(2x^3 z^2)^3 / x^3 y^4 z^2 * x^-4 z^3

If the measure of xyz is 81 what is the measure of yz

The difference of three and the reciprocal of a number is equal to the quotient of 20 and the number. find the number.

Marion has a bicycle that she is planning to take for a ride. the rim of the rear wheel lies 41 cm from the center of the wheel. the tire itself has a thickness of 3 cm. in order for marion to ride her bicycle 96,712 cm approximately how many rotations will the rear wheel make?