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OpenStudy (anonymous):
Two angles are supplementary. One angle measures 2x, and the other angle measures 3x - 15. Which equation can you use to find the measure of each angle? a. 2x + 3x - 15 = 90 degrees b. 2x - 3x - 15 = 180 degrees c. 2x - 3x - 15 = 90 degrees d. 2x + 3x - 15 = 180 degrees
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OpenStudy (anonymous):
is D, because supplementary angles add up to 180. so 2x + 3x-15 = 180
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