Question

Tell whether the angles are adjacent or vertical. Then find the value of z.
7xº
*(x+20)

Answer 1

x = 20

Explanation:

7x and x + 20 are adjacent angles and sum to 180° , that is

7x + x + 20 = 180

8x + 20 = 180 ( subtract 20 from both sides )

8x = 160 ( divide both sides by 8 )

x = 20