anthonylara13
Answered

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Hey need help trying to figure out the question let me know if you know what it is!

A (x=15)

B (x=120)

C (x=40)

D (x=20)

Hey Need Help Trying To Figure Out The Question Let Me Know If You Know What It Is A X15 B X120 C X40 D X20 class=

Sagot :

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Answer:

C. x = 40

Step-by-step explanation:

1. Get the supplementary angle of ∠9: 180 - m∠9 = 180 - (4x-10)

2. The inside angles of that triangle add up to 180: 30 + 3x + 180 - (4x-10) = 180

3. Solve for x:

30 + 3x + 180 - (4x-10) = 180

30 + 3x + 180 - 4x + 10 = 180 Distribute negative to parenthesis

220 - x = 180 Combine like terms

-x = -40 Subtract 220 on both sides

x = 40 Divide both sides by -1

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