Posted by **Vianna** on Saturday, November 4, 2006 at 4:57pm.

Use the geometric sequence of numbers 1, 1/3, 1/9 , 1/27… to find the following:

b) Using the formula for the sum of the first n terms of a geometric series, what is the sum of the first 10 terms? Carry all calculations to 6 decimals on all assignments.

Answer:

Show work in this space.

c) Using the formula for the sum of the first n terms of a geometric series, what is the sum of the first 12 terms? Carry all calculations to 6 decimals on all assignments.

Answer:

Show work in this space.

d) What observation can make about the successive partial sums of this series? In particular, what number does it appear that the sum will always be smaller than?

Answer:

why are you not using the formula?

r=1/3

I will be happy to critique your thinking.

i'm not using the formula because i just do not understand algebra at all...please help this is my last assignment.

Hmmm.

The write out the first 10 or 12 terms and add them.

However, I suspect your teacher expects you to use the Sum formula, as that is what was taught.

Ok bob...can you check and see if i did it right? thank you.

Use the geometric sequence of numbers 1, 1/3, 1/9 , 1/27… to find the following:

a) What is r, the ratio between 2 consecutive terms?

Answer: r = 1/3

Show work in this space. Each term is the previous term divided by 3 or

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