Rock

Newest questions and responses by Rock
  1. Math

    Please help in solving this problem. 2x cube 3 = 72x

    asked on December 15, 2018
  2. math

    Luke wants to paint his bedroom blue. He has 8/9 of a gallon of paint. If he has three walls left to paint, how much paint will each wall get? rub.

    asked on May 11, 2017
  3. Science

    How does friction affect the height that a ball will bounce? Can you give a hypothesis too of what i'll need to do please!? I'm confused

    asked on May 22, 2015
  4. chemistry

    In a constant-pressure calorimeter, 65.0 mL of 0.330 M Ba(OH)2 was added to 65.0 mL of 0.660 M HCl. The reaction caused the temperature of the solution to rise from 21.91 °C to 26.41 °C. If the solution has the same density and specific heat as water,

    asked on February 20, 2015
  5. physics

    In one day, a 85 kg mountain climber ascends from the 1440 m level on a vertical cliff to the top at 2360 m . The next day, she descends from the top to the base of the cliff, which is at an elevation of 1310 m . a) What is her gravitational potential

    asked on January 6, 2014
  6. 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 on October 22, 2012
  7. Alg2

    Please Help... You buy a commemorative coin for $25. The value of the coin increases 3.25% per year. How much will the coin be worth in 15 years? Round to the nearest cent.

    asked on December 13, 2011
  8. Alg 2

    Suppose you deposit a principal amount of p dollars in a bank account that pays compound interest. If the annual interest rate r (expressed as a decimal) and the bank makes interest payments n times every year, the amount of money A you would have after t

    asked on December 13, 2011
  9. Alg 2

    Please Help... You buy a commemorative coin for $25. The value of the coin increases 3.25% per year. How much will the coin be worth in 15 years? Round to the nearest cent.

    asked on December 13, 2011
  10. Alg2

    Help....Help... Suppose you deposit a principal amount of p dollars in a bank account that pays compound interest. If the annual interest rate r (expressed as a decimal) and the bank makes interest payments n times every year, the amount of money A you

    asked on December 12, 2011
  11. Alg2

    Help...Please... You buy a commemorative coin for $25. The value of the coin increases 3.25% per year. How much will the coin be worth in 15 years? Round to the nearest cent.

    asked on December 12, 2011
  12. Alg2

    Can't figure this one out...The Mendes family bought a new house 10 years ago for $120,000. The house is now worth $191,000. Assuming a steady rate of growth, what was the yearly rate of appreciation? Round your answer to the nearest tenth of a percent

    asked on December 11, 2011
  13. Alg2

    the annual Gross Domestic Product (GDP) of a country is the value of all of the goods and services produced in the country during a year. During the period 1985-1999, the Gross Domestic Product of the United States grew about 3.2% per year, measured in

    asked on December 9, 2011
  14. Alg2

    An anthropologist finds there is so little remaining Carbon-14 in a prehistoric bone that instruments cannot measure it. This means that there is less than 0.5% of the amount of Carbon-14 the bones would have contained when the person was alive. How long

    asked on December 9, 2011
  15. Alg2

    Radioactive iodine is used to determine the health of the thyroid gland. It decays according to the equation y=ae -0.0856t where t is in days. Find the half-life of this substance. Round to the tenths place.

    asked on December 8, 2011
  16. Alg2

    he annual Gross Domestic Product (GDP) of a country is the value of all of the goods and services produced in the country during a year. During the period 1985-1999, the Gross Domestic Product of the United States grew about 3.2% per year, measured in 1996

    asked on December 7, 2011
  17. Alg2

    The Mendes family bought a new house 10 years ago for $120,000. The house is now worth $191,000. Assuming a steady rate of growth, what was the yearly rate of appreciation? Round your answer to the nearest tenth of a percent (1.2% etc)

    asked on December 6, 2011
  18. Alg2

    The annual Gross Domestic Product (GDP) of a country is the value of all of the goods and services produced in the country during a year. During the period 1985-1999, the Gross Domestic Product of the United States grew about 3.2% per year, measured in

    asked on December 6, 2011
  19. Alg2

    An anthropologist finds there is so little remaining Carbon-14 in a prehistoric bone that instruments cannot measure it. This means that there is less than 0.5% of the amount of Carbon-14 the bones would have contained when the person was alive. How long

    asked on December 6, 2011
  20. Alg2

    Radioactive iodine is used to determine the health of the thyroid gland. It decays according to the equation y=ae -0.0856t where t is in days. Find the half-life of this substance. Round to the tenths place.

