A geometric sequence has these properties: a^1=4 a^n= 1/2a^n-1 What is term a7 of this sequence? A)1/14 B) 1/8 C) 1/16 D) 1/12 Thank you

asked May 7, 2018 189k views

4 votes

A geometric sequence has these properties: a^1=4

a^n= 1/2a^n-1

What is term a7

of this sequence?

A)1/14

B) 1/8

C) 1/16

D) 1/12

Thank you

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5 votes

a7 = 4 * 1/2^(7 - 1)
a7 = 4 * (1/2)^6
a7 = 4 * 1/64
a7 = 4/64 reduces to 1/16

RobbeM answered May 14, 2018

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