10/29/16

There are 7 times as many trucks than cars. If the total number of cars and trucks is 72, how many trucks are there?
There are 7 times as many trucks than cars. If the total number of cars and trucks is 72, how many trucks are there
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10/29/16

cos2(x) sin4(2x)
Use the power reduction formulas to rewrite the expression. (Hint: Your answer should not contain any exponents greater than 1.)cos2(x) sin4(2x)
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10/29/16

115 bill discount it she paid before the 13
Bella received a  bill  for  $115 dated  April 2 with the  sales terase of 3/10 ,2/15, n/30
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10/29/16

Americansages 16-19 drive, on average, 7624 miles per year. About how many miles each week is that? Round to the nearest tenths
Note there are 52 weeks in a year
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10/29/16

x-2y+3z=7,2x+y+z=4,-3x+2y-2z=-10 i would like help to solve by using substitution and elimination
x-2y+3z=7,2x+y+z=4,-3x+2y-2z=-10 i would like help to solve by using substitution and elimination
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Fr

10/29/16

the width of a rectangular picture is 9 in. less than the length. the erae of the picture is 70 in
70in2  
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10/28/16

If Mg is added to a solution of Fe(NO3)3, what will the free metal be (the metal that is not part of a compound).
 Hello,   Can you please help me with this question?    If Mg is added to a solution of Fe(NO3)3, what will the free metal be (the metal that is not part of a compound).
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10/28/16

What's the minimum number of crop dusters needed to complete the job in 5 hours?
Each crop duster who works for Gary's can dust half an acre of crops in 25 minutes. The company must dust 8 0.75-acre lots and 12 1.5-acre lots to complete a certain job. What's the minimum number... more
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10/26/16

Six years ago, Caleb was one-fourth as old as he will be in thirty-nine years. How old is Caleb?
This is word tranlations  
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10/26/16

Expressions and Equations
A rectangular park 40 yards wide was redesigned, and a path 1 yard wide was built around it. How long was the park before if, after the path was built, its area became 4200 square yards?  
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10/26/16

A carousel makes 12 revolutions during a 5-minute ride. What is the angular frequency of the carousel?
 How do you find angular frequency in word problems?
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10/26/16

if the total surface area of a cube is 96cm2 find the length of its each side and its volume.
    if the total surface area of a cube is 96cm2 find the length of its each side and its volume.  
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10/26/16

The Question is in the Description because It did not fit on the Question Line.
A couple wishes to rent a car for the day while on vacation. Frank's Automobile rental wants $19 per day and $0.24 per mile and any part thereafter, while Coups-For-A-Day wants $18 per day and... more
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10/26/16

The Question is Below in the Description Box because it did not fit in the Question line
for a body falling from rest (Disregarding air resistance), the distance the body falls varies directly as the square of the time. If an object is dropped from the top of a tower 128 feet high and... more
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10/26/16

Discount questions
A 10% rebate enables one to get a meter of cloth extra for $45.  What was the original price per meter of cloth?
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10/26/16

statistics
UCLA undergrads sllep a mean of 7 hours a night with a standard deviation of 1.5 hours. Assume sleep time is unimodal and symmetric and refer to the the empirical Rule(68% observations fall within... more
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10/25/16

What is the volume of 65.0g of ether if the density of ether is 0.70glml?
Please include conversion factors and how you arrived at the final answer
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10/25/16

One of the first dental fillings consisted of 25.4g of silver, 10g of tin, 13.5g of copper, and 1.4g of zinc. How much tin is needed for a 47g of filling
Please show conversion factors on how you arrived at the final answer. 
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10/23/16

The sum of two integers is 18. Their product is 80. Find the numbers.
i need help on this math problem and if anyone could help me please  
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10/23/16

A ball is thrown straight up from the ground with an initial velocity of 64 feet per second. After how many seconds will it return to the ground?
algebra 2; word problems involving quadratic equations 
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10/23/16

use quadratic formula to solve
x^2-3x-5=0
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10/23/16

set up an equation and solve
three even consecutive integers such that twice the largest is equal to two more than three times the smallest
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10/22/16

solve question by elimination
a+b+c=-3 3b-c=4 2a-b-2c=-5
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10/22/16

Find the probability that he attends at least one of those classes.
A student attends mathematics class with probability of 65%. He attends drama class with probability of 85%. If attending those classes are independent, find the probability that he attends at... more
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10/22/16

Find the probability that the person selected is male given that they are colorblind.
Statistics show that 8% of men in a particular county are colorblind and 0.5% of women are colorblind. If 52.3% of the population is female, find the probability that the person selected is male... more
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