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I need help on this problem please!!

I need help on this problem please!!-example-1

1 Answer

4 votes

Answer:

Explanation:

angle C=180-111=69 degrees

The angles of a triangle must sum to 180 degrees so

3y+6+4y+69=180

7y+75=180

7y=105

y=15, since angle B=3y+6

B=3(15)+6

B=45+6

B=51 degrees

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