Question

Find the sum of the geometric series with

Answer 1

Is previous q solved ?

Answer 2

yeah i got it

Answer 3

ok sounds good :)

Answer 4

Same formula.

Answer 5

this oneee ? Sn=a1(1-rn)/1-r

Answer 6

yes!

Answer 7

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

Answer 8

you just need to plug things

Answer 9

\(a_1 = 343\)

\(r = -\frac{1}{7}\)

\(n=4\)

Answer 10

i got 343/6

Answer 11

try again

Answer 12

1/6

Answer 13

try again

Answer 14

http://www.wolframalpha.com/input/?i=343%28%281-%28-1%2F7%29%5E4%29%2F%281--1%2F7%29%29

Answer 15

oh wow i typed it wronggg

Answer 16

i thought so :)