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12 June, 03:38

Following diagram find the missing measure.

m 21 = 3x, m

2 = 4x, m

3 = 2x, find x.

A. 10

B. 20

C. 30

D. 40

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Answers (1)
  1. 12 June, 03:59
    0
    B

    Step-by-step explanation:

    The diagram basically shows three angles that make up a straight line.

    We know the angle of a straight line is 180°.

    Since there are three angles, Angle 1, Angle 2, and Angle 3 that make up a straight line, we can write:

    Angle 1 + Angle 2 + Angle 3 = 180

    3x + 4x + 2x = 180

    9x = 180

    x = 180/9

    x = 20

    The correct answer is B
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