Asked by Anonymous
If the 2nd term of a geometri progression is 6 and 4Th term is 54 find the 1st term and 5Th term
Answers
Answered by
mathhelper
Just apply the given data to our definitions:
ar = 6
ar^3 = 54
divide the 2nd by the first
ar^3/(ar) = 54/6
r^2 = 9
r = ± 3
go back to ar = 6
if r = 3, 3a = 6, a = 2
if r = -3, -3a = 6, a = -2
5th term = ar^4 = ..... , remember there are 2 cases.
ar = 6
ar^3 = 54
divide the 2nd by the first
ar^3/(ar) = 54/6
r^2 = 9
r = ± 3
go back to ar = 6
if r = 3, 3a = 6, a = 2
if r = -3, -3a = 6, a = -2
5th term = ar^4 = ..... , remember there are 2 cases.
There are no AI answers yet. The ability to request AI answers is coming soon!
Submit Your Answer
We prioritize human answers over AI answers.
If you are human, and you can answer this question, please submit your answer.