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Arturiano [62]
3 years ago
9

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

Mathematics
1 answer:
babunello [35]3 years ago
7 0
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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