Answer:
39,368
Step-by-step explanation:
The sum of n terms of a geometric sequence is
[tex]S_{n}[/tex] = [tex]\frac{a(r^n-1)}{r-1}[/tex]
where a is the first term and r the common ratio
r = - 24 ÷ 8 = - 3 and a = 8, thus
[tex]S_{9}[/tex] = [tex]\frac{8[(-3)^9-1}{-3-1}[/tex] = [tex]\frac{8[-19683-1]}{-4}[/tex] = [tex]\frac{8(-19684)}{-4}[/tex] = [tex]\frac{-157472}{-4}[/tex] = 39368
Answer:
A: 39,368
Step-by-step explanation:
I took the quiz on FLVS and got it right!
