Mark M. answered • 07/04/18
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S = n(a1 + an) / 2
2S = n(a1 + an)
2S / n = a1 + an
(2S / n) - a1 = an
Leslie B.
asked • 07/04/18The formula s=n(a1+an)/2 gives the partial sum of an aritmetic sequence. What is the formula solved for an
The description is math i nedd an answer quick
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