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Anonymous Anonymous
  • 04-10-2014
  • Mathematics
Answered

find the 10th term of the arithmetic sequence that begins with 1/7 and whose common difference is 2/5

Verified Answer :

publius
publius publius
  • 04-10-2014

\(u_{n}= a+(n-1)d\)
\(u_{10}= \frac{1}{7}+(10-1) \frac{2}{5}\)  
\(u_{10}=\frac{1}{7}+9* \frac{2}{5}\)
\(u_{10}= \frac{1}{7}+ \frac{18}{5}\)
\(u_{10}= \frac{5}{35}+ \frac{126}{35}= \frac{131}{35}\)

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