    asked on December 6, 2011
  21. Alg2

    Zeus Industries bought a computer for $2500. It is expected to depreciate at a rate of 20% per year. What will the value of the computer be in 2 years?

    asked on December 6, 2011
  22. Alg2

    Help w/Word Prob: LAW ENFORCEMENT A police accident investigator can use the formula s=2√5l to estimate the speed=s of a car in miles per hour based on the length=l in feet of the skid marks it left. How fast was a car traveling that left skid marks 120

    asked on December 4, 2011
  23. Alg2

    How many ways can six different books be arranged on a shelf if one of the books is a dictionary and it must be on an end?

    asked on December 4, 2011
  24. Alg2

    For a college application, Macawi must select one of five topics on which to write a short essay. She must also select a different topic from the list for a longer essay. How many ways can she choose the topics for the two essays?

    asked on December 4, 2011
  25. Alg2

    I need help with problem solving...

    asked on December 4, 2011
  26. Alg2

    I need more help

    asked on December 4, 2011
  27. Alg2

    A video store has 8 new releases this week. Each is available on videotape and on DVD. How many ways can a customer choose a new release and a format to rent? answer here How many ways can six different books be arranged on a shelf if one of the books is a

    asked on December 3, 2011
  28. Alg2

    # of possibilities of arrangements for the word intercept?

    asked on December 3, 2011
  29. Alg2

    what are the # of possibilities of buying 2 CD's from 10 that are on sale?

    asked on December 1, 2011
  30. Alg2

    what is the number of possibilities of arrangements of the letters in the word intercept?

    asked on November 30, 2011
  31. Alg2

    what is the # of possibilities of buying 2 CD's from 10 that are on sale?

    asked on November 30, 2011
  32. Alg2

    how many ways can 5 members of the 100 member US senate be chosen to be put on a committe?

    asked on November 30, 2011
  33. math

    on his first exam, he studied for 10 hours and went to tell the mall for 4hours, and got a score of 85. how long should he study to get a grade of 96 and go to the mall for 17 hours? grade varies directly with studying and inversely with going to the mall.

    asked on August 2, 2011
  34. college algeb

    when ax^2+bx+c is divided by x-1, the remainder is 10 if the same poly. is divided by x+2 the remainder is 1. x+1 is a factor of the polynomial. Find a,b, and c.

    asked on July 20, 2011
  35. physics

    Part (a) of the figure below is a partial graph of the position function x(t) for a simple harmonic oscillator with an angular frequency of 1.00 rad/s; Part (b) of the figure is a partial graph of the corresponding velocity function v(t). The vertical axis

    asked on February 4, 2011
  36. physics (shm)

    Suppose that a simple pendulum consists of a small 55.0 g bob at the end of a cord of negligible mass. Suppose that the angle between the cord and the vertical is given by θ = (0.0800 rad) cos[(4.91 rad/s)t + ϕ]. (a) What is the pendulum's length? units

    asked on February 4, 2011
  37. physics (simple harmonic motion)

    If the phase angle for a block-spring system in SHM is π/5 rad and the block's position is given x = xm cos(ωt + ϕ), what is the ratio of the kinetic energy to the potential energy at time t = 0?

    asked on February 4, 2011
  38. simple harmonic motion.

    A 5.80 kg object on a horizontal frictionless surface is attached to a spring with spring constant 860 N/m. The object is displaced from equilibrium 50.0 cm horizontally and given an initial velocity of 9.9 m/s back toward the equilibrium position. (a)

    asked on February 4, 2011
  39. physics

    In the figure below, the fresh water behind a reservoir dam has depth D = 13 m. A horizontal pipe 6.0 cm in diameter passes through the dam at depth d = 6.0 m. A plug secures the pipe opening. (a) Find the magnitude of the frictional force between plug and

    asked on January 28, 2011
  40. physics

    The intake in the figure has cross-sectional area of 0.75 m2 and water flow at 0.41 m/s. At the outlet, distance D = 180 m below the intake, the cross-sectional area is smaller than at the intake and the water flows out at 9.6 m/s. What is the pressure

