Questions Asked on
March 19, 2013

  1. Algebra

    Determine whether each sequence is arithmetic or geometric. Find the next three terms. 14, 19, 24, 29, . . . A.geometric, 34, 39, 44 B.arithmetic, 32, 36, 41 C.arithmetic, 34, 39, 44 D.The sequence is neither geometric nor arithmetic. I think this is C...?

    asked by Cassie
  2. Chemistry

    The Keq for the equilibrium below is 5.4 × 1013 at 480.0 °C. 2NO (g) + O2 (g) ↔ 2NO2 (g) What is the value of Keq at this temperature for the following reaction? NO2 (g) ↔ NO (g) + 1/2 O2 (g) The Keq for the equilibrium below is 5.4 × 1013 at 480.0

    asked by DrewS
  3. Chemistry

    Which solution below has the highest concentration of hydronium ions? pH = 9.82 pH = 12.6 pH = 7.93 pH = 3.21 pH = 7.00

    asked by DrewS
  4. Chemistry

    A 30.0-ml sample of 0.165 M propanoic acid is titrated with 0.300 M KOH. What is the pH at 5 ml of added base, at 10 ml of added base?

    asked by Annie
  5. Chemistry

    A coffee cup calorimeter contains 25.0 grams water at 23.8 C A 5.00g sample of an unknown metal at an initial temperature of 78.3 C was dropped into the calorimeter. The final temperature of mixture was 46.3 C. Calculate the specific heat of the metal. The

    asked by J
  6. Chem

    How many grams of Ni would be electroplated if a constant current of 7.2 amperes is passed through a solution of NiSO4 for 90.0 min?

    asked by George
  7. Arithmetic

    A box in a college bookstore contains books, and each book in the box is a history book, an English book or a science book. If one-third of these books are history books and one-sixth are English books, what fraction of the books are science books? A. 1/3

    asked by Peltier
  8. chem

    How many grams of NH4Cl must be added to 0.560 L of 1.90 M NH3 solution to yield a buffer solution with a pH of 8.50? Assume no volume change. Kb for NH3 = 1.8 10-5. i am confused as how to find the grams?

    asked by hannah
  9. Physics

    A stretched string fixed at both ends is 2.0 m long. What are the three wavelengths that will produce standing waves on this string? Name at least one wavelength that would not produce a standing wave pattern, and explain your answer. I REALLY NEED HELP I

    asked by Rubi Red
  10. Physics

    George pushes a wheelbarrow for a distance of 12 meters at a constant speed for 35 seconds by applying a force of 20 newtons. What is the power applied to push this wheelbarrow? A. 1.2 watts B. 3.4 watts C. 6.9 watts D. 13 watts

    asked by fredrick
  11. Algebra

    What are the domain and range of the function y=2square root 3x+4-5? A.x>=-4/3;y>=-5 B.x>=4/3;y>=5 C.x=5 I think it is A...?

    asked by Cassie
  12. chemistry

    Calculate whether or not a precipitate will form if 1.40 mL of 0.62 M NH3 are added to 4.4 L of 1.0 10-3 M FeSO4.

    asked by Annie
  13. Physics

    Two identical metal spheres have charges of q1 and q2. They are brought together so they touch, and then they are separated. (a) How is the net charge on the two spheres before they touch related to the net charge after they touch? (b) After they touch and

    asked by Jayflord
  14. statistics

    A service station has a pump that distributes diesel fuel to automobiles. The station owner estimates that only about 3.2 cars use the diesel pump every 2 hours. Assume the arrivals of diesel pump users are Poisson distributed. a. What is the probability

    asked by maria
  15. calculus

    assume that during the first 3 minutes after a foreign substance is introduced into the blood,the rate R'(t) at which new antibodies are produced(in thousands of antibodies per minute) is given by R'(t)=t/(t^2+1) where t is in minutes.find the total

    asked by tan
  16. Chemistry

    59.0 mL of a 1.80 M solution is diluted to a total volume of 268 mL. A 134-mL portion of that solution is diluted by adding 171 mL of water. What is the final concentration? Assume the volumes are additive.

    asked by Robert
  17. Math

    Quentin has 18 unit cubes. How many different rectangular prisms can he build if he uses all of the cubes.

    asked by Paige
  18. sciencemath

    Suppose a laboratory has a 31 g sample of polonium-210. The half-life of polonium-210 is about 138 days. How many half-lives of polonium-210 occur in 966 days? How much polonium is in the sample 966 days later?

    asked by Anonymous
  19. Chemistry

    What is the concentration of C2O4^-2 in a 0.370M oxalic acid solution? Ka1=5.6x10^-2 and Ka2=5.1x10^-5

    asked by V
  20. Statistics

    The weight of adult green sea urchins are normally distributed with a mean 52g and standard deviation 17.2g? A. Find the percentage of adult green sea urchins with weighs between 50g and 60g My answer/work: normalcdf (50, 60, 52, 17.2) = .225, 23% B.

    asked by Anonymous
  21. AlgebraB-2

    1. What are the coordinates of the vertex of the graph? Is it a maximum or minimum? 3. How is the graph of y = –2x2 – 4 different from the graph of y = –2x2? (1 point) 4. Graph the function. Identify the vertex and axis of symmetry.

    asked by Jennifer W.
  22. Physics

    Three Point charges have equal magnitudes, two being positive and one negative. These charges are fixed to the corners of an equilateral triangle. As the drawing shows(a) The charge at any one corner experiences forces from the charges at the other

    asked by Jayflord
  23. Chemistry 2 Lab

    Calculate the degree of ionization of acetic acid in solution 1 through 3? All I am giving is the pH... pH of solution 1= 3 pH of solution 2= 3.5 pH of solution 3= 5 Then, I did this... HC2H3O2 (aq) + H2O (l) equals H3O+ (aq) + C2H3O2- (aq) Ka= 1.7 E -5

    asked by Robby
  24. Pre-Algebra

    What association would you expect if graphing height and weight?

    asked by Madison
  25. AlgebraB-2

    1. What is the value of n so that the expression x² + 12x + n is a perfect square trinomial? (1 point)6 36 72 144 2. What are the solutions of the equation x2 + 4x = 96? (1 point) 2, –48 –12, 8 –2, 48 12, –8 3. What are the solutions of the

    asked by Jennifer W.
  26. Physics 11 - Dynamics

    While standing on a horizontal frictionless surface a 50.0 kg student pushes against a wall with an average force of 125 N to the right for 0.110 s. Calculate the velocity of this student at 1.110 s. My answer: Vf = 0.275 m/s My solutions book has Vf =

    asked by Samuel
  27. biomechanics

    peter, a 100 kg baketball player, lands on his feet after completeing a slam dunk and then immediately jumps up again to celebrate his basket. when his feet frist touch the floor after the dunk, his velocity is 5 m/s downward, and when his feet leave the

    asked by Anonymous
  28. chemistry

    Based on the following reaction 2A + 3B --> A2B3, if 1 mole of A is reacted with 2 moles of B, explain how you would determine which of the two substances is the limiting reactant.

    asked by Guy
  29. Algebra

    What are the first four terms of a geometric sequence if the common ratio is 10 and the first term is 4.5? A.4.5, .45, .045, .0045 B.4.5, 9.0, 13.5, 18.0 C.4.5, 14.5, 24.5, 34.5 D.none of the above I think this is D...?

    asked by Cassie
  30. algebra

    Determine whether each sequence is arithmetic or geometric. Find the next three terms. 4, 8, –16, 32, . . . A.arithmetic, 64, 128, 256 B.geometric, –64, 128, –256 C.geometric, –48, 64, –80 .DThe sequence is neither geometric nor arithmetic. I

    asked by Cassie
  31. math

    Rectangular cards,2 inches by 3 inches,are cut from a rectangular sheet 2 feet by 3 feet.What is the greatest number of cards that can be cut from the sheet?

    asked by Anonymous
  32. Calculus

    If a snowball melts so that its surface area decreases at a rate of 4 cm2/min, find the rate at which the diameter decreases when the diameter is 12 cm.

    asked by Maura
  33. Trigonometry

    A car wheel has a 13-inch radius. Through what angle does the wheel turn when the car rolls forward 4 ft?

    asked by Katelyn
  34. Speed'Distance'Time

    Find out the distance covered when, speed is 960 km/hour and time is 1 hour 50 minutes.

