Asked by summary
The fourth term of an exponential sequence is 192 and its ninth term is 6. Find the common ratio of the sequence
Answers
Answered by
Damon
fourth = 192
fifth = 192*r
sixth 192*r^2
seventh 192* r^3
eighth 192*r^4
ninth 192* r^5 =6
r^5 = 1/32
well I know 2^4 = 16 so 2^5 is 32
r = 1/2
fifth = 192*r
sixth 192*r^2
seventh 192* r^3
eighth 192*r^4
ninth 192* r^5 =6
r^5 = 1/32
well I know 2^4 = 16 so 2^5 is 32
r = 1/2