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	Combien de bonds aura-t-il besoin		2012-04-10
		zachary pose la question : Un lapin fait toujours un bond de 3m suivi d'un bond de 5m. S'il maintient ce rythme de combien de bonds aura-t-il besoin pour franchir une distance de 584m ?? Claude Tardif lui répond.
	Une piscine		2009-11-04
		kemayou pose la question : Dans un de ces problèmes,ma fille se trouve face à cette question,et je ne parviens pas à l'aider,pourriez-vous nous donner un petit coup de pouce? Voici l'énoncé:Un jardin a 22m de long et 8m de large.Au centre du jardin,on a fait construire une piscine dont le périmètre est de 44m.La surface restante est couverte de gazon. La question est :exprimer en fonction de x la longueur de cette piscine. Dans l'attente de votre réponse,recevez nos salutations distinguées. Merci.Mme kemayou Claude Tardif lui répond.
	Un empilement de spheres		2002-04-16
		Sébastien pose la question : Lorsque j'etais encore a l'universite je me souviens qu'un prof nous avez dit, sans le demontrer (ce n'est pas bien du tout de sa part) que l'espace minimal qui existe dans un empilement de spheres est de l'ordre de 26% Voici plusieurs jours que je cherche a resoudre ce probleme de geometrie, et je n'arrive meme pas a trouver comment l'aborder. Claude Tardif lui répond.
	Recherhce sur pi et exponentielle		2001-03-17
		Cyril pose la question : étudiant a la fac de sciences de montpellier je cherche des informations concernant la demonstration suivante: "comment prouver que pi et exponentielle sont irrationnels?" Claude Tardif lui répond.
	Calculer la hauteur de chute de cette pierre		2000-12-16
		Marcus pose la question : Une pierre tombe au fond d'un puit, à 5 secondes on entend un son (de la pierre). Calculer la hauteur de chute de cette pierre en tenant compte de la vitesse du son = 340m.s-1 Il faut savoir que pour la chute libre v= g.t ; h = 1/2 g.t2 ; v = 2g.h g intensité du champs de pesanteur = 10 ; h hauteur de chute. Claude tardif lui répond.
	logarithme neperien		1999-11-10
		Louise Kieffer pose la question : D'où provient la valeur e ( 2,7....) des logarithmes népériens ? Claude Tardif lui répond.
	sec(pi/12)		2022-03-23
		Diana pose la question : Please help me find the exact value of the following trigonometric expression: sec(pi/12). Thanks! Harley Weston lui répond.
	A 50:1 ratio in a pint		2020-05-22
		Steve pose la question : How much oil do I need to put in a pint if it's 50:1 ratio Harley Weston lui répond.
	Gravel for a French Drain		2020-04-17
		Ray pose la question : Hello, ** I am wanting to add 2 French Drain's in my yard. The 1st drain will be 25 ft. long, 8 in wide and 18 in deep. The pipe I'm using is 4in. in diameter. I'm trying to figure out how many yards of clean gravel I will need for this project? ** The 2nd French Drain will be 100 ft in Length, 10in wide and 18 in deep. I will also be using the 4in in diameter pipe for this drain. I am needing to see how many yards of clean gravel, I'll need for this drain? Any assistance would be greatly appreciated!! Thank you!! Harley Weston lui répond.
	Odds		2019-12-16
		Craig pose la question : I’d like to know what are the odds of a lotto machine giving out a specific 4 digit number as a quick pick? I know there are 10,000 possible 4 digit combinations. So let’s say the number is 3587 what are the odds the lotto machine spits it out EXACTLY that way on a quick pick? Penny Nom lui répond.
	Two people are clapping their hands		2019-12-06
		Yukti pose la question : Two people are clapping their hands, but with different frequencies. Ramya claps her hands 17 times per 3 minutes, and Kumar claps his hands 31 times per 5 minutes. They start clapping at the same time. How many times does each one clap before they clap together at the same time again? Penny Nom lui répond.
	The volume of a pile of dirt		2019-04-01
		Genevieve pose la question : We have a pile of dirt approximately 6 feet high by 15 feet wide by 80 feet long. We need to know how many cubic yards of dirt are in this pile. Thank you Harley Weston lui répond.
	Percentages		2019-03-30
		Mari pose la question : I am trying to find out what percentage of our worlds population does the youtuber Pewdiepie have for subscribers? So he has 91 million subscribers and there are roughly 7.53 Billion people in the world. So what percent of our worlds population does Pewdiepie have for subscribers? Am I asking this correctly? I am just curious for marketing reasons and how much of the worlds market share does Pewdiepie have for his youtube channel? I just do not know how to set up the problem to find the answer? Penny Nom lui répond.
	The volume of water in a pipe		2019-03-21
		Abati pose la question : How can I calculate the volume of water in a pipe with below details; Pipe diameter - 6 inches Length of pipe - 127meters Penny Nom lui répond.
	Slope and percentage		2019-03-19
		Tom pose la question : I need a slope of 2 Inches every 30 feet what is the percentage to put on my pipe lazer. thank you Penny Nom lui répond.
	Two intersecting tubes		2018-08-15
		Tommy pose la question : Hi, I am trying to determine a mathematical model for two metal tubes joining at various degrees for weld. For instance, if I am trying to join the end of a tube to the side of another at a 90 degree angle, it will be a simple profile cut out of the joining tube. Where it gets tricky is if you want to join the new tube at a given angle. It would be very helpful if you could give insight as to how I can solve this problem or an equation I could work off of. Thanks for the help!! Edward Doolittle lui répond.
	Two spinners		2018-08-13
		Atina pose la question : A spinner has four equal sectors and a number is written on each sector; 1, 2, 3 and 4. A two-digit number is formed by spinning two times. The number on the first spinning makes the first digit and the number on the second spinning makes the second digit. For example, 2 on the first spinning and 1 on the second spinning make the number 21. (a) Give the sample space S for the experiment. (b) Consider the following events : E = odd number; F = number smaller than 35; G = prime number. Give the subset of outcomes in S that defines each of the events E, F, and G. (c) Describe the following events in terms of E, F, and G and find the probabilities for the events. • getting an even integer less than 35. • getting an odd number or an prime. • getting an even number greater than or equal to 35 that is a prime number. • an odd number smaller than 35 that is not a prime number. (d) Are E and F mutually exclusive events? Give a reason for your answer. Penny Nom lui répond.
	Taking 6 pills		2018-05-29
		Dave pose la question : My motives are simple, I want to get revenge on my brother who, unbeknown to me, repeatedly cheated when we played on-line Scrabble! Can you help? - he has posed this question knowing that I'll struggle to get the solution. Question: He is taking 6 pills a day, if he takes the pills in a different order each day, how long will it be before he takes the pills in the same order on the same date again? I think leap years might come in to it! Will I confess to using you guys? - I'll think about that one. Penny Nom lui répond.
	The number of truckloads to fill a hole		2017-06-18
		Jennifer pose la question : How many full size truck bed pickup loads do in need to get to fill a hole that is 18' x 30' that is 4" deep? Penny Nom lui répond.
	3rd Grade math problem		2017-05-30
		Angela pose la question : Following is a problem from my 3rd grader's homework assignment: Solve. Draw a diagram to represent the situation. Rachel has 20 one-inch beads. She wants to use all of them to make a square picture frame. What will be the length of each side? Find Perimeter, Area, and Side Length Penny Nom lui répond.
	A function which is onto but not one-to-one		2017-04-16
		Avinash pose la question : Define a function f(x):N-->N which is onto but not one-one.Where N is set of natural numbers. Penny Nom lui répond.
	Covering the ceiling of a garage		2017-02-20
		DeAnna pose la question : I am trying to drape a 15 x 30 garage with yards of fabric. If the yard of fabric is 60 inches wide, would 10 1/4 yards be enough for my space? Penny Nom lui répond.
	A pie chart		2016-12-05
		vickie pose la question : Determine the central angle needed to form a pie chart for the following housing characteristic data: 63% owner occupied, 27% renter occupied, and 10% vacant Penny Nom lui répond.
	Acres and miles		2016-11-30
		Carolyn pose la question : If I am running a pipeline of 1,100 miles, how many one acre plots will it take to cover this distance? Carolyn Penny Nom lui répond.
	A kinky curve		2016-10-06
		tammie pose la question : Koch’s kinky curve is created by starting with a straight segment and replacing it with four segments, each 1/3 as long as the original segment. So, at the second stage the curve has three bends. At the next stage, each segment is replaced by four segments, and so on. How many bends does the curve have at the third stage? Penny Nom lui répond.
	A triple product		2016-10-03
		sam pose la question : Let a and b are vectors such that Vector a = (1,1,2) Vector b = (2,-1,1) And let vector c be a unit vector such that triple product of a,b,c is minimum . We have to find the value of c. [Thoughts] I thought triple product of a b, c means the volume occupied by parallelepiped. And we have to do volume minimum Penny Nom lui répond.
	An equation involving pi		2016-06-26
		Diaz pose la question : How would you solve : ( pie*X)/ 4 = -pie/2 I have no idea.what to do! Penny Nom lui répond.
	Two pieces of rope		2016-05-21
		Render pose la question : Fred cuts a 12- inch piece of rope. Then he cuts a second piece of rope that is 3/2 longer than the first piece. Is the second piece shorter or longer than the first piece? Explain. Penny Nom lui répond.
	Filling a pit with glass pebbles		2016-05-17
		Sam pose la question : I need to know how many pounds of glass pebbles are needed to fill a 24 inch across circular fire pit, if 5 pounds covers 4"H x 4"W x2"D? Thank u for any assistance, Sam Penny Nom lui répond.
	15.86 acres		2016-04-21
		Ronald pose la question : If a rectangular piece of land is 1320 ft. on one side, how many feet would be required on the other side to equal 15.86 acres? Penny Nom lui répond.