    asked by Michelle
  35. Chem

    Hypobromous acid,HOBr, has acid -ionization constant of 2.5 X 10^-9 at 25 Celsius . What is the pOH of a 0.63 M HOBr solution? A4.40 B3.87 C5.20 D9.60 E10.13 I'm getting two answers between A or B

    asked by Chemistry
  36. Chemistry

    Calculate the pH of the 0.20 M NH3/0.25 M NH4Cl buffer. I calculated the pH to be 9.15 What is the pH of the buffer after the addition of 10.0 mL of 0.10 M HCl to 72.5 mL of the buffer?

    asked by Cam
  37. home economics

    Janet Home went to Citizen Bank. She borrowed $7,000 at a rate of 8 percent. The date of the loan was September 20. Janet hoped to repay the loan on January 20. Assuming the loan is based on ordinary interest, Janet will pay back interest on January 20:

    asked by Anonymous
  38. Chemistry

    What is the concentration of CO3^-2 in a 0.028M solution of carbonic acid, H2CO3? For carbonic acid, Ka1=4.2x10^-7 and Ka2=4.8x10^-11

    asked by B
  39. math

    frank cut a pie into 10 equal slices there are only 3 slices left what is the measure of the angle for the 3 slices that are left?

    asked by nikki
  40. chem

    What CH3COONa concentration is required to prepare a buffer solution with a pH of 4.80 if [CH3COOH] = 0.150 M? Ka of CH3COOH = 1.8 10-5.

    asked by hannah
  41. maths

    A box contains 12 bulbs with 3 defective ones. If two bulbs are drawn from the box together.what is the probability that a)both bulbs are defetive b)both are non defective c)one bulb is defective?

    asked by minte
  42. art

    Analyse a work of art for example Jacob Lawrence "GOING HOME" to describe how he used both elements of art and principles of design to create a strong composition.

    asked by Jackie
  43. english

    1. Which of the style guides is most focused on professionals who are writing articles for publication? A.) MLA B.) APA *C.)Chicago Thanks.

    asked by Jack
  44. chemistry

    How many moles of water are produced by the complete combustion of 14.4g of C5H12?

    asked by Moyer
  45. Chemistry

    A scuba diver takes a 2.3 balloon from the surface, where the pressure is 1.1 and the temperature is 28, to a depth of 35 , where the pressure is 4.5 and the temperature is 14.

    asked by Mary
  46. Chemistry

    How do you write a chemical equation for NH4NO3? Is it... NH3 + H2O= NH4 + OH

    asked by Patrick
  47. Chemistry

    What weights of NaH2PO4 and NaHPO4 would be required to prepare a buffer solution of pH 7.45 that has an ionic strength of 0.1? pKa2=7.12 , mwt NaH2Po4=120g/mol NaHPO4=142 g/mol using the henderson-hasselbalch equation i got that the ratio of the

    asked by ??
  48. Physics

    A construction worker exerts 209N to move a load of bricks a distance of 10m across the parking lot,

    asked by Anonymous
  49. Chemistry

    You have a stock 0.100 M solution of KMnO4 and a series of 100-mL volumetric flasks. What volumes of the stock solution will you have to pipet into the flasks to prepare standards of 1.00, 2.00, 5.00, and 10.0x10^-3M KMnO4 solutions? I tried using

    asked by confused
  50. algebra

    The total charge for a taxi ride includes an initial fee of $2.75 plus $2.25 for every 1/2 mile traveled. Joe took a taxi, and the ride cost him $56.75. How many miles did he travel in the taxi? What is the equation? Show your work.

    asked by syram
  51. Physics

    Three Point charges have equal magnitudes, two being positive and one negative. These charges are fixed to the corners of an equilateral triangle. As the drawing shows(a) The charge at any one corner experiences forces from the charges at the other

    asked by Jayflord
  52. Chemistry

    What is the hydroxide ion concentration of a 0.370M oxalic acid, H2C2O4, solution? For oxalic acid, Ka1=5.6x10^-2 and Ka2=5.1x10^-5

    asked by B
  53. Physics

    It is well known that bullets fired at Superman simply bounce off his chest. Suppose that a gangster sprays Superman's chest with bullets of mass m = 2.6 g at a rate of R = 140 bullets/min. The speed of each bullet is v = 510 m/s. Suppose the bullets

    asked by HELP ME
  54. Physics

    Two small charged spheres hang from cords of equal length L and make small angles angle1 and angle2 with the vertical. (a) If Q1 = Q, Q2 = 2(Q) and m1 = m2 = m, determine the ratio angle1/angle2. (b)If Q1 = Q, Q2 = 2(Q) and m1 = m,and m2 = 2(m), determine

    asked by Jayflord
  55. Math

    Someone tossed a coin 80 times.The coin landed on heads 60 times. Is the experimental probability greater than or less than theoretical probability?

    asked by Taya
  56. Chemistry

    1) What is the vapor pressure at 25°C of a solution of 1.20g ofnephtalene C10H8 in 25.6g of benzone C6H6? The vapor pressure of pure benzene at 23°C is 86.0mmHg the vapor pressure of naphthalene can be neglected. Calculate the vapor pressure lowering of

    asked by N comas
  57. Dynamics, Math

    a plane is flying horizontally at an altitude of 420m. A bomb was released, how far horizontally point bomb hit the ground?

    asked by Jenny
  58. Trigonometry

    A bicycle with a 26-inch wheel(diameter) travels a distance of 700 feet. How many revolutions does the wheel make?

    asked by Katelyn
  59. chem

    For the indicated atom in each of the following molecules or ions, give the number and arrangement of the electron pairs around that atom. (a) As in AsO43- number: arrangement: linear bent trigonal planar square planar tetrahedral (b) Se in SeO42- number:

    asked by Jack
  60. Chem

    what is the pOH of a 0.12 M solution of pyridine (Kb=1.4x10^-9) at 25 Celsius

    asked by C
  61. Clueless in calculus

    The function f is defined by f(x)= (25-x^2)^(1/2) for -5 less than or = x less than or = 5 A) find f'(x) B) write an equation for the tangent to the graph of f at x=3 C) let g be the function defined by g(x)= (f(x) for -5

    asked by Aparna
  62. math

    A pendulum swings through an angle of 14 degrees each second. If the pendulum is 17cm in length and the complete swing from right to left lasts 3 seconds, what area is covered by each complete swing?

    asked by Katelyn
  63. physics

    A particle starts moving with acceleration 2 m/s2. distance travelled by it in 5th half second is..??

    asked by ABC
  64. Dynamics, Math

    a plane is flying horizontally at an altitude of 420m. A bomb was released, how far horizontally point bomb hit the ground?

    asked by Jenny
  65. chemistry

    How many moles of sulfate ions are in 100 ml of a solution of .002 M Fe2(SO4)3?

    asked by Moyer
  66. math

    a circular table is painted yellow with a red square in the middle the radius of the tabletop is 6x the side legh of the red square is 3x what is the area of the yellow part of the tabletop. write answer in factored form

    asked by sadai
  67. Trig

    True or False: For a trignometric function, y = f(x), then x = f^-1(y). Explain your answer. Thanks.

    asked by Clarissa
  68. Chemistry

    Solution x has a pH of 4.35. Solution y has 10- times high [OH-] compared to solution x. Solution z has a pH 4.0 units higher than that of solution x. calculate the ration of [H3O+] between solutions x&y and between x&z. What is the pH of solutions y and

    asked by mary
  69. Physics

    A construction worker exerts 209N to move a load of bricks a distance of 10m across the parking lot,how much work does he do?

    asked by Anonymous
  70. Thermochemistry

    My question is more conceptual. It is expressed in a series of two problems: What energy change occurs when 1.2 moles of methane combust with an enthalpppy change of -434 KJ? CH4+2O2 TO CO2+2H20 I understand it is simply the moles of mthane times the

    asked by Sean
  71. Chem

    what is the hydronium-ion concentration at equilibrium in a 0.71 M solution of aniline (Kb=4.2x10^-10) at 25 Celsius

    asked by Che
  72. Science

    A construction worker exerts 209N to move a load of bricks a distance of 10m across the parking lot,how much work does he do?

    asked by Anonymous
  73. Chem

    What is the equilibrium concentration of chloroacetic acid in a solution prepared by dissolving 0.0314 mil of chloroacetic acid in 1.10L of water? For chloroacetic acid, Ka= 1.4X10^-3

    asked by Chemistry
  74. Chemistry

    What is the hydronium ion concentration in a 0.010M solution of carbonic acid, H2CO3? For carbonic acid, Ka1=4.2x10^-7 and Ka2=4.8x10^-11.

    asked by C
  75. math

    write expanded notation.40,050

    asked by bryant
  76. Math

    Ginny Katz has decided to invest $700 quarterly for 10 years in an ordinary annuity at 8 percent. The total cash value of the annuity at end of year 10 is?

    asked by Aaron
  77. Soc. Studies

    What was the Compromise of 1850? A.the simultaneous admission of Maine and Missouri as states in order to preserve the balance between slave and free states in the Union B.the agreement that allowed California to enter the union as a free state C.the bill

    asked by Cassie
  78. Science

    The Keq for the equilibrium below is 5.4 × 1013 at 480.0 °C. 2NO (g) + O2 (g) ↔ 2NO2 (g) What is the value of Keq at this temperature for the following reaction? NO2 (g) ↔ NO (g) + 1/2 O2 (g) The Keq for the equilibrium below is 5.4 × 1013 at 480.0

    asked by DrewS
  79. simple GEOMETRY!!

