taylornspencer12 taylornspencer12

21-06-2016
Mathematics

Answered

Find the sum of the geometric sequence 4, 16, 64, 256, 1024

Verified Answer :

21-06-2016

The formula for sum of a GP is
\(S_n= \frac{a_1(1-r^n)}{1-r}\)
Where \(S_n\) is the sum of 'n' terms, \(a_1\) is the first term, 'r' is the common ratio
The common ratio is 16 divided by 4, that's 4

\(S_{5}= \frac{4(1-4^5)}{1-4}\)
\(S_{5}= 1364\)

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Rooster04 Rooster04

10-05-2019

Answer:

4

Step-by-step explanation:

The pattern is that each number is multiplied by 4 so the answer is 4. Oh this was 3 years ago.... raspberries!!

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