SOLUTION: the second term of the geometric series is 2 and 12th term is 1/256 then the first term is? A)4 B)2 C)1 D)8

Question 919168: the second term of the geometric series is 2 and 12th term is 1/256 then the first term is?
A)4
B)2
C)1
D)8
Answer by MathLover1(20850) (Show Source): You can put this solution on YOUR website!
given:
the second term of the geometric series is and 12th term is then the first term is
Form:
----------------------

Divide a(12) by a(2) to solve for "":

or proximately

or

go to , plug in and solve for

answer: A)

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