Question

Given the following geometric sequence, find the common ratio. {0.45, 0.9, 1.8, ...}

Answer 1

Answer:

the common ratio is, 2

Step-by-step explanation:

Common ratio for geometric sequences states that the ratio of a term to the previous term.

It is represented by r

Given the sequence:

0.45, 0.9, 1.8, ...

This is a geometric sequence with first term 0.45

Common ration(r) = 2

Since;

$\frac{0.9}{0.45} = 2$,

$\frac{1.8}{0.9} = 2$ and so on

therefore, the common ratio is, 2

Answer 2

0.45 times what=0.90?
seems to be 2
for
$a_n$ and $a_{n+1}$, (1 term and the next)
common ratio=$\frac{a_n}{a_{n+1}}$
0.45 and 0.9
0.9/0.45=2
common ratio is 2