11/29/14

Solve word problem
Use the compound interest formulas A=P(1+r/n)nt and A=Pert to solve.   Find the accumulated value of an investment of $6000 at 6.5% compounded continuously for 4 years.   
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11/29/14

Use the compound interest formulas A=P(1+r/n)
Use the compound interest formulas A=P(1+r/n)nt and A=Pert to solve.   Find the accumulated value of an investment of $10,000 at 7.5% compounded semiannually for 8 years.
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11/29/14

sally can paint a room in 7 hours while it takes steve 8 hours to paint to same room. how long would it take them to paint the room if they worked together
Rate of work problem
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11/25/14

In the reaction: 2PbCl2+ O2 -----> 2PbO + 2Cl2, how many grams of PbO are produced when 4.5 moles of PbCl2 are reacted with excess oxygen?
Chemistry practice problem. Would like to know if I am right so far.
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11/17/14

Evaluate 1,260.6H2 for H=31 to find the amount of energy per square meter for this wave.
Algebra 
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11/11/14

How much should be invested at each rate if the total interest earned is to be $700?
You inherit $10,000 with the stipulation that for the first year the money must be invested in two stocks paying 6% and 11% annual interest, respectively. How much should be invested at each rate... more
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11/11/14

Find the probability of rolling at least 3 even numbers in 7 rolls of six sided die
I need help setting this problem up.
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11/11/14

David left Boston at 25 km/h. 45 minutes later Peter rode out of Boston at 25 km/h. how far down the road will David be when Peter catches up to him?
This is a problem on my homework that I don't know how to do. 
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11/10/14

One pie serves 12 people. What expression can show the number of people that can be served with p pies
Answer choices for this problem (has to be at least 20 words so don't pay attention to this please:) thank you- Lillie   A. 12+p   b.12p   c.12    P   d.p/12
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11/10/14

Pre Cal Math Help!!!
A woman invests a total of $20,000 in two accounts, one paying 4% and the other paying 6.5% simple interest per year. Her annual interest is $950. How much did she invest at each rate?
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11/10/14

Pre Cal Math Help!!!
A chemist has two large containers of sulfuric acid solution, with different concentrations of acid in each container. Blending 310 mL of the first solution and 590 mL of the second gives a mixture... more
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11/10/14

how many moles of CO2 are produced when 0.450 mol of C6H12O6 reacts in this fashion?
how many moles of CO2 are produced when 0.450 mol of C6H12O6 reacts in this fashion?
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11/07/14

How many moles of methane are produced when 36.6moles moles of carbon dioxide gas react with excess hydrogen gas?
How many moles of methane are produced when 36.6moles  of carbon dioxide gas react with excess hydrogen gas?
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11/05/14

Company charges .03 per minute on weekends and .07 on weekdays.
Billed $542 minutes this month. Charged $29.06 for minutes. How many minutes did he talk weekdays and weekends?
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11/05/14

A 6000-seat theater has tickets for sale at $27 and $40. How many tickets sold at each price for a sellout performance to generate a total revenue of $181,500?
Really stumped on how to do this one.
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11/05/14

x/19 = -21
x over 19 = - 21 solve and check each equation  7th grade algebra  homework.  Thanks for your help
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11/05/14

Use the z-table to find the critical z-value for each of the indicated level of confidence? 99%z= ,98%z=,95%z=,80%z=
Use the z-table to find the critical z-value for each of the indicated level of confidence? 99%z= ,98%z=,95%z=,80%z=
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11/04/14

suppose math stress is a measurable quantity M, t denotes number of days studying before a test IF M(t)=133-50t+5t^2, what is the minimum level of math stress
this is a word problem for my college algebra class. please answer and explain how to work it out if you can. thanks
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11/02/14

a volume of nitrogen is collected over water at 25 degree celsius, the pressure in the lab is 757mmhg. what is the pressure exerted by the Nitrogen?
need help figuring out what equation to use, and need a good explanation of why and how it works in laymens terms. got lost in chemistry class sometime last week, and need help cataching back up!... more
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10/31/14

log(3x+5)=2
Solve the logarithmic equation for x.
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10/30/14

the area of a wall mural is 15 square feet. If Kelly can paint about 120 square inches per hour, how many hours will it take her to paint the mural
the area of a wall mural is 15 square feet. If Kelly can paint about 120 square inches per hour, how many hours will it take her to paint the mural
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10/28/14

A word problem
Over time the enrollment of a high school can be modeled by f(t)=32t+1255. The enrollment at another high school is g(t)=27t+1380. Write a rule for the total enrollment as a function of time
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10/28/14

What does it mean if the percent purity of a synthesized aspirin is 100% and the commercial is 90%?
What have I done wrong
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10/28/14

twice the sum of a number and three
twice the sum of a number and three ?  
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10/28/14

A fair die is rolled 30 times. what is the expected number of sixes to turn up in 30 rolls? What is the probability of getting at least 7 sixes in 30 rolls?
This is a question that is on binomial distribution. I have the formula and I also know how to enter it into my ti83 but the answer comes up differently every time. 
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