amplitude of 2.5 cm. The resulting waves travel away from the source with a speed of 2.5 cm/s, passing under various markers floating on the water. (a)In what direction(s) do the marker

    asked by Raj Phys27/11
  395. calculus

    What is the first natural number that causes the statement 1 + 3 + 5 +... + (2n − 1) 4n − 1 to fail? 2 3 4 5 6

    asked by miley
  396. English

    Is planned a condition or action verb? Is shower a condition or action verb? Is wears a condition or action verb?

    asked by Sam
  397. trig

    If tan y = -4/3 and y is in Q I'VE find cos 2y

    asked by Maddie
  398. pre calc

    What is the first natural number that causes the statement: (2 + 3)^n **less than equal to sign** 4^n + 3^n to fail? 1 2 3 4 5

    asked by ziya
  399. math

    what dimensions would make a box that has a volume of 27? show how you came up with it?

    asked by darius
  400. algebra

    f(x)=square root of 5-x and g(x)=x^2+2x a- find g(f(-1)) b-f(x)/g(x), state the domain, then evaluate for x=3

    asked by Steve
  401. spelling

    i cant understand v/cv and vc/v patter mean .can you giv me exemple

    asked by alba
  402. math

    Find equation of the line that passes through the points (2/3,-5/4) and (-3,-5/6). write your answer in slope-intercept form and standard form with integer coefficients.

    asked by emmy
  403. statistics

    Find the t dcore you would use for an 95% confidence interval. 80 students,72 average, 4 standard deviation.

    asked by diane
  404. maths

    if cosx=-1/2,x lies in third quadrant, find sinx.

    asked by manpreet
  405. math

    how do i make a story problm with a ratio table and awser it

    asked by kaitlin:)
  406. Math

    Write 91, 008.34 in word form.

    asked by Gio
  407. Math

    is radical -9*-4 = radical -9 * radical -4 ? Justify

    asked by Mia
  408. math

    a ship sail S 40 degrees W four 4 hours how do i figure out this question

    asked by Maddie
  409. English

    Read each sentence then write which word should be followed by a comma My dog has a collar, a leash and several toys. leash? Waldo dashes through the house out the door, and around the yard. house? Luis walks hiss doing in the morning, after school and

    asked by Jerald
  410. ENGLISH

    hi ive been reading a book called, the berlin boxing club, and one of my hw assignments say i need to find 10 quotes in the book and im having trouble finding them. can u please help me? :)

    asked by katie
  411. math

    Can 0/3 + 3 be simplified? Can 10m + 1 / 10 be simplified?

    asked by Lindsay
  412. Math

    name the property and explain 26×(2×8)=(26×2)×8

    asked by Gio
  413. CHEMISTRY

    Suppose that you have 0.500 L of each of the following solutions, and an unlimited supply of water. (Note: C9H7NHBr is a salt containing the ions C9H7NH+ and Br− and C9H7N is quinoline, an organic base with pKb = 6.24 at 298 K. If you like, you may

    asked by sabrina
  414. trig

    If tan y = -4/3 and y is in Q I'VE find cos 2y

    asked by Maddie
  415. English

    Read the sentence. Rewrite each sentence adding the comma needed after the introductory word, phrase, or clause. Besides I don't like your idea for the project. Besides, I don't like your idea for the project. Throughout the class I kept sneezing

    asked by Anonymous
  416. Geology

    What observable characteristic is present with banding of metamorphic rocks that is not present in the layering of clastic sedimentary rocks?

    asked by Sierra
  417. world history

    Which of the following was not an innovation that came about due to militarization in the 1800s?

    asked by laura
  418. math

    how do you divide 1.0 divided by 0.02

    asked by angela
  419. math

    How do I convert 5sq.yd. to sq.ft.

    asked by Math Geek
  420. science

    3. Describe each stage of the flow of information starting with DNA and ending with a trait

    asked by April
  421. math

    find the 6 trigonometric functions of tan (-3/8): sin < Ø

    asked by kym
  422. PreAlgebra

    Volume of a cube with side length of 26.4 meters I need this by 11/21/12 ASAP

    asked by Zack
  423. math

    how many times less is 400 than 4 million; explain

    asked by frank
  424. Math

    1. Samuel is 2/3 as old as his brother. In five years, he will be 3/4 as old as his brother will be. Find their present ages. a. If x = the brother’s age now, write an expression for Samuel’s present age in terms of x. b. Write an expression for the

    asked by Morgan
  425. U.S history

    what are the 5 states admitted next to the U.S.after 1849 ? please help .

    asked by marie
  426. math pls help Ms Sue

    Find the rule for the function table m n 15 12 10 8 5 4 0 0

    asked by Kyle
  427. algebra

    an 80 pound bag of concrete cost $4 and covers 2.5 square feet how much will cost to cover 504 square feet

    asked by Anonymous
  428. math

    (76-12)-(48divided by 8)2

    asked by Leena
  429. college algebra, Please help!!

    solve the following logarithmic equation 2log2(lower than g)^(x-2)+log2^2=3 x=?

    asked by ladybug,I need help please.
  430. science

    what is the alelles of a tall plant.

    asked by samuel
  431. Algebra 2

    Energy Use Light Output 35 2250 50 4000 70 5800 100 9500 150 16000 What is the quadratic model for the light output with respect to use energy use? I don't understand this at all Please help ):

    asked by Ana
  432. math need help urgent

    find the domain f(x)=x/x-8,g(x)=-7/x solve the following exponential equation equation exact answers only 3e x-1 = 2+e^x-1

    asked by zach w
  433. 5th grade math

    i need help

    asked by jacob
  434. algebra1

    M5P3*(2M-6Q-5)-1 qm0

    asked by frances
  435. math

    estimate each quotient 246.78/83?

    asked by m
  436. math

    Find the rule for each function table m n 15 12 10 8 5 4 0 0

    asked by Kyle
  437. math

    how do you get the percent of 1 over 12

    asked by annonymous
  438. stats & prob.

    Given the values of n=5, p= 0.15, and (1-p)=0.85, calculate the standard deviation of the data.

    asked by Georgia
  439. Maths

    State the x-intercepts of the graph of y=1-x^2

    asked by Shane
  440. math

    what number is 33% of 500?

    asked by j
  441. Math

    x = 3, 10, 5, 8, _, 12, _ y = 7, 10, _, _, 5, _, _

    asked by Brandon
  442. Math

    x = 3, 10, 5, 8, _, 12, _ y = 7, 21, _, _, 5, _, _

    asked by Brandon