If Z varies directly as y and inversely as square root of x and z = 5, when y =3,x=9. Find the value of z when y=18 and x = 25.

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.

Lola says these two expressions have the same value. expression a expression b which explains whether lola is correct?

Askateboard ramp is in the shape of a right triangle what is the height of the ramp