Question

Natalia is writing a recursiye formula to represent the

sequence
8. 12, 18, 27,
What value should she use as the common ratio in the
formula? Write the answer as a decimal rounded to the
tenths place.
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11:13 PM
** 770/2019

Answer 1

3/2

Explanation:

3/2 is the value

Answer 2

1.5

Explanation:

As the common difference is not same for all terms, the given sequence is a geometric sequence

the standard formula for a geometric sequence is:

`a_n=a_1r^(n-1)`

The formula to calculate common ratio is:

`r =   (a_n)/(a_(n-1))`

Dividing the term by previous term

So,

r = 12/8 = 18/12 = 27/18 = 1.5

The value for common ratio will be:

1.5 ..