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5 March, 03:33

Two angles are complementary if the sum of their measures is 90 degrees. If the measure of an angle is 7 x degrees, represent the measure of its complement as an algebraic expression in x.

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Answers (2)
  1. 5 March, 03:36
    0
    Step-by-step explanation:

    90-7x
  2. 5 March, 03:54
    0
    90 - 7x

    Step-by-step explanation:

    We have that ∠ 1 + ∠ 2 = 90 ← ∠ 1 = 7x, thus

    7x + ∠ 2 = 90 (subtract 7x from both sides)

    ∠ 2 = 90 - 7x

    Thus the complement of 7x is 90 - 7x
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