    In triangle ABC, ∠ABC=30∘,∠ACB=60∘. D is a point in triangle ABC such that DB and DC bisect angles ABC and ACB respectively. What is the measure (in degrees) of ∠BDC?

    asked by please..anyone help!!
  80. math

    fill in the blank to make the expression a perfect square v^2-16v+

    asked by mace
  81. Chem

    in a 0.01 M solution of 1.4 butanedicarboxylic acid, (Ka1=2.9x10^-5, Ka2=5.3x10^-6), which species is present in the lowest concentration?

    asked by Chemistry
  82. Science

    Which solution below has the highest concentration of hydronium ions? pH = 9.82 pH = 12.6 pH = 7.93 pH = 3.21 pH = 7.00

    asked by DrewS
  83. Chemistry

    Acetone has a delta Hvap of 29.1 kj/mol and a normal boiling point of 56.2 degrees Celsius. At what temperature (in degrees Celsius) does acetone have a Pvap = 118 mm Hg?

    asked by Brennan
  84. Trig

    True or False: For a one-to-one function, y = f(x),then x = F^-1(y). Explain your answer. Please help.

    asked by Clarissa
  85. Physics

    A construction worker exerts 209N to move a load of bricks a distance of 10m across the parking lot,how much work does he do?

    asked by Anonymous
  86. physics

    A(n) 96.1 g ball is dropped from a height of 59.1 cm above a spring of negligible mass.The ball compresses the spring to a maximum displacement of 4.75403 cm. The acceleration of gravity is 9.8 m/s^2. Calculate the spring force constant k. Answer in units

    asked by Anonymous
  87. Arithmetic

    A box in a college bookstore contains books, and each book in the box is a history book, an English book or a science book. If one-third of these books are history books and one-sixth are English books, what fraction of the books are science books?

    asked by Peltier
  88. math

    The strongest recorded earthquake in the world took place in Chile on May 22 1960. It had a magnitude of 9.5 on the Richter scale. The strongest quake actually recorded in Canada was magnitude 8.1 on August 22 1949 and occurred off the Queen Charlotte

    asked by Samantha
  89. Chemistry

    Assume you started with a 0.642 gram sample of Sodium Bicarbonate and aster adding an excess of hydrochloric acid and carrying out the experiment correctly, you calculateed there was a 94.8% yield of sodium chloride. What was the experimental yield of

    asked by Yaneth
  90. science

    Suppose a laboratory has a 31 g sample of polonium-210. The half-life of polonium-210 is about 138 days. How many half-lives of polonium-210 occur in 966 days? How much polonium is in the sample 966 days later?

    asked by Anonymous
  91. English

    1.Truthfulness and sincerity are the (earmarks,compacts) of an honest person earmarks 2.As election day is getting closer the tone of the candidates political oratory becomes more and more (titanic,strident) titanic 3.What do you think the U.S. should do

    asked by Jerald
  92. English

    An essay-type exam is an example of a(n): A. objective test. B. written test. C. subjective test. D. academic writing. is it B An example of an objective test is: A. short answers. B. essay-type exam. C. fill in the blanks. D. discussion board. is it D

    asked by Amy
  93. Chemistry

    In an experiment with a titration of Vitamin C with Iodine, why must the iodine dropper be standardized?

    asked by Ashley
  94. chemistry

    Acetic acid, CH3CO2H, is the active ingredient in vinegar. It's often abbreviated "HOAc". Vinegar is acidic because acetic acid makes H3O+ when it partially ionizes in water: HOAc(aq) + H2O H3O+(aq) + OAc–(aq) Suppose that you have a solution of

    asked by hannah
  95. accounting

    Nature’s Way, Inc., keeps one of its production facilities busy making a perfume called Essence de la Vache The $32,800 beginning inventory in the Blending Department consisted of the following elements: materials, $8,000; direct labor, $4,000; and

    asked by Anonymous
  96. Physics

    A 50.0-kg box is resting on a horizontal floor. A force of 250 N directed at an angle of 20.7° below the horizontal is applied to the box. The coefficient of kinetic friction between the box and the surface is 0.300. What is the acceleration of the box?

    asked by Joe
  97. Statistics

    A market research company employs a large number of typists to enter data into a computer database. The time taken for new typists to learn the computer system is known to have a Normal distribution with a mean of 2.167 hours and a standard deviation 20

    asked by Anonymous
  98. circuits

    when a parallel 5k ohm resistor and a 25k ohm resistor have a 10v supply, what is the total power loss?

    asked by Anonymous
  99. physics

    A parallel beam of light is incident on diverging lens of focal length 12cm. The emergent beam passes through a converging lens of focal length 20cm placed coaxial with it. The beam which finally emerges from the converging lens,comes out parallel. What is

    asked by Jorel
  100. Trigonometry

    Two wheels are rotating in such a way that the rotation of the smaller wheel causes the larger wheel to rotate. The radius of the smaller wheel is 4.4 centimeters and the radius of the larger wheel is 20.9 centimeters. Through how many degrees wil the

    asked by Katelyn
  101. Math-statistics

    During the 2000 season, the home team won 138 of the 240 regular season National Football League games. Is this strong evidence of a home field advantage in professional football? Test an appropriate hypothesis and state your conclusion. Be sure the

    asked by Bettie
  102. Chem

    in a 0.40 M solution of diprotic acid H2A(Ka=7.4x10^-5, Ka2=5.0x10^-10 at 25 celsius), what is the equilibrium concentration of A^2-? A)0.40m b)0.80M C)5.4x10^-3m d)1.4x10^-5M E)5.0x10^-10M

    asked by C
  103. Chemistry

    What is the enthalpy for the following reaction? N204 = 2NO + O2

    asked by A
  104. Algebra

    Please help me. Please show work. What are the domain and range of the function y=2 square root 3x + 4-5? *A.) X >/= -4/3; Y >/=-5 B.) X >/= 4/3; Y >/= 5 C.) X

    asked by Jack
  105. Physics help ASAP please

    a boat can travel 3m/s in still water. a boatman wants to cross a river while covering shortest distance. how long will it take him to cross the river if speed of water is 2m/s

    asked by sibusiso
  106. Calc

    range of f(x)= 5^(2x^2-1)^(1/2) i know that the domain of the inverse would be the range of this and i've found the inverse but it has natural logs in it and i don't know how to find the domain with that.. i feel like i'm missing something simple

    asked by Aparna
  107. math urgent :(

    1.)A number decreased by 32 is -58. Find the number. The number is ____. (Give only the value of the number as your answer. 2.)The product of 14 and n is -28. Write the algebraic equation 3.)A blue bike is $14 less than a red bike. The sum of their prices

    asked by tyneisha
  108. Chemistry

    Molar Volume(1mole=24.4L at STP) Question: Convert 40mL to moles I converted 40mL to .04L *Need help in coverting .04L to moles

    asked by JOY
  109. math

    A sensor light can detect motion for a distance of 70ft. with a range of motion of 189 degrees. Over what area will the sensor detect motion and become illuminated?

    asked by Katelyn
  110. Chemistry

    During the standardization procedure of the iodine dropper, a student used 10.0 mL of a 1.00 mg.mL standard of Vitamin C. After adding 41 drops of iodine to the 10.0 mL of the standard, the sample was a deep blue. Calculate how many mg of Vitamin C are

    asked by Ashley
  111. Trigonometry

    A pendulum of length 17.6 inches swing 1 degree and 5 minutes to each side of its vertical posisition. To the nearest hundreth of an inch, what is the length of the arc through which the end of the pendulum swings?

    asked by Katelyn
  112. Trig

    A pulley with a diameter of 24 inches is driven by a belt which is moving 1045 ft/min. How many revolutions per minute are made by the pulley?

    asked by Katelyn
  113. chem

    Using the VSEPR theory, predict the molecular structure of each of the following molecules. (a)NI3 (b)AsH3 (c)OF2

    asked by Shady
  114. Physics

    (1)A battery drives 60c of charge in a circuit for 20s. Thecurrent in the circuit is?(2)What is the volume of a block of expanded polystyrene of 400g and density 16kg/m3?(3)The velocity of a toy car of mass 2kg increased from 5m/s to 10m/s in 2seconds.What

    asked by kingstone
  115. math ALG 2!

