Questions Asked on
October 22, 2012

  1. CALC 251

    Let f(x)= [5x^(1/4)]*(x^3-8) Evaluate at f'(x).

    asked by J
  2. Chemistry 9

    a) A 2.56 balloon contains 3.66 g of gas. Find the density b) A 45.3 g sample placed in a graduated cylinder causes the water level to rise from 25.0 mL to 41.8 mL . Find the density

    asked by Seastone
  3. CALC 251

    Suppose that f(x)= (e^x)/(x^2+16. Find f'(0).

    asked by J
  4. Physics

    the input and output of hydraulic jack are respectively 1 cm and 4 cm in diameter. A lever with a mechanical advantage of 6 is used to apply force to the input piston. How much mass can the jack lift if a force of 180 N is applied to the lever and

    asked by Owen
  5. chemistry

    Will a fluoride concentration of 1.0 mg/L be soluble in a water containing 200 mg/L of calcium? I got Qsp 1.38 * 10^-8 and Ksp = 3.45*10^-11 does that seem right? and does this mean fluride concentration will be soluble in water containing calcium?

    asked by John
  6. south piedmont

    convert to a mixed number 89/6

    asked by tame mccormick
  7. statistics

    According to American Airlines, Flight 215 from Orlando to Los Angeles is on time 90% of the time. Suppose 150 flights are randomly selected. Find the probability that few than 125 flights are on time.

    asked by sharon
  8. science

    at what age does brain stops developing

    asked by nischal
  9. physics

    A chair of weight 100N lies atop a horizontal floor; the floor is not frictionless. You push on the chair with a force of F = 43.0N directed at an angle of 35.0^\circ below the horizontal and the chair slides along the floor. Using Newton's laws, calculate

    asked by souleymane
  10. physics

    A particle of mass 0.350 kg is attached to the 100-cm mark of a meter stick of mass 0.175 kg. The meter stick rotates on a frictionless, horizontal table with an angular speed of 6.00 rad/s. (a) Calculate the angular momentum of the system when the stick

    asked by Karrine
  11. algebra

    a barrel contains 163 gallons of water and is being drained at a constant rate of gallons per hour write an equation that models the number of gallons g after t hours

    asked by tina
  12. physics

    A chair of weight 100N lies atop a horizontal floor; the floor is not frictionless. You push on the chair with a force of F = 43.0N directed at an angle of 35.0^\circ below the horizontal and the chair slides along the floor. Using Newton's laws, calculate

    asked by souleymane
  13. math

    A box contains 55 balls numbered from 1 to 55. If 15 balls are drawn with replacement, what is the probability that at least two of them have the same number?

    asked by Anonymous
  14. Math

    Solve using Augmented Matrix Methods -4(x1) + 6(x2) = -8 6(x1) - 9(x2) = 12

    asked by Christopher
  15. College chemistry

    When your body metabolizes amino acids, one of the final end products is urea, a water so liable compound that is removed from the body as urine. Why is urea soluble in water, when hexamide, a related compound is not?

    asked by Leslie
  16. College chemistry

    When your body metabolizes amino acids, one of the final end products is urea, a water so liable compound that is removed from the body as urine. Why is urea soluble in water, when hexamide, a related compound is not?

    asked by Leslie
  17. math

    Morgan Company received from Lee Company an invoice dated September 27. Terms were 2-10 EOM. List price on the invoice was $5000.00(freight not included). Morgan receives a 9/7 chain discount. Freight charges are Morgans resposibility but Lee agreed to

    asked by natasha
  18. mba

    the price p per unit at which a company can sell all that it produces is given by the function p(x) = 300-4x. the costs function is c(x) = 500+28x where x is the number of units produced. find x so that the profit is maximum

    asked by viji
  19. Physics

    Why is it necessary to collimate the light source before using the prism to disperse the light? A. If white light enters the prism with different angles, some of the blue light will exit the prism with the same angle as the orange light. B. If white light

    asked by Kyle
  20. game theory

    What is the relationship between the maximin payoff and the set of NE payoffs in a finite game?

    asked by Olga
  21. MATHS

    how much money would you have after 20 weeks if you were given 5c the first week, 10c the second, 20c the third, 40c the fourth, and so on?

    asked by chelsea
  22. PHYSICAL SCIENCE

    How do the pressure variation with depth affect our ability to explore the ocean?

    asked by SHEILA
  23. physics

    Your projectile launching system is partially jammed. It can only launch objects with an initial vertical velocity of 42.0 m/s, though the horizontal component of the velocity can vary. You need your projectile to land 214 m from its launch point. What

    asked by Lopez
  24. Math

    Find all solutions of the equation (sec(x))^2−2=0 The answer is A+Bk where k is any integer and 0

    asked by Melissa
  25. geometry

    The volume of a sphere is 4,000 m3. What is the surface area of the sphere to the nearest square meter?

    asked by Anonymous
  26. Social Studies

    What national interests lead to ultranationalism?

    asked by Francis
  27. English

    I need a paragraph of 50sentences?

    asked by Ravifa
  28. Social Studies

    Which underlying circumstances occurring during the interwar period of 1919 to 1939 may have influenced whether or not nationalist interest was nationalist or ultranationalist?

    asked by Francis
  29. Social Studies

    List the unique circumstances of the interwar period that may have led to ultranationalism.

    asked by Francis
  30. Algebra

    2 cyclists travel opposite on circular trail that is 5 miles long. one cyclist travels 12 miles per hour, the other travels 18 miles per hour. How long before they meet?

    asked by Anonymous
  31. chem

    a new compound composed of just Hex-Nuts and bolts is formed.A 13.7 Kg sample of the new compound is separated into its component elements with the following result 3.84 kg. of hex-nuts and 9.90 kg of bolts. 1. How many hex-nuts are present in the 13.7 kg

    asked by Amanda
  32. Calc

    Find all solutions of the equation (sec(x))^2−2=0 The answer is A+Bk where k is any integer and 0

    asked by Melissa
  33. physics

    A 16.0 g bullet is fired horizontally into a 87 g wooden block that is initially at rest on a frictionless horizontal surface and connected to a spring having spring constant 168 N/m. The bullet becomes embedded in the block. The bullet block system

    asked by Anonymous
  34. physics

    A 81.0 kg soccer player jumps vertically upwards and heads the 0.45 kg ball as it is descending vertically with a speed of 28.0 m/s. If the player was moving upward with a speed of 4.40 m/s just before impact. (a) What will be the speed of the ball

    asked by Anonymous
  35. physics

    A man claims he can safely hold on to a 14.20 kg child in a head-on collision with a relative speed of 132. mi/h lasting for 0.100 s as long as he has his seat belt on. (a) Find the magnitude of the average force needed to hold onto the child

    asked by Anonymous
  36. physics

    A 48.2 kg girl is standing on a 160. kg plank. The plank, originally at rest, is free to slide on a frozen lake, which is a flat, frictionless surface. The girl begins to walk along the plank at a constant velocity of 2.00 m/s to the right relative to the

    asked by Anonymous
  37. Physics

    :'( Please help me....? (7 points) 2. Contrast the metric units of distance, time, and speed. Describe the relationship between them. Answer: (11 points) 3. A microbiologist measures the speed of a swimming bacterium. The bacterium covers a distance of

    asked by Gabriella
  38. maths urgent please

    a particle moves in a straight line such that its position x from a fixed point 0 at time 't' is given by x= 5 + 8sin2t + 6cos2t 1. Find the period and amplitude of the particle. 2. Find the greatest speed of the particle. Could you please explain the

    asked by Candice
  39. Math

    How do you find the percentage of a number? I have no clue how you do that. An example I have is 850 students are attending a camp, 38% of them play musical instruments. What number of people play instruments? I don't get how to solve that and here's

    asked by Jessie
  40. MATH

    HELP? Exam in 20 mins -dont' have any idea how to do this question; please helpp.. anyone! PLEAZE A.S.A.P. minimize p= 15x +18y subject to x+2y= 36 x>=0 y>=0

    asked by GARNEL
  41. Calculus

    Find the inflection points of f(x)=8x^4+46x^3-18x^2+1. (Give your answers as a comma separated list, e.g., 3,-2.) Please Help!!!!!

    asked by Mike
  42. maths

    BEGGING FOR HELP!!! EXAM IN 20 MINS LOST ON HOW TO DO THIS Q. Company has $ 20 million dollars for two types insurance. Insurance A-homeowners have a 10% annual return. Insurance B-Auto has a 12% annual return. The total amount of Homeowners Loans should

    asked by GARNEL
  43. calculus

    compute the maximum profit for the profit function P(x)= x^3/3-9/2x^2+8x

    asked by dino
  44. lens surface

    - a spherical generator is used to produce a -15.00D surface on glass of refractive index 1.80. The diameter of the cutting tool is 80mm and the radius of the cutting surface is 4 mm. What is the angle between the axis of the tool and the axis of the lens?

