SOLUTION: a1= 2 r= 3 Formula is Sn = {{{a1*(r^n - 1)/(r - 1)}}} Here n =6, so S6 = {{{2*(3^6 - 1)/(3 - 1)}}} = 728

Algebra ->  Sequences-and-series -> SOLUTION: a1= 2 r= 3 Formula is Sn = {{{a1*(r^n - 1)/(r - 1)}}} Here n =6, so S6 = {{{2*(3^6 - 1)/(3 - 1)}}} = 728      Log On


   

Question 40853This question is from textbook Algebra 2
: a1= 2
r= 3
Formula is Sn = a1%2A%28r%5En+-+1%29%2F%28r+-+1%29
Here n =6, so S6 = 2%2A%283%5E6+-+1%29%2F%283+-+1%29 = 728 This question is from textbook Algebra 2

Answer by psbhowmick(878) About Me  (Show Source):