	Pizza delivery		2016-04-03
		Andrew pose la question : Suppose you own a local pizza restaurant, Pizza with Pizzazz, and in order to compete with the big pizza chains in your area you are considering an advertising campaign offering customers a free pizza if their pizza is not delivered in 30 minutes or less. Even though your pizza restaurant is known for its fast and friendly delivery service, you are not sure if you can afford to give away too many pizzas for free. Looking over your past 12,421 pizza deliveries you find out 97% of the pizzas were delivered in 30 minutes or less. Calculate the probability that all 100 randomly selected pizza deliveries will have been made in 30 minutes or less? Hint: Use the multiplication rule. (Round 4 decimals) I'm really stumped on how exactly to do this problem. I don't need the answer just the steps broken down to show me how to get it! It would be gladly appreciated if you could help! Penny Nom lui répond.
	A block wall		2016-03-15
		Robert pose la question : I have a wall 40 ft. long and 4 ft. tall as well as another one that is 30 ft by 3.5 ft. tall that I am trying to build. how many 6 inch by 12 inch landscaping blocks do I need? Penny Nom lui répond.
	Corrosion inhibitor in a pipeline		2016-03-02
		Edu pose la question : I have a 12 in pipeline and 5 miles long. I need to coat it with corrosion inhibitor how much chemical will I need Penny Nom lui répond.
	The range of a function defined piecewise		2016-01-13
		sarah pose la question : f(x)={x-2, x<-2        {x^2-4, -2_<x_<2        {x+2, x>2 find the range Penny Nom lui répond.
	Sierpinski Pyramid		2015-12-14
		victor pose la question : Is a tetrix (a Sirpienski Pyramid/Tetrahedron) its own hyperplane?...alternatively, is it a hyperplane? Robert Dawson lui répond.
	The flight of a ping pong ball		2015-10-13
		Abigail pose la question : Hello, Wondering if there is a way to figure out the quadratic equation of half of a parabola? Doing an assignment about finding quadratic equations for separate bounces of a ping pong ball, but the first bounce is incomplete (as the ball has presumably been dropped, hit the ground and then went on to make a complete bounce). Please see attachment for references to the diagram that I am using. Not sure whether I would have to look at it from a different perspective. Thanks, Abi Harley Weston lui répond.
	How can the probability be zero?		2015-10-13
		anagha pose la question : Hi, thank you for answering (beforehand) The other day I was just thinking of circles and I came across this peculiar thing. Most of'em say that there are infinite number of points on the circumference. and, if it is true, if we spin the radius, the probability that it will point a a particular point is 1/infinity, right? It didn't make any sense to me and so, I thought there might be an explanation or something of the kind...? Harley Weston lui répond.
	Mathematics		2015-10-13
		anagha pose la question : Hi, thank you for answering (beforehand) The other day I was just thinking of circles and I came across this peculiar thing. Most of'em say that there are infinite number of points on the circumference. and, if it is true, if we spin the radius, the probability that it will point a a particular point is 1/infinity, right? It didn't make any sense to me and so, I thought there might be an explanation or something of the kind...? Harley Weston lui répond.
	Is 22/7 is an irrational number?		2015-06-07
		Sayak pose la question : Is 22/7 is an irrational number Penny Nom lui répond.
	The volume of a pipe		2015-06-02
		gordon pose la question : What is the formula to find out how many gallon of water in a length of pipe tried your answer on 8inch at 50feet did not work out Penny Nom lui répond.
	The surface area of a cut pipe		2015-04-27
		ARUN pose la question : dear Sir, please advise me , how to calculate the surface area of a pipe with diameter of 630 mm and thickness of 67 mm which is cut in a angle of 22.5 degree. please show me how to calculate the surface area of the pipe which cut in an angle. Thanking you. Harley Weston lui répond.
	A piecewise function		2015-04-25
		uday pose la question : f(x)={x^2+3x+2 / x+2, x(not equal to)=-1 {4, x=-1 how to find domain and how the graph looks like Penny Nom lui répond.
	Bricks around a fire pit		2015-03-05
		Jayson pose la question : I have a round fire pit. It measures 25 inches in diameter. I have 12 inch long square bricks to go around it . My question is what degree do I cut the ends of these bricks to make them fit around this circle? The brick dimensions are 12"Lx6"Wx4"D. Harley Weston lui répond.
	Stopping distance		2015-02-11
		Audrey pose la question : A Harley Davidson motor cycle weighing 650 lbs with a rider weighing 175 bs was going 40 miles per hour. He had to make a sudden stop . Slammed on brakes. How long a distance for him to stop? Penny Nom lui répond.
	A 10-foot piece of PVC pipe		2014-10-21
		David pose la question : A plumber has a 10-foot piece of PVC pipe. How many 9/5-foot pieces can be cut from the 10-foot piece ? Penny Nom lui répond.
	A piecewise graph		2014-05-10
		Zoe pose la question : Lightning Energy charges residential users for each unit of electrical energy bought from them each quarter, according to the scale below: 0-500 units cost 17 cents per unit 500-1500 units cost $85 plus 10 cents for each unit in the excess of 500 1500 or more units cost $185 plus 9 cents for each unit in excess of 1500 Sketch a graph showing the charge C as a function of U for up to 2000 electricity units Penny Nom lui répond.
	The locus of a point		2014-04-04
		srishti pose la question : A point P moves such that the difference between its distance from the origin and from the axis of x is always a constant c . what is the locus of the point? Penny Nom lui répond.
	Graphing piecewise functions		2014-03-29
		Rayven pose la question : Hi! I'm in eighth grade, taking ninth grade algebra 1. I'm confused as to how to graph piecewise functions. I know that you have already answered a question similar to this (I did my research first) but it didn't completely help me on my homework. I have to graph piecewise functions for the specified domains, and create a table for the absolute values. I know that two bars around a number means absolute value (two bars around -2 makes it +2) , but how do I graph and chart the absolute value for the following: f(x)= |x+3 | for -5≤x≤3 And then graph and chart: (on a separate graph): f(x)= {x if x≤0 {x+1 if x <0 thank you! ~Rayven Penny Nom lui répond.
	Two overlapping arcs in a square		2014-03-15
		Jean pose la question : I have a square with side 4 cm. There are two overlapping arcs going from vertex to diagonal vertex. The other two vertices are the center of the arcs, which are shaded. How do I find the area of the shaded arcs? The overlapping arcs when shaded resemble a long thin football Thank you for your help. Penny Nom and Walter Whiteley lui répond.
	The number of cords on a pile of wood		2013-09-18
		Gary pose la question : a cord of wood is 4 feet by 4 feet by 8 feet, how much wood is a row that is 16 in by 5 foot by 32 feet? Penny Nom lui répond.
	Two overlapping circles		2013-05-22
		Alexandra pose la question : There are two overlapping circles. The two non-overlapping regions have areas A and B. As the area of overlap changes, the values of A and B also change. Prove that no matter how big and small the overlap is, the difference between A and B is always the same. Penny Nom lui répond.
	Cutting three sections of pipe		2013-05-16
		Michael pose la question : A plumber cuts three sections of pipe from a 12’ length of ABS pipe, the lengths of the sections are 33 3/8”, 56 5/8” and 39 7/8”. What is left over from the full length, if the saw cut is 1/8” wide? Penny Nom lui répond.
	The weight of a pipe full of water		2013-01-16
		joe pose la question : how do you figure out the weight of a pipe full of water Harley Weston lui répond.
	A function with 3 asymptotes		2012-10-19
		rimoshika pose la question : find a function that have 3 Asymptotic : y=x/y=sinx/x=-1 Penny Nom lui répond.
	Three piles of top soil		2012-10-07
		Steve pose la question : I need your help please, I am looking to purchase some top soil and keep getting conflicting answers. There are 3 piles and here are the sizes; Pile #1: 203 feet around and 21.29 feet high. Pile #2: 195 feet around and 18.75 feet high. Pile #3: 150 feet around and 17.98 feet high. I look forward to hearing back from you asap. Thank You! Steve Harley Weston lui répond.
	Functions		2012-09-18
		nayeem pose la question : I tried with many functions but I am not getting the exact values please help me A give an example of a function whose domain equals the set of real numbers and whose range equals the set the set {-1,0,1}? B Give an example of a function whose domain equals (0,1)and whose range equals [0,1] C.Give n example of a function whose is the set of positive integers and whose range is the set of positive even integers D. Give an example of a function whose domain is the set of positive even integers and whose range is the set of positive odd integers E give an example of function whose domain is the set of integers and whose range is the set of positive integers. F. Give an example of function whose domain is the set of positive integers and whose range is the set of integers. please show me the work Please give me the trick of finding such functions Robert Dawson and Harley Weston lui répond.
	Functions		2012-09-18
		nayeem pose la question : I tried with many functions but I am not getting the exact values please help me A give an example of a function whose domain equals the set of real numbers and whose range equals the set the set {-1,0,1}? B Give an example of a function whose domain equals (0,1)and whose range equals [0,1] C.Give n example of a function whose is the set of positive integers and whose range is the set of positive even integers D. Give an example of a function whose domain is the set of positive even integers and whose range is the set of positive odd integers E give an example of function whose domain is the set of integers and whose range is the set of positive integers. F. Give an example of function whose domain is the set of positive integers and whose range is the set of integers. please show me the work Please give me the trick of finding such functions Robert Dawson and Harley Weston lui répond.
	The distance between overlapping circles		2012-07-26
		Jeff pose la question : I have two circles of different size that overlap one another: Circle #1 has an area(A) of 731,475, so I can calculate its radius as 482.6. Circle #2 has an area(A) of 502,517, so I can calculate its radius as 400. If I know that the area where they overlap is 179,271, how can I calculate the distance between the midpoints of these two circles? Chris Fisher lui répond.
	A pile of topsoil		2012-07-23
		Perry pose la question : I have a pile of topsoil that is 42ft long and 16ft tall shaped like a cone how many yards of topsoil do I have. Penny Nom lui répond.
	A pie chart		2012-05-01
		muhammad pose la question : How can i construct a pie chart on the following of the combunation of students:- Sos 50, Crs 25, Eng 100, Iss 75, Geo 150, Hist 10 Penny Nom lui répond.
	Two overlapping circles		2012-03-21
		Monty pose la question : If you have a 3.75" radius circle overlapping a 5" radius circle with their centers 3" apart what would be the area of the non-overlapped portion of the small circle? Penny Nom lui répond.
	The price per square inch of a pizza		2012-03-17
		jordan pose la question : pizzaz pizza sells a small pizza for $10.99.it has a diameter 10 inches.what is th price per square inch ? Penny Nom lui répond.