    asked by Anonymous
  45. math

    Write a number sentence for the model. Let one white tile equal +1 and one black tile equal –1. A. –14 – (–6) = –8 B. 14 – 6 = 8 C. –14 – 6 = –8 D. –14 – (–6) = 8 i put d but it was rong

    asked by chris
  46. algebra 1

    top and bottom margins are 7/8 inch there are 5 rows of pictures with 3/16 inch between the vertical what would be the height of each picture

    asked by jane
  47. Algebra

    Quick question. The sum of two numbers is 48. One number is 3 times as large as the other. What are the numbers?

    asked by MorganV
  48. geometry

    A square pyramid has base edges 10 in. long and a height of 4 in. Sketch the pyramid and find its surface area. Round your answer to the nearest tenth

    asked by Anonymous
  49. phys!!! how do you do this

    Just after opening a parachute of negligible mass, a parachutist of mass 85.5 kg experiences an instantaneous upward acceleration of 1.12 m/s2. Find the force of the air on the parachute.

    asked by anthony
  50. accounting

    Okay so I need help Identifying the reporting issues in this case with references to the conceptual framework pyramid, such as revenue recognition, full disclosure, historical cost, etc. So this gym offers one year memberships. Members can use any of the

    asked by Andy
  51. physics

    Just after opening a parachute of negligible mass, a parachutist of mass 85.5 kg experiences an instantaneous upward acceleration of 1.12 m/s2. Find the force of the air on the parachute.

    asked by anthony
  52. voltage drop

    12v r1=10 r2=15 r3=2 r3=18 how would one solve this

    asked by J
  53. Chemistry

    lime, Ca(OH)2 can be used to neutralize an acid spill.A 5.06-g sample of Ca(OH)reacts with excess of hydrochloric acid:6.74 g of calcium chloride is collected what is the percent yield of this experiment Ca(OH)2 + 2HCI ====> CaCl2 + 2H2O

    asked by Dimitri
  54. geometry

    The volume of 2 similar solids are 27 ft3 and 216 ft3. The surface area of the larger solid is 300 ft2. What is the surface area of the smaller solid? Round your answer to the nearest tenths place

    asked by Anonymous
  55. Maths

    Question: I graphed -2x+y=-6 Y=-(1/3)x+1 & w/ the options No Solution, Infinante Solutions, or ( , ) I found the answer is (3,1) am I correct? What would be a better way to double check my answers?

    asked by ArthurK
  56. calculus

    A health club offers memberships at the rate of $300, provided that at least 50 people join. For each member in excess of 50, the membership fee will be reduced by $2 for all members. Due to space limitations, at most 125 memberships will be sold. How many

    asked by dino
  57. Finite Math

    A polygraph machine correctly identifies a lie 81% of the time, and incorrectly identifies a true statement as a lie 8% of the time. If a person being examined with the machine lies 10% of the time, what is the probability that a statement identified by

    asked by Anonymous
  58. Finite Math

    A fair coin is flipped. If the flip results in a head, then a marble is selected from an urn containing 1 red, 4 white, and 9 blue marbles. If the flip results in a tail then a marble is selected from an urn containing 3 red and 3 white marbles. If the

    asked by Anonymous
  59. Algebra

    A petroleum company has two different sources of crude oil. The first source provides crude oil that is 35% hydrocarbons, and the second one provides crude oil that is 60% hydrocarbons. In order to obtain 120 gallons of crude oil that is 55% hydrocarbons,

    asked by Matthew
  60. physics help

    Just after opening a parachute of negligible mass, a parachutist of mass 85.5 kg experiences an instantaneous upward acceleration of 1.12 m/s2. Find the force of the air on the parachute.

    asked by anthony
  61. physics

    Two artifacts in a museum display are hung from vertical walls by very light wires, as shown in the figure.Find the tension in the horizontal wire ifw=158Nandm=30.0 kg.

    asked by Anonymous
  62. MATH - ALGEBRA

    Classify as Monomial, Binomial or Trinomial 8X2-3/5 X+35 Please help.

    asked by DAVID
  63. Geometry

    The angle of elevation of a ladder leaning against a wall is 45°. If the distance from the base of the ladder to the wall is 15 feet, find the length of the ladder.

    asked by Patrick
  64. Grammar

    Select the correctly punctuated sentence. A) The implant was ruptured, it was removed, the capsule was irrigated. B) The implant was ruptured it was removed, the capsule was irrigated. C) The implant was ruptured, it was removed the capsule was irrigated.

    asked by Marie
  65. algabra

    why are prime numbers beter when writing codes?

    asked by brandy
  66. Abnormal Psychology

    In comparison to children with autism, children with schizophrenia A. tend to be younger at diagnosis. B. show a more chronic and declining course. C. show similar social and language deficits. D. show less intellectual impairment. I think its C or D but

    asked by Felicia
  67. Calc

    Set the first derivative and second derivative of x^2/x-2 equal to 0. Solve for 0.

    asked by Anonymous
  68. Phys Please Help!!

    Just after opening a parachute of negligible mass, a parachutist of mass 85.5 kg experiences an instantaneous upward acceleration of 1.12 m/s2. Find the force of the air on the parachute.

    asked by anthony
  69. Calculus

    simplify log2(4x^2 2^x)

    asked by Jake
  70. Calculus (math)

    Write a formula for f^-1 (x) if f(x) = (x+5)/(3x-4) and state the domain of f-1

    asked by Karly
  71. Math

    Eliminate the parameter in the pair of parametric equations to find the corresponding rectangular question. x=h+ asecQ y=k+ tanQ

    asked by Soren
  72. chemistry

    Is this equation correctly balanced? If not why. Al2S3+H2O----> Al2S3+3H2O---->Al2(SO)3+3H2

    asked by What?
  73. Calculus

    The population (in thousands) of the Tzitzit bird is well described by a function of the form P(t) = ae^kt, where t is the time in years and a and k are constants. If the population was 10 thousand when t-0 and 300 thousand when t=3, determine the

    asked by Billy
  74. english2

    Bee balm, coneflowers, and black-eyed Susans, brightly colored flowers with darker bulbous centers, contrast beautifully when planted together. is it correct

    asked by juan
  75. Physical Science

    How much heat is absorbed by pouring 10 grams of 100°C liquid water on a student’s hand. The water is cooled to body temperature, 37°C. Assume that all of the heat is absorbed by the hand

    asked by Kayden
  76. Punctuation

    Select the correctly punctuated sentence. A) No, I do not agree with that diagnosis. B) No I do not agree with that diagnosis. C) No I do not agree, with that diagnosis. My answer is A

    asked by Marie
  77. calculus

    Left f(x) = 1/x+2 and g(x) = x-1/x. Simplify as much as possible and sstate the domain. f 0 g(x) g 0 f(x)

    asked by Deron
  78. Calculus

    Im finding local Min and max of x^2/x-2 I know I take the derivative of the first one but how do i derive this one. And the second one especially don't know how to do.

    asked by Ally
  79. Physics

    An elastic collision occurs between two pucks on an air-hockey table. Puck A has a mass of 0.025 kg and is moving along the x axis with a velocity of +5.5 m/s. It makes a collision with puck B, which has a mass of 0.060 kg and is initially at rest. The

    asked by Sam
  80. Punctuation

    Select the correctly punctuated sentence. A) It was an exhausting complicated surgery. B) It was an exhausting, complicated surgery. C) It was an exhausting, complicated surgery My answer is B

    asked by Marie
  81. Punctuation

    Select the two (2) correctly punctuated sentences. A) I also explained antepartum fetal surveillance, i.e., fetal heart rate monitoring and assessment of amniotic fluid volume. B) I also explained antepartum fetal surveillance, i.e. fetal heart rate

    asked by Marie
  82. Punctuation

    Select the correctly punctuated sentence. A) His greatest fears were a stroke, a heart attack, and blindness. B) His greatest fears were a stroke a heart attack and blindness. C) His greatest fears were a stroke, a heart attack, and blindness I answered A

    asked by Marie
  83. physics

    When a 0.116 kg mass is suspended at rest from a certain spring, the spring stretches 3.50 cm. Find the instantaneous acceleration of the mass when it is raised 5.70 cm, compressing the spring 2.20 cm

    asked by justin
  84. Math

    Cutting a circle into equal sections of a small central angle to find the area of a circle by using the formula A=pi*r*r

    asked by Shubhi
  85. math

    air fare club offers membership at $300.00, at least 50 people must join.For every member over 50 their fare will be reduced by $2 for every member. Due to space limits only 125 passengers will be allowed. how many memberships will maximize the revenue?

