Find the 9th term in the following geometric sequence ... round your answer to the nearest tenths ... 5,8.5,14.45,24.565.

Question

Mathematics

Kallie Crane

24 July, 00:00

Find the 9th term in the following geometric sequence ... round your answer to the nearest tenths ... 5,8.5,14.45,24.565.

+5

Answers (2)

Know the Answer?

Davis Fox · Answer 1

The geometric sequence:

a 1 = 5, a 2 = 8.5, a 3 = 14.45, a 4 = 24.565, ...

r = 8.5 / 5 = 1.7

a n = a 1 * r^ (n-1)

a 9 = 5 * 1.7^ (8) = 5 * 69.757574

a 9 = 348.7878205 ≈ 348.8

Scout · Answer 2

Common ratioo = 8.5 / 5 = 1.7 9th term = ar^ 9-1 = 5 * 1.7 ^ 8 sorry i havent got my calculator to work this out