Question

What is the value of x?

Answer 1

the answer is forty my yong child

Answer 2

When we add the angle that has x° and the angle that has (4x-20)° we need to get 180°.

Mathematically: x° + (4x-20)° = 180°. 

We solve for x:

x°+4x°-20°=180°, we put all numbers that we know on the right side and all unknowns on the left side:

5x°=200°, we divide by 5 and get:

x=40°

So the correct answer is D. x=40°.