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18 articles trouvés pour ce sujet.
Gauss' Addition of whole numbers. 2018-04-30
Brad pose la question :
I found this on your site. Question: what is the sum of the first 100 whole numbers?? Is there a different formula if the numbers begin at a number other than one? For example What is the series I want to add is goes from 7 - 53?
Harley Weston lui répond.
2,006-1-2-3-4-...-48-49-50 2016-09-24
Mimi pose la question :
Compute the following:


Penny Nom lui répond.
The sum of the first 50 terms of an arithmetic progression 2014-07-26
Joshua pose la question :
Hello ...my is Joshua...I'm a grade 11 student...I got a question

Calculate the sum of the first 50 terms of an arithmetic progression: 112:98:84

Penny Nom lui répond.
The sum of all whole numbers from 1 to X 2013-09-06
Tim pose la question :
How do I develop a rule for the sum of all whole numbers from 1 to X when I have no idea how to do this
Penny Nom lui répond.
A wire spiral 2012-01-07
Pinar pose la question :
I am trying to help my daughter with very challenging maths questions which sometimes I get stuck If someone help me with one of them I would appreciate it.

Jane is making a spiral out of wire. She bends the wire after 1 cm, then bends the wire after 2cm, then 3cm and continues in this manner. After 4 bends she used 15 cm of wire For each bend how many cm wire was used? After 6 bends how many cm wire will she have used? How many bends will she have made if she uses 66 cm of wire?

I would appreciate if somebody would help me with this.

Thank you!

Penny Nom lui répond.
The angles in an m-gon and genrealizations 2010-10-16
Michael pose la question :
Hello: In answer to a student's question, someone named Penny from your organization provided a proof that the sum of the interior angles of a triangle in the plane is pi radians (or 180 degrees).

I am interested (and I'm sure many other people would be too) in 3 potential generalizations of this basic fact in plane geometry:

Walter Whiteley lui répond.
The middle term of an arithmetic sequence 2008-12-15
Leigh pose la question :
Find the sum of the first fifteen terms of an arithmetic series if the middle term is 92
Penny Nom lui répond.
An augmented matrix 2007-02-13
Mary pose la question :
I've been trying for quite some time now to figure this out. I have to solve this by using the Gauss-Jordan Method: 3x - y = 15 2x + 3y = 10 Can anyone help me?
Penny Nom and Gabriel Potter lui répond.
What is the sum of the first 100 whole numbers? 2006-05-31
Jo pose la question :
what is the sum of the first 100 whole numbers?
Natasha Glydon, Paul Betts and Penny Nom lui répond.
1+3+5+...+(2n+1) 2004-09-10
Emma pose la question :
Prove that 1+3+5+...+(2n+1)= (n+1)2
Penny Nom lui répond.
The sum of some positive integers 2004-06-07
A student pose la question :
Find the sum of all positive integers not greater than 10000 that are divisible by neither 3 nor 7.
Penny Nom lui répond.
Constructions of polygons 2003-01-03
Garrett pose la question :
Our teacher just finished the constructions unit, and he mentioned briefly about odd sided figures such as pentagons and septagons, only that they're very hard. My question is, how do you draw, with a compass and a straight edge, a pentagon and septagon?
Chris Fisher lui répond.
Sums of evens 2002-09-14
Rosa pose la question :
How do I find a geometric way to easily compute sums of consecutive even numbers 2 + 4 + 6 + ....
Leeanne Boehm and Harley Weston lui répond.
The sum of the first one hundred even numbers 2002-09-10
Arthur pose la question :
What is the sum of the first one hundred even numbers?
Penny Nom lui répond.
Arithmetic progressions 2002-04-24
David pose la question :
I have been searching everywhere for the formula to mathamatical progression.
Penny Nom lui répond.
3, 6, 10, 15, 21 2001-11-29
Patrick pose la question :
we are trying to find the expression to solve for the nth term in the pattern

3, 6, 10, 15, 21

Denis Hanson lui répond.
1+2+3+...+1000 2001-10-01
Louise pose la question :
Find a quick way to add all Intergers (whole Numbers) between 1 and 1000?
Walter Whiteley lui répond.
1 + 2 + 3 + ... + 50 2000-09-14
Vicki Charron pose la question :
How can you calculate the total of the numbers one through fifty, without adding up the individual numbers?
Penny Nom lui répond.



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