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16 May, 18:08

Two angles are supplementary. The first angle has 20º more then the second angle. How many degrees are in each angle?

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Answers (2)
  1. 16 May, 20:20
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    The first angle measures 100 deg, and the second angle measures 80 deg.
  2. 16 May, 22:02
    0
    The sum of the measures of two supplementary angles is 180 degrees.

    The second angle measures x.

    The first angle measures 20 deg more than x, or x + 20.

    The sum of their measures is 180 deg.

    x + x + 20 = 180

    2x + 20 = 180

    2x = 160

    x = 80

    The second angle measures 80 deg.

    x + 20 = 80 + 20 = 100

    The first angle measures 100 deg.

    Answer: The first angle measures 100 deg, and the second angle measures 80 deg.
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