6. Libby and Liz are trying to find the 9th term of the geometric sequence -5, 10, –20, . Their work is shown below. Libby 10 == -2 Liz 20 r = -5 10 -2 ag = -5(-2)°-1 = -5(512) ag = -5(-2)°-1 = -5(-256) = -2560 = 1280 Determine if either Libby or Liz is correct. Justify your answer.

Q: Use an=a1+(n-1)d and gn=g1re-1 to find: the 59th term of the arithmetic sequence 20, 16, 12, 8 . .…

A: Our aim is to find the 59th term of the arithmetic sequence given below:-20,16,12,8.....        -(i)

Q: Write a recursive formula for the sequence 15, 26, 48, 92, 180, .... Then find the next term.

A:

Q: The first term ao of a geometric sequence is -10, and the common ratio r is -3. What is the…

A: The formula for the nth term of a geometric sequence is given by an=a0rn-1, where a0 is the first…

Q: Find the first 4 terms, a10, and a,5 of the sequeñce with the following nth term. a = |(Simplify…

A: The sequence                        an=nn-3, n≥4 then we have to find the first 4 terms and a10 and…

Q: determine the closed formula that generates the sequence 1,2,4,8,16,32

A: The given sequence in the question is:

Q: The sequence is defined recursively. Write the first four terms. a₁ = 5; anan-1-5 A. a₁ =5, a₂ =2,…

A:

Q: A sequence starts with 128, and every term value in the sequence is a product of the previous term…

A: Using previous sequence,

Q: 口 2. Determine the common difference of the arithmetic sequence 3m-2n, 4m-n, 5m, 6m+n,…... m+n m-n…

A: Please see the below answer.

Q: In an arithmetic sequence where the first three terms are 3, 7, 11, find the sum of the first 100…

A: We know, in an arithmetic sequence, the sum of n terms: Sn = (n/2)* [2a + (n-1)*d] Where, a = first…

Q: 5. Calculate the formula for the geometric sequence 4000, 1000, 250, 62.5,

A:

Q: Write the first five terms of the sequence defined recursively. a₁ = 5, ak+1 = 4(a-3) ak+1 a₁ az 33…

A: We will find the required.

Q: recursively defined sequence

A:

Q: Suppose you have the sequence 4, 1, -2, -5,.. . Find the sum of the first 20 even terms.

A:

Q: Find the 60th term of the sequence 5, -2,-9,-16,... O a-478 O b.non of them

A: Here given as 5, -2, -9, -16, ...... The first term of sequence is a1=5, Also the common difference…

Q: Write the first five terms of the sequence defined by the recursive formula: an= -3an-1 +5 If an =…

A: given an=-3an-1+5if an=2

Q: 2. How many terms are in the sequence -13, -1, 11, 23, ... 419.

A: