9x + 4y = -39 3x + y = -9 a. x = 5, y = -21 b. x = 1, y = -12 c. x = 12, y = -45 d. x = -12, y = 1

Giving 100 points asap bev has to cut her grandma's grass this weekend and wants to know exactly how much area she will be cutting. calculate the area of the polygon. be sure to show all your work and explain your answer.

Me, prove a quadrilateral with vertices g(1,-1), h(5,1), i(4,3) and j(0,1) is a rectangle using the parallelogram method and a rectangle method.

Two angles are complementary. the large angle is 36 more than the smaller angle. what is the measure of the large angle?