    1.)A number decreased by 32 is -58. Find the number. The number is ____. (Give only the value of the number as your answer. 2.)The product of 14 and n is -28. Write the algebraic equation 3.)A blue bike is $14 less than a red bike. The sum of their prices

    asked by tyneisha
  116. math

    i.imgur[dot]com/hE0sWBt[dot]gif prove. [steve- please take another look at this.]

    asked by Hasane
  117. math ALG 2!

    1.)A number decreased by 32 is -58. Find the number. The number is ____. (Give only the value of the number as your answer. 2.)The product of 14 and n is -28. Write the algebraic equation 3.)A blue bike is $14 less than a red bike. The sum of their prices

    asked by tyneisha
  118. chemistry

    What is the percent by volume (% v/v) of a solution made by mixing 12 ml of ethanol (C2H5OH) with 48 ml of water? b) Assuming the density of ethanol is 0.789g/ml, what is the molarity of this solution?

    asked by ben
  119. early childhood

    guidelines for early childhood programs tor typical children a.) should be the same for exceptional children b.) are usually insufficeint for exceptional children c.) are not appropriate for exceptional children or d.) cannot be adapted for use with

    asked by sahar mostafa
  120. algebra

    Circle O has a circumference of 220 meters. What is the approximate area of circle O? Show your work.

    asked by syram
  121. Chem

    what is the percent ionization at equilibrium in a 0.31M solution of dimethylamine (Kb=4.2x10^-10) at 25 Celsius

    asked by Che
  122. Chemistry

    How many milliliters of 11.5 M HCl(aq) are needed to prepare 310.0 mL of 1.00 M HCl(aq)?

    asked by Robert
  123. math ALG 2!

    Four times a certain number is the same as the number increased by 78. Find the number i thought it was 20.plz help

    asked by ty
  124. Math

    5 books and 9 magazines cost $150.50 dollars altogether. 9 Books and 5 magazines cost $175.70. How much does 1 book and 1 magazine cost? Please show work

    asked by Nomad
  125. chapter 14, lesson 5

    max cut a pole into 4 equal pieces. then he cut 2 inches off one piece of the pole. then piece left was 4 inches long. how long was the pole to before Max started cutting?

    asked by nicole
  126. Math 12

    A tree growing on a slope of 13 degree to the horizontal is 14m tall. Find the length of the shadow it casts up the hill when the sun is at an angle of elevation of 30 degree. (The shadow is cast directly up the slope by the sun)

    asked by Jim
  127. math

    a rectangle has an area of 64 inches2.a staright line is to be drawn from one corner of the rectangle to the mid point of one of the two more distant sides.what is the minimum posible length of such a line

    asked by remi
  128. Biology

    Eutrophication refers to 1. the concentration of a toxic substance in the tissues of organisms. 2. depletion of mineral resources as a result of leaching. 3. the warming of the earth’s surface. 4. the damage to the ozone layer that protects the earth

    asked by Elena
  129. geometry

    Ok, so I have this worksheet due, and it's for a lot of points, so can you check over my answers please? Can you leave your email so I could forward the scan to you? The worksheet has a lot of labeled shapes, so it's hard to describe in text. These are the

    asked by MathMat
  130. calculus

    This is the question: "A new fruit juice (like a Popper) is to be marketed in a new container in the shape of a rectangular prism. The cardboard container is to have a square base and is to contain 300 mL of juice. What should be the dimensions of the

    asked by Jamal
  131. Math

    I have posted this over 3 times and I just want to know if I did the 2nd part correctly with v. Do you multiply it by 10 for 10 cubes or 32 for 32 sides for all of them. Can anyone please help, I just want to learn the correct way to do this. Thanks! The

    asked by Es- CAN ANYONE HELP?
  132. Local government

    How to write an informational paragraph on structure of our local goverment ( I live in miss ) & shiw what strategy I used b4 writing

    asked by Desarae
  133. Finance

    you have contacted a number of dearlerships to determine the best interest rate on a new car loan, dealship quoted a 5 year, 10% loan in the amount of $35,000 that will require monthly payments. What is the monthly loan payment. And what will the loan

    asked by Miller
  134. Quadratic function

    Determine the quadratic function f whose graph is given. The vertex is (-3,-13) and the y-intercept is -4 f(x)=

    asked by Jenn
  135. math

    A large cylinder has a volume of about 5,400 cubic cm. A small cylinder is similar in shape to the larger cylinder with a scae factor of 2/3.Which measurement is closest to the volume of a cylinder. f)1600cubic cm g)2400 cubic cm h)2700 cubic cm j)3600

    asked by Courtney
  136. chemistry

    How many moles of hno3 neede to prepare 7.5 l of a 5.6m solution

    asked by krystal
  137. Chemistry

    What is the pH of a 0.20 M HF solution that is 5.8% ionized at 25 Celsius ? A.4.45 b.0.70 C.1.93 D.1.23 E.1.40

    asked by Chem
  138. Statistics

    4. The data below are from an independent-measures experiment comparing three different treatment conditions. Treat. 1 Treat 2 Treat 3 0 1 4 0 4 3 G=24 0 1 6 2 1 3 Ó X² = 92 T=2 T=6 T=16 SS=3 SS=9 SS=6 Use an analysis of variance with á of .05 to

    asked by Pam
  139. Social Studies

    Which state is the least densely populated? 1. Alaska 2. Hawaii 3. Minnesota 4. New Jersey My Answer: # 2 Hawaii

    asked by Selena
  140. Algebra

    What is the domain of the function y=3 sq root 6x+42 ? x ¡Ý 0 x ¡Ü 7 x ¡Ý ¨C6 x ¡Ý ¨C7 I think it is D...?

    asked by Cassie
  141. analytic geometry/graphing problem

    The vertices of a triangle are the points of intersection of the line y=-x-1, x=2 and y = 1/5x + 13/5. Find an equation of the circle passing through all three vertices. I don't understand how to solve this: should I set them all equal to find the

    asked by Knights
  142. Life orientation

    What,according to the basic condition of employment act applies with regard to the contravention

    asked by Yonela
  143. early childhood

    1.) the best example of an embedded learning experience is a.) counting from one to 20 just to practice b.) saying the alphabet while a teacher points to the letters c.) counting out napkins for each child at snack time. d.) tracing letters on a worksheet.

    asked by sahar mostafa
  144. physics

    Your friend is far-sighted with a near-point distance of 512 cm. What should the focal length be for the lenses in his reading glasses? Assume the glasses are placed 2.0 cm in front of his eyes.

    asked by Anonymous
  145. physics

    a converging lens has a focal length of 15cm. Find two positions where a real object can produce images four times its size.

    asked by Anonymous
  146. chemistry

    liquid water + liquid oil + water vapor how many phases does this system have? If it's 3 ... why can't we say it's 2 taking in consideration the liquid part and the vapor part "states of matter also called phases" ... Please try to explain this concept if

    asked by m1m2m3m4
  147. Biology

    Why is it difficult for a mutation to occur that would change the genetic code?

    asked by Candy
  148. Physics

    The current in a 5.00mH inductor drops from 2.50A to zero in 5.ooms. What is the average emf induced in he inductor?

    asked by Tiffany
  149. Physics

    How can we find the resultant force if the mass and SPEED are given?? Help me please!!

