sydneybar sydneybar

14-09-2017
Mathematics

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The measures of two supplementary angles are in the ratio of 7:2. Find the measure of the larger angle

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wolf1728 wolf1728

14-09-2017

The 2 angles sum to 180 degrees
x + y = 180 degrees
7x = 2y
y = (7x / 2)
x + (7x / 2) = 180 degrees
2x + 7x = 360
9x = 360
x = 40 degrees
y = 140 degrees

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