Question

Please need help pls answer.

Answer 1

Answer:

<A= 120°

<B= 60°

step by step explaination:

part A : <A+<B = 180°

part B : 4x+ 5(x-18) = 180°

4x + 5x- 90= 180°

9x= 180°+ 90°

x = 270°/9

x = 30°

<A = 4(30°) = 120°

<B = 180°- 120°= 60°