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What is the value of y?

 

Acceptfully  Nov 21, 2017
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 #1
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AB = AC.....so  angle ABC  = ACB...so each angle = 25°

 

So  the remaining angle = 180 - 25 - 25  =  130°

 

So

 

3y + 70  =  130     subtract 70 from both sides

 

3y  = 60     divide both sides by 3

 

y  = 20

 

 

cool cool cool

CPhill  Nov 21, 2017

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