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2 years ago

PLEASE HELP 50 POINTS

Mathematics

1 answer:

Arte-miy333 [17]2 years ago

3 0

Answer:

30°

Step-by-step explanation:

A and B are same side interior angles and hence supplementary:

m∠A + m∠B = 180°

Substitute values and solve for x:

6x - 18 + 14x + 38 = 180
20x + 20 = 180
20x = 160
x = 160/20
x = 8

Find the measure of ∠A:

m∠A = 6*8° - 18° = 30°

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