Asked by Anonymous
The first term of a geometric sequence is 9 and the common ratio is -1 over 3. find the fourth term
Answers
Answered by
Reiny
use your definitions
fourth term = ar^3
= 9(-1/3)^3
= 9(-1/27)
= -1/3
or
simply list the first 4 terms to see the 4th term
9, -3, 1, -1/3, ...
fourth term = ar^3
= 9(-1/3)^3
= 9(-1/27)
= -1/3
or
simply list the first 4 terms to see the 4th term
9, -3, 1, -1/3, ...
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