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9 October, 12:25

In △ABC, m∠C = (5x) °, m∠B=x°, and m∠A = (3x) °. What is m∠C?

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  1. 9 October, 15:03
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    Step-by-step explanation:

    Sum of all angles of triangle = 180

    m∠A + m∠B + m∠C = 180°

    3x° + x° + 5x° = 180°

    9x° = 180°

    x = 180/9

    x = 20°

    m∠C = 5x = 5*20° = 100°
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