Answer: A hope it helps
Step-by-step explanation:
Answer:
I put a pic, i hope ill help :)
If your asking what 9B coefficient is it's B
Answer:
2(-17+a^2+2g^2)
Step-by-step explanation:
step1
First, we need to solve for the common ratio from the data given by using the equation.
a(n) = a(1) r^(n-1)
15 = -3 r^(2-1)
-5 = r
r = -5
Then, we can find the sum by the expression:
S(n) = a(1) ( 1 - r^n) / 1-r
S(8) = -3 (1 + 5^8) / 1+5
S(8) = -195313
