Question

The measures of two supplementary angles are described by the expressions (10y−9)° ( 10 y − 9 ) ° and (20y+9)° ( 20 y + 9 ) ° . Find the measures of the angles. 

          The measures of two supplementary angles are described by the expressions (10y−9)° ( 10 y − 9 ) ° and (20y+9)° ( 20 y + 9 ) ° . Find the measures of the angles.

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Geometry A Common Core Curriculum
Geometry A Common Core Curriculum
Ron Larson, Laurie Boswell 1st Edition
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The measures of two supplementary angles are described by the expressions (10y−9)° ( 10 y − 9 ) ° and (20y+9)° ( 20 y + 9 ) ° . Find the measures of the angles.
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Transcript

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00:01 Sum of complementary angles is 90 degree...
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