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4 November, 15:36

A pair of vertical angles has measures of (4x+9) degrees and 21 degrees. Solve the equation for x. A. 3 B. 7.5 C. 8 D. 48

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  1. 4 November, 16:07
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    The answer would be A. 3. This is because you set both measurements equal.

    (4x+9) = 21

    -9. - 9

    4x=12

    X=3
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