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9 votes
9 votes
I need help solving for x. I think I got the answer but I’m not sure.

I need help solving for x. I think I got the answer but I’m not sure.-example-1
User Sheen
by
2.6k points

1 Answer

10 votes
10 votes

Answer:

The answer is 7

Explanation:

You are absolutely right. The angles of a triangle need to add up to 180 so from the picture we can create the following equation:

90 + 30 + 8x + 4 = 180 (adding together numbers)

124 + 8x = 180 (subtracting 124 from both sides to maintain equality)

124 - 124 + 8x = 180 - 124

8x = 56 (dividing by 8 both sides to isolate x)

(8*x)/8 = 56/8

x = 7

User Bihire Boris
by
2.9k points