Ben performed a transformation on trapezoid PQRS to create P'Q'R'S', as shown in the figure below: What transformation did Ben perform to create P'Q'R'S'?

Astandard deck of cards contains 52 cards. one card is selected from the deck. (a) compute the probability of randomly selecting a seven or king. (b) compute the probability of randomly selecting a seven or king or jack. (c) compute the probability of randomly selecting a queen or spade.

An air conditioning system can circulate 350 cubic feet of air per minute. how many cubic yards of air can it circulate per minute?

Julius sold five times as many computers as sam sold last year. in total, they sold 78 computers. how many computers did julius sell?