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23 January, 17:51

Angle A and angle B are complementary

The measure of angle A is (5x + 15) °

• The measure of angle B is 30°

What is the value of x?

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Answers (1)
  1. 23 January, 17:54
    0
    Step-by-step explanation:

    ∠A + ∠B = 90° {given they are complementary}

    5x + 15 + 30 = 90

    5x + 45 = 90

    5x = 90 - 45

    5x = 45

    x = 45/5

    x = 9
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