Question

What is the 9th term of the geometric sequence where a1 = –5 and a6 = –5,120?

Answer 1

\[a_{n} = a_{1}*r^{n-1}\]
\[a_{6} = -5120 = -5*r^{6-1}\]
\[r^{5} = \frac{5120}{5} = 1024\]
\[r = 4\]
\[\rightarrow a_{9} = -5*(4)^{9-1}\]

Answer 2

no caculator do u know what it is?

Answer 3

there are calculators everywhere on your computer or online

graphcalc.com