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	Énigme		2008-04-06
		Frédérique pose la question : Tu es dans une pièce ou il y a 3 interrupteurs reliés a 3 lumières dans une autre pièce que tu ne vois pas.Comment fais-tu pour savoir a quelle lumière chacun des interrupteurs est relié si tu ne peux aller voir dans l'autre pièce qu'une seule fois!Merci a l'avance!!! Claude Tardif lui répond.
	Le terme suivants		2008-03-30
		jacques pose la question : voici 2 suites. Explique la logique qui permet de passer d'un terme a l'autre dans chacune des suites et trouve le terme suivants. 1)douze,5,trente,6,neuf,4,seize,... no.2) 26,vx,18,dt,36,tx,51,... Maxime Fortier Bourque lui répond.
	La longueur des segments formant un triangle		1999-10-05
		Michel Provencher pose la question : Connaissant la longueur des segments formant un triangle,comment détermine-t-on chacun de ses angles si: il S'agit d'un triangle rectangle Sachant que la somme des angles d'un triangle est de 180 degrés et sachant par conséquant qu'un des angle est de 90 degrés (triangle rectangle) il reste donc, 90 degrés à partager entre les 2 angles restant. Si les 2 segments formant l'angle droit sont de même longueur on obtient un angle de 45 degrés pour les angles restant soit 1/2 angle droit ce qui ne me pose évidement aucun problème. Quel relation, S'il y en a une, y a t-il entre la longueur de ces 2 segments et les angles restants. il S'agit d'un triangle quelconque Claude Tardif lui répond.
	Sigma notation		2019-12-04
		Kenneth pose la question : What would be used for the top and bottom indices for the sigma sign in my example shown below? If the amounts were 1 + 2 + 3, the top index would be 3 and the bottom would be i = 1, but if the amounts are 1 + 2 + 4, or 1 + 0.05 + 1/3, what would the indices be since these amounts are in an uneven pattern. I thank you for your reply and explanation Harley Weston lui répond.
	(3d) Whether line segment intersects triangle		2019-04-13
		rj pose la question : Well hello, Lets say I have a triangle, Not any ordinary triangle, but a triangle that is represented in 3 dimensions. I also have a line segment. Lets say that this triangle has points A(0,0,0), B(1,0,0), C(0,1,1) And the line segment has points D(0,1/2,0), E(1,1/2,1) In what way can I find if the line segment and triangle intersect? Their intersection point? I don't prefer matrices, because they don't make any sense, but ... if that's the only way to solve this, then do what's necessary. Thank you in advance. Penny Nom lui répond.
	The volume of a slab		2017-01-21
		Russell pose la question : Working with a segment of a circle. The O.D. is 3.440" the length of the chord is 3.130 I need information on the volume of the largest area. I would like to know (in thousands of an inch) how tall would the largest area need to be to equal .1143 cubic inches If you need more info I can send it Thanks in advance p lui répond.
	A line segment of length root 5		2014-12-15
		angela pose la question : On the dot grid below, draw and label a line segment with length square root 5 the dot grid is 8 by 10 Penny Nom lui répond.
	Forming a triangle from 3 line segments		2012-03-15
		rustom pose la question : A point X is selected at random from a line segment AB with midpoint 0. Find the probability that the line segments AX, XB, and A0 can form a triangle. Penny Nom lui répond.
	Augmented matrix		2011-12-14
		Britney pose la question : Write Augmented matrix and use row reduction to solve. I need major help with this problem! Tomorrow is my semester test and I have no idea how to do this. 2x+5y=8 y-x=10 Robert Dawson lui répond.
	Two line segments in the plane		2011-08-15
		Tim pose la question : For this problem I actually have tried to visualise the image in my head many times. This question makes my head spin. Four points lie in a plane. They are partitioned into two pairs so that the sum of the lengths of the segments joining the points of each pair has the minimal possible value. Prove that these segments have no common points. Chris Fisher lui répond.
	Line segments		2011-01-04
		Izsak pose la question : What is the formula to find the number of segments that can be named by a given number of points on a line? Penny Nom lui répond.
	Can a line segment curve over two planes?		2010-02-14
		Graham pose la question : I am working on a math fair project. Can a line segment curve over two planes? Such as, if I had a three dimensional L bracket and I drew a line segment on it with a marker starting on the bottom of the L and had it curve around the corner and up the top, would it still be considered one line segment? Or is that two line segments? Is there a rule that a line segment can only occupy one plane? Thank you. Graham Chris Fisher lui répond.