    asked by Vathana
  150. calculus

    The total number of people infected with a virus often grows like a logistic curve. Suppose that 15 people originally have the virus, and that in the early stages of the virus (with time,t , measured in weeks), the number of people infected is increasing

    asked by Anonymous
  151. urgent urgent algebra

    find the composite function fog f(X) = 1/X-5,g(x)-6/x question 2 find inverse, domain range and asymatotes of each function f(x)=3+e^4-x can some one help me please been stuck on these for 2 days need help solving thank you

    asked by zachary
  152. Physics

    The process of inhalation in the lung may be modelled (very simplistically) by the pV diagram shown below , in which the pressure drops sharply in the lungs at constant volume, followed by expansion at constant pressure, and then finished by the pressure

    asked by Sarah
  153. math(statistics)

    suppose a random variable X can equal to 1,2,3,4,or 5. if P(x3)=.5 (a)p(x=3) and b P(x

    asked by Ron
  154. Art

    These two technological advancements of the Industrial Revolution helped lead to the development of Impressionism. (1 point) the railroads and the printing press the railroads and photography photography and electric lighting the automobile and electric

    asked by PersonWithTheFace
  155. math

    One-quarter of the chicken pieces in the dish are wings. There are 7 wings. Hiw many chicken pieces are in the dish? Write an equation to solve the problem.

    asked by Cherie
  156. 007031 Quadratic Equations

    i need the test answers

    asked by Anonymous
  157. Math

    Sofia has a plate that has 4 equal sides, 2 pairs of parallel sides, and no right angle. Which quadrilateral is it?

    asked by Pietro
  158. economics

    what are mandatory and discretionary spending?

    asked by working hard
  159. English

    Word box abduct ambiguous balk compact confer earmark frigid implement incalculable indisputable intensive maneuver sabotage scant stealthy strapping strident thrive titanic valiant 3.The millionaire has hired special guards to make sure that his children

    asked by Jerald
  160. Life science

    Investigate the effect of the environment on phenotype

    asked by Bongane
  161. Math

    On a single draw from a shuffled deck of 52 cardsm find the probability in favor of drawing a club and a jack.

    asked by LaChellle
  162. English

    Please help with this question that has been bothering me! I take bio college class and we have graduate/student assistant for labs & when taking an exam. The professor is never there during those sections.Due to my low exam results,I feel I'm not being

    asked by Leah
  163. Use completing the square to...

    Use completing the square to describe the graph of the following function support your answer graphically. f(x)=-2x^2+4x+1

    asked by Jenn
  164. Find Errors in Text

    What are the most obvious, often seen, errors in the following text taken from a question this website? " The 18th century brought even more historical events in Mathematics. The knowledge of the natural numbers are preserved in monolithic structures, it

    asked by Agood Righter
  165. life orintetion

    what unethical behaviour is taking place in the case study?name two

    asked by zama
  166. life science

    explain about polyploidy

    asked by zama
  167. math 140

    I have two questions posted that has not been answered please help. The questions were posted on March 18 please help.

    asked by betsy
  168. Calc

    f(x)=2ln(x^2+3)-x Domain [-3,5] how do i find the absolute maximum value of this?

    asked by Aparna
  169. Science

    Find examples of the golden ratio in nature -- a minimum of 10 examples. Explain how your examples of the golden ratio in nature relates to symmetry found in the animal kingdom.

    asked by Sue
  170. spell

    SYLLABLE PATTERNS V/CV AND VC/V

    asked by JAH
  171. Math

    instruments played in a band include a piano drum guitar and saxophone.dave does not use his mouth to play his instrument. ted and lindas instruments have strings. dave, sue and linda carry their instruments.who plays each instrument?

    asked by Gio
  172. college algebra

    Solve, what is the easiest way to solve this equation? 9x^4+4=13x^2 and x^6-19x^3=216 Thanks, in advance..

    asked by Anonymous
  173. Chemistry 104

    What is the percent ionization of a solution prepared by dissolving 0.0286 mol of chloroacetic acid in 1.60 L of water? For chloroacetic acid ,Ka=1.4x10^-3

    asked by Chemistry
  174. Maths

    ABC is a right angled triangle with ∠ABC=90∘ and side lengths AB=24 and BC=7. A semicircle is inscribed in ABC, such that the diameter is on AC and it is tangent to AB and BC. If the radius of the semicircle is an improper fraction of the form a/b,

    asked by Stranger
  175. Statistics

    What is the 75th percentile of the adhesion distribution? A locomotive's 'adhesion' is the locomotive's pulling force as a multiple of its weight. A diesel locomotive model has adhesion which varies in actual use according to a Normal distribution with a

    asked by Anonymous
  176. Statistics

    How high must a student score to place in the top 10% of all students taking the SAT? Scores on the SAT verbal test in recent years follow approximately the Normal with mean 504 and standard deviation 111. This is what I did. 1-.10=.9 Then I entered the

    asked by Anonymous
  177. math help

    write the quadratic equation whose roots are -4 and -5 and whose leading coefficient is 5 use the letter x to represent the variable. use the quadratic formula to solve for x 4x^2-9x+3=0

    asked by mace
  178. Algebra

    Determine the quadratic function of f whose vertex is (2,-1) and passes through (3,1) f(x)=

    asked by Jenn
  179. statistics

    assume that the volume of drink is normally distributed, with a mean of 2.0 liters and a standard deviation of 0.05 liter. Using the random sample of 45 bottles. The probability is 99% that the sample mean will contain at least how much soft drink?

    asked by virginia
  180. math ALG 2!

    Write the following value in scientific notation. 0.00000021 i think its 2.1x10 but i really think its wrong

    asked by ty
  181. English

    The best way to reduce stress and anxiety in testing is: A. getting sleep and eating healthy. B. greathing well during testing. C. prepare and study well. D. take good notes. is it C Test-taking strategies are about knowing how to: A. study. B. memorize

    asked by Amy
  182. math

    mikas piggy bank cotains 12 pennies6nickels4 dimes and 8 quarters.which best represents the fraction of mikas coins that are pennies1

    asked by savannah
  183. 5th grade math

    mrs jones wrote 8 personal letters and addressed 8 envelopes to 8 different people. she placed each letter in an envelope, but when she got to the last one for Judy Ogg she had an envelope for Sheri Ford. What is the minimum number of envelopes she would

    asked by Reece
  184. Chemistry

    Need help with problem (Molarity) How many grams of NaOH are required to prepare 500.0mL of a 2.00 M solution?

    asked by JOY
  185. Physics

    The process of inhalation in the lung may be modelled (very simplistically) by the pV diagram shown below , in which the pressure drops sharply in the lungs at constant volume, followed by expansion at constant pressure, and then finished by the pressure

    asked by Sarah
  186. Biology

    What is the main cause of brown or photochemical smog? 1. emissions from aircrafts 2. aerosol cans and coolants 3. emissions from automobiles 4. coal-burning industries 5. river pollution through discharge of industrial wastes

    asked by Amy
  187. Physics

    A pendulum is released from some height. When it reaches the bottom of its swing, its speed is 2.5 m/s. What is the initial height of the pendulum?

    asked by Wilson
  188. Chemistry

    (Ideal Gas Law) Calculate the volume of a 0.25 mole sample of gas at 25.0 degreeC and a pressure of 1.50 atm (R= 0.0821)

    asked by JOY
  189. 2 questions really urgent

    sorry i have 2 more questions: what happens when a contour line crosses a river: stays flat, bends upstream , stops why do contour lines never cross eachother: they each represent a different elevation, the map would be too confusing, you cant tell the

    asked by Polly
  190. Chemistry

    A student completed the standardization procedure & found that the value for her dropper was 0.133 mg Vitamin C/dp l2. The student then selected a juice & titrated it with the iodine from the dropper bottle. The sample turned blue with the addition of the

    asked by Ashley
  191. Finance

    you have contacted a number of dearlerships to determine the best interest rate on a new car loan, dealship quoted a 5 year, 10% loan in the amount of $35,000 that will require monthly payments. What is the monthly loan payment. And what will the loan

    asked by Miller
  192. Art

    Describe how elements of art and principles of design work together to form a composition

    asked by Jackie
  193. Physics - Heat and phase change

    Consider a 14.3 g sample of steam initially at 100*C. How many kilojoules equal the amount of energy emitted by this sample as it condenses, cools to it's freezing point, and subsequently freezes to form ice at 0*C

    asked by Jos
  194. Math

    t/-9 + 8= -5 Please help with this when I do it my answer is not -5.

    asked by Cherie
  195. math

    veronica aims her flashlight at the ceiling. what geometric figure is suggested by the beam of light

    asked by per
  196. math

    30 + 20 / ((1 * 5) * 2) =

    asked by donna
  197. fractions

    Find 3 equivalent fractions for 4/12.

    asked by ttuuffyy
  198. Language Arts

    Help Ms. Sue! Please check if I'm correct on this question. * Which of the sentences below is the best option for a thesis statement? A.) An after-school program at the community center might involve classes, sports, and other activities in which children

    asked by Joe
  199. Heat energy

    CORRECTION (a). 500g of copper is heated from 30 degree celcius to 120 degree celcius, what is the quantity of heat supplied?(b). If the same quantity of heat is supplied to 300g of water initial at 30 degree celcius. What will be the final temperature.

