3 years ago

Solve for x. Please look at the picture and answer it. Thank you.

Mathematics

1 answer:

Fofino [41]3 years ago

3 0

Answer:

ans = 9 degree

Step-by-step explanation:

81 + (4x) + (5x+18) = 180 (The sum of all angles of triangle is 180 degree)

81 + 4x + 5x + 18 = 180

99 + 9x = 180

9x = 180 - 99

9x = 81

x = $\frac{81}{9}$

x = 9 degree

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