	Segments of a ring gasket		2009-09-20
		Robert pose la question : I am in the process of making an Excel spreadsheet in which our sales team just needs to enter the outside diameter, inside diameter, and number of segments to price ring gaskets that are too big to fit on a sheet of material and need to be cut into segments. With your help I was able to create a spread sheet that can calculate the Chord lengths, and Segment height on a single gasket segment. I am now stuck trying to come up with a formula to figure out the height of the second segment when it is stacked on the first segment, then use it to add more depending on the quantity of segments needed. I have an illustration below showing 2 segments (of a gasket that was segmented into 4 pieces) stacked together. I need to find a formula to get the dimension from "A" to "B". Harley Weston lui répond.
	2+6+12+20+30+42		2009-04-24
		fredy pose la question : what is the sigma notation for the series 2+6+12+20+30+42? Stephen La Rocque lui répond.
	A plane cuts a line segment		2009-03-17
		Manis pose la question : Find the ratio in which the line joining (2,4,16) and (3,5,-4) is divided by the plane 2x-3y+z+6=0. Robert Dawson lui répond.
	A linear system		2009-03-13
		Rasanga pose la question : Use the row echelon form of the augmented matrix to solve the following linear system. X1+2X2+X4=6 X3+6X4=7 X5=1 Harley Weston lui répond.
	Augmented matrix: independent, dependent, or inconsistent?		2009-02-23
		Anna pose la question : Perform row operations on the augmented matrix as far as necessary to determine whether the system is independent, dependent, or inconsistent. x + y + z = 11 x - y + 3z = 5 2x + 2y + 2z = 15 Harley Weston lui répond.
	Congruent line segments		2009-02-05
		casie pose la question : marica drew one-line segment on a graph with endpoint of (0,9) and (0,4). she drew another line segment with endpoints (1,1) and (6,1). are the line segment congruent?explain Penny Nom lui répond.
	Segments of a sphere		2009-01-16
		Herman pose la question : How do I solve for a segment of a sphere so that the orange peel or pie shaped section is converted to a flat surface with dimensions. I form large diameter domes, elliptical and sphere heads on a press. I enter the diameter say 30 feet with two segments above and below the equator and the total number of segment around the circumference at say 18 so the widest part of the pie shaped section will fit my press. How do I take the upper or lower course above or below the equator and figure the height of the orange peel shape, the chord length at top and bottom, and solve for the right angle at 2 degree increments down the arc length of the pieces so I can layout the flat plates prior to pressing. Thanks for your help. Robert Dawson lui répond.
	Converting grams to milliliters		2009-01-04
		Faiza pose la question : I was looking for how to convert grams into mL and I read on this site to convert one to the other you need to know what substance you are measuring. so if I am measuring sugar or any of the baking ingredient like flour how do I convert them from grams to mL is there a simple method I can use to do that? Penny Nom lui répond.
	The midpoint o a line segment		2008-11-15
		Jane pose la question : The vertices of a triangle are at (1,7), (6,-1) and (0,3). Find the coordinates of the midpoints of the sides. Penny Nom lui répond.
	Using the augmented matrix		2008-10-17
		Karlena pose la question : I am supposed to write the augmented matrix of the system and use the matrix method to solve the system. I must show my work algebraically x+y+2z=30 2x+3y+2z=53 x+2y+3z=47 Harley Weston lui répond.
	A linear system		2008-08-23
		dipesh pose la question : consider the system of equations x-6y+2z=5 2x-9y-z=14 4x+12y-3z=19 by reducing the augm matrix to row echelon form, find the solution to the equation. leaving the first two equations the third is changed to -3x+6y+14z=-31 show the equations have infinitely many solutions and give a general formula for them Penny Nom lui répond.
	The midpoints of the sides of a quadrilateral		2008-07-22
		JOEL pose la question : A QUADRILATERAL A,B,C,D HAS THE CO -ORDINATE [2,5],[8,7],[10,3]&[0,1] RESPECTIVLY [B,E,G,H] ARE THE MID POINTS OF THE SIDES AB,BC,CD&DA RESPECTIVLY FIND THE MID POINTS OF [FG]&[FH] Penny Nom lui répond.
	A reflected line segment		2008-07-14
		Peter pose la question : Segment AB has endpoints A(-1,2) and (3,1). Segment AB is reflected over the y-axis such that A becomes A' and B becomes B'. What is the positive difference between the lengths of segment AA' and segment BB'? Janice Cotcher lui répond.
	A large concrete shape		2008-01-16
		Keith pose la question : what is the cubic yards of an area that is not a perfect 1/4 circle? The dimensions are 100ft. x 60ft. x 125ft. curcumferal arch x 3ft. depth? Stephen La Rocque lui répond.
	Sigma notation		2008-01-06
		jamelia pose la question : what is this word problem in sigma style i am so lost at this point my first time ever attempting this subject 1+2+3+4+5 Penny Nom lui répond.
	Animals for sale		2007-12-09
		Marion pose la question : This question has come up and I know the answer and the equation, but how do you solve this? Please share the proof. cows=$10, pigs=$3, chickens=$.50 In any combination buy 100 animals with $100. Leeanne Boehm lui répond.
