algebra2/trig
posted by JOSEPH .
Write the next term of sequence,and then write the rule for the nth term.
1)1,8,27,64,....125
the nth is n
2) 3,8,15, 24,.....35
the nth is
Can you help me and correct ? thank you

algebra2/trig 
Reiny
1) looks like you are dealing with the cubes
so term(n) = n^3
2) did you notice that each term is one less than a perfect square?
e.g.
3 = 2^2  1 term(1)
8 = 3^2 1  term(2)
15 = 4^2 1
24 = 5^2  1
35 = 6^2  1
so term(n) = (n+1)^2 1
Respond to this Question
Similar Questions

math
help me with sequences problem.So if the sequence is 2,5,10,17,26 +3 +5 +7 +9 1st difference +2 +2 +2 2nd difference then the nth term can be worked out by writing out : n 1 2 3 4 n squared 1 4 9 16 original sequence 2 5 10 17 nth … 
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! 
Math
For the sequence, describe the pattern, write the next term, and write a rule for the nth term. 2/3,4/4,6/5,8/6,... 
Alg2
Hi! I'd like to know how to write the next term in the sentence & write a rule for the nth term. 1) 2/3, 3/6, 4/9, 5/12... I know the next term is 6/15 but I don't know how to write the rule for the nth term... 2) 1/3, 1, 5/3, 7/3,... … 
algebra 2/trig
Write the next term of sequence,and then write the rule for the nth term. 1)1,8,27,64,....125 the nth is 2) 3,8,15, 24,.....35 the nth is Can you help me and correct ? 
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 … 
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? 
Math
Look for a pattern and find the next two numbers in the sequence and then write a general version of the nth term. 1 2 3 4 5 6 7 8 n 18 30 42 54 66 78 I can recognize the pattern as being + 12 so under 7 my answer would be 90 and under … 
mathssequence need help
if the sequence is 2,15,52,125,246.... find the nth term expression and sum of the nth terms 
maths sequence
if the sequence is 2,15,52,125,246.... find the nth term expression and sum of the nth terms