anonymous
  • anonymous
find the first term of the arithmetic sequence having the data given. an = 48, Sn = 546, n = 26
Mathematics
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SOLVED
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schrodinger
  • schrodinger
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saifoo.khan
  • saifoo.khan
Do you know the formula?
anonymous
  • anonymous
ish... not that well. Im just starting this and I just need some examples done.
anonymous
  • anonymous
\[\S_{n}=\frac{n}{2}(a_{1}+a_{n})\]

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

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