Question

In the diagram, m_1 = (4x + 10)° and mZ2 = (x + 20°. The value of x' is:

Answer 1

x=30

(Option 2)

Explanation:

Well if the <1+<2=180 then you can put the equation as 4x+10+x+20=180. We can simplify that to be 5x+30=180. Minus 30 from both sides: 5x=150; x=30