Mike completes 2/3 of a work in 25 1/2 hours. How many hours does he need to finish the whole work?

Write the following as a base and exponent

The difference between two numbers is one. three times the larger number minus two times the smaller number is 9. what are the two numbers

If set d is not the empty set but is a subset of set e, then which of the following is true? d ∩ e = d d ∩ e = e d ∩ e = ∅