Can 9+10 really equal 21 explain and show your work

Write the following comparison as a ratio and reduce to lowest terms. 21 quarters to 8 dollars

A production line produces 12 cd players every 4 hr. how many players can it produce in 37 hr?

What is 3x - 4 + 20 = 55

What integer is equivalent to93/2

Don't know how to do 3x+2y-2x+2=3x--2x+2y+2

A fish tank in the shape of a rectangular prism has dimensions of 14 inches, 16 inches, and 10 inches. the tank contains 1680 cubic inches of water. what percent of the fish tank is empty? 1) 10 2) 25 3) 50 4) 75

If a car travels 150 miles at a constant speed in 5 hours, at what speed was it traveling?

In june Ms seymore's water bill was $48. in july, it was 15%lower. What was the sim's water bill in july?

Last year, Jess saw x dramas and y comedies at the movie theater. If she went to the theater no more than 8 times, which inequality best represents the number of movies she saw?

What is another term for "unit rate"? what does the unit rate tell us about a situation?