    asked on January 28, 2011
  41. physics

    Three liquids that will not mix are poured into a cylindrical container. The volumes and densities of the liquids are 0.35 L, 2.6 g/cm3; 0.25 L, 1.0 g/cm3; and 0.40 L, 0.60 g/cm3. What is the force on the bottom of the container due to these liquids? One

    asked on January 28, 2011
  42. physics

    the merging of two streams to form a river. One stream has a width of 8.9 m, depth of 3.5 m, and current speed of 2.1 m/s. The other stream is 6.5 m wide and 3.7 m deep, and flows at 2.2 m/s. The width of the river is 10.7 m, and the current speed is 3.1

    asked on January 28, 2011
  43. physics

    the merging of two streams to form a river. One stream has a width of 8.9 m, depth of 3.5 m, and current speed of 2.1 m/s. The other stream is 6.5 m wide and 3.7 m deep, and flows at 2.2 m/s. The width of the river is 10.7 m, and the current speed is 3.1

    asked on January 28, 2011
  44. Integers

    Suppose a1, a2, . . . , an is a list of n numbers with the following properties: The sum of those n numbers is 500. The sum of the smallest three of those numbers is 48. The sum of the largest two of those numbers is 35. (Note: There might be some

    asked on April 15, 2010
  45. math

    n+6.5=12 Subtract 6.5 from 12 to find your answer.

    asked on January 25, 2007
  46. math

    n-31/2=12 what is 2+2 do you all know any website that help you with your homework Yes. This website has many teachers who will help you with your homework. Please post your question. 2 = 1+1 2 + 2 = (1+1) + (1+1) = 1 + 1 + 1 + 1 = 4

    asked on January 25, 2007
  47. math

    n+1.5=12 n + 1.5 = 12 n = 12 - 1.5 What do you think n equals?

    asked on January 25, 2007
  1. algebra

    21000- 0.14v

    posted on December 13, 2017
  2. Science

    S**k F**k

    posted on July 9, 2017
  3. math

    68

    posted on December 23, 2016
  4. chemistry

    Its easy

    posted on April 28, 2016
  5. The Giver

    I disagree, and that was your last chance.

    posted on May 22, 2015
  6. The Giver

    which one would you pick?

    posted on May 22, 2015
  7. The Giver

    2 and 3 are right re- check #1

    posted on May 22, 2015
  8. The Giver

    yea sure

    posted on May 22, 2015
  9. The Giver

    ok

    posted on May 22, 2015
  10. Science help please

    Solar Panel

    posted on April 30, 2015
  11. math

    A 72-ohm coil of wire is connected in series with an adjustable resistor (rheostat) whose resistance can be varied from 0 to 88 ohms. If the line potential is 115 volts, calculate (a) the range through which the coil current can be varied, (b) the rheostat

    posted on August 24, 2014
  12. physics.

    A vertically upward since that is the direction of centripetal acceleration at that time.

    posted on May 7, 2013
  13. Chemistry 20 titration

    up

    posted on October 23, 2012
  14. s.s help

    :3

    posted on April 30, 2012
  15. sCIENCE PLZZZZZZZZ HELP

    BADD

    posted on April 25, 2012
  16. Alg2

    387.187

    posted on December 13, 2011
  17. Alg2

    I can See It!!! I was multiplying 600 & 2 together... Thanks :)

    posted on December 4, 2011
  18. Alg2

    Thanks, I did!

    posted on December 4, 2011
  19. Alg2

    Help w/Word Prob: LAW ENFORCEMENT A police accident investigator can use the formula s=2√5l to estimate the speed=s of a car in miles per hour based on the length=l in feet of the skid marks it left. How fast was a car traveling that left skid marks 120

    posted on December 4, 2011
  20. Alg2

    240

    posted on December 4, 2011
  21. Alg2

    YaY!!!!!

    posted on December 4, 2011
  22. Alg2

    20

    posted on December 4, 2011
  23. physics (shm)

    I got .41 m for L in part a and trying to figure out part B!!!

    posted on February 4, 2011
  24. physics

    I got part a) 166.25 b)?

    posted on January 28, 2011
  25. physics

    thanks

    posted on January 28, 2011