Question

Look at the following sequence...
5, 10.5, 22.05, 46.305
If it is a geometric sequence choose the common ratio, if not then choose not geometric

Answer 1

@surjithayer

Answer 2

you need to find the common ratio so compare the ratio of terms

does \[\frac{a_{2}}{a_{1}} = \frac{a_{3}}{a_{2}} = \frac{a_{4}}{a_{3}}=...\]

Answer 3

so if you keep getting the same value, then that is the common ratio...

Answer 4

Which is which? Which is a^2,

Answer 5

@campbell_st

Answer 6

so the sequence is

\[a_{1} ~1st~ term, ~~a_{2} ~ 2nd~term, ~~a_{3} ~ 3rd ~term...... \]

Answer 7

if the ratio of terms is the same, then it is geometric

Answer 8

I got 2.1. So it's a common ratio? @campbell_st