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In the triangle below, what is the m
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In the triangle below, what is the m

In the triangle below, what is the m-example-1
User Changeling
by
3.3k points

1 Answer

2 votes

Answer: 125

Explanation:

The sum of all 3 interior angles of a triangle is 180.

18 + (12y + 5) + (4y - 3) = 180

20 + 16y = 180

Subtract 20 from both sides

16y = 160

Divide both sides by 16

y = 10

Now plug y back into equation for angle A

12y + 5

12(10) + 5

120 + 5 = 125

User Ataraxic
by
4.0k points
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