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19 June, 07:03

For ΔABC, m∠A = 2x m∠B = x m∠C = 3x What is m∠C?

A.

20°

B.

30°

C.

90°

D.

120°

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Answers (1)
  1. 19 June, 08:34
    0
    The sum of the 3 angles of a triangle need to equal 180 degrees.

    Using the information in the problem you have:

    2x + x + 3x = 180

    Simplify:

    6x = 180

    Divide each side by 6:

    X = 180 / 6

    x = 30

    Angle C = 3x = 3 (30) = 90 degrees.

    The answer is C.
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