    asked by Precious
  200. mt

    a particle p starts from a point a with velocity 4m/s.if it is moving along a strait line ab with an acceleration of -1.5t^2 at a time t seconds, find acceleration,diplacment after ten seconds,velocity

    asked by Anonymous
  201. CTU

    Assume the economy has gotten better and that the funds now have a return of 7.72% compounded monthly. Diane salary has risen now she can contribute $1000 per month. At the end of the next 15 years, how much is her account worth?

    asked by Najee
  202. pathology

    how does chronic bronchitis lead to emphysema and how the cor pulmonale is developed?? i have gone through couple of websites but couldn't find clear answer if someone can please explain a bit, thanks! waiting for answers

    asked by yao
  203. English

    I took two exams and iffy about my results. Exam one:32/46.8 A >= 46.8 B >= 41.6 C >= 38.5 D >= 33.0 Exam two: 54/100 (curve (Bonus)6%. Thank you!

    asked by Amy
  204. statistics

    The marketing department of a company would like to introduce 12 monthly special products in the coming 12 months. If these monthly special products are selected randomly from 24 products, find the probability that two specific products are the monthly

    asked by Alberta
  205. math

    Prove: 3/(log_2 (a)) - 2/(log_4 (a)) = 1/(log_(1/2)(a))

    asked by Hasane
  206. Physics

    How would you derive the formula {-Ff+Fgx=ma} to show that µs=tanè

    asked by po
  207. Physics

    What happens to the vibrating length of a resonance tube if a loud speaker is brought close to a displacement node?

    asked by Priscy
  208. curriculum development

    The size of a play/work area in the class made a noticeable difference in the time children stayed there and were engaged in complex play. The best size area is A) small and open B) large and open c) small and sheltered or d) large and sheltered. is B)

    asked by Nancy
  209. math

    Is log_3 (5) equal to log_5 (3)? Explain your answer. Do not evaluate the logarithms.

    asked by Hasane
  210. Algebra-PLEASE Help

    I have 3 questions posted will someone please look at them...thanks

    asked by Cassie
  211. algebra

    What is the formula to find the area of a circle?

    asked by syram
  212. medical office practice

    can you help me with the assignment for job19 in the book it is a transcription assignment

    asked by marcella
  213. Physics

    What is the moment of force?

    asked by kingstone
  214. Language Arts

    Need help figuring out which is the correct way to write the sentence. 1. In the summer we were going to the beach, and had a flat tire. 2. In the summer, when we were going to the beach, we had a flat tire. Thanks....

    asked by Brandi
  215. Statistics PLZ HELP Urgent!!!!

    PLZ Help me with the following questions! very urgent! The marketing department of a company would like to introduce 12 monthly special products in the coming 12 months. If these monthly special products are selected randomly from 24 products, find the

    asked by Alberta
  216. pathology NEED HELP

    how does chronic bronchitis lead to emphysema and how the cor pulmonale is developed?? i have gone through couple of websites but couldn't find clear answer if someone can please explain a bit, thanks! waiting for answers

    asked by yao
  217. billing and insurance

    I need to know what the cpt code is for a bilateral iliac arteriogram

    asked by Jane
  218. algebra

    In a class of 50 students, the number of women is 2 more than five times the number of men. How many women are in the class?

    asked by l
  219. English

    Can someone check these sentences, please? Thank you. 1) Hi! I’m Mr Radcliffe. Today I would like to tell you about an unpleasant story which happened to me last Friday . 2) It was a beautiful day so I decided to invite our friends, Mr and Mrs Ghandon,

    asked by John
  220. algebra

    How would i solve -0.1x+(-1)>-0.4

    asked by syram
  221. World Geography

    For good crops, Syrian farmers are still largely dependent on what?

    asked by Alyssa
  222. maths

    find the value of a and b if (a+b)/2=10 and(a.b)*(a.b)=8 .

    asked by ashutosh
  223. english

    Hi! Director of Central London Hatcheries shows a group of young men around their facilities. Babies are grown in bottles (World State Society)Director shows the group the five castes: Alpha, Beta, Deltas, Gammes, Epilsons. The director shows how children

    asked by katlyn
  224. Math

    What is the inverse trig function cotangent of square root of 3/3? What is the value?

    asked by Bob
  225. Physics

    Sammy Sosa

    asked by Chloe
  226. algebra

    How would i solve 3(x-2/3)=-10

    asked by syram
  227. college chemistry

    for my lab i used 2.0mL of NaOH solution and it doesnt have a density in (g/mL)... is there still a way to calculate the moles to it? unless there is a density to NaOH

    asked by Anonymous
  228. Physics

    Three cylinders with the same size, density and structure are piled on each other on top of a rough surface. Find the minimum angle which the direction of the force acting between the cylinders and rough surface makes with the vertical?

    asked by Chipotle
  229. Calc

    f(x)=2ln(x^2+3)-x Domain [-3,5] how do i find the absolute maximum value of this?

    asked by Aparna
  230. math

    i.imgur[dot]com/hE0sWBt[dot]gif prove. [steve- please take another look at this.]

    asked by Hasane
  231. math

    arrange in descending order: 4/5, 6/20, 8/24 and 5/8.

    asked by john
  232. math ALG 2!

    A blue bike is $14 less than a red bike. The sum of their prices is $300. How much is the red bike? i thought it was 123 but i think its wrong.plz help

    asked by ty
  233. Quantum

    What is the superposition that results if you apply the Hadamard transform H⊗n to the state 12√(|0n⟩+|1n⟩)? (Here, |0n⟩:=|00⋯0n⟩ and |1n⟩:=|11⋯1n⟩.)

    asked by lana
  234. chemistry

    if the molar mass of BaCl2 is 208.3 g/mol, how many grams are present in 0.25 moles?

    asked by sam
  235. Quantum

    What is the superposition that results if you apply the Hadamard transform H⊗n to the state 12√(|0n⟩+|1n⟩)? (Here, |0n⟩:=|00⋯0n⟩ and |1n⟩:=|11⋯1n⟩.)

    asked by lana
  236. math

    what is 4.5mi/h = ft/sec

    asked by Kaitlynn
  237. Algebra

    A single-engine airplane carries enough fuel for an 8-hour flight. After the airplane has been flying for 1 h, the fuel tank begins to leak at a rate that would empty the tank in 12 h. How long after the leak begins does the plane have until it runs out of

    asked by Kecin
  238. Calc

    f(x)=2ln(x^2+3)-x Domain [-3,5] how do i find the absolute maximum value of this?

    asked by Amanda
  239. maths

    a=19.85 b=0.145

    asked by ashutosh
  240. spelling

    write the sentence with a verb in the incorrect tense correctly. welcome, friends of the Zoo! I'd like to thank all of you who kindly donate your time to our local zoo. It's a great honor to be asked to speak at the opening of the Reptile House. As you

    asked by JAH
  241. pope

    Which of the following will help you produce clear and focused writing? A. Brainstorming before writing. B. A rubric that provides criteria. C. A solid thesis statement. D. The style of your paper.

    asked by john
  242. maths-probabilty

    There are two bags out of which Bag 1 contains 2 white and 3 red balls and bag 2 contains 4 white and 5 red balls. 1 ball is drawn at random from one of the bags and is found to be red. Find the probability that it was drawn from bag 2

    asked by anoynomous
  243. chemistry

    the enzyme that takes in the SO2−4 that provides the sulfur atom for cysteine.

    asked by ismail
  244. trig

    I keep trying to find the power reducing formula for sin^4(x), but I can't seem to get all the fractional parts correct. The answer I should be getting is: sin^4(x)=(1/8)cos4x-(1/2)cos2x+(3/8) I can only get this far knowing feeling confident. When I go

    asked by Josh
  245. History

    What was the catalyst to World War1 ?

    asked by Kammi
  246. Statistics

    Find the value of Z = 0.15?

    asked by Anonymous
  247. Maths

    Let 3^a be the highest power of 3 that divides 1000! . What is a ?

    asked by John
  248. Math

    How to find the exact value of tan(sin^-1x/2) I'm having trouble with finding the inverse of sin x/2 value.

    asked by Bob
  249. mathematics

    write the all formules of mean & medium

    asked by Anonymous
  250. MATH

    WHY IS IT IMPORTANT TO SIMPLIFY RADICAL EXPRESSIONS BEFORE ADDING OR SUBTRACTING? HOW IS ADDING RADICAL EXPRESSIONS SIMILIAR TO ADDING POLYNOMIAL EXPRESSIONS?

    asked by STACEY
  251. Stats

    1. The question asks to choose a data point in our graph (we chose 476,44) of median home prices (x) and percentage of students who scored Advanced on math MCAS (y). We have to find the residual. I'm confused because the equation I was given is e=y-yhat I

    asked by Jill
  252. huy

    what does each culture brings with it

    asked by hai
  253. physics

    A slide is 5 inches high. it is placed 5.5 inches from the convex lens of a porjection lantern. The image is cast upon a screen 55 inches away. the focal length of the lens is ______inches? b) the heigh of the image cast by the lens is ________inches?

    asked by Jo
  254. maths

    what are the binary representtations of the following decimal numbers? 17,29,38

    asked by RHEA
  255. math ALG 2!

