# Math

posted by .

How would I find the expression of the nth term sequence given the terms of 2, 1, 4/5, 5/7, 6/9 and the expression of the nth term sequence given the terms of 1/2,-1/4,1/8, -1/16?

• Math -

Change the first sequence to ...

2/1; 3/3;4/5; 5/7;6/9;....

On the second, it sure looks like r is -1/2.

## Similar Questions

1. ### Math - Geometry

Please help! Need to find the 6th and nth terms in this sequence - and solve for the rule or process. here's the sequence: 1,3,9,27,81 What is the process or formula to get the nth term in the sequence. Thanks!
2. ### math

the value of the nth term in a sequence of numbers is given by the expression 2n - 3. what is the 8th term in the sequence?
3. ### Maths

Hi, I am working on some Nth problems - can anyone tell me if this is correct :- Nth term sequence is n + 4 are the first three terms 5,6,7, A nth term is 85 - 5n are the first three terms of the sequence 17, 34, 51, A nth term is …
4. ### Pre-Calc/Trig...

The nth term of a geometric sequence is given by an = 1/4(4)^n-1. Write the first five terms of this sequence.
5. ### Calculus 2 - Series

I am so confused on how to do series problems...especially these. How can you tell the pattern and determining the formula for them?
6. ### Math

1.The nth term of a geometric sequence is given by a_n=1/4(4)^n-1 . Write the first five terms of this sequence. 2.The nth term of a a geometric sequence is given by a_n=27(0.1)^n-1 . Write the first five terms of this sequence.
7. ### PreCalculas

The nth term of a a geometric sequence is given by a_n=27(0.1)^n-1 . Write the first five terms of this sequence. Can i get some help
8. ### sequence....help!!!!!

find an expression in terms n of the nth term of the following sequence 5,13,32,69,129,221......help
9. ### maths-sequence need help

if the sequence is 2,15,52,125,246.... find the nth term expression and sum of the nth terms
10. ### maths sequence

if the sequence is 2,15,52,125,246.... find the nth term expression and sum of the nth terms

More Similar Questions