98 Answered Questions for the topic Sequence

Sequence

11/15/16

What's the next 2 terms in the sequence
81,27,9,3,_,_
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Sequence Sequences

09/03/16

What is the next number in this sequence: 2, 7, 26, 101, 400, ?
The possible answers are:   15958006951840 1595 800 695 1840  
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Sequence

08/31/16

Sequence and
in the sequence an the n-th term is defined as (an-1-1)2.if a3=64 then what is the value of a1?  can anybody show me the shortest method to solve this? 
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Sequence Calculus Series

06/27/16

sum to infinity
A ball is thrown vertically upwards from the ground. It rises to a height of 10m and then falls andbounces. After each bounce it rises vertically to 2/3 the height from which it fell. (i) Find... more
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Sequence Math

05/17/16

7,16,9,5,21,16,9,?,1
is it 10 or 13 or 5?  
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Expert Answers •3

05/03/16

Please help me with the proof below!
let 〈xn〉n=1...∞ be a sequence satisfying xn+1=xn-xn-1 for each n.Prove that ∀ n ∈ N, xn+6=xn by induction     Please help me. I'm reviewing for my final and something like this may appear on it.
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02/14/16

AP 1st term=x+1, 2nd term=2x-1, 4th term=2x+5, find x, a, d
AP 1st term=x+1, 2nd term=2x-1, 4th term=2x+5, find x, a, d   Please help me how to find even one of these values. I don't even have the sum of given terms, so I really have no value to progress. 
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02/14/16

Formula nth term series 4,9,16,25
Hello, could you help me find the formula for this series, please? How do I go about it?  4,9,16,25,...I know it starts with adding 5 and adding 2 more with every number, so adding 7 next, then 9,... more
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Sequence

01/21/16

6,22,35,25 what is the next number
I am 65 years old and I can not figure this out.!
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Sequence

11/03/15

3,4,6,9,13,18,24
What is the next number?
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Expert Answers •1

09/22/15

Solve this recurrence relation and find a2 and a3?
We have to recurrence relation an = 2an-1 - an-2. Find a2 and a3 if:   a) a0 = 1 and a1= 1? b) a0 = 0 and a1 = 0?  
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Sequence

07/22/15

findind first number of the sequence
I ve been tasked to find the answer to the question,the number of the sequence is 17,if the second is 3, what is the first number?help Me with the answer and calculations
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07/08/15

Find the first four terms of the recursively defined sequence
a_1= 256, a_(n+1)= √(a_
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Sequence

06/01/15

Find the following sum: 1+2+4+8+...+2^k-1
I need help finding the terms before 2^k-1
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Sequence

05/31/15

Arithmetric sequence
First term of sequence is 3 and the common difference is 5. The nth term is the first term in this sequence >1000. Find value of n.
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04/07/15

For the missing term in the geometric sequence find the possible values
4,?,1/36  
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Expert Answers •1

03/26/15

Use the explicit formula to find the first four terms of the sequence
 an =(-1)n-1(-n-1) enter the terms separated by a comma
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03/26/15

What is the 21sr term in arithmetic sequence in which
a3 is 59 and a7 is 103 enter only the term
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Sequence

03/19/15

If it converges, find the limit
Determine whether the sequence diverges or converges √(7n+11)-√(7n) converges or diverges. If it converges, find the limit.
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01/30/15

Write a formula...
Write a formula for the general term (the nth term) of the geomteric sequence. Then use the formula for an to find a7, the seventh term of the sequence. 3, 15, 75, 375   NOTE: The system tells me... more
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01/30/15

Write a formula
Write a formula for the general term (the nth term) of the geomteric sequence. Then use the formula for an to find a7, the seventh term of the sequence.   3, 15, 75, 375
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01/30/15

write a formula
Write a formula for the general term (the nth term) of the arithmetic sequence. Then use the formula for an to find a30, the 30th term for the sequence.    1, 5, 9, 13, .... an = ?
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01/30/15

Please help solve!
There are two unmarked buckets by a stream.There are two unmarked buckets by a stream. the buckets hold 19 and 8 gallons of water respectively. How can 14 gallons of water be obtained, to take... more
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01/30/15

There are two unmarked buckets by a stream.
There are two unmarked buckets by a stream. the buckets hold 19 and 8 gallons of water respectivelY. how can 14 gallons of water be obtained, to take home? complete the sequence below, the numbers... more
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Sequence

01/08/15

3 6 4 8 6 12 10
What is the next number
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