    asked by dino
  86. Punctuation

    Select the correctly punctuated sentence. A) Depression, often a genetic disorder, can be safely treated with medication. B) Depression, often a genetic disorder can be safely treated with medication. C) Depression often a genetic disorder can be safely

    asked by Marie
  87. Abnormal Psychology

    In the “strange situation” attachment assessment technique, children with Down syndrome A. display significant distress upon separation. B. readily reach to strangers for comfort. C. show few distress signals despite an apparent need for contact with

    asked by Felicia
  88. Physics

    A dentist causes the bit of a high-speed drill to accelerate from an angular speed of 1.20 104 rad/s to an angular speed of 3.14 104 rad/s. In the process, the bit turns through 1.92 104 rad. Assuming a constant angular acceleration, how long would it take

    asked by Sam
  89. Chemistry

    The rate constant for a certain reaction is k=8.90×10^−3 s^-1. If the initial reactant concentration was 0.400M, what will the concentration be after 13.0 minutes?

    asked by Tasnim
  90. Punctuation

    _____ are primarily used to separate sentences. A) commas B) periods My answer is B

    asked by Marie
  91. Physics

    A simple pendulum consists of a light rod of length L = 0.9 m anchored at a fixed point (like the ceiling), and a small mass m = 0.5 kg attached to the free end.  The configuration is moved to an angle θ = 39 degrees from the vertical and released from

    asked by Alphonse
  92. Physics

    A massless string connects three blocks as shown below. A force of 24 N acts on the system. What is the acceleration of the blocks and the tension in the rope attached to the 2 kg block?

    asked by Julian
  93. science

    you are sledding on a snow-covered hill at a speed of 6 m/s there is a drop that increases your speed to 12 m/s in 4 s. find your acceleration? i need help answer?

    asked by dem
  94. math

    33x650x-43

    asked by pedro
  95. algebra

    can anyone please help me set this problem up, I can do the math but I have tried for hours... Air fare club offers membership at $300.00, at least 50 people must join.For every member over 50 their fare will be reduced by $2 for every member. Due to space

    asked by dino
  96. Ratios of Similar Figures

    1. Write the following ratio in simplest form: 32 min : 36 min a. 8 : 9 b. 8 : 36 c. 32 :9 d. 128 : 144 2. In a sports equipment locker, there are 81 balls and 45 baseball mitts. Write the ratio of balls to baseball mitts in simplest form. a. 9 : 5 b. 10 :

    asked by Jman
  97. math/algebra

    How do I find the quotient of 5/22 & 6/11?

    asked by Kathy
  98. physics

    When a 0.116 kg mass is suspended at rest from a certain spring, the spring stretches 3.50 cm. Find the instantaneous acceleration of the mass when it is raised 5.70 cm, compressing the spring 2.20 cm

    asked by justin
  99. physics

    When a 0.116 kg mass is suspended at rest from a certain spring, the spring stretches 3.50 cm. Find the instantaneous acceleration of the mass when it is raised 5.70 cm, compressing the spring 2.20 cm

    asked by justin
  100. Science

    How much heat must be removed from 500 grams of water at 0°C to form ice at 0°C?

    asked by Michael
  101. mathe

    aufgabe 1.rechne für die folgenden massstäbe aus,welche Länge fünf zentimeter auf der wirklichkeit haben. massstab 1--1000000-- massstab 1--40000000,massstab1--50000--massstab--10000-- massstab 1--500000

    asked by priyanka
  102. Science Help!

    How much heat is needed to cause the following irreversible reaction? 200 g of liquid H2O at 50°C is heated to form 200 g of steam at 120°C

    asked by LeAnna
  103. chemistry

    How many grams of solid potassium hydroxide are needed to exactly neutralize 10.8 mL of a 1.25 M hydrobromic acid solution

    asked by Kaitlin
  104. physics

    A car moving 30m/s slows uniformly to a speed of 10 m/s in a time of 5 sec determine 1) the acceleration of the car 2) the distance it moved in 3 sec

    asked by Equality
  105. Chemistry

    What volume of a 0.332 M hydrobromic acid solution is required to neutralize 29.6 mL of a 0.155 M calcium hydroxide solution ?

    asked by Kaitlin
  106. Punctuation and period

    The most commonly used mark of punctuation is the _____ A) comma B) period I answered B

    asked by Marie
  107. Punctuation and period

    Commas are used to set off _____ phrases. A) essential B) nonessential I answered nonessentials

    asked by Marie
  108. physics

    A car moving 30m/s slows uniformly to a speed of 10 m/s in a time of 5 sec determine 1) the acceleration of the car 2) the distance it moved in 3 sec

    asked by Equality
  109. Punctuation

    Select the correctly punctuated sentence. A) Dr. Christiaan Barnard, who performed the first heart transplant, is a well-known cardiologist. B) Dr. Christiaan Barnard, who performed the first heart transplant. Is a well-known cardiologist. C) Dr.

    asked by Marie
  110. calculus

    What is the degree 5 coefficient of the polynomial p(x)= x^2 (x+1) (x+3x^3 + 4x^4)?

    asked by Jerry
  111. Punctuation

    Select the correctly punctuated letter closing. A) Very sincerely yours, Joseph Blow, President B) Very sincerely yours, Joseph Blow President C) Very sincerely yours Joseph Blow, President I answered A

    asked by Marie
  112. Physics

    How many calories will take to convert 5 grams of 90C degree water to 0 C degree?

    asked by Cesar
  113. cis210

    Assignment 1: Inventory Management Systems Due Week 2 and worth 100 points Your sister owns a small clothing store. During a conversation at a family dinner, she mentions her frustration with having to manually track and reorder high demand items. She

    asked by chea
  114. Physics

    How many calories it take to elevate the temperature of 10 gr of water-from 26C to 50C?

    asked by Martha
  115. Punctuation

    Select the correctly punctuated sentence. A) He arrived at the hospital with a heavily, bleeding gunshot wound. B) He arrived at the hospital with a heavily bleeding, gunshot wound. C) He arrived at the hospital with a heavily bleeding gunshot wound. I

    asked by Marie
  116. Sci 207 wk 2 lab 2

    Which species appear to benefit from increasing fragmentation? Which species are negatively impacted? Based on your knowledge of environmental science, what could explain these observations? Support your answer with specific results from your data and

    asked by Traci Davis
  117. College Algebra

    The concentration C of a certain drug in a patient's bloodstream t minutes after injection is given by C(t)=50t/t^2+25. Determine the time at which the concentration is highest. Round your answer to the nearest tenth of a minute.

    asked by Rene
  118. chemistry 20 MC questions

    1- The equipment needed to carry out a titration is: A) hot plate, pipet, and filter paper B) heat source, test tube, and filter paper C) heat source, pipet, and burette D) erlenmeyer flask, pipet, and burette 2- A student correctly predicted that 10.0 g

    asked by memo
  119. Algebra

    The difference between the digits in a two-digit numeral is 3. The units' digit is twice the tens' digit. Find the nuermal.

    asked by Jane
  120. Calculus

    Find the limits if they exist lim_x->0 x/|x| lim_x->0+ sqr(x+4)

    asked by Nero
  121. science

    A balloon with an initial volume of 2.8L at a temperature of 296K is warmed to 375K . What is its volume at the final temperature? (Assume constant pressure.)

    asked by michelle
  122. math

    Find the second derivative. f(x)=(2x^2+4)^7/2

    asked by Alina
  123. Chemistry

    What is the molar concentration of nitrate ions in a 0.161M magnesium nitrate(aq) solution?

    asked by Amber
  124. Chemistry

    In the theoretical reaction 2 B(aq) + 3 D(aq) ---> E(aq) + 4 F(aq) the concentration of D(aq) is 0.40 mol/L. If 25.0 mL of aqueous B is needed to react completely with 30.0 mL of aqueous D, the concentration of B(aq) is A-0.48 mol/L B) B-0.32 mol/L C)

    asked by mem
  125. math

    what is the prime factorization of 1 bilion using exponents?

    asked by alex
  126. Accounting

    I am given several hypothetical amounts and interest rates and need to find the amount of the rental payments. (Lessee-Lessor Entries; Sales-Type Lease) On January 1, 2011, Palmer Company leased equipment to Woods Corporation. The following information

    asked by Mary
  127. Writing

    I have to do a research paper & I want my topic to be on Pixar's influences on the world. My thesis: Pixar is a positive influence on the world. My supporting evidences - 1) Has helped the animation industry 2) Has helped the film industry 3) Has inspired

    asked by Aimia
  128. Physics

    An elevator accelerates upward at 1.2 m/s2. The acceleration of gravity is 9.8 m/s2 . What is the upward force exerted by the floor of the elevator on a(n) 92 kg passenger? Answer in units of N

    asked by Amelia
  129. Physics

    007 (part 1 of 2) An elevator accelerates upward at 1.2 m/s2. The acceleration of gravity is 9.8 m/s2 . What is the upward force exerted by the floor of the elevator on a(n) 92 kg passenger? Answer in units of N 008 (part 2 of 2) If the same elevator

    asked by Amelia
  130. math

    Suppose f is a linear function such that f(1) = -1 and f(3)=2. Then f(4)=?

    asked by Kiki
  131. Physics

    Compute the angular momentum of the earth arising from the following motions. (a) Earth's orbital motion around the sun. (b) Earth's rotation on its axis.

    asked by Pat
  132. Discrete Math

    A bag contains 4 red, 6 white and 9 green marbles. How many ways can 3 red, 2 white and 1 green marbles be selected? Do you used permutation or combination, give your reasoning.

    asked by Eddie
  133. physics

    A solid sphere of mass 0.604 kg rolls without slipping along a horizontal surface with a translational speed of 5.25 m/s. It comes to an incline that makes an angle of 38 with the horizontal surface. Neglecting energy losses due to friction, (a) what is

    asked by Camille
  134. calculus

    Find the limits lim_x->2 x^3+x lim_x->2 (x^2-4)/(x-2)

    asked by Naomi
  135. Physics

    Two resistors 10 Ω and 5 Ω are connected in parallel across a 15 V battery. What is the potential difference across the 10 Ω resistor? 5 V 10 V 15 V 20 V I would think the answer would be B, or 15V

    asked by Fleur
  136. Physics

    An electric kettle operates at 110V. What is the resistance of the kettle if the power is 1.5kW? 8.1 Ω 1.4 Ω 81 Ω 14 Ω I'm stuck between A and B

    asked by Fleur
  137. Physics

    A 1.08 kg skateboard is coasting along the pavement at a speed of 4.60 m/s when a 1.19 kg cat drops from a tree vertically downward onto the skateboard. What is the speed of the skateboard-cat combination?

    asked by Angela
  138. science

    Is a mineral a crystal?

    asked by J
  139. Physics

    Three resistors having the same resistance value are wired in parallel. How does the equivalent resistance compare to the resistance value of a single resistor? The equivalent resistance is thrice the value of a single resistor. The equivalent resistance

    asked by BoBo
  140. Physics

    An inventive child named Chris wants to reach an apple in a tree without climbing the tree. Sitting in a chair connected to a rope that passes over a frictionless pulley, Chris pulls on the loose end of the rope with such a force that the spring scale

    asked by Amelia
  141. math

    You have accepted a project that includes visiting 10 retail locations. Your hourly rate is $12/hour. After completing the 10 locations you have accumulated the following expenses: 5.75 hours worked on the project, 135 miles traveled (paid from mile 1 at

    asked by nydia
  142. Physics

    An elevator accelerates upward at 1.2 m/s2. The acceleration of gravity is 9.8 m/s2 . What is the upward force exerted by the floor of the elevator on a(n) 92 kg passenger? Answer in units of N

    asked by Jessica
  143. need help

    A picture of width 43.0 cm, weighing 52.0 N, hangs from a nail by means of flexible wire attached to the sides of the picture frame. The midpoint of the wire passes over the nail, which is 2.50 cm higher than the points where the wire is attached to the

    asked by justin
  144. Physics

    007 (part 1 of 2) An elevator accelerates upward at 1.2 m/s2. The acceleration of gravity is 9.8 m/s2 . What is the upward force exerted by the floor of the elevator on a(n) 92 kg passenger? Answer in units of N 008 (part 2 of 2) If the same elevator

    asked by Jessica
  145. physics need help bad

    A picture of width 43.0 cm, weighing 52.0 N, hangs from a nail by means of flexible wire attached to the sides of the picture frame. The midpoint of the wire passes over the nail, which is 2.50 cm higher than the points where the wire is attached to the

    asked by justin
  146. Physics

    2 resistors 3 Ω and 6 Ω are connected in parallel across a 6 V battery. What is the current flow through the 3 Ω resistor? 6 A 3 A 4 A 2 A Both B and D sound possible to me..

    asked by BoBo
  147. Chemistry

    Why is a Gas Chromatography separation more efficient than a fractional distillation? What characteristics must the liquid stationary phase have? describe a method for identifying a compound using GC analysis. If you could answer anyone of these that would

    asked by Garet
  148. Physics

    A current of 60 mA passes through a loudspeaker of resistance 6 Ω. What is the potential difference across the resistance of the loudspeaker? 36.0 V 10.0 V 0.36 V 0.10 V Answer B seems like it would be the obvious answer..

    asked by Jane
  149. Math Calculus 2

    At a certain instant an aircraft flying due east at 240 miles per hour passes directly over a car traveling due southeast at 60 miles per hour on a straight, level road. If the aircraft is flying at an altitude of .5mile, how fast is the distance between

    asked by Steven
  150. physics

    If a rod is moving at a velocity equal to 1/2 the speed of light parallel to its length, what will a stationary observer observe about its length? The length of the rod will become exactly half of its original value. The length of the rod remains the same.

    asked by laurie
  151. physics

    When a 0.116 kg mass is suspended at rest from a certain spring, the spring stretches 3.50 cm. Find the instantaneous acceleration of the mass when it is raised 5.70 cm, compressing the spring 2.20 cm

    asked by justin
  152. Physics

    Which of the following is correct for a step-down transformer? Number of turns in the primary coil is less than the number of turns in the secondary coil. Step-down transformer increases the voltage from low value to high value. Number of turns in the

    asked by Liam
  153. math

    grant's change rack contained $8.80 in quarters, dimes, and nickels. There were two more than five times as many nickels as quarters and four less than twice as many dimes as quarters. How many of each kind of coin was there in the change rack? please help

    asked by k
  154. history 103

    Summarize the major factors that allowed the Incas to conquer and rule their large empire. Some suggest that, in many ways, the Incas were like the Romans or other Pre-Columbian American Civilizations. Evaluate whether they were more similar or different,

    asked by lucille
  155. physics

    wile e coyote pushes a 1500n rock toward the edge of a cliff with the road runner below. he gives a rock acceleration of .8m/s. what is the net force of the rcok?

    asked by Anonymous
  156. history 103

    The voyages of Zheng He reveal a powerful, accomplished, and restored Confucian state and civilization in China that was at least equal to, but very different from, emerging early modern Western civilization. List and describe the major factors that made

    asked by lucille
  157. Physics

    A 5.9 g coin sliding to the right at 27.6 cm/s makes an elastic head-on collision with a 17.7 g coin that is initially at rest. After the collision, the 5.9 g coin moves to the left at 13.8 cm/s. (a) Find the final velocity of the other coin. (b) Find the

    asked by Angela
  158. physics

    wile e coyote pushes a 1500n rock toward the edge of a cliff with the road runner below. he gives a rock acceleration of .8m/s^2. what is the net force of the rcok?

    asked by me
  159. physics

    two kids push on a 10kg box. one pushes 100N to the west and the other pushes north at 200N. what is the acceleration of the pbject?

    asked by me
  160. physics

    a wagon is pulled at a constant speed at an angle of 46 dregress with a force of 100N. ehat is the force of friction between the wagon and the ground ?

    asked by me
  161. physics help i still dont get it

    A picture of width 43.0 cm, weighing 52.0 N, hangs from a nail by means of flexible wire attached to the sides of the picture frame. The midpoint of the wire passes over the nail, which is 2.50 cm higher than the points where the wire is attached to the

    asked by justin
  162. Physics

    An inventive child named Chris wants to reach an apple in a tree without climbing the tree. Sitting in a chair connected to a rope that passes over a frictionless pulley, Chris pulls on the loose end of the rope with such a force that the spring scale

    asked by Courtney
  163. math

    Can these functions be defined for all real numbers? y= e^cos(x) y= ln(sin(x)) y= sqr(cos(x)+2) I'm trying to find some systematic way to test these, but I'm not sure how I can proe it for any possible input.

    asked by Naomi
  164. Physics

    Which doesn't describe motion? mass or position eg. The position of a golf ball standing still on a tee at 7:30 A.M. Sunday morning. or The mass of Voyager as it plunges into a black hole.

    asked by Lewis
  165. Chemistry 20 titration

    1) oi50 . tinypic . com / ejh6vm . jpg The most suitable indicator for the titration is: A)methyl violet B)chlorophenol red C)methyl orange D)phenolphthalein 2-A base is titrated with an acid solution until the indicator changes colour. This change in the

    asked by Rock
  166. math

    Name a number that can be evenly divided by 6 and 7

    asked by Janiya
  167. soicial studys help plz

    1. Who was the French absolute monarch who called himself the "Sun King" to show that he was the center of the French nation? (1 point)Cardinal Richelieu Louis XIII Louis XIV Versailles 2. The Elizabethan Age was considered a golden age due to all of the

    asked by all about me
  168. mathURGENT!!!!

