Answer:
Step-by-step explanation:
By the exterior angle theorem,
Group like terms and solve for x.
Divide both sides by 19;
The missing factor is (a -1) I believe. If you foil (5a + 9)(a - 1) you would get 5a^2 + 4a - 9.
Answer:
$44 hope it helps
Step-by-step explanation:
B. I’m pretty sure. Since the arrow is pointing towards the S which is at the beginning.