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Radda [10]
3 years ago
11

Need help plz help plz

Mathematics
1 answer:
Artyom0805 [142]3 years ago
4 0

Answer:

x = 11

Step-by-step explanation:

Given

The attached triangle

Required

Find x

The theorem that applies to this question is the theorem of external angles. And it translates to:

11x +2 = 58 + 5x + 10

Collect Like Terms

11x -5x  = 58 + 10-2

11x -5x  = 66

6x = 66

Divide through by 6

\frac{6x}{6} = \frac{66}{6}

x = \frac{66}{6}

x = 11

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