The function y varies jointly as x and z, and y = 24 when x = 4 and z = 18. What is the value of when x = 15 and z = 10?

Dilations map circles to circles and ellipses to ellipses with the same. true or false

An episode of a television show is 60 minutes long when it originally airs with commercials. on a dvd without commercials, the episode is only 417 minutes long. how many1-minute commercials did the episode include when it originally aired? write and solve an equation to justify your answer.

Anyone? 15m is what percent of 60m; 3m; 30m; 1.5 km?