A water pump fills a swimming pool at a rate of 80 cubic feet per hour. A swimming pool measures 10
feet by 8 feet by 5 feet. How many hours will it take
the pump to fill the pool?

I know it’s really late at now or early in the morning but can someone plz help me on this plz

Complex numbers multiply √-4 * √-25 and show all intermediate steps. alternative notation is sqrt(-4) * sqrt(-25).

At a book fair, joe bought 24 books at 3 for $5 and had $2 left. how much money did he have at first?

The length of a rectangular board is 3 feet less than twice its width. a second rectangular board is such that each of its dimensions is the reciprocal of the corresponding dimensions of the first rectangular board. if the perimeter of the second board is one-fifth the perimeter of the first, what is the perimeter of the first rectangular board?