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April 21, 2014

April 21, 2014

Posted by **Lucy** on Tuesday, September 16, 2008 at 7:55pm.

Common ratio: 1/2

I got the ratio by dividing 1/16 by 1/8 which gave me 1/2 and I divided 1/8 by 1/4 to get 1/2-----That is how I got a common ratio of 1/2.

In order to obtain the 12th term I think I messed up somewhere:

a12=(1/16)(1/2)^12-1 which gave me 3.05E

I don't think that is right but don't know where I went wrong.

Help!!!

Thanks

- Pre-Calculus -
**Damon**, Tuesday, September 16, 2008 at 8:05pm3.05 E-5 not 3.05 E

Multiply by 1/2 11 times and the result is likely to be very small.

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