	Building a tipi		2012-01-29
		Lacy pose la question : Hi there! We are building a tipi for our children. We want to build a large one about 15ft tall with a base of about 15 feet diameter. I am trying to figure out how much canvas we need to accomplish this. I graduated about 20 years ago and am struggling. Please help if you can. Penny Nom lui répond.
	1 + 3 + 3^2 ...+3^(n-1) = 3^n - 1/2		2012-01-27
		Vicki pose la question : I am trying to find out how to do show how this proof was worked. Here is the end result 1 + 3 + 3^2 ...+3^(n-1) = 3^n - 1/2 This equation was used to find the number of white triangles in the Sierpinski Triangle Walter Whiteley lui répond.
	Four pizzas		2012-01-23
		kris pose la question : a pizza company wishes to put 4 medium pizzas in a box to sell as a party pack. The box they want to use the square and has dimensions of 60cm by 60cm. They need you to help them calculate the dimensions of the pizza that will fit in the box. Calculate the following: area, radius, diameter, circumference Penny Nom lui répond.
	A picture in a frame		2012-01-10
		nnadozie pose la question : a picture, which measures 46cm by 38cm, is surrounded by a frame, which is 2cm wide, find the area of the frame. 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! Pinar Penny Nom lui répond.
	The weight of 36 inch steel pipe		2011-12-22
		Keith pose la question : What is the weight of 36 inch steel pipe 3/4 wall per foot in lbs. Penny Nom lui répond.
	An octagonal fire pit		2011-08-19
		terry pose la question : i have a 18 ft diameter gravel circle laid down for a fire pit. i want to lay the paver stones out in a octagon pattern. How long would the sides of my octagon be to fit center on the 18 ft diameter of gravel base? Penny Nom lui répond.
	A pipe in a ditch		2011-05-19
		Jim pose la question : How many cubic feet of stone will it take to fill to six inches around a 4 inch pipe in a ditch 128 ft long x 20 in wide? Penny Nom lui répond.
	pi + pi		2011-03-20
		Sarah pose la question : what is pi + pi? Penny Nom lui répond.
	Slicing a rectangular parallelepiped		2011-02-23
		tom pose la question : a) Pass a plane containing a vertex of a rectangular parallelepiped and a diagonal of a face not containing that vertex to cut a pyramid from the parallelepiped. What fraction of the volume of the parallelepiped is the volume of the pyramid thus cut off? b)Pass a plane through a cube of edge 8 in so that the section formed will be a regular hexagon. Through each side of the hexagon pass two planes, one plane containing one of the two vertices of the cube which are farthest away from the plane of the hexagon, the other plane containing the diagonally opposite vertex of the cube. Find the volume of the solid bounded by these planes. c)three of the edges of a rectangular parallelepiped that meet in a point are also the lateral edges of a pyramid. What fraction of the parallelepiped is this pyramid...? you know the my only problem is how to illustrate this one...if only i could ...can you help me....all I need is the drawing and I can do the rest ..it's fine if you'll only answer any of these but I'll be thankful if you will do the three :).... Penny Nom lui répond.
	Area and volume of a parallelepiped		2010-12-14
		ryan pose la question : Got a question, I'm really confused what the question mean and how the diagram would look like... someone please help... Here's the question. The base of a parallelepiped is a rectangle 4m by 6m. If its lateral edge is 8m and is inclined at an angle 45 degrees to a 6m edge of the base, find the total area and volume of its parallelepiped. My dilemma is what does it mean by the lateral edge of 8m is inclined at 45 degrees to a 6m edge of the base? Can someone post a diagram to help me solve the promble. Thanks in advance. Chris Fisher lui répond.
	Intersecting polygons		2010-11-17
		Laura pose la question : How can I estimate the amount of intersection (area or better a normalized number) between two polygons if I have the cartesian coordinates of their vertices? Thank you in advance, regards, Laura Robert Dawson lui répond.
	Bbippities, bops, and boos		2010-11-05
		Stacey pose la question : six bippities equal three bops,and six bops equal two boos. How many boos are there in one bippity,one bop, and one boo?? Stephen La Rocque lui répond.
	A taxi ride		2010-09-22
		Jack pose la question : A taxi ride costs you $2 for the first km and 10 cents for each tenth of a km thereafter. Sketch a graph of the total cost $C(x) for a ride of xkm, for 0 < x < 2. Hint: The graph is not smooth. How will I start this question off? I tried the table of values method, and then graphed it, but it comes out as smooth, Stephen La Rocque lui répond.
	Limits		2010-09-20
		rodrigo pose la question : what's the limit of x+1/x-1, when x tends to 1? Janice Cotcher lui répond.
	Constructing a tipi		2010-09-20
		mike pose la question : we are thinking about making a lightweight tipi tent but we need to know what the angles and lengths of each side that we will need to cut. The height of the tipi wants to be about 2.2m span at the widest point wants to be about 3.2m we want to make it based upon a 6 sided(hexagon) shape thanks for your help Harley Weston lui répond.
	Pi		2010-07-26
		Eden pose la question : I think that "pi" is an important number in math. I have learned this number's approximate value since childhood but I haven't known how can it be got and who find that number . So please help! Robert Dawson lui répond.
	A circular oil slick of uniform thickness		2010-05-22
		Susan pose la question : Hi, I have this problem on a homework assignment and just can't seem to figure it out: A circular oil slick of uniform thickness is caused by a spill of 1 m^3 of oil. The thickness of the oil is decreasing at the rate of .001m/h. At what rate is the radius of the slick increasing when the radius is 8. Penny Nom lui répond.
	A conical pile of gravel		2010-05-15
		Chuck pose la question : If I have a conical pile of gravel 50 feet across at the base and a height of 65 feet and the slope of the side is approximately 60 degrees, how do I calculate the cubic yards? Robert Dawson lui répond.
	The diameter of a circle		2010-04-30
		Jimmy pose la question : If I have a straight line with a known length and decide to make a circle out of this know length how would I calculate what the diameter of the circle would be Penny Nom lui répond.
	The width of a picture frame		2010-04-28
		Daniel pose la question : The frame of a picture is 28 cm by 32 cm outside and is of uniform width. What is the width of the frame if 200 cm ^2 shows? Penny Nom lui répond.
	A conical pile of gravel		2010-04-13
		Chassity pose la question : The gravel pile is 120' around at the base and goes up 20' high at the peak. How many tons or yards of gravel in that pile? Penny Nom lui répond.
	Two overlapping circles		2010-04-12
		Scott pose la question : There are two circles, big circle with radius R and small one with radius r. They intersect and overlap in such a way that the common area formed is 1/2 pi r^2 (half the area of the small circle). The Question is: suppose we have known the radius r of the small circle, and the distance between the two circle centers, what should the radius R of the large circle be? Chris Fisher lui répond.
	Two overlapping circles		2010-03-07
		Hayden pose la question : I have two circles of equal size. The radiuses of the circles are 30ft. The two circles are positioned 40ft apart and I need to find the area where they overlap. Harley Weston and Tyler Wood lui répond.
	Odds and evens in an n by n+1 table		2010-01-21
		Shankar pose la question : The boxes of an n * (n+1) table ( n rows and n+1 columns) are filled with integers. Prove that one can cross out several columns ( not all of them !) so that after this operation all the sums of the numbers in each row will be even. Robert Dawson lui répond.
	A circular photo in an octagonal frame		2010-01-13
		Mike pose la question : I have a circle photo 18 and one quarter inches round. I want to cut frame for it in a octagon shape. What would the angle and the length of cut be? Mike Robert Dawson lui répond.
	Trigonometry and picture hanging		2010-01-13
		george pose la question : The top of a picture 1m high 0.8m from the ceiling. At a point on the ceiling directly in front of the picture, we wish to install a light so that the angle subtended by the picture equals to the angle of depression of the top of the picture. How far out from the wall should the light be installed? Penny Nom lui répond.
	Cows, pigs and ducks		2010-01-06
		Eileen pose la question : There are 239 cows and pigs in a farm. The total number of cows and ducks in the farm is 767. There are 5 times as many ducks as pigs. If the farmer can sell each duck for $7.50, how much can he collect from the sale of all his ducks? Robert Dawson lui répond.
	The volume of a compost pile		2009-12-11
		Tim pose la question : I have a pile of compost that is78 feet long by 18 feet wide at base by 9 feet tall to a point. At the width it looks like a triangle I'm looking for the square yards Thanks Penny Nom lui répond.
	Two adjacent pig pens		2009-12-04
		alysia pose la question : A pig farmer wants to build two adjacent pens using 96 feet of fencing. He wants rectangular pens that share the short side and the overall length is to be six more than twice the width. What should be the dimensions of the overall pen? Penny Nom lui répond.
	Two overlapping circles		2009-11-19
		Raraa pose la question : There are two identical circles . The edge of one circle is at the middle point of the other circle. There were overlapped . The area of the overlapped surface is 20000 square centimetres . How do I find the radius of the circle rounded to the nearest whole centimetre ? Penny Nom lui répond.
	Cables in a pipe		2009-11-13
		john pose la question : how many 0.28 mm diameter cables will fit into a 19.05 mm diameter pipe Stephen La Rocque lui répond.
	Cutting a pipe at an arbitrary angle		2009-10-24
		Carol pose la question : I have read your article on cutting pipe,etc. at a 45 degree angle. I need to develop an equation and pattern for cutting any size pipe (3" to 7") to any degree. I don't understand how to transfer the wave pattern to graph paper. Thanks. Harley Weston lui répond.
	e^pi and pi^e		2009-10-22
		Natalie pose la question : Question from natalie, a student: Without using your calculator, prove which is bigger: e^pi or pi^e we talked about ad absurdum in class, so I'm assuming that is how I approach this question, but since neither of them have a variable( like the examples we actually solved in class), I'm not quite sure how to solve it.... Harley Weston lui répond.
	$6.25 in nickels quaters and dimes		2009-10-10
		miriam pose la question : a piggy bank contains $ 6.25 in nickles quaters and dimes. there are 65 coins all together and there are four times as many nickles as quaters find the number of coins of each kind Penny Nom lui répond.
