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07-10-2020
Mathematics

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Given ∠A and ∠B are vertical angles with m∠A=10x+5 and m∠B=15x−10 .

What is x?

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flames0 flames0

07-10-2020

10x + 5= 15x - 10

5= 5x - 10

15 = 5x
divide both sides by 5

x = 3

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