Add all the sides together
7.2+14.8+16.1+18 = 56.1
(2x²<span> + 3x - 4) + (8 - 3x) + (-5x</span>²<span> + 2)
= </span> 2x² + 3x - 4 + 8 - 3x - 5x² + 2
= -3x² + 6
= 3(-x² + 2)
Answer:
110 degrees
Step-by-step explanation:
I don't know if that is correct.
Answer:
b
Step-by-step explanation:
