Question

1 and 2 are supplementary Angles one is for Y +7 and two is 9Y +4 find two

Answer 1

the sum of supplementary angles equals 180°

(4y + 7) + (9y + 4) = 180°

                13y + 11 = 180

                       13y = 169

                           y = 13

m∠2 = 9y + 4   = 9(13) + 4   = 117 + 4   = 121

Answer: 121°