Question

can someone please find the sum of the geometric series with a=1, r=2, and n=8? please and thank you!

Answer 1

u will get the formula here, just put in values.
Tutorial on AP,GP,HP.
http://openstudy.com/study#/updates/503bb2a0e4b007f9003103b0

Answer 2

\(\huge S_n=a_1\frac{(r^n-1)}{(r-1)}\)

Answer 3

so i do s8=(1)*(2^8-1)/(2-1)?

Answer 4

yes, which is 2^8-1

Answer 5

so i do to 2^7 then subtract it by 1?

Answer 6

u do 2^8, then subtract 1

Answer 7

so its 255

Answer 8

yup

Answer 9

u sure?

Answer 10

yup

Answer 11

thx

Answer 12

welcome :)