Sj
posted by Mahlogonolo
Mathematics......Under number patternsGeometric series If a question goes.determine the expression for the nth term of the following sequence if the a) 4th term is 24 and the 7th term is 192 in a geometric sequence.what formula do i use here?because i don't have the whole sequence?

Reiny
Sj is not a "school subject" , label it Math to have the corresponding tutors look at it
So if this is a GS, then we are given:
ar^3 = 24 and ar^6 = 192
ar^6 / ar^3 = 192/24
r^3 = 8
r = 2
back in ar^3 = 24
8a = 24
a = 3
now you have a and r, and the whole world of geometric sequences is open to you. 
Mahlogonolo
Ok im sorry.When you say ar^3=24 what do u mean? And what does '^' mean?

PsyDAG
Online "^" is used to indicate an exponent, e.g., x^2 = x squared.
Respond to this Question
Similar Questions

Precalc
Find the indicated nth term of the geometric sequence. 7th term a5: 2/81 a9: 2/6561 I know the formula is an= a1 r ^ n1 but I can't figure out how to apply it 
arithmetic
use the geometric mean to find the 7th term in a geometric sequence if the 6th term is 50 and the 8th term is 18 
precalc
Determine whether the sequence is geometric or arithmetic. Then give the general formula for the nth term of the sequence. 6.1, 6.9, 7.7, 8.5, 9.3,... I think it is Geometric, but i don't know how to find the formula 
Maths
1..The first 2 terms of a geometric progression are the same as the first two terms of an arithmetic progression.The first term is 12 and is greater than the second term.The sum of the first 3 terms od the arithmetic progression is … 
math Question
the 5th term in a geometric sequence is 160. The 7th term is 40. What are the possible values of the 6th term of the sequence +70 70 +80 80 
Math
1.) What is the formula for the nth term of the arithmetic sequence that has a common difference of 8 and a first term of 4? 
math Help plz
1.Given a geometric sequence with a_1=6 and r=2/3, write an explicit formula for a_n, the nth term of the sequence. 2.A geometric sequence has a_4=4 and a_5=7. What is a? 
Algebra
I am so lost on these problems. Write a geometric sequence that starts with 3 and has a common ratio of 5. What is the 23rd term in the sequence. Write an arithmetic sequence that has a common difference of 4 and the eighth term is … 
Math
Am I doing this correctly Use the geometric mean to find the 7th term in a geometric sequence if the 6th term is 75 and the 8th term is 48. A) 60*** B) 66 C) 57 D) 51.5 E) 59 F) 68 r^2 = 48/75 = 16/25 r = 4/5 7th term = 75 * 4/5 = … 
algebra1
Which of the following functions represents a geometric sequence?