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22 September, 23:47

The ratio of the measures of two supplementary angles is 7:3. Find the measures of the angles.

A. 126° and 54°

B. 72° and 18°

C. 159° and 21°

D. 69° and 21°

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Answers (1)
  1. 23 September, 01:17
    0
    Supplementary angles are angles in which the total is equal to 180 degrees when summed. when the ratio of the angles is 7:3 we let x be angle 1 hence,

    7x + 3x = 180

    simplifying,

    10 x = 180

    x = 18

    Hence angle 1 is 126 degrees and angle 2 is 54 degrees. Answer is A.
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