Question

Solve for x. Show all work.
9x
139°
71°
5х
92

Answer 1

x = 17

Explanation:

number of sides (n) = 5

Sum of angles of polygon = (n - 2) *180

= 3 * 180 = 540

9x + 71 + 92 + 5x + 139 = 540

9x +5x + 71 + 92 + 139 = 540

14x + 302 = 540

14x = 540 - 302

14x = 238

x = 238/14

x = 17