Answer:
83x + 4
Step-by-step explanation:
9x^2 + 4 -x^2 + 3x
80x + 4 + 3x
83x + 4
Answer:
Don't take my word for it because I havent dont this in a while but I believe it is the top right
15
Step-by-step explanation:
A negative number being subtracted makes it positive
5 - -10
5+10 =15
Answer:
the second option
Step-by-step explanation:
The answers are:
A= 40°
B= 140°
C=180°