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OpenStudy (anonymous):
What is the value of ∑n=13(17n−15)
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geerky42 (geerky42):
Just to be clear, you want to find the value of n such that \[\sum_{i=1}^ni = 13(17n-15)\]?
geerky42 (geerky42):
|dw:1433126788856:dw|
OpenStudy (zzr0ck3r):
\(\sum_{i=1}^n = \frac{n(n+1)}{2}\)
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