What is the sum of all interior angles of a parallelogram

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.

Mackenzie needs to determine whether the rectangles are proportional. which process could she use? check all that apply.

What is the solution to this system of equations? y= 2x - 3.5 x - 2y = -14