	Ordering pizza for 162 people		2009-10-01
		Jean pose la question : Need to know how to feed about 162 people 70 square inches of pizza at the lowest price. 22" Pizza is $9.95 16" Pizza is $5.25 12" Pizza is $2.99 Penny Nom lui répond.
	Friends in a class		2009-09-14
		pran pose la question : it is known that among any group of three students in a class two of them are friends. the total number of students is 25. prove that there is a student who has at least 12 friends Claude Tardif lui répond.
	Chickens and pigs		2009-08-28
		David pose la question : A farmer has a number of chickens and pigs. There are 24 heads and 80 ft. How many pigs and how many chickens are there? Robert Dawson lui répond.
	A paper towel roll		2009-08-19
		Jeff pose la question : I am making a spiral tube with paper that is 2" in dia. and 102" long I will be using paper that is slit 3" wide how many lineal feet of paper will I need to to cover the 102" I will be using 3 rolls of paper that will over lap the other by half to make a hard tube (paper core) in a roll of paper towels Thanks Jeff Penny Nom lui répond.
	The leaning tower of Pisa		2009-08-09
		MF pose la question : Would you have any idea how the 'latitude of 44 degrees N" has anything to do with this question and how I would apply it? The leaning tower of Pisa leans toward the south at an angle of 5.5 degrees. One day near noon its shadow was measured to be 84.02 m long and the angle of elevation from the tip of the shadow to the top of the tower was measured as 32.0 degrees. To answer the question, assume that the tower is like a pole stuck in the ground, it has negligible width. Also, it is important to know that Pisa Italy is at a latitude of approx 44 degrees North because this affects the direction of the shadow.) Stephen La Rocque lui répond.
	liquid in a 3/4 inch pipe		2009-06-30
		junior pose la question : We are in dilemma at my job. We need to figure out the formula for how much water can our pipe hold. It's inside diameter is 13/16" and is 50ft. long? Robert Dawson lui répond.
	The surface area of a fire pit		2009-06-30
		eric pose la question : whatw is the square footage of the inside wall of a fire pit 2 feet deep and five feet in diameter? I need to estimate both the floor and wall square footage to order bricks. Robert Dawson and Harley Weston lui répond.
	A gravel pile in my driveway		2009-05-13
		Dean pose la question : The only place I have to deliver gravel is in my driveway. The driveway is 16 ft wide by 18 ft long. How much gravel can I order as to not exceed the boundaries of my driveway when the truck dumps the gravel onto my driveway? I am assuming the angle of repose comes into play when calculating this elliptical pile? The maximum amount of gravel I need is 12 cubic yards. Robert Dawson lui répond.
	A six sided pyramid		2009-05-11
		Karen pose la question : I am going to make my kids a six sided tipi (pyramid) I have a 5 foot tall central pole, and I would like the floor area to be 6 feet across. How do I work out what size to cut each fabric panel to make this happen? Harley Weston lui répond.
	Filling a container with water		2009-04-22
		frank pose la question : With one house pipe it takes 8 hours to fill a container with water. How long will it take with 4 house pipes of the same size and the same water pressure and same container? Robert Dawson lui répond.
	15 pigs in 4 pens		2009-04-22
		Melissa pose la question : A farmer has 15 pigs. He wants to put them all into 4 pens, have an odd number of pigs in each pen, and have no pigs left over. Also, he isn't thinking about having any for dinner, as they are his pets. How does he do it? Robert Dawson lui répond.
	Pi		2009-04-21
		Serena pose la question : Who invented pi? Robert Dawson and Stephen La Rocque lui répond.
	An octagonal shaped gravel pit		2009-04-16
		Melissa pose la question : What is the square footage of a 7'3" square ocatogon with a height of 5 inches? I need to know how much pea gravel to buy for my sons gravel pit. Stephen La Rocque lui répond.
	How many times is 9 in pi?		2009-04-09
		Serena pose la question : How many times is 9 in pi? Robert Dawson lui répond.
	An equation for a line with a changing slope		2009-03-21
		Ben pose la question : Is there anyway to write an equation for a line with a changing slope. e.g. A cell [hone company has a initial fee of 50$ paying for the first 100 minutes, the rate then increases to 10 cents per minute, then at 500 minutes the rate is 5 cents per minute. If so please tell how. Thanks Penny Nom lui répond.
	A 20 foot piece of pipe		2009-03-19
		chris pose la question : How many 8 inch pieces can you get from a 20 ft. piece of pipe? Penny Nom lui répond.
	An octagonal landscaping frame		2009-03-01
		Richard pose la question : Hi I am trying to put landscape timbers down in octagon shape that measures 6 feet across and outside measures 360 degrees.. The timbers are 4 inches by 4 inches. I need to know at what angle to cut boards and at what length i need to complete octagon. Thanking you in advance for your kind assistance. Richard :) Harley Weston lui répond.
	Triangles within triangles		2009-02-24
		Mari pose la question : a large shaded triangle changes each day with a white triangle appearing in the center of each shaded one. If this pattern continues, how many white triangles will be there on the 6th day? On the 6th day, what fraction of the large outer triangle will be white?THANKS! Robert Dawson lui répond.
	Percentage difference in pipe volumes		2009-02-22
		mike pose la question : what is the % difference between a 3 inch diameter pipe compared to a 4 inch diameter pipe? and how do i find the answer? Penny Nom lui répond.
	A ¾ inch copper pipe		2009-02-22
		Ray pose la question : Hi Do you have a formula I can use for this problem? And how to use it. Thank You How many feet of ¾ inch copper pipe will it take to hold 3 gallons of water? Harley Weston lui répond.
	Gallons of water in a 3 mile pipe		2009-02-19
		tim pose la question : I need to know how many gallons of water a 16" pipe that is 3 miles long holds? Penny Nom lui répond.
	y = p q^t		2009-02-12
		Conor pose la question : y= p x (q (to the power t) ) ; y= 100 when t = 2 and y= 4 when t= 0 a) find p and q b) hence find y when t=4 Stephen La Rocque lui répond.
	A piecewise function for monthly salary		2009-02-03
		Josh pose la question : A sales rep for a drug company is paid on the following scale. His base salary is $1600 per month. He is also paid a commission of 2% of sales over $20,000. When his gross sales reach $30,000 he is then paid 4% on the amount above that until his sales reach $50,000 after which point his commission becomes 6%. His commission reaches 8% when his sales total goes over $100,000 for the month. Set up a piecewise function for the information above. Harley Weston lui répond.
	Concrete around a pipe		2009-01-14
		Doug pose la question : How much concrete will i need for a hole that is 20 feet deep 20 inches in diameter with a 8-inch pipe in it. I need to know how much concrete on the outside of the 8-inch pipe. Penny Nom lui répond.
	The volume of a pipe elbow		2008-12-31
		mhd pose la question : how i can find volume of the pipe elbow of 4inches? Stephen La Rocque lui répond.
	A spill of oil on a flat surface		2008-12-19
		Phillip pose la question : Hello, my question is: If I spilled 25 gallons of diesel fuel on a flat surface how much area would the spill cover? How would I mathematically figure it out? Thanks! Robert Dawson and Harley Weston lui répond.
	The volume of a pipe		2008-12-10
		Walter pose la question : What is the volume of a pipe 7.92 inches inside diameter and 22 km. long in cubic feet of water Robert Dawson and Harley Weston lui répond.
	Compatible numbers		2008-10-30
		Paul pose la question : Use compatible numbers to estimate the quotient of 23.52 and 11.04 Penny Nom lui répond.
	Related rates		2008-10-16
		Gisela pose la question : As sand leaks out of a hole in a container, it forms a conical pile whose altitude is always the same as its radius. If the height of the pile is increasing at a rate of 6 in/min, find the rate at which the sand is leaking out when the altitude is 10in. Penny Nom lui répond.
	Concrete around a pipe		2008-10-08
		mick pose la question : i am trying to find the area of concrete to be placed around a concrete pipe! Dimensions can be 12m wide by 5m wide by 7m deep and pipe been 8m by 600mm radius... Stephen La Rocque lui répond.
	What is the exact value of pi?		2008-09-27
		mahesh pose la question : what is the exact value of pi. 22/7 is accurate value of pi, if not then how can i find out the exact pi value. Harley Weston lui répond.
	Cutting a pipe at an arbitrary angle		2008-09-20
		John pose la question : from the original question Al asked about cutting a 200 diameter pipe in 45 degrees. can someone explain the math steps required to creating the graph. I am trying to do the same thing only using a 150 degree cut. Harley Weston lui répond.
	Pumping water into a tank		2008-09-13
		nadha pose la question : A water pump can fill a tank at the rate of 750 litres per hour.A tank has a capacity of 9000 litres. Find the time needed to fill 7/15 of the tank? Stephen La Rocque lui répond.
	Grouping addends		2008-09-13
		juan pose la question : how do you group the addends then find the sum: 2+4+6= Penny Nom lui répond.
	Cutting a pipe on a 45 degree angle		2008-09-12
		Bakshani pose la question : how do you a mark a pipe 5 inch diameter and cut it to form a 45 degree angel Stephen La Rocque lui répond.
	The length of a pipe		2008-08-25
		John pose la question : How many feet of one inch pipe would it take to hold 30 and 40 gallons of water? Imperial gallons please. Penny Nom lui répond.
	Graphing a piecewise function		2008-08-12
		Shanti pose la question : how do you graph a step function or piecewise function such as u^2 if u is greater than or equal to -2 and less than 1 2- u if u is greater than or equal to 1 and less than 4 Penny Nom lui répond.
	Right Sided Limit of an Exponential Function		2008-07-29
		joseph pose la question : I am trying to find the limit as X approaches 0 from the positive side of x to the sin of x which look like this lim x^sinx x->0+ Harley Weston lui répond.
	The size of a pipe		2008-06-29
		payal pose la question : hi , i want to know the area of a pipe with 63.5 mm diameter and 3718 mm height . can u pls help me Harley Weston lui répond.
	What is a 1% slope?		2008-06-17
		randy pose la question : trying to figure out percentage of slope lets say i have to run a pipe 80' at a 1%slope how much pitch is that? Harley Weston lui répond.