    Write the following value in scientific notation. 23,000,000 i don't understand

    asked by ty
  256. maths

    what are the binary representtations of the following decimal numbers? 17,29,38

    asked by RHEA
  257. Ashford

    Often, after graduation, students report that they can barely remember some of the concepts they studied in school. This is particularly true if a difficult concept is introduced. As asymptotic notation is perhaps one of the most difficult concepts to

    asked by Sarah
  258. Math

    How much paper is used for a label on a can of frosting. The height of the jar is 5 inches and the radius is 1.5 inches I did SA=2TTrh+2TTr^2 SA=2TT1.5(5)+2TT1.5^2 SA=15TT + 2TT2.25 SA=15TT=4.5TT SA=19.5TT SA=61.261 SA=61.3in^2 61.3in squared of paper was

    asked by Scott- Ms Sue can you help
  259. math ALG 2!

    Write the following value in scientific notation. 7,400,000 7.4x10^3? help?

    asked by ty
  260. Maths lit

    In your own words,explain what information is communicated in graph 1

    asked by Zukiswa
  261. Ashford

    Often, after graduation, students report that they can barely remember some of the concepts they studied in school. This is particularly true if a difficult concept is introduced. As asymptotic notation is perhaps one of the most difficult concepts to

    asked by Sarah
  262. Maths

    Ray and Roxanne leave from the same spot for their morning run. Roxanne runs due North at 8 km/h while Ray runs due East at 11 km/h. Find the distance and bearing of Roxanne from Ray after 20 minutes. Round your answers to one decimal place.

    asked by Caroline
  263. Physics

    Okay so i'm having a little trouble explaining the answer to a phys lab question concerning rolling friction: Assuming that f = µN , show that the coefficient of (rolling) friction for the car moving down the inclined plane with a constant speed is given

    asked by dallas
  264. English

    6.Through the odds were greatly against them the brave defenders of the fort waged a (valiant scant) battle against the enemy's troops valiant 7.Because her condition was so poor after the operation she was placed in the hospital's (Stealthy intensive)

    asked by Jerald
  265. Spanish

    Hi there, how would I say the following phrase in Spanish: Mexico, it was beautiful. Next stop Italy.

    asked by David
  266. Maths

    P, Q and R are three towns. Q is 40 km N 72°E of P and R is 48 km S 55° E of P. Find the distance and bearing from Q to R. Round the distance to the nearest 0.1 km and the bearing to the nearest minute.

    asked by Brooks
  267. physics

    a converging lens has a focal length of 15cm. Find two positions where a real object can produce images four times its size.

    asked by Anonymous
  268. math ALG 2!

    Write the following value in scientific notation. 0.00003165 i don't understand?

    asked by ty
  269. maths-

    Number of points at which f(x) = 3+2sinx has maximium in the interval (-11 pie/2 , 100 pie) is _____

    asked by anoynomous
  270. social studies

    How many regions does the United States have?

    asked by mateo
  271. Life orientation

    Discuss five ways in which hiv and aids impacts on the community

    asked by Anonymous
  272. math ALG 2!

    Write the following value in standard notation. 4.25 x 106

    asked by ty
  273. Statistics

    What is the 75th percentile of the adhesion distribution? A locomotive's 'adhesion' is the locomotive's pulling force as a multiple of its weight. A diesel locomotive model has adhesion which varies in actual use according to a Normal distribution with a

    asked by Anonymous
  274. ALGebra

    We define n♡ recursively as follows. 1♡=1; n♡=((n−1)♡)⋅n+1 Find the largest n

    asked by please..anyone help!!
  275. math ALG 2!

    Write the following value in standard notation. 3.89 x 104

    asked by ty
  276. Government

    I am supposed to come up with a bill for an interest group of our choosing. I chose the American Bar Association. The bill i want to propose is " to give lawyers and law students with disabilities an equal chance at being chosen as a lawyer to be able to

    asked by Anonymous
  277. LIFE ORIENTATION

    10 WAYS IN WHICH THE ENVIRONMENT HEALTH HAZARD CAN IMPACT NEGATIVELY ON ONE'S HEALTH

    asked by VICTOR
  278. Combinatorics

    Bob is at an amusement park with 10 different rides. He only has time to go on 3 rides, before he needs to head back for his curfew. If he only wants to go on each ride a maximum of one time, how many different ways are there to go on 3 rides?

    asked by Bob
  279. Ashford

    This week you will analyze the computational complexity of the game you select. A good way to do this is to determine the steps of the game in the algorithm format from Week 4 and figure out how many steps it could take at maximum to finish the game.

    asked by Sarah
  280. math ALG 2!

    Write the following value in standard notation. 3.14 x 10-5

    asked by ty
  281. Ecology

    The effect of humans on the environment is more drastic than that of other species because people have a greater ability to 1. adapt to seasonal changes. 2. learn new skills. 3. alter the environment. 4. eat different types of food.

    asked by Elena
  282. English

    A discussion board in an online course can be another form of: A. communication. B. assessment. C. objective test. D. free expression. is it A Explain, discuss, analyze, state, and evaluate are examples of __________ words in an essay-type exam. A. key. B.

    asked by Amy
  283. Science

    My science fair project is growing bacteria from food that is left out and seeing how much the bacteria increases over time. How would I write my hypothesis?

    asked by Abby
  284. math ALG 2!

    Write the following value in standard notation. 2 x 10-6

    asked by ty
  285. calculus

    This is the question: "A new fruit juice (like a Popper) is to be marketed in a new container in the shape of a rectangular prism. The cardboard container is to have a square base and is to contain 300 mL of juice. What should be the dimensions of the

    asked by Jamal
  286. Math

    -17 + n/ -3=9 I don't understand this. Please help

    asked by Cherie
  287. maths-probabilty(URGENTLYYY)

    There are two bags out of which Bag 1 contains 2 white and 3 red balls and bag 2 contains 4 white and 5 red balls. 1 ball is drawn at random from one of the bags and is found to be red. Find the probability that it was drawn from bag 2

    asked by anoynomous
  288. math

    Consider the region in Quadrant 1 totally bounded by the 4 lines: x = 3, x = 9, y = 0, and y = mx (where m is positive). Determine the value of c such that the vertical line x = c bisects the area of that totally bounded region. Needless to say, your first

    asked by borat
  289. Trigonometry

    If 180

    asked by Joseph79
  290. 12Chemistry

    What professions would use chemical bonding?

    asked by Anonymous
  291. Trig

    If 180

    asked by Joseph79
  292. Childhood

    Two most common aspects of malnutrition in the u.s are: a) heart disease and obesity b) iron deficiency and heart disease c) dental decay and iron deficiency d) obesity and dental decay. I chose c) dental and iron deficiency is that right?

    asked by Sara
  293. Exceptional children

    Can you check my answers please Adaptive behaviors are a.) the same as fuctional skills b.) different from functional skills c.) exclude functional skills or d.) include functional skills. this is tricky for me but i'm guessing d.) include funtional

    asked by Nancy
  294. Childhood

    The fundamental purpose of early childhood education should be to a) prepare children for continuing later success in elementary school. B) foster growth of developmental sequences c) foster competence in dealing with life .is letter c) correct?

    asked by Sara
  295. Physics

    How can we find the resultant force if the mass and SPEED are given?? Give me the formula please!!

    asked by Emily
  296. chemistry

    Which material would you expect to have a greater bandgap energy between indium nitride (InN) and indium phosphide (InP)?

