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3 June, 18:15

Angle W and angle Y are supplementary. If measure of angle W=5x + 20 and measure of angle Y = 4*-11 find measure of angle W and measure of angle Y.

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  1. 3 June, 20:58
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    Two Angles are Supplementary when they add up to 180 degrees.

    5x+20 + 4x-11 = 180

    9x + 9 = 180 |:9

    x + 1 = 20

    x = 20 - 1

    x = 19

    m ∠W = 5x + 20 = 5*19 + 20 = 115°

    m ∠Y = 4x - 11 = 4*19 - 11 = 65°
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