The office and the living room in a tiny house share a wall. The area of the office is 28 square feet. The area of the living room is 63 square feet. The expression 28+63 represents the total area in square feet. Which of the following expressions also show the total area of the two rooms? Choose ALL that apply. 7 multiplied by 4 + 7 multiplied by 9 7(4+9) 9(4+7) 9 multiplied by 4+ 9 multiplied by 7

Which statement explains how you could use coordinate geometry to prove the opposite sides of a quadrilateral are congruent? a. use the slope formula to prove the slopes of the opposite sides are the same. b. use the slope formula to prove the slopes of the opposite sides are opposite reciprocals. c. use the distance formula to prove the lengths of the opposite sides are the same. d. use the distance formula to prove the midpoints of the opposite sides are the same.