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4 votes
A
B
C
D
87°
39°
(5x+2)°

User Xceph
by
8.4k points

1 Answer

2 votes

Answer:

The sum of the interior angles in a triangle is 180°. Therefore, we have:

A + B + C = 180

Substituting in the given values, we get:

87° + 39° + (5x + 2)° = 180°

Simplifying and solving for x, we get:

131° + 5x = 180°

5x = 49°

x = 9.8°

Therefore, the measure of angle C is:

5x + 2 = 5(9.8°) + 2 = 49° + 2 = 51°

So, the answer is (C) 51°.

Explanation:

User Peter Kellner
by
7.8k points

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