Question

What is m (There is no multiple choice just find m

Answer 1

Answer:

$160$ degrees.

Step-by-step explanation:

Line ABC is a straight line, and the angle on a straight line is always 180 degrees.

Since ABD + DBC = ABC, we know that $x+8x=180$

$9x=180$

Divide both sides by 9:

$x=180\div 9=20$

DBC is $8x=8\times 20=160$ degrees.