Rock
Newest questions and responses by Rock
Math
Please help in solving this problem. 2x cube 3 = 72x
asked on December 15, 2018 
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 
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 
chemistry
In a constantpressure 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 
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 
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 2A base is titrated with an acid solution until the indicator changes colour. This change in the
asked on October 22, 2012 
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 
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 
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 
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 
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 
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 
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 19851999, the Gross Domestic Product of the United States grew about 3.2% per year, measured in
asked on December 9, 2011 
Alg2
An anthropologist finds there is so little remaining Carbon14 in a prehistoric bone that instruments cannot measure it. This means that there is less than 0.5% of the amount of Carbon14 the bones would have contained when the person was alive. How long
asked on December 9, 2011 
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 halflife of this substance. Round to the tenths place.
asked on December 8, 2011 
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 19851999, the Gross Domestic Product of the United States grew about 3.2% per year, measured in 1996
asked on December 7, 2011 
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 
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 19851999, the Gross Domestic Product of the United States grew about 3.2% per year, measured in
asked on December 6, 2011 
Alg2
An anthropologist finds there is so little remaining Carbon14 in a prehistoric bone that instruments cannot measure it. This means that there is less than 0.5% of the amount of Carbon14 the bones would have contained when the person was alive. How long
asked on December 6, 2011 
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 halflife of this substance. Round to the tenths place.
asked on December 6, 2011 
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 
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 
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 
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 
Alg2
I need help with problem solving...
asked on December 4, 2011 
Alg2
I need more help
asked on December 4, 2011 
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 
Alg2
# of possibilities of arrangements for the word intercept?
asked on December 3, 2011 
Alg2
what are the # of possibilities of buying 2 CD's from 10 that are on sale?
asked on December 1, 2011 
Alg2
what is the number of possibilities of arrangements of the letters in the word intercept?
asked on November 30, 2011 
Alg2
what is the # of possibilities of buying 2 CD's from 10 that are on sale?
asked on November 30, 2011 
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 
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 
college algeb
when ax^2+bx+c is divided by x1, 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 
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 
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 
physics (simple harmonic motion)
If the phase angle for a blockspring 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 
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 
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 
physics
The intake in the figure has crosssectional area of 0.75 m2 and water flow at 0.41 m/s. At the outlet, distance D = 180 m below the intake, the crosssectional 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 
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 
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 
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 
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 
math
n+6.5=12 Subtract 6.5 from 12 to find your answer.
asked on January 25, 2007 
math
n31/2=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 
math
n+1.5=12 n + 1.5 = 12 n = 12  1.5 What do you think n equals?
asked on January 25, 2007

algebra
21000 0.14v
posted on December 13, 2017 
Science
S**k F**k
posted on July 9, 2017 
math
68
posted on December 23, 2016 
chemistry
Its easy
posted on April 28, 2016 
The Giver
I disagree, and that was your last chance.
posted on May 22, 2015 
The Giver
which one would you pick?
posted on May 22, 2015 
The Giver
2 and 3 are right re check #1
posted on May 22, 2015 
The Giver
yea sure
posted on May 22, 2015 
The Giver
ok
posted on May 22, 2015 
Science help please
Solar Panel
posted on April 30, 2015 
math
A 72ohm 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 
physics.
A vertically upward since that is the direction of centripetal acceleration at that time.
posted on May 7, 2013 
Chemistry 20 titration
up
posted on October 23, 2012 
s.s help
:3
posted on April 30, 2012 
sCIENCE PLZZZZZZZZ HELP
BADD
posted on April 25, 2012 
Alg2
387.187
posted on December 13, 2011 
Alg2
I can See It!!! I was multiplying 600 & 2 together... Thanks :)
posted on December 4, 2011 
Alg2
Thanks, I did!
posted on December 4, 2011 
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 
Alg2
240
posted on December 4, 2011 
Alg2
YaY!!!!!
posted on December 4, 2011 
Alg2
20
posted on December 4, 2011 
physics (shm)
I got .41 m for L in part a and trying to figure out part B!!!
posted on February 4, 2011 
physics
I got part a) 166.25 b)?
posted on January 28, 2011 
physics
thanks
posted on January 28, 2011