    the midpoints of the sides of a triangle are (1,1),(4,3),and (3,5). find the area of the triangle. what is the answer and can u explain how u got it step by step? please...

    asked by dan
  169. PHYSICS

    When a 0.116 kg mass is suspended at rest from a certain spring, the spring stretches 3.50 cm. Find the instantaneous acceleration of the mass when it is raised 5.70 cm, compressing the spring 2.20 cm.

    asked by Clarissa
  170. Chemistry Lab

    Does the pressure exerted by a gas depend on its molar mass?

    asked by Heather
  171. Physics

    Three objects with masses m1 = 7.4 kg, m2 = 11 kg, and m3 = 18 kg, respectively, are attached by strings over frictionless pulleys (M1 hangs off the left side of the table and M3 hangs off the right side of the table with M2 between them on the table). The

    asked by Dug
  172. math

    a disk has an area of 250 square inches.what is theradius of the disk?

    asked by lori
  173. math

    (3x+1)^3/(3x+1)^3 +1 use the chain rule to complete the derivative

    asked by dino
  174. Algebra 2 Please Help

    21. A candle is 17 in. tall after burning for 3 hours. After 5 hours, it is 15 in. tall. Write a linear equation to model the relationship between height h of the candle and time t. Predict how tall the candle will be after burning 8 hours. (2 points)

    asked by Robert
  175. Biology (cell-molec)

    You wish to perform a restriction digest in a 20uL volume. Your DNA is 0.20 ug/uL and you wish to digest 1.0 ug. Your restriction enzyme is provided as 0.2 U/uL. Fill in the appropriate volumes: H2O, 10Xbuffer, DNA, and restriction enzyme. Please show

    asked by Redgy22
  176. Physics

    A railroad car with a mass of 1.86 104 kg moving at 2.80 m/s joins with two railroad cars already joined together, each with the same mass as the single car and initially moving in the same direction at 1.40 m/s. (a) What is the speed of the three joined

    asked by Angela
  177. input/output tables

    I have a blank table to fill in.It says divide m by 3 m÷3

    asked by paige
  178. Math

    23×17

    asked by Chase
  179. Computers

    How can computers affect our health?

    asked by Juanita
  180. Physics help PLZ!!

    Estimate the energy required from fuel to launch a 1465 kg satellite into orbit 1375 km above the Earth’s surface. Consider two cases: (a) the satellite is launched into an equatorial orbit from a point on the Earth’s equator, and (b) it is launched

    asked by Sarah
  181. Math

    Monday, Mr. C stacked a display case of 80 heads of lettuce. By end of day, some were sold. Tuesday Mr. C counted lettuce left and decided to add an equal number of lettuce (**hint - he doubled the leftovers).  At end of Tuesday, he sold the same number

    asked by John
  182. Math

    2(2+7)+(6x-5)=37

    asked by Chris
  183. physics

    If the height of the water slide in the figure is h = 2.8 m and the person's initial speed at point A is 0.47 m/s, what is the new horizontal distance L between the base of the slide and the splashdown point of the person?

    asked by kathy
  184. math

    A right triangle is formed in the first quadrant by the x- and y-axes and a line through the point (2,3). Draw a figure that illustrates the problem. What is the area of the triangle A as a function of the x-intercept of the line?

    asked by sarah
  185. xeco/212

    Wall Street Journal in which economists are quoted using positive and normative statements. o Provide one quote and its context for both a positive and normative statement. Explain your choices. o Evaluate the statement choices of your fellow students.

    asked by Eanice Dye
  186. math

    if there are 7 boxes of items and the least amount of items in any one of the boxes is 2 and the greatest amount in any one of the boxes is 4. What are all the possible total amounts of items in the 7 boxes combined?

    asked by Anonymous
  187. social studies

    what is venezuela's human development index

    asked by shion
  188. Math

    Which Statements of congruence are true and which are false and why? 177 _= 17 (mod 8) 871 _= 713 (mod 29) 1322 _= 5294 (mod 12) 5141 _= 8353 (mod 11) 13944 _= 8919 (mod 13) 67 x 73 _= 1 x 3 (mod 5) 17 x 18 x 19 x 20 _= 4! (mod 8) 83 (144 power) _= 15 (144

    asked by Jimmy
  189. math

    which measures is closest to 59mm? A 50mm B 65mm C 6mm D 6cm

    asked by mythreyee
  190. Chemistry

    how many grams of hydrogen occupy 40 ml at 300.15 K and 710 torr?

    asked by Trisha
  191. math

    what is 37% of 100

    asked by elementary kid
  192. Chemistry

    I titrated 0.25 grams of soda ash with 43.7 mL of HCl (0.115M) and 25 mL of H2O. I am getting over 100% sodium carbonate in my answer here are my steps that I took to get the answer can somebody help me see what I did wrong? mols HCl=(0.115M)x

    asked by Josh
  193. Algebra 2 Please Help

    22. The graph of g(x) is f(x) translated to the left 8 units and up 2 units. What is the function rule for g(x) given f(x) = x²? (2 points)

    asked by Robert
  194. Math

    2(2+7)+(6x-5)=37

    asked by Chris
  195. social studies

    what challenges face venezuela today

    asked by shion
  196. Math

    2(2x+7)+(3x-5)=37

    asked by Chris
  197. chemistry

    each element Na, Mg, Al, Si, P, S has a very big jump in ionization energies. Please explain what causes these jumps in energy?

    asked by kenvin
  198. calculus

    A baseball diamond is a square with side 90 ft. A batter hits the ball and runs toward first base with a speed of 24 ft/s. a.) At what rate is his distance from second base decreasing when he is halfway to first base? b.) At what is his distance from third

    asked by Dominic
  199. math

    height of a stack of 30 sheets of paper A 2mm B 2m

    asked by mythreyee
  200. math

    distance for a 1-hour bike ride A 800m B 8km

    asked by mythreyee
  201. math

    height of the tightrope in a circus A 15cm B 15m

    asked by mythreyee
  202. math

    which length is between 7m and 9m A 80 cm

    asked by mythreyee
  203. Math

    If Anna leaves her house at 11:00am and walks to her friends house located 1.34 miles away at 5 miles an hour walking speed, approximately what time will she get there?‎

    asked by Elise
  204. math

    which length is between 7m and 9m A 80 cm B 8km C 74cm D 740cm

    asked by mythreyee
  205. history

    what are some of the natural resources found at the grand canyon

    asked by destiny
  206. trig

    Show that the height, h, of the A-frame is equal to the expression 5sinc(1+2cosc). Im not sure what to do.

    asked by mike
  207. social study help plz

    3. Like many absolute monarchs before him, Peter the Great strengthened his own power by limiting the power of Russian (1 point) priests. nobles. peasants. women.

    asked by all about me
  208. algebra

    Kim spent a total of $100 for a laptop and 4 blank cds. The cost of the laptop was $92. Write and solve an equation to find, c, the cost of each blank CD

    asked by Anonymous
  209. chemistry

    how many moles of NaBr are produced from reacting 20.05 moles of AuBr3 with excess NaCN? AuBr3 +NaCN -> Au(CN)3 + NaBr

    asked by jim
  210. Health 8

    what happen to a person tolerance as they drink regularly?

    asked by Laruen
  211. CHEMISTRY

    Explain Why The Addition Of An Electron To A Chlorine Atom Is An Exothermic Process And The Addition Of An Electron To A Magnesium Atom Is An Endothermic Processs

    asked by ALEX
  212. Algebra 2

    To rationalize the denominator of 4/(2+√8), Brittany multiplied by (2-√8)/(2-√8) and Justin multiplied by (1-√2)/(1-√2). Explain why both are correct.

    asked by Selena
  213. Physics

    A volleyball is spiked so that its incoming velocity of +3.6 m/s is changed to an outgoing velocity of -16 m/s. The mass of the volleyball is 0.27 kg. What impulse does the player apply to the ball? Answer will be in kg*m/s

    asked by Elizabeth
  214. geometry

    A swimming pool is 3 ft deep in the shallow end the bottom of the pool has a steady downward drop of 12 degrees if the pool is 50 feet long how deep is the deepest end?

    asked by h
  215. math

    How can i get on xtramath

    asked by elementary girly
  216. math

    I need a set of 12 numbers that have maximum 8, range 6, mode 6, and median 5. Any answers?

    asked by Ingrid
  217. Gen Chem

    epsom salts, household ammonia, and rubbing alcohol are also consumer chemicals that could be used in this experiment. what are the chemical formulas for these substances?

