Asked by delight

If 5th term of an exponential sequence is greater than the 4th term by thirteen and half and the 4th term is greater than the 3rd term by 9,find the common ratio and the 1st term
Answered by Damon
Xn = a r^(n-1)

X5 = a r^4
X4 = a r^3
ar^4 -ar^3 = 13.5

X3=a r^2
ar^3-ar^2 = 9 ---> ar^4-ar^3 = 9r
so
13.5 = 9 r

I think you can take it from there.

Answered by Victory
NO
There are no AI answers yet. The ability to request AI answers is coming soon!