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M∠A = 40º m∠B = 5xº Write an equation when Angle A and Angle B are supplementary angles (Supplementary angles equal 180°). Solve the equation for x, showing your work. What is the measure of Angle B?
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3 votes
M∠A = 40º

m∠B = 5xº

Write an equation when Angle A and Angle B are supplementary angles (Supplementary angles equal 180°). Solve the equation for x, showing your work. What is the measure of Angle B?

User Madis Pukkonen
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1 Answer

5 votes
180-40=140. 140/5 = 28

x= 28

angle B: 5(28) = 140
140 + 40 = 180

180=180
User Jjoselon
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7.6k points
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