Answer:
Explanation:
2x + 18 = 5x
18 = 5x - 2x
3x = 18
x = 6
a) find m∠BAC
substitute x=6 to ∠BAC
∠BAC = 2x + 18
= 2(6) + 18
= 30°
b) find m∠B
∠B = 180 - ∠A - ∠C
= 180 - 30 - 30
= 120°
c) find m∠BAG
∠BAG = 180 - ∠A
= 180 - 30
= 150°
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