Z varies directly whith x^2 and inversely with y. when x=2 and y=4, z=3.
what is the value of z when x=4 and y=9?​

What is the value with a place of tenths in 907.456 1) 0 2) 6 3) 4 4) 5

Empty box + box + empty box fill in the box is equal to 30 how

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.