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Is the sequence 1280, 640, 320, ... arithmetic or geometric?
Find the general term and find t7.

 

I appreciate all the help I can get! <3 

Supergirl  May 23, 2017
 #1
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This is a geometric sequence because each term is a constant multiple of the previous one (namely 1/2 here).

 

Have a look at http://www.mathsisfun.com/algebra/sequences-sums-geometric.html for more details.

Alan  May 23, 2017

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