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Adam1994

find the first term of the arithmetic sequence having the data given. an = 48, Sn = 546, n = 26

  • 2 years ago
  • 2 years ago

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  1. saifoo.khan
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    Do you know the formula?

    • 2 years ago
  2. Adam1994
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    ish... not that well. Im just starting this and I just need some examples done.

    • 2 years ago
  3. Dockworker
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    \[\S_{n}=\frac{n}{2}(a_{1}+a_{n})\]

    • 2 years ago
  4. Kreshnik
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    Sum.. \[\LARGE Sn=\frac n2 [2a_1+(n-1)\cdot d]\] \[\LARGE a_n=a_1+(n-1)\cdot d\]

    • 2 years ago
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