Answer:
You have to find the are of the triangle: Area=(base* height)/2=
=(10x + 2y)*(3x - y)/2=(5x + y)*(3x - y)=
=15x2-2xy-y2.
b
Step-by-step explanation: its b
breken i gay
Step-by-step explanation:
The answer is -7 degrees. :)
-5+9-11=7