Solve for z.

z · 0.4 = 0.4

z =

If you roll two fair dice (one black die and one white die), in how many ways can you obtain a 4 on at least one die?

You are cycling around europe with friends. a cycling festival is starting soon in barcelona. it will take 4.5 hours to cycle there. how many minutes in total is this?

Write the following as a base and exponent