    asked by Andrea
  218. Physics

    In a science fiction novel two enemies, Bonzo and Ender, are fighting in outer space. From stationary positions they push against each other. Bonzo flies off with a velocity of +1.7 m/s, while Ender recoils with a velocity of −2.7 m/s. (b) Determine the

    asked by Elizabeth
  219. Physics

    A 42.4-kg boy, riding a 2.29-kg skateboard at a velocity of +5.37 m/s across a level sidewalk, jumps forward to leap over a wall. Just after leaving contact with the board, the boy's velocity relative to the sidewalk is 6.30 m/s, 9.09° above the

    asked by Elizabeth
  220. check my precalc

    #1. (3x^3-4x^2-3x+4)/(x^3-5x) my answers: y-int: NONE x-int: 1, -1, and 4/3 x asymtope: x= 0 and +- square root of 5 y asym: y=3 If it crosses horiz asym: idk i need help on this #2. (x^4-7x^2+12)/(x^2-5x+4) x-int: -2, 2, and +- square root of 3 y-int: 3

    asked by Rebekah
  221. math

    write two equations that prove the associative property is not true for division

    asked by Jenny
  222. Economic

    What would happen to the profit maximizing level of output if the market price suddenly rose to $54 per case? Explain why the output level changes.

    asked by Sharon
  223. Physics

    The lead female character in the movie Diamonds Are Forever is standing at the edge of an offshore oil rig. As she fires a gun, she is driven back over the edge and into the sea. Suppose the mass of a bullet is 0.015 kg, and its velocity is +726 m/s. Her

    asked by Elizabeth
  224. Physics

    A jet is circling an airport control tower at a distance of 23.0 km. An observer in the tower watches the jet cross in front of the moon. As seen from the tower, the moon subtends an angle of 9.49 10-3 radians. Find the distance traveled (in meters) by the

    asked by Lindsay
  225. physics

    A 58.4-kg person, running horizontally with a velocity of +3.84 m/s, jumps onto a 10.7-kg sled that is initially at rest. (a) Ignoring the effects of friction during the collision, find the velocity of the sled and person as they move away. (Indicate the

    asked by Lindsay
  226. Math

    Estimate the sum by rounding: 7.68+3.52

    asked by Morgan
  227. Health 8 (2nd question)

    Describe the effects of alcohol Answer - There were 283 deaths recorded as alcohol-related and could cause blackouts, memory loss and anxiety. Am I correct and is my answer is good????

    asked by Laruen
  228. chemistry

    how many moles of NaBr are produced from reacting 20.05 moles of AuBr3 with excess NaCN? AuBr3 +NaCN -> Au(CN)3 + NaBr

    asked by jim
  229. Math

    Complete the analogy. Monday : Tuesday :: Saturday : _

    asked by Amy
  230. Pre-Cal

    State the transformations. Identify holes, vertical asymptotes, and horizontal asymptotes of each. (I'm fine with the asymptotes, just need help with stating the trandformations) f(x)= (3x+9)/(x+2)

    asked by Carson
  231. Spanish Beg. 1 - help!

    spanish words to talk about names so far I got... comom te llamas and me llamo is there a website that list all spanish words to talk about names I just need two more please help!

    asked by Laruen
  232. calculus

    Find the derivative of (x^2)(e^-3x)

    asked by Dominic
  233. math

    if there are 7 boxes of items and the least amount of items in any one of the boxes is 2 and the greatest amount in any one of the boxes is 4. What are all the possible total amounts of items in the 7 boxes combined?

    asked by Linda
  234. physics

    The human brain consumes about 23.7 W of power under normal conditions, though more power may be required during exams. How long can one candy bar (332 Calories per bar) power the normally functioning brain? (Note: The nutritional Calorie is equivalent to

    asked by kay
  235. Calculus

    Air pressure at sea level is 30 inches of mercury. At an altitude of h feet above the, air pressure, P, in inches of mercury, is given by, P =30e^(-3.23x10-5h) a)Find th equation of the tangent line at h=0. b)A rule of thumb is given by travelers is that

    asked by Andy
  236. Grammar

    She is fascinated to monkeys. Or She is fascinated by monkeys? Which do I use? To or By?

    asked by Anonymous
  237. Physics

    A 0.014 kg bullet is fired straight up at a falling wooden block that has a mass of 4.0 kg. The bullet has a speed of 760 m/s when it strikes the block. The block originally was dropped from rest from the top of a building and had been falling for a time t

    asked by Elizabeth
  238. physics

    A driver of a car traveling at 14.5 m/s applies the brakes, causing a uniform deceleration of 1.7 m/s 2 . How long does it take the car to accelerate to a final speed of 9.50 m/s? Answer in units of s

    asked by Anonymous
  239. Statistics

    A set of X and Y scores has SSx=10, SSY=20, and SP=8, what is the slope for the regression equation? a. 8/10 b. 8/20 c. 10/8 d. 20/8 For the regression equation, Y=bX+a, which of the following X,Y points will be on the regression line? a. a,b b. b,a c. 0,

    asked by Robbie
  240. math

    if you have a 6 foot long board and it's cut into 4/5 pieces how many pieces can you have a what portion of the board is left over

    asked by deanna
  241. Physics

    By accident, a large plate is dropped and breaks into three pieces. The pieces fly apart parallel to the floor, with v1 = 2.75 m/s and v2 = 1.65 m/s. As the plate falls, its momentum has only a vertical component, and no component parallel to the floor.

    asked by Elizabeth
  242. physics

    A bullet is fired straight up from a gun with a muzzle velocity of 253 m/s. Neglecting air resistance, what will be its displacement after 2.9 s? The acceleration of gravity is 9.8 m/s 2 . Answer in units of m

    asked by Anonymous
  243. math

    1,405ft 1 and 3/4in.cut into 1/2 in.thick slices.how many slices are there?

    asked by Anonymous
  244. math

    find the first derivative y= 2/5square root2x+1

    asked by Derik
  245. Math

    7(s-5)=42

    asked by Gail
  246. Chemistry

    What is the ionic equation for hydrolysis reaction of NH4C2H2O2 ? Thanks.

    asked by DJ
  247. physics

    A tennis ball is dropped from 1.24 m above the ground. It rebounds to a height of 1.05 m. With what velocity does it hit the ground? The acceleration of gravity is 9.8 m/s 2 . (Let down be negative.) Answer in units of m/s

    asked by Anonymous
  248. english-dr.faustus

    the warning Dr.Faustus teaches is? A-the devil is evil B-do not wish for more than heavenly power permits C-the end will justify the means D-both A and C

    asked by Brittany
  249. Organic chem

    What gases escaped during the sodium bicarbonate washing for the preparation of Synthetic Banana Oil lab. The isopentyl acetate, acetic acid, isopentyl alcohol, sulfuric acid, water , by-products goes through the sodium bicarbonate wash and the organic

    asked by Vai
  250. physics

    A 59.0-kg skater is traveling due east at a speed of 1.80 m/s. A 61.0-kg skater is moving due south at a speed of 6.20 m/s. They collide and hold on to each other after the collision, managing to move off at an angle south of east, with a speed of vf. Find

    asked by sammy
  251. CHEMISTRY

    Not for homework, just practice problems I'm having trouble with. Knowing that one mole of KHP, C8H5O4K, reacts with one mole of NaOH, what mass of KHP is required to neutralize 30.0 mL of the 0.10 M NaOH solution? if 24.5 mL of the 0.10 M NaOH solution is

    asked by Kimberly
  252. physics

    A 81.0 kg soccer player jumps vertically upwards and heads the 0.45 kg ball as it is descending vertically with a speed of 28.0 m/s. If the player was moving upward with a speed of 4.40 m/s just before impact. (a) What will be the speed of the ball

    asked by Anonymous
  253. physics

    A ball is thrown straight up with an initial speed of 60 m/s. How high does it go? Assume the acceleration of gravity is 10 m/s 2 . Answer in units of m 010 (part 2 of 2) 10.0 points How long is it in the air? Answer in units of s

    asked by Anonymous
  254. Physics

    A girl is skipping stones across a lake. One of the stones accidentally ricochets off a toy boat that is initially at rest in the water (see the drawing below). The 0.094-kg stone strikes the boat at a velocity of 14 m/s, 15° below due east, and ricochets

    asked by Elizabeth
  255. math

    Is this the right answer? 42+x-3(x-2)+11 42+8-3(8-2)+11 47×6+11 282+11 293

    asked by taliah
  256. Physics

    John's mass is 92 kg, and Barbara's is 67 kg. He is standing on the x axis at xJ = +7.50 m, while she is standing on the x axis at xB = +2.50 m. They switch positions. How far and in which direction does their center of mass move as a result of the switch?

    asked by Elizabeth
  257. Precalc

    #1. (3x^3-4x^2-3x+4)/(x^3-5x) my answers: y-int: NONE x-int: 1, -1, and 4/3 x asymtope: x= 0 and +- square root of 5 y asym: y=3 If it crosses horiz asym: idk i need help on this #2. (x^4-7x^2+12)/(x^2-5x+4) x-int: -2, 2, and +- square root of 3 y-int: 3

    asked by Rebekah
  258. chemistry

    Consider a mixture of air and gasoline vapor in a cylinder with a piston. The original volume is 70. cm3. If the combustion of this mixture releases 885 J of energy, to what volume will the gases expand against a constant pressure of 645 torr if all the

    asked by Brandon
  259. Social Studies 8 - help!

