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Find the 10th term of the following geometric sequence 5/81, 5/27, 5/9, 5/3

Find the 10th term of the following geometric sequence 5/81, 5/27, 5/9, 5/3
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Find the 10th term of the following geometric sequence 5/81, 5/27, 5/9, 5/3

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User Ib
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8.0k points

1 Answer

6 votes
an= a1*r^(n-1)
a1= 5/81
r=5/27÷5/81 = 3
n=8

a8=(5/81)*3^(8-1)
=(5/81)*3^7
=5*3^3
=135
answered
User Gbaor
by
8.3k points
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