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6 March, 14:22

Two angles are complementary. The measure of ∠ABC is x° and the measure of ∠DBC is (3x + 10) °. What is the value of x? Enter your answer in the box.

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  1. 6 March, 15:26
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    Step-by-step explanation:

    Complementary means the total is 90 degrees.

    So 90=x+3x+10

    90=4x+10

    80=4x

    x=20 degrees
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