anonymous one year ago Find the 6th partial sum of

1. anonymous

2. Nnesha

formula to find sum $\huge\rm S_n = \frac{ a_1(1-r^n) }{ 1-r}$ where a_1 = first term n= total number of terms r= common ratio

3. anonymous

how do i know what those are?

4. Nnesha

|dw:1439764479981:dw| r= ratio a_1 is first term and terms start from 1 to 6

5. anonymous

thank you!

6. Nnesha

my pleasure :=)