	An augmented matrix		2007-11-29
		Beth pose la question : I am having troubles fiinding this augnmented matrix. I know how to do it but everytime i do it it get a different answer and its not the right answer. Could you help me to make sure I do it right? Here is the problem: 4x - 3y = 5 2x +9y = 6 Harley Weston lui répond.
	Dividing a segment into 3 congruent parts		2007-10-30
		Carolyn pose la question : I am doing construction. I have a line segment drawn. I need to divide a segment into 3 congruent part. How do I do that? Penny Nom lui répond.
	Segments on a line		2007-09-10
		Cathy pose la question : This question was on my daughter's geometry assignment. Write a general rule of formula for finding the number of segments that can be named by a given number of points on a line. For example, 2 points on a line = 1 line segment; 3 points on a line = 3 segments; 5 points on a line = 10 segments. Penny Nom lui répond.
	Standard Deviation		2007-06-13
		Adrian pose la question : If you are told that the mean salary of a certain group of workers is $30,000 with a standard deviation of $4000, what proportion of workers earn over $38,000? What proportion of workers earn less than $18,000? Assume the distribution of wages is normal. Stephen La Rocque lui répond.
	Water tank volume		2007-05-29
		Cecelia pose la question : I HAVE A SEMI CIRCULAR TANK AGAINST A WALL MEASURING 6'10" ACROSS THE WIDEST PART AND 3' FROM THE WALL TO THE FRONT OF THE TANK. THE DEPTH IS 14". PLEASE HELP ME TO CALCULATE THE VOLUME OF WATER IN THE TANK. Stephen La Rocque 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.
	Line segments on dot paper		2007-01-21
		Khaori pose la question : The three line segments below are drawn on centimeter dot paper. a. Find the length of each segment to the nearest ten-thousandth of a centimeter. b. Could these line segments be arranged to form a triangle? If no, explain why or why not. If yes, answer this question: could they form a right triangle? Explain why or why not. Penny Nom lui répond.
	Sigma notation		2006-12-05
		Marie pose la question : how do i get this in sigma notation...i only need an explanation 1^2 + (2+3)^2 + (4+5+6)^2 + (7+8+9+10)^2.... Penny Nom lui répond.
	How many line segments are necessary?		2006-10-04
		Varun pose la question : If you place 35 points on a piece of paper so that no three are collinear, how many line segments are necessary to connect each point to all the others? Stephen La Rocque lui répond.
	The area of part of a circle		2006-05-29
		Larry pose la question : need to find area of a circle between a given line (cord) to the circumference of the circle (see attachment). I often review blue prints of homes and many times have to know the area the home. Stephen La Rocque and Penny Nom lui répond.
	A line segment connecting two vertices of a polygon		2005-02-02
		James pose la question : What is a line segment (not a side) connecting two vertices of a polygon called? Penny Nom lui répond.
	The radius of a circle		2004-08-24
		Peter pose la question : If you slice any circle with a line, and call the distance of the line between intersections the "y" length and the perpendicular length to the shorter side of the curve the "x" length, what is the resulting equation for the radius? Penny Nom lui répond.
	Row echelon form		2004-07-24
		Michael pose la question : My name is Michael and I'm in the 11th grade. I have a Math question that I can't solve. The problem is system of equations that I need to do in augmented matrix form, find the row echelon form, and solve it by using back substitution. 2x + 3y + 7z =13 3x + 2y - 5z = -22 5x+ 7y - 3z = -28 Penny Nom lui répond.
	Augmented matrix		2002-12-31
		Michelle pose la question : I am trying to augment a matrix so that i can find the values of the variables a, b, and c. For the life of me i can't find a solution to the matrix: 3 -5 2 ' 22 2 3 -1 ' -9 4 3 3 ' 1 I thank you for your help, Michelle Penny Nom lui répond.
	An augmented matrix		2002-04-20
		A student pose la question : Hi my math teacher asked us to solve an augmented matrix. I am in twelfth grade and need help. The book we are working on is college algebra. Here it is a+2b+c=0 2a+5b+4c=-1 a-b-9c=-5 Penny Nom lui répond.
	Sigma		2001-03-31
		A student pose la question : What does the Sigma symbol mean in mathematics? Penny Nom lui répond.
	Partitioning of an arbitrary line segment		2001-02-08
		David pose la question : Did Euclid's Geometry include a construction for the regular partitioning of an arbitrary line segment? Chris Fisher lui répond.
	A system of equations in five unknowns		2000-03-20
		Will pose la question : I have been having some problem with the following question for some time. I would appreciate any help on solving the problem or a solution. Q: Assume that a system of equations in the unknowns x1, x2, x3, x4 and x5 when converted to row echelon form gives . . . Penny Nom lui répond.

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