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4, 6, 9, ... Find the 8th term.

4, 6, 9, ... Find the 8th term.
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21 votes
4, 6, 9, ...
Find the 8th term.

User Wwli
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1 Answer

4 votes

Answer:

Explanation:


\text{This is a geometric sequence as dividing any term by the previous term is constant, called the common ratio. A geometric sequence has the form }a_n=ar^((n-1)) \text{ where }a_n=n^(th)\ term,\ a=initial\ value,\ r=common\ ratio.\\ \\ r=6/4=9/6=1.5,\ a=4\\ \\ a_n=4(1.5^((n-1))\\ \\ a_8=4(1.5^7)\\ \\ a_n=68.34375

User Arunbh Yashaswi
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