Simplify the expression ( x^3 y^2 z^2)^-5 / (yz^1/4)^4 show your steps

C. 8 miles per hour

Step-by-step explanation:

It takes Diego of an hour to complete the lap = x 1 hour = hour

Distance of the track = 1 mile long

The speed of an object expresses the ratio of distance moved to time taken to cover the distance.

i.e speed =

           =

           = 8

Speed = 8 mile per hour

Therefore, Diego's bike has a speed of 8 miles per hour.