## Anikate Group Title Find the sum of the geometric series 6+18+54+... to 6 terms. 2 years ago 2 years ago

1. Anikate

how?

$S_n=\frac{ a(r^n-1) }{ r-1 }$

$a=6,r=3,n=6$

4. DLS

S=a(r^n - 1) / (r - 1) =>6(3^6-1)/5

5. Anikate

so what would u substitute? and where?

6. Anikate

idk

7. DLS

why infinity?when it says 6 terms

8. Anikate

y is a and n=6

9. DLS

a is the 1st term and n=the power which u wrote 6 urself

10. Anikate

what do u mean by that? how did u find 6 fr n?

11. DLS

Find the sum of the geometric series 6+18+54+... to 6 terms. sum of the geometric series 6+18+54+... to 6 terms. geometric series 6+18+54+... to 6 terms. 6+18+54+... to 6 terms. 6 terms.

12. Anikate

oh ok thx