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September 23, 2014

September 23, 2014

Posted by **Maria** on Friday, March 25, 2011 at 3:02pm.

- math -
**Reiny**, Friday, March 25, 2011 at 5:17pmthis is simply an arithmetic series where

a = 8

d = -5

n = 50

sum(n) = (n/2)[2a + (n-1)d)]

sum(50) = (50/2)[16 + 49(-5)]

= 25[-229]

= -5725

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