Question

What is the value of the angle X in the following diagram ? 

A)60 degree
B)100 degree
C)120 degree
D)140 degree
Any help ?! plz​

Answer 1

D

`x + 40 \degree = 180\degree \\ x = 180\degree - 40\degree \\ x = 140\degree`

Answer 2

x = 140°

Explanation:

x and 40° are adjacent angles and sum to 180° , then

x + 40° = 180° ( subtract 40° from both sides )

x = 140°