answers:
27
9
1/9
1/27
2007-03-23 02:38:46 · 5 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
The formula for the nth term in a GS is
a*r^(n-1)
27*(1/3)^6 = 1/27.
2007-03-23 02:43:30 · answer #1 · answered by peateargryfin 5 · 0⤊ 0⤋
Use the following equation:
an = a1 x r ^ n - 1
here, n is 7
so a7 = 27 x (1/3) ^ ( 7 - 1)
= 27 x ( 1/3 ) ^ 6
= 27 x 1/729
= 1/27
Hope it helps.
2007-03-23 02:49:29 · answer #2 · answered by Farhali 2 · 0⤊ 0⤋
1/27
2007-03-23 02:52:17 · answer #3 · answered by Jon G 2 · 0⤊ 0⤋
an = a1(r^(n-1))
a7 = 27(1/3)^6
= 27/729
= 1/27
2007-03-23 02:45:20 · answer #4 · answered by misterbean 2 · 0⤊ 0⤋
nth term of g.p. = a.r.^(n - 1)
a7 = 27.(1/3)^6 = 27 / (27 x 27) = 1/27
2007-03-23 07:13:13 · answer #5 · answered by Como 7 · 0⤊ 0⤋