Question

Can anyone help please?
Find the sum of the finite geometric series using the formula: Sn=a1 (1-r^n)/1-r
3+6+12+24+48+96

Answer 1

Hello @oh_ashhes . Welcome to OpenStudy!

First find r. Do that be dividing one of the terms by the term before it.

Answer 2

r=2

Answer 3

Is the answer 37 4/5?

Answer 4

the answer should be a whole number

Answer 5

Ok I have S6=3(1-2^6)/1-6 so far is that correct?

Answer 6

since you are adding whole numbers

Answer 7

$$
\Large S_6 = 3\frac{(1-2^6)}{(1-2)}
$$

Answer 8

Is the final answer 189?

Answer 9

yes

Answer 10

Thank you so much!