Ka0Andrasimo Ka0Andrasimo

19-11-2016
Mathematics

contestada

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

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syed514 syed514

20-11-2016

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

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HomertheGenius HomertheGenius

21-11-2016

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

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