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^(n1)
6th term = 2000(.4)^5 = 20.48
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