math help!

math help!

The octane rating of a gasoline is a measure of the amount of isooctane in the gas. Manufacturers recommend using 93-octane gasoline on returned motors. How much 87-octane gas and 95-octane gas should...

Each course at Pease County Community College is worth either 3 or 4 credits. The members of the men's swim team are taking a total of 48 courses that are worth a total of 155 credits. How many 3-credit...

if x is 6 less than y and y is twice of z then what is the value of x when z = 2

dont know how to write out equation

Please show me the equation

The base of a new trophy has the form of a cyclinder sitting atop a rectangular solid. If 600 in3 of aluminum are needed to form the base, how tall is the rectangle portion

Consider two bikes, notably E and F, which start from the same point and travel along the same straight line from a start point P and reach an end point Q at a distance X from the start point. Bike...

I can not figure this problem, or others like it, out for the life of me. I have to turn this assignment in 3 hours. Can anyone help? The credit remaining on a phone card (in dollars)...

Need equation

John and Jose each improved their yards by planting grass sod and geraniums. They bought their supplies from the same sore. John spent $84 on 12ft^2 of grass sod and 5 geraniums. Jose spent $140 on...

investor has deposited $80,000 in an account that pays 5.3% annual interest, compounded continually. How long will it take until the accounts balance is $100,000?

1/5 of class is going on trip, there are 12 boys in class. 15 students are not going. how many are girls?

One number is 1 less than a second number. Twice the second number is 4 less than 3 times the first. Find the smaller number.

A group of 12 people will equally split 2/3 pounds of a rare spice. How much spice will each person get? Write your answer in simplest form.

Together Tim, Simon and Rob have 35 computer games. Simon has half as many as Tim, and Tim has half as many as Rob. How many computer games has Rob, Tim and Simon?

Aliyah had some candy to give to her four children. She first took ten pieces for herself and then evenly decided the rest among her children. Each child received two pieces. With how many pieces...

Scientists combined 5 milliliters of a substance containing 2% sandalwood with another substance containing 6% sandalwood to get a substance that contained 5% sandalwood. How many milliliters of the...

A loan officer at a bank has $85,000 to lend and is required to obtain an average return of per year. If he can lend at the rate of or the rate of how much can he lend at the rate and still...

I don't understand how to solve such a problem. Any help is much appreciated!

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