Please help me thanks

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asked Sep 18, 2019 83.9k views

1 Answer

Daniel Kurz · Answer 1 · 2019-09-22T12:30:27+0000

Look at the picture.

The sum of measures of the angles in a triangle is equal 180°.
Therefore we have the equation:

$2y^o+50^o=180^o\ \ \ |-50^o\\\\2y^o=130^o\ \ \ |:2\\\\y^o=65^o$
Answer: 65°

Please help me thanks

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