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December 19, 2014

December 19, 2014

Posted by **Kevin** on Tuesday, May 22, 2012 at 3:04pm.

- math -
**Reiny**, Tuesday, May 22, 2012 at 3:16pmyou have a AS where

a = 4, d = 3 and n = 73

sum(73) = (73/2)(2(4) + 72(3))

= (73/2)( 224) = 8176

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