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

User Mkubilayk
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2 Answers

2 votes

Answer: x = 20

Explanation:

User Lidashuang
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6.4k points
1 vote
x+3x+10=90
4x=90-10
4x=80
x=20
User JimS
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