SOLUTION: OK so say you had a quadratic sequence that represented pascales triangle so the first row would be 1 cube and the second row would be 4 cubes the third row would be 9 cubes and so

Question 53970: OK so say you had a quadratic sequence that represented pascales triangle so the first row would be 1 cube and the second row would be 4 cubes the third row would be 9 cubes and so on there for the sequence being 1,4,9,16,25.... there for the eqasion would be tn= n^2. Then you would want to find the 100th row which would be 100^2 but the question is how many blocks would it take to build up to the 100th row so its the sum of the sequence or pyrimd up to t100. Now you could just add up all the terms in the sequence but i would like to know the equaion for finding the sum of this term, and how you would get that equasion. If you could e-mail me ASAP that wouls be greatly appreciated thanks for the help
FELICIA
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
There is a sum-of-squares formula.
1^2+2^2+3^2+ ... + n^2 = [n(n=1)(2n+1)]/6
Try it with n=100
Cheers,
Stan H.
RELATED QUESTIONS
A theater has 49 seats in the first row, 53 seats in the second row, 57 seats in the... (answered by stanbon)

A theater has 45 seats in the first row, 49 in the second row, 53 seats in the third row... (answered by josmiceli)

Can someone Please help me solve this problem, Thank You very much!!! A theater has 41 (answered by ramkikk66)

Hi ok so here's my problem: How many ounces of a 15% acid solution and a 40% acid... (answered by josmiceli)

I'm trying to help my friend who is in Algebra 2 with her homework. I took Algebra 2 last (answered by stanbon)

PLease help me with this problem A piece of cloth measures 2 yards, 1 foot, and 4... (answered by smartmathgirl)

If you have a 30 digit number and 0-9 are represented equally so there are three of each... (answered by stanbon)

1. A theatre has 49 seats, 53 in the second row, 57 seats in the third row and so on.... (answered by Theo)

1) There are 10 students participating in a spelling bee. In how many ways can the... (answered by Alan3354)