Question

Which answer choice is it?

A 6.88

B 11

C 3.24

D 55

Answer 1

B

Explanation:

The exterior angle of a triangle is equal to the sum of the 2 opposite interior angles.

4 + 11x is an exterior angle of the triangle , so

4 + 11x = 6x + 14 + 45

4 + 11x = 6x + 59 ( subtract 6x from both sides )

4 + 5x = 59 ( subtract 4 from both sides )

5x = 55 ( divide both sides by 5 )

x = 11 → B