What's the 6th term in a sequence that starts with -7.5 and has a common ratio of 9?

1 answer:

6 0

$\bf n^{th}\textit{ term of a geometric sequence}\\\\
a_n=a_1\cdot r^{n-1}\qquad 
\begin{cases}
n=n^{th}\ term\\
a_1=\textit{first term's value}\\
r=\textit{common ratio}\\
----------\\
a_1=-7.5\\
r=9\\
n=6
\end{cases}\implies a_6=-7.5\cdot 9^{6-1}$

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Required

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