Question
Write a formula for the general term (the nth term of each geometric sequence. Then use the formula for $a_{n}$ to find $a_{7},$ the seventh term of the sequence. $$5,-1, \frac{1}{5},-\frac{1}{25}, \dots$$
Step 1
We can do this by dividing the second term by the first term. In this case, we have $-1/5$ divided by $5$, which gives us $-1/5$. Show more…
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