	A piecewise equation		2008-06-16
		John pose la question : AT&T charges $39.99 for 450 minutes per month. It charges 45 cents per minute over the 450 minutes. How can I make a piecewise equation of this problem? Penny Nom lui répond.
	The wedges in a circle graph		2008-05-18
		Libby pose la question : I don't understand how to do this word problem: The cafeteria workers distributed a survey to the student body asking students to pick 1 from a list of 5 choices for their favorite lunch. The circle graph below gives the results of the survey for the students who responded. What is the measure, in degrees, of the central angle for each choice? And there is a pie chart that has food choices with these percentages: 25%, 20%, 15%, 10%, and 30% Leeanne Boehm and Penny Nom lui répond.
	Two overlapping circles		2008-04-26
		Michelle pose la question : Two overlapping circles O and Q have the common chord AB (vertical line between the overlapping circles). If AB is 6 and circle O has a radius of length 4 (horizontal line going through the overlapping circles and touching the side of the circle) and circle Q has a radius of length 6, how long is OQ. Penny Nom and Walter Whiteley lui répond.
	The maximum area of a pizza slice		2008-04-12
		charles pose la question : A slice of pizza in the form of a sector of a circle has a perimeter of 24 inches. what value for the radius of the pizza makes the slice largest[when o is the central angle in radians, the area of the sector is given by A= r^20/2and the length on the circle is given by s=r0 Harley Weston lui répond.
	Cutting a 200 diameter pipe at 45 degree angle		2008-04-10
		Al pose la question : i want to cut a 200 diameter pipe in 45degrees. Can you demonstrate how to develop a flat rap around please Harley Weston lui répond.
	The cost before tax and shipping		2008-02-06
		jonathan pose la question : Please explain how to solve this problem. I know you have to work backwards. If i have $125 to spend, how do I know the most I can spend before adding 6% tax and 9% shipping.(shipping is cost before tax) I can only figure this out by trial and error. I know there is a better way Penny Nom lui répond.
	Two spinners		2008-02-05
		Kim pose la question : Zack has two spinners with numbers on them. the probability of spinning a 7 on both spinners is 3/20. if the probability of spinning a 7 on the first spinner alone is 1/4 what is the probability of getting a 7 on the second spinner alone? Penny Nom lui répond.
	Bubbles trapped in the volumetric pipet		2008-01-31
		Nursing pose la question : In determining the density of a liquid, a student left air bubbles trapped in the volumetric pipet. Did this give a density less than expected or greater than expected? Why? Penny Nom lui répond.
	Belled-out pier		2008-01-28
		Gina pose la question : I need to know how to find the total yards needed to fill a concrete pier that is 54"/ 108" and 26' deep. That is...54" @ the top of the pier belled to 108" @ the bottom...26' deep. Stephen La Rocque lui répond.
	Pie graphs		2008-01-15
		amarilis pose la question : explain why circle graphs are called pie graph or pie charts Stephen La Rocque lui répond.
	Pictographs		2007-12-11
		eniyah pose la question : The title of my pictograph is Favorite pets. I have two columns. in my first column is the kind of pet and the second column is the numbers of students, the dogs have 16 student that like them and cats have ten students the likes them. each pictures equals 2 stodents my question is. i have to draw paictures to show the number of students for each row. the key says each symbol equals 2 students. since 16 divided by 2 is 8 can you show me how to make this in a graph Stephen La Rocque lui répond.
	Confidence level		2007-11-19
		Fara pose la question : It is common for public opinion polls to have a " confidence level" of 95%, meaning that there is a 0.95 probability that the poll results are accurate within the claimed margins of error. If six different organizations conduct independent polls, what is the probability that all six of them are accurate within the claimed margins of error? Does the results suggest that with a confidence level of 95%, we can expect that almost all polls will be within the claimed margin of error? Harley Weston lui répond.
	A limit of the form 0 times infinity		2007-11-13
		Russell pose la question : find the following limit lim x((e^1/x) -1) as x --> infinity Penny Nom lui répond.
	Stopping distance and speed		2007-11-11
		Joanna pose la question : The algebraic relation d=0.0056^2 ++ 0.14s models the relation between a vehicle's stopping distance d, in metres, and its speed s, in kilometres per hour. (a) What is the fastest you could drive and still be able to stop within 80 m? (b) What is the stopping distance for a car travelling at 120 km/h? (c) Estimate the length of an average car. How many car lengths does the the stopping distance in (b) correspond to? Stephen La Rocque lui répond.
	l'Hospital's rule		2007-10-28
		SWAPNA pose la question : Evaluate the following limit using L'Hospitals Rule lim (sin x/x) ^ 1/(x^2) x-->0 Harley Weston lui répond.
	Surface area of an open-ended cone		2007-10-16
		Lorne pose la question : What is the surface area of an open ended cone? Measured at 10' high, 16' diameter on the bottom and 2' diameter at the top. Stephen La Rocque lui répond.
	lim (1- 2 cosx) / (sin(x- pi/3))		2007-10-15
		hanan pose la question : lim (1- 2 cosx) / (sin(x- л/3)) Harley Weston lui répond.
	Roof trusses		2007-10-05
		Mary pose la question : I need to know how algebra is used in making or designing of roof trusses for a house. I have to present a poster in class showing how algebra is used in daily jobs. My dad works at a truss company. Chris Langdon lui répond.
	Number of real solutions		2007-10-05
		Sujith pose la question : The no of real solutions of the equations 1+x+x^2+x^3 = x^4+x^5 is ? Harley Weston lui répond.
	Liquid in a pipe		2007-09-05
		christian pose la question : how many cubic feet are in a pipe that is 3" (inside diameter) and 459 feet long? Stephen la Rocque lui répond.
	The irrationality of PI		2007-08-07
		Matthew pose la question : I have what I like to think of as a rather interesting question that I can't explain confidently for the life of me. If we take a circle with a radius of 1 and we calculate the circumference, we can use 2 pi R. Doing this calculation results in a circumference of 6.28318530717~ which goes on forever. However, if you were to take a that same circle in the real world, say with radius 1cm and wrap a string around it, and then measure the string, you don't get 6.28~, you get something like 6.2, a much more finite distance. The length of the string is not an irrational number, like the math claims it to be. Claude Tardiff and Stephen La Rocque lui répond.
	Comparing flow rates of two pipes		2007-07-14
		Kenneth pose la question : If two water pipes are 3 feet long, but one of them has a 1 foot diameter and the second has a 1 1/2 foot diameter, what simple mathematical method can be used to determine how much faster one pipe can drain water than the other pipe? Stephen La Rocque lui répond.
	Babylonian geometry		2007-06-17
		marleen pose la question : The following problem and the solution were found on a Babylonian tablet dating from about 2600BC: Problem: 60 is the Circumference, 2 is the perpendicular, find the chord. Solution: Thou double 2 and get 4 Take 4 from 20, thou gettest 16 Square 16, thou gettest 256 Take 256 from 400, thou gettest 144 Whence the square root of 144, 12 is the chord. Such is the procedure. Modern day mathematicians have reasoned that the Babylonian Mathematician who solved this problem assumed that the value of Pi is 3. By explaining in detail how the Babylonian Mathematician must have solved this problem, justify the reasoning of the modern mathematicians. Stephen La Rocque lui répond.
	Uses of pi		2007-05-08
		Kari pose la question : How is pi used in real life? Penny Nom lui répond.
	What is the origin of pi?		2007-04-30
		Aastha pose la question : from where has been tha value of "pi" derived? or what is the origin of "pi" Penny Nom lui répond.
	What is the Sales Tax? and Shipping?		2007-04-24
		Mark pose la question : 1 Item $4020.44 1 Item $1749.86 1 Item $11455.62 Total 17,225.92 The sales tax and shipping is included in the total. The sales tax rate is 8.75% What is the Sales Tax? and Shipping? Stephen La Rocque lui répond.
	Factor by grouping		2007-04-16
		Vincent pose la question : How do you factor the ( ) are exponents 4b4b(3)+ a(2)b - 4a - ab(4) I still don't understand if there is no a in 4b4b Penny Nom lui répond.
	Principia Mathematica		2007-04-12
		victoria pose la question : i need help making a poster on emilie du chatelet a great mathematician can you describe the newton principia because i know that she worked on it thanks, victoria Stephen La Rocque and Penny Nom lui répond.
	A pictograph		2007-03-14
		Angie pose la question : I am confused! I have to include a title, labels, and a key: Here is the problem Snickers 45 Kit Kats 65 Nerds 30 Kisses 50 Suckers 75 With the above information please help me make a candy pictograph I would gladly like your help as my child is a second grader and can not tell me anything about a pictograph Penny Nom lui répond.
	What is pi?		2007-03-09
		Billy pose la question : What is pi? Jaymi Peterson and Sara Ulmer lui répond.
	What value of pi did the Indians use?		2007-03-06
		gigi pose la question : What value of pi did the indians use? Penny Nom and Sara Ulmer lui répond.
	The grade 6 math curriculum		2007-02-24
		Ajay pose la question : Do you have a list of topics a 6th grade students should learn in the 6th grade? I am "rusty" in math and would like to assist my son... Example: if an icetray has X cc of water and is split into 8 parts...what is the volume of each part...is this truly 6th grade level math? Pam Fowler and Penny Nom lui répond.
	Piecewise Functions		2007-02-09
		Steph pose la question : h(x)={-2 if x<0 {x+1 if 0< x <10 {-1/2x+16 if x>10 PLEASE HELP Penny Nom lui répond.
	21 pigs and only 4 pig pens		2007-01-11
		Emma pose la question : i was given this pig pen problem. if there are 21 pigs and only 4 pig pens how can you distribute the pigs into the pens and have an odd number of pigs in each pen. it doesn't seem possible to me. i need help! Haley Ess lui répond.
	How many gallons of water in 6600 feet of half inch pipe		2007-01-09
		David pose la question : How many gallons of water in 6600 feet of half inch pipe Stephen La Rocque lui répond.
	Th pitch of a roof		2006-12-15
		Rob pose la question : I am trying to determine how much to add for roof pitch. I guess the best way would be to use a right triangle as an example. The base of the triangle is always 12 inches. The leg pointing straight up is a variable. I will say 6" in this example. By changing the variable how can i determine how much longer the hypotenuse than the base expressed in percent or decimal. Stephen La Rocque lui répond.
