The second term of a geometric sequence is 6. The common ratio of the sequence is two-thirds. Write the first five terms of the sequence and write a rule for the sequence.

Question

asked Mar 2, 2019 45.5k views

1 Answer

Paramasivan · Answer 1 · 2019-03-09T09:41:10+0000

a2 = 6 = a1*(2/3)
a1 = 6/(2/3) = 9

The rule for the sequence is
.. an = 9*(2/3)^(n -1)

The first 5 terms are
.. 9, 6, 4, 8/3, 16/9