    What kind of business(es) did Vanderbilt control (location, dates number of employees, etc.)?

    asked by Laruen
  260. physics

    A child rides a toboggan down a hill that descends at an angle of 15.5 ◦ to the horizontal. The hill is 13.8 m long. What is the horizontal component of the child’s displacement? Answer in units of m 013 (part 2 of 2) 10.0 points What is the vertical

    asked by Anonymous
  261. Calculus 1

    Find the derivative of y with respect to x. y=(x^6/6)(lnx)-(x^6/36) So far this is what I've gotten: y=(x^6/6)(lnx)-(x^6/36) y=(1/6)x^6(lnx)-(1/36)x^6 y'=(1/6)x^5(1/x)+lnx(x^5)-(1/6)x^5 What do I do now?

    asked by Alex
  262. Physics

    The length of the rod will become exactly half of its original value. The length of the rod remains the same. The length of the rod will decrease. The length of the rod will increase. Wouldn't the length double, thus being answer D? No one has answered

    asked by Laurie
  263. Physics

    The maximum current in an AC circuit is 3.0 Amperes. What is the rms value of the current in the AC circuit? 0.5 A 2.1 A 3.0 A 4.2 A I would think D...

    asked by I'm on anon
  264. Physics

    A wagon is rolling forward on level ground. Friction is negligible. The person sitting in the wagon is holding a rock. The total mass of the wagon, rider, and rock is 92.5 kg. The mass of the rock is 0.310 kg. Initially the wagon is rolling forward at a

    asked by Elizabeth
  265. Physics

    A proton and an electron enter perpendicular to the direction of the magnetic field. The speed of the proton is twice the speed of the electron. What is the ratio of the force experienced by the proton to the electron? 1:2 1:3 2:1 3:1 I would think A, but

    asked by Physics Failure
  266. Social Studies 8 - help!!!!! (2nd question)

    What organizations or buildings named after cornelius vanderbilt? So far I only got Vanderbily University is there anything else????? I google it and that's all it gave me please help me!!!!!

    asked by Laruen
  267. Math

    On a standardized test, Phyllis scored 84, exactly one standard deviation about the mean. If the standard deviation for the test is 6, what is the mean score for the test?

    asked by Tanyetta
  268. math

    42+×-3(×-2)+11 × IS 8

    asked by taliah
  269. Can comeone check my answer for me. Many Thanks!

    A set of data is normally distributed with a mean of 1000 and standard deviation of 100. · What would be the standard score for a score of 1100? · What percentage of scores is between 1000 and 1100? · What would be the percentile rank for a score of

    asked by Ashley S
  270. Math

    What is the volume in cubic feet, of a box that is 3ft long, 8th wide, and 16ft high?

    asked by George
  271. math

    Chelsie saves 1/5 of her allowance and spends 2/3 of her allowance at the mall. What fraction of her allowance remains?

    asked by nathan
  272. math

    5n+2÷6 N is -4 5×-4=20+2=22÷6 3 4/6

    asked by taliah
  273. Math

    A shaded area reprsents approximately 95% of the scores on a standardized test. If these scores ranged from 78 to 92, whic could be the standard deviation?

    asked by Tanyetta
  274. Chemistry

    25.0mL of an acidic 0.100 mol/L tin (II) chloride solution required an average volume of 12.7 mL of potassium dichromate solution for a complete reaction. The amount of concentration of the potassium dichromate solution is _______ mmol/L How do you go

    asked by Sam
  275. Chemistry

    25.0mL of an acidic 0.100 mol/L tin (II) chloride solution required an average volume of 12.7 mL of potassium dichromate solution for a complete reaction. The amount of concentration of the potassium dichromate solution is _______ mmol/L How do you go

    asked by Sam
  276. Science 207

    As we reach a possible peak in oil production, what alternatives are forming? Consider the role of OPEC, perhaps in reorganizing and monitoring oil production. What do you think is the most viable way to address after effects of this possible peak?

    asked by Traci Davis
  277. Chemistry

    25.0mL of an acidic 0.100 mol/L tin (II) chloride solution required an average volume of 12.7 mL of potassium dichromate solution for a complete reaction. The amount of concentration of the potassium dichromate solution is _______ mmol/L How do you go

    asked by Sam
  278. math

    sharon is diving her green and blue rock collection into bags. Each bag will contain the same number of each color of rock. How many rocks of each color will be in each bag? there are 16 green marbles and 24 blue

    asked by Anonymous
  279. math

    3a+2-5a=-14 combine like terms right?

    asked by Gail
  280. chemistry

    What is the chemical formula of the compound that forms between lithium (Li) and phosphorus (P)?

    asked by Mary
  281. Math

    Sare estimated 32x45 by using 30x40. How could Sara make a more accurate estimate?

    asked by Alex
  282. math

    1.48=w+x/10

    asked by Hayden
  283. Physics

    How much heat must be removed from 500 grams of water at 0 degrees C to form ice at 0 degrees c?

    asked by Anon
  284. math

    5n+2 divided by 6 n is -4 5×-4+2÷6 -20+2÷6 -19÷6

    asked by taliah
  285. English

    essy in mockingbird how Caitlin over Family struggle abput 700 word see example of different essay

    asked by phill
  286. language

    what does scv, s, f, and scs mean when identifying sentences?

    asked by cunningham
  287. Physics

    A car traveling in a straight line has a velocity of 6.64 m/s at some instant. After 5.55s, its velocity is 10.9 m/s. What is its average acceleration in this time interval? Answer in units of m/s

    asked by Reece
  288. Math

    -4b-5+2b=10

    asked by Josh
  289. Finite---- PLEASE HELP

    A biologist finds that 32% of fruit flies have short wings and 27% have eye defects. Assuming these two events are independent, what is the probability that a randomly selected fruit fly has neither short wings nor eye defects?

    asked by Katie
  290. Math

    Use mathematical induction to prove that 2^(3n) - 3^n is divisible by 5 for all positive integers. ThankS!

    asked by Candice
  291. Precalculus

    cotx-cos^(3)xcscx

    asked by Sophia
  292. Math

    3.4t+0.08=11

    asked by Josh
  293. physics

    How many significant figures are in 24.010

    asked by Karla
  294. chemistry

    onic compounds have names that... (choose all that apply) might contain Roman numerals. might start with ammonium. start with the name of an anion. have prefixes, like di or penta. start with the name of a nonmetal.

    asked by Mary
  295. science

    These are the 3 questions that will help me study for my test. i need help understanding each of these thankyou :) Distinguish between microevolution and macroevolution. Explain how forest organisms (producers and consumers) separated by a highway could

    asked by Kevin
  296. Physics

    How many significant figures are in 1.30470

    asked by Abby
  297. physics

    John runs at 4.6 m/s for 7.53 s along the x axis. How far does John run? Answer in units of m

    asked by Sadie
  298. physics

    John runs at 4.6 m/s for 7.53 s along the x axis. How far does John run? Answer in units of m AND What relationship should be used to solve this situation? 1. x = v − t 2. x = v t 3. x = v + t 4. None of these 5. x = v

    asked by Sadie
  299. Grammar

    The plan was to quickly attack England and afterwards Turkey. Is the sentence correct?

    asked by Anonymous
  300. math

    (-7)(-4)(-2)=-56

    asked by taliah
  301. Poltics

    Who is the President of The Department of Human Services for Wayne County in Michigan?

    asked by Bonnie
  302. vocabulary

    very few starting pitchers have the to pich well for nine innings.

    asked by Anonymous
  303. physics

    A hydrogen atom has a diameter of about 10.1 nm. Express this diameter in meters, millimeters, and micrometers.

