Use any method to solve the equation. If necessary, round to the nearest hundredth. 9x^2 - 21 = 0

And arts academy requires there to be three teachers for every 75 students and six tutors for every 72 students how many tutors does the academy need if it has 120 students

Isabella's car used 3 gallons of gas to drive 48 miles. At what rate does her car use gas in gallons per mile?

A person has 22 coins, all nickels and dimes, worth one dollar and 50 cents. How many nickels are there? 8 14 22

A box of cereal weigh 600 grams how much is this weight in pounds? Explain your reasoning

What is 1,400 divided by 10?

What is the distributive property of - 4 (x-5)

A Circus charges two dollars and 50 Cent for kids tickets and six dollars for adults tickets. Last weekend, twice as many kids attended the circus than adults. If the ticket sales total $7150, how many kids attended the circus?

Spencer picked 85 pears. Gwen picked p fewer pears than Spencer. Write an expression that shows how many pears Gwen picked. Type an asterisk (*) if you want to use a multiplication sign and a slash (/) if you want to use a division sign.

8 was subtracted from a number. Then, that difference was multiplied by 2, after which that result was divided by 11. If the result was negative 2 what was the initial number

There was a sample of 600 milligrams of a radioactive substance to start a study. Since then, the sample has decayed by 7.9% each year. Let t be the number of years since the start of the study. Let y be the mass of the sample in milligrams.