Enrique is a library volunteer. on saturday he shelved 240 books in one hour. at this rate how many books did he shelve in one minute?

What is the measure of x, in degrees

The ratio of rock songs to dance songs on jonathan’s mp3 player is 5: 6. the total number of rock and dance songs jonathan has is between 101 120. how many rock songs does he have?

To solve the system of equations below, grace isolated the variable y in the first equation and then substituted into the second equation. what was the resulting equation? 3y=12x x^2/4+y^2/9=1