Question
What is the 11th term of the following geometric sequence? Enter a whole number
7/9,-7/3,7,-21,63
7/9,-7/3,7,-21,63
Answers
Damon
a(n+1) = a(n) * -3
a = 7/9
r = -3
a(n) = a r^(n-1)
so
a(11) = (7/9) (-3)^10
= 7 (3)^8
= 45927
a = 7/9
r = -3
a(n) = a r^(n-1)
so
a(11) = (7/9) (-3)^10
= 7 (3)^8
= 45927