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Mathematics 18 Online
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? 2x+ 3x- 15 = 90° 2x- 3x- 15 = 180° 2x- 3x- 15 = 90° 2x+ 3x- 15 = 180

OpenStudy (raden):

both angles add up to 180 degrees

OpenStudy (anonymous):

then it has to be one of the two 180's

OpenStudy (raden):

i mean that angles has sum to 180

OpenStudy (raden):

so, 2x + 3x - 15 = 180

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