	Piecewise functions		2006-11-08
		Kait pose la question : We discussed how to graph piecewise functions today and I'm very lost!! I'm sitting here staring at this problem that says: f(x){2x+1, if x <1 f(x){-x+4, if x is greater than or equal to 1. Penny Nom lui répond.
	Piecewise functions		2006-09-24
		Claudia pose la question : hi! i was just looking at a question by someone else about piecewise functions, but i still don't get it. my problem is g(x){x+2 if x <-2} g(x){2x - 1 if x> or = -2} Penny Nom lui répond.
	How much water it will hold?		2006-09-20
		Doug pose la question : I have thirty feet of piping that is two inches in diameter and I want to know how much water it will hold and the equation for solving the answer. Stephen La Rocque lui répond.
	If all of them work together, ...		2006-07-27
		Kakron pose la question : Pipe A can fill in 20 mins and pipe B can fill in 30 mins and pipe C can empty the same in 40 mins. If all of them work together, find the time taken to fill the tank? Stephen La Rocque lui répond.
	Flipping a coin		2006-06-08
		John pose la question : If a coin is flipped n times, where H is the number of heads after n flips, and T the number of tails, then will the quantity (H-T) change signs infinitely often as n goes to infinity? Chris Fisher lui répond.
	Landscaping		2006-05-11
		Luke pose la question : HOW MANY CUBIC YARDS OF CONCRETE WILL IT TAKE TO FILL UP A BOX 20FT.X20FT.X6IN DEEP? HOW MANY CUBIC YARDS OF CONCRETE WILL IT TAKE; I HAVE A 12FT.IN DIAMETER POND AND I WANT TO PUT A 3FT.SIDEWALK AROUND THE OUTSIDE OF IT? Stephen La Rocque lui répond.
	Small pipes and large pipes		2006-05-09
		geece pose la question : A large fresh water reservoir has two types of drainage system. Small pipes and large pipes. 6 large pipes, on their own, can drain the reservoir in 12 hours. 3 large pipes and 9 small pipes, at the same time, can drain the reservoir in 8 hours. How long will 5 small pipes, on their own, take to drain the reservoir? Penny Nom lui répond.
	Cutting a piece of PVC pipe		2006-05-03
		Shonda pose la question : A plumber has a 10' piece of PVC pipe. How many 9/5 foot pieces can be cut from the 10' piece? Penny Nom lui répond.
	The last slice of pizza		2006-04-27
		Lori pose la question : I have a pizza. The radius is 10 inches long.The pizza was cut into 16 equal slices. When one slice was left, my sister and I both wanted it, so we agreed to cut it in half, but I like the crust more than she does, so we decided to cut it the "other way." In other words, the two pieces would not be symmetrical. The inside piece would contain all topping, and the outer piece would contain some topping and some crust. How far up the radius from the center of the circle will I need to cut so we will both have an equal area of pizza? Stephen La Rocque lui répond.
	Marine shipping - fuel consumption		2006-04-26
		Sandy pose la question : When a ship is 800 nautical miles from port its speed is reduced by 20%, thereby reducing the daily fuel consumption by 42 tonnes and arriving in port with 50 tonnes onboard. If the fuel consumption per hour is given by the expression (0.136 + 0.001V^3) where V is speed in knots; Estimate a) reduced consumption per day b) fuel onboard when speed reduced c) normal consumption for 800 nautical mile voyage d) increase in steaming time Stephen La Rocque lui répond.
	Which has more pizza?		2006-04-19
		Kristine pose la question : Which has more area: a round pizza that is 16 inches in diameter or three square pieces of pizza that are 8.5 inches on each side? Stephen La Rocque lui répond.
	Overlapping area of two circles		2006-04-15
		Jade pose la question : Given two identical circles where the radius (6 units) is the distance between the centers, what is the area of the overlapping region? Stephen La Rocque lui répond.
	An epicycloid		2006-04-10
		Sharon pose la question : What is the name of the curve formed by a point on the circumference of a circle that rolls on the outside of a fixed circle? This curve is used in the study of gears. Stephen La Rocque and Penny Nom lui répond.
	The cost of pizza		2006-03-28
		Kristine pose la question : Use the formula for the area of a circle, A=3.14rsq, to determine which is a better deal: a 14-in. pizza for $10.50 or a 16-in. pizza for $11.95. Using 3.14 for pi Penny Nom lui répond.
	Piecewise functions		2006-03-21
		Kris pose la question : First Problem: Southeast Electric charges .09 cents per kilowatt-hour for the first 200 kWh.The company charges .11 cents per kilowatt-hour for all electrical usage in excess of 200 kWh. How many kilowatt-hours were used if a monthly electric bill was $57.06? The answer I came up with is 360, is that right? and also how do I set it up in an equation form? Second Problem: A construction worker earned $17 per hour for the first 40 hr of work and $25.50 per hour for work in excess of 40 hr. One week she earned $896.75. How much overtime did she work? I came up with 8.5 hrs over-time worked. Again I don't know how to set up the equation to come up with the answer. I need some pointers on how to figure out story problems! If you have any suggestions that would help me out I would be very grateful. Penny Nom lui répond.
	The square footage of an area in my backyard		2006-03-17
		Kim pose la question : I need to find out how to calculate the square footage of an area in my backyard that is in the shape of a "slice of pie". There are two sides that are straight lines that come together at the top to form a point, and then at the bottom is a curved line that joins the two other lines together. I need to figure out how to calculate the square footage that is inside the area. Penny Nom lui répond.
	The first six million digits of PI		2006-03-08
		Lori pose la question : How many threes are there in the first six million digits of PI? Also how many nines? Stephen La Rocque lui répond.
	Related rates and an oil spill		2006-02-12
		Brandon pose la question : An Oil Tanker Spills 100,000 cubic meters of oil, which forms a slick that spreads on the water surface in a shape best modeled by a circular disc is increasing at a rate of 3m/min (it doesn't state what is increasing at 3m/min, so I'm assuming Radius until I can ask my teacher.) At t=T, the area of the "circular" slick reaches 100pi Sq. meters. A) how fast is the area of the slick increasing at t=T B)How fast is the thickness of the slick decreasing at t=T C)Find the rate of change of the area of the slick with respect to the thickness at t=T. Penny Nom lui répond.
	The diameter of a pipe		2006-01-27
		An other pose la question : I know the base length of my arc (10 inches) - I also know the height at the center to the arc (2 inches). I don't think the end is at the midpoint tho. How do I figure out how long the arc length is? My question involves being able to cut a round pipe into an arc that is 10 inches wide and 2 inches tall. I need to know the smallest diameter pipe to buy in order to fulfill these requirements. Penny Nom lui répond.
	A picture window		2005-11-14
		Marcos pose la question : The length of a picture window is 2 feet longer than twice its width. If the diagonal of the window is 13 feet, find the dimensions of the window. Penny Nom lui répond.
	(x/1+x)^x		2005-10-23
		A student pose la question : LIMIT x-.->0 (x/1+x)x how to solve it. Penny Nom lui répond.
	How many pixels are there to an inch?		2005-10-15
		Fred pose la question : I want to know how many pixels there are to an inch. Penny lui répond.
	A 3-dimensional pie shape		2005-09-17
		Bill pose la question : Your site appeared in my search for the name of a 3-dimensional pie shape. 2-d would be a sector of a circle. As it it curved, I don't believe it is in a the polyhedra family. Can you help me find the mathematical term for it? Chris Fisher lui répond.
	I need to know the measurement of 75grams of spice into milliliters.		2005-09-16
		Cyla pose la question : I don't know if this is possible but I need to know the measurement of 75grams of spice into milliliters. Even an approximation would be great. Penny Nom lui répond.
	A piecewise function		2005-09-15
		Duncan pose la question : A child is assigned to your care and she has a headache. The parent has authorized the administration of Children's Tylenol. Read a box of Children's Tylenol (or any other similar drug) and find the directions for administration. Note the child's weight and the corresponding dosage. (Be sure the drug you choose has a minimum of 4 weight intervals.) Penny Nom lui répond.
	Cows, chickens and pigs		2005-09-10
		Markequetta pose la question : I was asked a question by a friend who refuses to give the right answer to a question that I answered wrong. So if you can help me that would be great! The level of my question is secondary I believe. Question: Cows cost: $10 Chickens cost: $0.50 Pigs cost: $3 You have to buy 100 animals and spend $100, so how many cows, chickens, and pigs do you have on your farm? Claude Tardif lui répond.
	L'hopital's rule		2005-05-15
		Abraham pose la question : Find the limit of [(1/(x+4))-(1/4)]/x as x approaches zero. How do you use l"hopital's rule to find this limit. I know how to do it with multiplying everything by 4(x+4), and getting the answer, -1/16.But how do you apply derivatives with l'hopitals rule to this type of problem? Penny lui répond.
	How much sand is in a pile?		2005-04-16
		Larry pose la question : I was wondering if there is a formula for determining how much sand would be in a pile. I am a student in medical school, and this is a bonus question for a test. I hope you can help me. Harley Weston lui répond.
	Two overlapping circles		2005-03-20
		Safi pose la question : I have a problem to calculate the area of two overlapping circles because two circles are overlap then how i calculate the overlap area to subtract from the area of both circle. Penny Nom lui répond.
	If the mixture is 1 pint to 6 gal		2005-03-13
		Trey pose la question : If the mixture is 1 pint to 6 gal. Do i use 4 pints to 24 gallons of gas Penny lui répond.
	21yd 2ft divided by 5=what?		2005-03-10
		A student pose la question : 1gallon 3qt divided by 6= what? 21yd 2ft divided by 5=what? Penny Nom lui répond.
	1 pied linéaire		2005-02-18
		Christiane pose la question : Pouvez-vous m'indiquer 1 pied linéaire égale quoi? 3 pied....? Claude Tardif lui répond.
	A parallelepiped		2004-09-25
		Aman pose la question : " If OA, OB, and OC are three edges of a parallelepiped where O is (0,0,0), A is (2,4,-2), B is (3,6,1), and C is (4,0,-1), find the coordinates of the other vertices of the parallelepiped.)" Penny Nom lui répond.
