Find the sum of the first 9 terms in the following geometric series. Do not round your answer. 64+32+16+...

127.75

Step-by-step explanation:

The sum of first "n" terms of a geometric series is given by the formula:

Where

a is the first term

n is the number of term

r is the common ratio

The first term is 64, so

a = 64

We want first 9 term's sum, so

n = 9

To get common ratio, we divide 2nd term by 1st term, so

32/64 = 1/2

r = 1/2

Now, substituting in formula we get our

The sum of the first 9 terms of this geometric series is 127.75

c

step-by-step explanation: