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05-05-2020
Mathematics

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Lines a and b are parallel.
What is the value of x?

A. 5

B. 10

C. 35

D. 55

Lines a and b are parallel What is the value of x A 5B 10C 35 D 55 class=

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05-05-2020

Answer:

(A) 5

Step-by-step explanation:

Because of triangle sum, the vertical angle of the one whose label is 11x, is "90 - 7x," and because of Vertical Angle Theorem, 90 - 7x = 11x.

90 - 7x = 11x -->

90 = 18x -->

5 = x

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