	The volume of a pile of mulch		2004-09-22
		Sam pose la question : Is there a formula to determine the cubic feet of something in a pile. IE- I need to determine the cubic feet of a pile of mulch. The pile comes to a peak, so the length and width decrease as the pile increases. Penny Nom lui répond.
	f(x) = x-4 if x<2		2004-09-21
		Dani pose la question : Hi, my name is Dani. I'm in tenth grade Algebra 2, and I'm learning about a lot of different kinds of functions, and I can't quite seem to understand how every part of the piecewise function works. I understand most of it, I think, but I've been looking at an example in my math book, and I'm not sure how they got the answer they did. The part I don't understand reads: "Graph f(x) = x-4 if x<2" and "Identify the domain and range." The picture in the book shows an open circle at (2,-2), with an arrow going down and to the left with the slope being one. How did they get the open circle to be at (2,-2), and why does the arrow point where it does? Penny Nom lui répond.
	Fabricating with pipe		2004-09-19
		Gil pose la question : I need to fabricate a 10 section, 4" pipe circle with an inside diameter of 40". I would like to know what angles would apply and how to find them, Penny Nom lui répond.
	Pick a number greater than 1		2004-06-25
		A student pose la question : I understand that when you pick a number greater than 1 and less than 10; multiply it by 7 and add 23, then add the digits of that number until you get a one digit number. Then multiply that number by 9, add the digits of that number until you get a one digit number, subtract 3 from that number and divide the difference by 3; that this process will always give you the result of 2. Does this have a name or theory for it as to why the answer will always be 2? Penny Nom lui répond.
	What is the name of a 3D rectangle?		2004-06-07
		Jack pose la question : if a cube is a 3D square, what is the name of a 3D rectangle? Penny Nom lui répond.
	Three dice		2004-05-10
		A student pose la question : If one has 3, 6 sided dice what is the probability of the numbers that are rolled to total 4 through 10 inclusively? Subsequent to this, what is the probability to do this consecutively...say 3 times? Peny Nom lui répond.
	Pi		2004-05-10
		Kim pose la question : I'm a 7th grader at Lakeside Middle School. And I was wondering if you can answer a question for me for my math project. I'm doing a project on pi, and my teacher said to ask an expert like you to ask about how you would use the subject, pi, in real life usage. How would you use pi in real life usage? Penny Nom lui répond.
	Water in a pipe		2004-04-25
		Marlean pose la question : How much water would be in a 480 foot one inch inside diameter pipe?? In imperial gallons please. thanking you in advance for your help in this matter. Penny Nom lui répond.
	Logarithms		2004-02-01
		A student pose la question : Where did the word logarithmic come from? Where/whom did it originate? Harley Weston lui répond.
	Divisibility by 2 or 5 or both		2003-10-30
		Abdu pose la question : How many positive integers less than 1,001 are divisible by either 2 or 5 or both? Penny Nom lui répond.
	The volume of an earthen pit		2003-09-12
		Bruce pose la question : This shape would occur at the four corners of a rectangular shaped earthen pit with sloping sides (1:1.5). Depth is 14'. Top dimensions are 170' by 158'. After calculating the easy volume components of this shape, we are left with the end corner pieces. 21' base, 14' height, side hypotenuse 25.24' and corner diagonal 32.83'. We're confused. Thank you for any help you may provide. Penny Nom lui répond.
	Graphing a piecewise function		2003-08-24
		Amber pose la question : How do i begin to graph a piecewise function, absolute function or step function? Penny Nom lui répond.
	Spacing the spindles for a railing		2003-06-06
		Jennifer pose la question : Scott is a homebuilder. He builds railings in which he places spindles. Spindles ar evertical posts taht are equally spaced beneath a horizontal bar. Scott would like a mathematical model to help him determine the amount of space to put between each spindle. The railing must follow the following criteria: The spaces between each spindle must be equal except for the ones at either end. Theses spaces are smaller. They are half the width of a spindle less than the other spaces. The number of spindles needs to be minimized since spindles are costly. Help Scott determine what width of space to use between the spindles. Create a mathematical model to determine the width of space between each spindle in termso f the number of spindles. Use an 8' (96") railing that has 2 1/2" wide spindles. Explain your thinking. For safety reasons the maximum width of a space is 4" Generalize you model to determine the width of spaces for total railing of length L and spindle width s Penny Nom lui répond.
	The volume of air flowing in windpipes		2003-05-02
		James pose la question : The volume of air flowing in windpipes is given by V=kpR4, where k is a constant, p is the pressure difference at each end, R is the radius. The radius will decrease with increased pressure, according to the formula: Ro - R = cp, where Ro is the windpipe radius when p=0 & c is a positive constant. R is restricted such that: 0 < 0.5*Ro < R < Ro, find the factor by which the radius of the windpipe contracts to give maximum flow? Penny Nom lui répond.
	Chopping trees		2003-04-19
		Tamara pose la question : The master needs some of the trees (twenty, to be exact) at the back of his spooky old mansion cleared to make way for a new evil laboratory, so he decides to send some his slaves to do the work for him. He initially sends out four of his men, armed with axes, to chop the trees down. Due to the fact he is very impatient, every ten minutes he sends out another man to help with the work. Assuming that it takes one man 30 minutes to chop down 1/3 of a tree, how long till all twenty trees are chopped down? Penny Nom lui répond.
	Divide a circle in 8 equal pieces		2003-04-04
		Naomi pose la question : I have to divide a circle in 8 equal pieces but can only cut 3 times can you please help me Penny Nom lui répond.
	Friends and enemies		2003-03-24
		Becky pose la question : Consider a room that contains six people. Any two people are either friends of each other, or they are enemies. A. Argue why there are three people, all who are friends, or there are at least three people, all who are enemies B. Rephrase the situation using graph terminology, using all of these terms correctly: vertex, edge, graph, complement, clique, independent set, and bipartite. Penny Nom lui répond.
	Cubic yards in a gravel pile		2003-01-10
		Ron pose la question : I am looking to find a way to measure gravel piles to get yards. They are generaly not square.it would be like pouring sand out of a bag into a pile. they generaly are concave in dimension. can you help. I have attached a picture to show a small scale what I am working on is in much larger volume. Harley Weston lui répond.
	What really is pi?		2002-09-05
		Rachel pose la question : what really is pi? 3.1444 Penny Nom lui répond.
	Addends can be grouped differently but the sum does not change		2002-09-03
		Jodia pose la question : I have been searching the web for over an hour & a half now for the answer to the following question: The _____ states that addends can be grouped differently but the sum does not change. Penny Nom lui répond.
	The circumference of a 72		2002-08-14
		Linda pose la question : What is the circumference of a 72" diameter circle? Penny Nom lui répond.
	A rope around a post		2002-07-15
		Nic pose la question : My daughter who is in the 10th grade asked me this ?, you have a pole 45 inches high, 22inches around. You have a rope 1/2 thick, how many feet of rope would you use to go from top bottom of pole to top. Penny Nom lui répond.
	Pigs in pens		2002-07-10
		Shannon pose la question : A farmer has 21 pigs and 4 pens, he must put an odd number of pigs in each pen, how does he do it? Penny Nom and Chris Fisher lui répond.
	Overlapping circles		2002-05-29
		Naman pose la question : There are two circles, big circle with radius R and small one with radius r. They intersect and overlap in such a way that the common area formed is 1/2 pi r 2 (half the area of the small circle) If r=1, find the Radius of the big circle (R)? Harley Weston lui répond.
	An Olympiad problem		2002-04-23
		Aurora pose la question : I wrote a mathematical Olympiad the other day and there was one question that I could not work out. The question was If ab = 1, bc =2, cd =3, de =4 and ea = 6, what does a + b + c + d +e = It was a multiple choice and the answers were : 43/6; 47/6; 49/6; 53/6; 61/6 The correct answer was 61/6, but how can do you get to that answer? Anrei Volodin lui répond.
	A probability problem		2002-03-23
		Kate pose la question : If I have a spinner and then spinner has the numbers 1,2,3,4 on it and it is spun 3 times, what is the probability that the spinner will stop on 4,3,and 1 ? In that order? Leeanne Boehm lui répond.
	Shipping charges		2002-02-19
		Sohail pose la question : A mail order company charges a fixed fee for shipping merchandise that weighs 1 pound or less, plus an additional fee for each pound over 1 pound. If there shipping charge for 5 pounds is $4.80, and for 12 pounds is $6.20, find the fixed fee and the additional fee. Penny Nom lui répond.
	Diameter of a pipe		2002-02-16
		Landry pose la question : I am trying to calculate the dia. of a pipe 60 inches long that will hold a gallon of water. What is the formula? Penny Nom lui répond.
	Zeta[2]=(Pi2)/6		2002-02-02
		alex pose la question : Can you please tell me a proof that Zeta[2]=(Pi2)/6 Chris Fisher lui répond.
	Nickles, dimes, quarters and fifty cent pieces		2002-01-08
		A parent pose la question : The total for all coins counted is $4,564.50 The last coin added to the pile is a 50 cent piece There are 8 times as many 50 cent pieces as there are quarters There are 6 times as many dimes as nickles How many of each are there? Penny Nom lui répond.
	Maple trees and pine trees		2002-01-06
		A student pose la question : A team of scientists found that in a forest there was four maple trees for every nine pine trees.How many maple were there if they counted 45 more pine than maples? Penny Nom lui répond.
	2/3 vs 3/4		2002-01-02
		Julia pose la question : So, here's my question. Some of the problems they've had to do starts off with two fractions, and they have to tell whether the two fractions are: The first one is greater than the second one The first one is less than the second one, or They are equal. One day my son had the problem of 2/3 vs 3/4. Without drawing out a pie chart, how in the world can a child "eyeball" a problem like this and tell what the correct answer is? I've also tried to teach about making common denominators, but that's going over his head at this point. Denis Hanson and Harley Weston lui répond.
	Piles of coins		2001-12-05
		A student pose la question : Sharon has less than 20 coins. When she puts them in piles of 5, she has 1 left over. When she put them in piles of 3, she also has 1 left over. How many coins does Sharon have? Penny Nom lui répond.
