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Let $a_1,$ $a_2,$ $a_3,$ $\dots$ be an arithmetic sequence. Let $S_n$ denote the sum of the first $n$ terms. If $S_{20} = \frac{1}{5}$ and $S_{10} = 0,$ then find $S_{70}.$

 May 29, 2024
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https://web2.0calc.com/questions/help-algebra_31592

 

 

cool cool cool

 May 29, 2024

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