Posted by **Lea** on Wednesday, February 20, 2013 at 8:51am.

what is the 6th term of the geometric sequence 2000, 800, 320,..../

- algebra 2 -
**JJ**, Wednesday, February 20, 2013 at 9:36am
Start by taking the ratio of 800/2000

reduce it to 2/5 or .4

multiply 800 times .4 = 320

next multiply 320 times .4

and continue until you get to the 6th term.

- algebra 2 -
**Reiny**, Wednesday, February 20, 2013 at 10:19am
you could do that, or just use the formula for the

nth term of a GS, which is ar^(n-1)

6th term = 2000(.4)^5 = 20.48

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