Given the sequence 7, 14, 28, 56, ..., which expression shown would give the tenth term?

2 answers:

8 0

This is a geometric progression with 7 as the initial term and 2 the common ratio.
<span>The formula to find the nth term is 7 times 2 to the n-1. </span>
<span>For the 10th term, n = 10 so the nth term equals 7 times 2 to the 9th power </span>
<span>or 7 * 2**9 = 7 times 512 which equals 3584. </span>
<span>Of your choices given above, the last one seems closest. </span>
<span>Hope this answers your question!</span>

ololo11 [35]2 years ago

3 0

Hello,

$u_{1}=7\\
 u_{2}=2*7\\
 u_{3}=2^{2}*7\\
 u_{4}=2^{3}*7\\\\

 u_{n}=2^{n-1}*7\\\\

 u_{10}=2^{9}*7=3584\\

$

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