    asked by Chemq
  297. Chemistry

    Chemical analysis of a germanium crystal reveals indium at a level of 0.0003091 atomic percent. Assuming that the concentration of thermally excited charge carriers from the Ge matrix is negligible, what is the density of free charge carriers (free

    asked by Chemq
  298. algebra

    If $6,000 is placed in an account with an annual interest rate of 3%, how long will it take the amount to triple if the interest is compounded annually?

    asked by alana
  299. Math

    Find the sum of all 3-digit positive numbers N that satisfy the condition that the digit sum of N is 3 times the digit sum of N+3.

    asked by Hale
  300. Heat Energy

    1. (a) 500g of copper is heated from 30 degree celcius - 120 degree celcius?. (b) if the same quantity of heat is supplied to 300g of water initial at 30 degree celcius,what will be the final temperature.

    asked by Precious
  301. 1 question, really urgent

    if its 12:30pm in vancouver what time is it in Goose Bay labrador

    asked by Polly
  302. booker washington

    The lawyer suggested that you and __________ work to find an agreement outside the courtroom, for the trial would be long and unpleasant

    asked by dories
  303. Physics

    What is simple pendulum?

    asked by Ajay pratap
  304. Physics

    A pendulum is released from some height. When it reaches the bottom of its swing, its speed is 2.5 m/s. What is the initial height of the pendulum?

    asked by Wilson
  305. physics

    find the expression for the acceleration of a cylinder rolling down without slipping on a rough inclined plane also obtained an expression for coefficient of friction

    asked by shashi ranjan
  306. physics

    compare the relation of fundamental frequencies for a pipe closed at one end and for a pipe open at both ends

    asked by shashi ranjan
  307. Physics

    A 4 kg weight falls on a spring that is facing up. The weight compresses the spring 0.25m. If the spring constant of the spring is 3.5N/m, how high was the weight when it was dropped?

    asked by Wilson
  308. CHEMISTRY

    NEED HELP (Combined gas Law) A gas at a pressure of 1.50 atm has a volume of 200 mL. Calculate the new volume if the pressue changes to 1.20 atm. Assume constant temperature.

    asked by JOY
  309. Heat Energy

    A container holds 3kg of water at 25 degree celcius. If 0.5kg of iron at 80 degree celcius is added to the water in the contain. What is the? (i) final temperature of the container. (ii) Quantity of heat gained by water

    asked by Precious
  310. math

    (1.0425) exponent 12

    asked by Thomas
  311. Physics

    A 3.4 kg mass is shot by a sling shot with an initial velocity of 4.5 m/s. When the mass is in the air at a height of 50m, it is still traveling upwards. What is its velocity at that height? Draw energy pie graphs for the initial and final state. (Hint:

    asked by Wilson
  312. Physics

    A 0.9 kg block is moving with speed 7 m/s towards a spring that has a spring constant of 1.3 N/m. The block hits the spring and compresses it. a) How far did the block compress the spring?(draw a pie graph also) b) When the block is still moving and the

    asked by Wilson
  313. math

    what is the speed of a runner who can run 400 metre in 76 seconds

    asked by charles
  314. maths- probabilty(me posted third time)plse answer

    There are two bags out of which Bag 1 contains 2 white and 3 red balls and bag 2 contains 4 white and 5 red balls. 1 ball is drawn at random from one of the bags and is found to be red. Find the probability that it was drawn from bag 2

    asked by anoynomous
  315. math(statistics)

    1. Assume that x is a binomial variable with an expected value of 3 and variance of 2.4 .find (a) P(x=0) (b) P(x=12) THnxs

    asked by Robert
  316. Socials please check my answers

    pleaes chack my answers: what are the horizontal lines on a map called? my answer= latitudes what are the vertical lines on a map called my answer= longitudes

    asked by Alex
  317. Physics

    Okay so i'm having a little trouble explaining the answer to a phys lab question concerning rolling friction: Assuming that f = µN , show that the coefficient of (rolling) friction for the car moving down the inclined plane with a constant speed is given

    asked by dallas
  318. Calc

    The function f is defined by f(x)= (25-x^2)^(1/2) for -5 less than or = x less than or = 5 A) find f'(x) B) write an equation for the tangent to the graph of f at x=3 C) let g be the function defined by g(x)= (f(x) for -5

    asked by Aparna
  319. Finance

    you have contacted a number of dearlerships to determine the best interest rate on a new car loan, dealship quoted a 5 year, 10% loan in the amount of $35,000 that will require monthly payments. What is the monthly loan payment. And what will the loan

    asked by Miller
  320. Finance

    you have contacted a number of dearlerships to determine the best interest rate on a new car loan, dealship quoted a 5 year, 10% loan in the amount of $35,000 that will require monthly payments. What is the monthly loan payment. And what will the loan

    asked by Miller
  321. Math

    Find the HCF 1) 7x and 9 : nothing 2) x^2(x-4) and x(x-4) : its (x-4)? 3) 6b and 2b^3 : 2b ,? 4) 6(x-1)^2 and 16(x-7)(x-1) : x-1 , 5) 18y,27y, 9xy^2 : 9y 6) 5a^2 and 25a : 5a 7) 6abc, 8ab, 12bc : 2b 8) 9a^2b and 18ab^2 : 9ab

    asked by Mary
  322. arithmetic

    The measure of two angles of a triangle are 35* and 45*. What is the measure of the third angle of the triangle? A. 95* B. 100* C. 105 D. 110*

    asked by Peltier
  323. Lang. Arts

    It comes with padded shoes that soften the landing. A.noun clause B.adverbial clause C.misplaced modifier D.adjectival clause I think it is D...?

    asked by Cassie
  324. socials please check

    how many time zones are there in canada? My options are: a.) 5 b.) 10 c.) 7 though i tried answering this and i got 6? what is the correct answer

    asked by Alex
  325. 4th grade math

    bryan bought a car that is 14 feet long, how many inches is this?

    asked by Lourane
  326. English

    If I were to interview the curling team captain, what types of questions would I ask?

    asked by Anonymous
  327. Olefile Life Orientation

    What,according to the basic conditions of employment Act applie with eager to learn

    asked by Nthabiseng
  328. Math

    Explain in 2-3 complete sentences how using function tables can be useful in real life.

    asked by ISABELLA
  329. Physics - Heat and phase change

    8.94 kJ of energy is available to melt 20 g of ice (initially at 0*C) and subsequently to warm the water. What is the water's final temperature in degrees Celsius?

    asked by Jos
  330. Statistics and Probability

    Why is a normal distribution called "normal"?

    asked by Betty
  331. Trig

    What is the exact value of tan(s+t) if sin(s+t)=56/65. And cos(s)=5/13 and sin(t)=4/5. Everything is in the first quadrant

    asked by Heather
  332. Physics - Heat and phase change

    9.4 kJ of energy is available to take a sample of ice initially at -40*C, heat it to it's melting point, melt it, and subsequently heat it to 50*C. What is the mass, in grams, of the largest such sample for which this amount of energy will suffice?

    asked by Jos
  333. math

    25 independent, fair coins are tossed in a row. What is the expected number of consecutive HH pairs? Details and assumptions If 6 coin tosses in a row give HHTHHH, the number of consecutive HH pairs is 3.

    asked by stranger
  334. education

    sand, rocking chairs, animals, and strap swings are examoles of a__ environment. a) static b) soft c) creative d) hard. would the answer be d) hard

    asked by sahar
  335. Art

    Describe how elements of art and principles of design work together to form a composition

    asked by Jackie
  336. Math

    What expression is equivalent to 16+ 56

    asked by Elise
  337. Sciemce

    How many mole of ammonium nitrate would be consumed if 15 mole of water were produced?

    asked by Hayden
  338. Math

    If I have several boards that I cut 3/5 off each one and end up with 4 boards of equal length, how many boards did I start off with?

    asked by Jalon
  339. Statistics and Probability

    Why is a normal distribution called "normal"?

    asked by Betty
  340. Statistics

    The controller for a garage door opener has nine binary switches that can be set to either on or off. How many different total settings can be set on this controller?

    asked by Abby
  341. math

    k(4/7 + 1/7) + j =

    asked by Jim
  342. pathology

    how does chronic bronchitis lead to emphysema and how the cor pulmonale is developed?? i have gone through couple of websites but couldn't find clear answer if someone can please explain a bit, thanks! waiting for answers

    asked by yao
  343. Algebra business

    Diane contributes $625 at the end of each month to retirement fund. For the past 10 years this fund has earned 3.84% a year. Compounded monthly, assuming the 3.84% rates continue, how much will she have in her retirement account after 15 years?

    asked by Najee