    asked by Katie
  304. physics

    A human hair is approximately 55 µm in diameter. Express this diameter in meters. Answer in units of m

    asked by Karen
  305. MATH

    Given Pr(a)= 0.9, Pr(C|A)= 0.78 and Pr(D|B) = 0.38. find a. (A|C) = b. (A|D) = c. (B|C) = d. (B|D) =

    asked by Katie
  306. math

    Angelique has five more than 3times the number of movies passes that she had last week. Let x represent the number of movie passes that she had last week. X(5x3)=15x

    asked by taliah
  307. Chemistry

    A student starts with 25 grams of sodium chloride as the limiting reactant and obtained 17.9 grams of dry pure sodium carbonate. What is the theoretical yield of sodium carbonate? What is the percent yield obtained by the student?

    asked by JaRad
  308. english

    they spent a year in france is an example of how fitzgerald

    asked by lori
  309. organic chemistry

    a careless organic chemistry student was performing "competing nucleophiles in nucleophilic substitution reactions" experiment , and left his container of tert-butyl chloride and tert-butyl bromide open to the air for several hours. what happened to the

    asked by lyly
  310. word problem

    jonah and his,friends go apple picking. jonah fills 5 baskets. each basket holds 15 apples. if 4 of jonahs friends pick the,same amount, how many apples do jonah and his friends pick in all? please solve,the problem.

    asked by stephie
  311. chemistry

    What is the final temperature of water when 2.70 grams of calcium chloride is dissolved in 25 mls of water at 25.5 Celcius.

    asked by Chelsi
  312. math

    For the functions f(x)=3x-12 and g(x)=(x/3)+4, find each of the following a) f o g (x) b) g o f (x)

    asked by arielle
  313. Math

    2x-1/3 +3 or=6

    asked by Kristine
  314. collegemathwordproblem

    When a number is decreased by 30%of itself, the result is 28. What is the number?

    asked by Angel
  315. Chemistry

    A student starts with 25 grams of sodium chloride as the limiting reactant and obtained 17.9 grams of dry pure sodium carbonate. What is the theoretical yield of sodium carbonate? What is the percent yield obtained by the student?

    asked by JaRad
  316. collegemathwordproblem

    When 80% of a number is added to the number, the result is 252. How do I find the number?

    asked by Angel
  317. English

    Hi i need help with an example of a Nominative Absolute sentences using an example from Emily Bronte's wuthering heights

    asked by Anthony
  318. Word problem

    One number exceeds another by 24. The sum of the numbers are 58. What are the numbers?

    asked by Gene
  319. physical science

    how much heat is absorbed by pouring 10 grams of 100 degree C liquid water on a students hand. The water is cooled to body temperature 37 degree C

    asked by Anon
  320. Word problem

    A new car worth 45K is depreciating in value by 5K per year. How can I write a formula that models the cars' value,y, in dollars, after x years?Then using the formula determine after how many years the cars' value will be 9K.

    asked by Gene
  321. physical science

    how much heat is absorbed by contacting 10 grams of 100 degree C steam by a students hand.

    asked by Anon
  322. math

    23 divided by 6=3.83333333333 the 23 is my points and i divide it to find my gpa how do i round the answer

    asked by jr
  323. Chemistry

    Calculate the number of carbon atoms in 0.75 L of acetone (CH3COCH3). (density=1.3g/mL and boiling point=48.5 degrees)

    asked by Erin
  324. math

    4(3) exponent is 2

    asked by jr
  325. Algebra 1

    Find the final amount of an investment if $2,000 is invested at an interest rate of 8% compounded quarterly for eight years. Please and thank you! I`ve been having so much trouble with this question. Thank you!

    asked by Casey
  326. Physics

    A 59.1 N/m spring is unstretched next to the 90 degree angle of an incline, and the system is released from rest. The mass of the block on the incline is m1 = 21.4 kg. (Neglect the mass of the pulley). If the coefficient of kinetic friction between m1 (the

    asked by Jack Johnson
  327. College math

    What do these mean? They are supposed to represent things but I don't understand them. C=2╥r for r, S=P+Prt for t, and A=2lw+2lh+2wh for h

    asked by Poe
  328. English

    I have to come up a reason for my claim help please? Thanks! My claim: technology is harmful to children and teens.

    asked by Emma
  329. CHEMISTRY

    Mass (before reaction): test tube + HCl(aq) + stir bar + capsule 26.600 g Mass (after reaction): test tube + HCl(aq) + stir bar + capsule 25.300 g Volume of water displaced from the squirt bottle 148 mL Temperature of the CO2(g) 287.4 K Pressure (atm)

    asked by Karina
  330. Word problem

    A new car worth 45K is depreciating in value by 5K per year. How can I write a formula that models the cars' value,y, in dollars, after x years?Then using the formula determine after how many years the cars' value will be 9K.

    asked by Gene
  331. collegemathwordproblem

    When 80% of a number is added to the number, the result is 252. How do I find the number?

    asked by Gene
  332. calculus

    Find the equation of the tangent line to the graph of the function f(x)=x-3/3x-5 at x=1

    asked by Derik
  333. Chemistry

    Consider the following reaction. 2 HCl(aq) + Ba(OH)2(aq) BaCl2(aq) + 2 H2O(l) ΔH = -118 kJ Calculate the heat when 103.6 mL of 0.500 M HCl is mixed with 300.0 mL of 0.550 M Ba(OH)2. Assuming that the temperature of both solutions was initially 25.0°C and

    asked by Bailey
  334. math

    23 divided by 6=3.83333333333 the 23 is my points and i divide it to find my gpa how do i round the answer

    asked by jr
  335. math

    if f(x)=3/x+x^3 and g(x)=1-x^2 find d/dx f(g(x)).

    asked by dino
  336. collegemathwordproblem

    One number exceeds another by 24. The sum of the numbers are 58. What are the numbers?

    asked by Angel
  337. college math word problem

    A new car worth 45K is depreciating in value by 5K per year. How can I write a formula that models the cars' value,y, in dollars, after x years?Then using the formula determine after how many years the cars' value will be 9K.

    asked by Angel
  338. college math please help

    What do these mean? They are supposed to represent things but I don't understand them. C=2╥r for r, S=P+Prt for t, and A=2lw+2lh+2wh for h

    asked by Angel
  339. college percentages

    One number exceeds another by 24. The sum of the numbers are 58. What are the numbers? please help!

    asked by Gene
  340. business English

    16. Which of the following would be the best revision of these sentences? "Our present receivables are in line with last year's. However, they exceed the budget. The reason they exceed the budget is that our goal for receivable investment was very

    asked by kesha
  341. Chemistry

    1.05 g of an unknown gas at 47 °C and 1.05 atm is stored in a 2.25-L flask. Density of the gas= 0.47g/L What is the molar mass of the gas?

    asked by Vid
  342. Math

    $175,000 loan with 6% fixed apr over 15 years. How much would the payment be?

    asked by Misty
  343. math

    How do I find the numbers adding up to 58 if one of those two numbers is greater by 24?

    asked by Gene
  344. prealgebra

    0.85km/s=m/min

    asked by anthony
  345. physics

    A crate pushed along the floor with velocity \vec{v} _{i} slides a distance d after the pushing force is removed.If the mass of the crate is doubled but the initial velocity is not changed, what distance does the crate slide before stopping?

    asked by nhan
  346. college math

    Calculate the future value of an ordinary annuity consisting of annual payments of $1,000 for 4 years if the payments earn 10.70% compounded annually for the first 2 years and 9% compounded annually for the last 2 years. For full marks your answer(s)

    asked by kerry
  347. Chemistry 103

    2NiO(s)→2Ni(s)+O2(g) If O2 is collected over water at 40.0C and a total pressure of 739mmHg , what volume of gas will be collected for the complete reaction of 24.18g of NiO?

    asked by YeJi Lee
  348. math word fu

    A new car worth 45K is depreciating in value by 5K per year. How can I write a formula that models the cars' value,y, in dollars, after x years?Then using the formula determine after how many years the cars' value will be 9K.

    asked by Jackie chan
  349. Math

    Julie is digging a square area in her backyard for a vegetable garden. If the area is 52 square feet, what is the approximate length of one side of her garden? 6 square feet 7 square feet 8 square feet 9 square feet 7 square feet is my answer, what's

    asked by Math
  350. NEED HELP ASAP, college math

    Find the future value! Periodic payment: $650.00 Payment interval: every month Term: 19 years, 2 months Interest rate: 4.75% Compound frequency: monthly

    asked by kerry
  351. Chemistry I

    In determining the heat capacity of a calorimeter, 50ml of water at 56*C is added to 50ml of water at 23*C. After about five minutes of mixing, the final temperature of the solution inside the calorimeter reached 37*C. Calculate the heat capacity of the

    asked by Josh
  352. Physics

    Suppose there are two transformers between your house and the high-voltage transmission line that distributes the power. In addition, assume your house is the only one using electric power. At a substation the primary of a step-down transformer (turns

    asked by Busker