Question

I NEED HELP PLEASE DONT SEND ME LINKS TO WEBSITES. ANSWER THE QUESTION HERE THANK YOU.

Answer 1

33

Explanation:

The two angles add up to 180 degrees because a straight line is 180 degrees

Add both equations and set equal to 180

3m + 138 + 7m +12 = 180

Algebra yeet

Simplify

10m +150 = 180

10m = 30

m = 3

Angle DBC is (7m + 12):

Substitute m = 3

7(3) + 12 = 21 + 12 = 33 degrees