Mandibailey1105 Mandibailey1105

11-05-2017
Mathematics

contestada

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

Respuesta :

BHmohammad BHmohammad

11-05-2017

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

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