Posted by **Mimi** on Thursday, May 17, 2012 at 10:38am.

find the arithmetic mean A_n-1_-3.9, A_n+1_=7.1

## Answer this Question

## Related Questions

- math - -Write the arithmetic sequence 21,13,5,-3... in the standard form: a_n= -...
- Calculus - If a_n>0 and a_(n+1) <= a_n, does the alternating series ∑...
- Calculus - If a_n does not equal zero for any n>=1 and ∑a_n converges ...
- Calculus - Find a series ∑a_n for which ∑(a_n)^2 converges but &#...
- Discrete Math - Solve the recurrence relation a_n = -2a_n-1 + 15a_n-2, n ≥...
- Calculus - If a_n >0 and b_n >0 and series ∑ sqrt( (a_n)^2 +(b_n)^2...
- Math Proof - 0<=b_n<=a_n. a) if a_n-->0 then b_n-->0. b) if a_n-->...
- mathematical statistics - Suppose a_n∈ [0,1] and X_n is a sequence of i.i....
- Algebra 2 - Recursion formula for a given population for each interval,n, at a ...
- Algebra - What the general term a_n for the geometric sequence a_1= -5 and a_2= ...