Mathematics, 26.07.2020 01:01 herchellann302

$\large\displaystyle\sum\limits_{k=1}^{n}{{a_k}}$ The series 25 + 75 + 125 + ... + 775 + 825 can be written using sigma notation. Write an expression for ak in terms of k. And find n

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The series 25 + 75 + 125 + ... + 775 + 825 can be written using sigma notation. Write an expression...

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