SOLUTION: find the first the terms of each arithmetic series.
first number= 14 last number= -85 sum of first n numbers= 900
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first number= 14 last number= -85 sum of first n numbers= 900
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Question 341776: find the first the terms of each arithmetic series.
first number= 14 last number= -85 sum of first n numbers= 900 Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website! find the first the terms of each arithmetic series.
first number= 14 last number= -85 sum of first n numbers= -900
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S(n) = (n/2)(1st + last)
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-900 = (n/2)(14 + (-85))
-1800 = n(-71)
n = -1800/-71
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n has to be a whole number, and this is not.
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Cheers,
Stan H.
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