Leila runs 4 miles in 30 minutes. at the same rate, how many minutes would she take to run 10 miles?

Hiroaki wants to find 3 3/4 - 7/8 explain why he must rename 3 3/4 to do the subtraction.

On a string instrument, the length of a string varies inversely as the frequency of its vibrations. an 11-inch string has a frequency of 400 cylces per second. find the frequency of a 10-icnch string.

Answer for 10 points show work you guys in advanced < 3