Someone help please ASAP.

In∆ABC, m
a) How are the measures of m
b) Solve for x:


Sagot :

[tex]3x+9+8x+11+5x-8=180\\ 16x=168\\ x=10.5\\\\ m\angle BAC=3\cdot10.5+9=40.5\\ m\angle ABC=8\cdot10.5+11=95\\ m\angle BCA=5\cdot10.5-8=44.5\\\\ [/tex]