	L'Hopital's Rule		2001-11-25
		Mike pose la question : I'm a high school senior. I'm in ap calculus and was wondering if you know the proof of L'Hopital's Rule? Our teacher said he has never been able to find it in a math book and was unable to derive it himself. Claude Tardif lui répond.
	The "pi" of a circle in hyperbolic space		2001-11-19
		Alex pose la question : How can you find the "pi" of a circle in hyperbolic space (or is it the same). I would like to know because our environment is hyperbolic and if the "pi" of hyperbolic space is irrational, it would follow that space is non discrete. I would greatly appreciate any help in this question. Walter Whiteley lui répond.
	Is the tree a pine tree?		2001-10-27
		Kate pose la question : Suppose Stock Brokers tell the truth 2/5 of the time, and 1/3 of the trees in a given forest are Pine. If 4 Stock Brokers say that a certain tree in that forest is Pine, what is the probability that the tree is indeed a Pine tree? Penny Nom lui répond.
	The best of 7		2001-09-08
		Michelle pose la question : Professional basketball, hockey, and baseball championships are decided on the best 4 out of 7 games. The first team to win four games wins the championship. In how many possible ways could the team win the championship series after winning the first game? Example: Game 1 2 3 4 5 6 7 Result W L L W W W Leeanne Boehm lui répond.
	Sharing a donut		2001-09-06
		Amanda pose la question : You have invited 11 people over to your house one day, and your friends are hungry. You go into the kitchen and find out you only have 1 donut (with a hole in the middle). In order to feed 12 people (including you), you must cut the donut into 12 pieces with only using a straight knife and cutting 3 times. This is NOT a trick question. Claude Tardif lui répond.
	e^pi > pi^e		2001-07-27
		Dusty pose la question : What book(s) contain a proof that ePi > Pie? I think it might be in Problems in Analysis published by Springer-Verlag but I have not been able to check. Chris Fisher lui répond.
	Some irrational numbers		2001-07-03
		Kellie pose la question : Is it possible to write pi as a fraction? Is it possible to write the square root of 2 as a fraction.. Explain why? Harley Weston lui répond.
	Pi		2001-05-24
		Mary pose la question : Where does the term pi come from and how many digits are actually in pi? Penny Nom lui répond.
	A pile of sand		2001-05-14
		Gul pose la question : Sand for use on icy roads is stored in a conical pile 14.2 m high and with a base diameter of 34.4 m calculate the volume of the pile if one sander can take 6.9 m of sand, how many sanders can be filled from the pile? Penny Nom lui répond.
	Typing a project		2001-05-01
		Tom pose la question : Two students have to type a project. One can do it in 2 hours. It would take the other student three hours. They have 2 type writers. How fast can they finish by working simultaneously? Claude Tardif lui répond.
	Dots on squared paper		2001-03-30
		Tom pose la question : Consider some squared paper with lines 1cm. apart and dots where the lines cross. Place squares whose sides are whole numbers of centimetres on the paper in such a way that the sides of the squares always lie along the lines on the paper. For each square, find (a)the number of points inside the squares; (b)the number of points on the square and (c)the area of the square. How are these quantities related? Leeanne Boehm and Penny Nom lui répond.
	Airflow in windpipes		2001-03-25
		Ena pose la question : The volume of air flowing in windpipes is given by V=kpR4, where k is a constant, p is the pressure difference at each end, R is the radius. The radius will decrease with increased pressure, according to the formula: Ro - R = cp, where Ro is the windpipe radius when p=0 & c is a positive constant. R is restricted such that: 0 < 0.5*Ro < R < Ro, find the factor by which the radius of the windpipe contracts to give maximum flow? Harley Weston lui répond.
	Factoring		2001-03-22
		Kaleena pose la question : Factor this equation: 5x7-10x5+4x3-8x Harley Weston lui répond.
	The n-th place of pi		2001-02-27
		Andrew pose la question : I have always wondered; is it possible to find the value of an irrational number, such as (phi) at it's nth decimal place??? You would plug the decimal place into the formula and the value would be given at the specified decimal place. When we look at the expression { (sqr 5 + 1)/2 } we are in a sense visualising the number in it's entirety, so the formula may include elements of the above expression in some form. Claude Tardif lui répond.
	A merchant from Pisa		2001-02-11
		A student pose la question : A merchand doing business is Lucca doubled his money there and spent 12 denarii. On leaving, he went to Florence, where he also doubled his mone and spent 12 denarii. Returning home to Pisa, he there doubled his money and again spent 12 denarii, nothing remaining. How much did he have in the beginning? Claude Tardif lui répond.
	A limit using l'hopital's rule		2000-12-13
		Wassim pose la question : I need to know how to solve the: limits of (x ( to the power lamda) -1 )/LAMDA when lamda tends to zero ( the answer is that the functional form is ln x) and I still don't know how using hopital rule leads to this answer. Harley Weston lui répond.
	Pizza delivery		2000-12-07
		Meghan pose la question : 3 men give 10 dollars each to a pizza deliver driver and when he gets back to his work the manager says to the pizza driver the bill was actually 25 dollar so he has to returns 5 dollars. on his way to the mens house he the driver decides to kept 2 dollars for himself and he gives 1 dollar back to each of the men. So each one of the men actually paid 9 dollars. but 9 times 3 is 27 plus the other 2 that the driver took equals 29 so where did the other dollar go. Harley Weston lui répond.
	A 16 slice pizza		2000-11-30
		A student pose la question : What is 5/8 of a 16 slice pizza? Penny Nom lui répond.
	A piecewise linear equation		2000-11-24
		Jacky pose la question : There is a light bulb and it is given that the light bulb cost $0.75 and the cost of operating it is $0.0081 per hour. From the information give, I came up with the linear equation: Let c be total cost and Let h be hours used. Therefore: c = 0.0081h + 0.75 represents the total cost of the light bulb and the electricity. However, the second part of the question added the fact that the light bulb will only last for 800 hours. If the light bulb is replaced as soon as it burns out exactly after every 800 hours, how can I write an equation that represents that? Is it possible? What would it look like on the graph. Harley Weston lui répond.
	Pillows and Cushions		2000-09-27
		Fiona pose la question : The following problem was given to grade eleven algebra students as a homework assignment. To manufacture cushions and pillows, a firm uses two machines A and B. The time required on each machine is shown. Machine A is available for one full shift of 9.6 hours. Machine B is available for parts of two shifts for a total of 10.5 hours each day. Harley Weston lui répond.
	Six typists		2000-08-19
		Paula Duncan pose la question : If it takes a typist 4.5 hours to type 860 words, how many hours would it take 6 typist to do 16800 words? Penny Nom lui répond.
	L'Hospital's Rule		2000-07-19
		Dan Krymkowski pose la question : The limit of the following as x goes to infinity is 2*y. Y is a constant. lim 2*x*log(x/(x-y)) = 2*y Harley Weston lui répond.
	Pi to 5 decimal places		2000-06-03
		Emily pose la question : The question is find the value for pi to 5 decimal places???? Penny Nom lui répond.
	Two calculus problems		2000-05-01
		Kaushal Shah pose la question : How Do WE Integrate the following Functions, Integral xtanx dx How was natural base "e" discovered and why e=2.7....... Claude Tardif lui répond.
	Pi		2000-02-22
		Shelley Collier pose la question : Numbers that can be written in the form p/q where p and q are integers, (q not 0), are known as rational numbers. What you are missing is that p and q must be integers. The fact that Pi is irrational means that you can't have a circle with both the circumference and diameter being integers. In fact you can't even have the circumference and diameter both rational since the quotient of two rationals is again a rational. Claude Tardif and Penny Nom lui répond.
	Counting guppies		2000-01-26
		Sarah Albaugh pose la question : Out of 200 fish, 99% are guppies. How many guppies must be removed to have 98% of the remaining fish to be guppies? Penny Nom lui répond.
	A roll of paper		2000-01-15
		Richard pose la question : I have a roll of paper, wrapped around a corrugate core, whos diameter is 10.750 in. The outer diameter of the roll is approx. 60 in. The thickness of the paper is .014 in. I am trying to find out how much linear feet of paper is left on the roll, given only the diameter of paper remaining on the core. Chris Fisher and Harley Weston lui répond.
	Three dimensional rectangle		2000-01-11
		Dennis Murphy pose la question : I would like to find out the name of a Three dimensional rectangle. Harley Weston lui répond.
	Advanced Calculus		1999-12-07
		Kay pose la question : Hi, my name is Kay. Please help---these problems are driving me crazzzzy!!!! Your help would be greatly appreciated! Let a,b be contained in R, a . . . Claude Tardif lui répond.
	A pictograph		1999-10-28
		Ali pose la question : Please tell me how to make a pictograph.I am 2 grade student. Penny Nom lui répond.
	Cutting a board into 8 equal pieces		1999-10-21
		Brittany pose la question : Jamie wanted a board cut into 8 equal pieces. The Lucas Lumber Co. charges 60 cents for cutting a board into 4 equal pieces. How much will it charge for cutting Jamie's board? Claude Tardif lui répond.
	Piecewise functions.		1999-10-20
		Jenny pose la question : How do you figure out a piecewise function by hand? e.x. ( 2x (if x is not equal to 0) f(x)=< ( 0 (if x is not equal to 0) Harley Weston lui répond.
	l'Hospital's Rule		1999-10-18
		Yannick Gigandet pose la question : How can I solve these two limits : lim when n approches 1 of n[a1/n -1] lim when x approches 0 of (eax - ebx) / x Thanks for the answer! Harley Weston lui répond.
	Six toothpicks		1999-09-14
		Maddie pose la question : The book asks: Using 6 toothpicks represent the number 17. I am studying expressions to represent a number. ex.) (2+4)4x4=96. Penny Nom lui répond.
	Circles, cirmcuference and area		1999-05-16
		Stephen Ehrler pose la question : I would appreciate if you could please tell me if what I discovered here is something or my ignorance? I noticed that a circle with r radii has the folling characteristic. r = [2 * ( pi * r2 / pi * 2r)] The equation states that the ratio of a circles area over its circumfrence = 1/2 that of the circles radii. It works every time. Did you know this ? Is it some kind of therom and can it be used for any thing? I thought this was intresting and would appreciate any input you may have. Thank you. Chris Fisher lui répond.
	Shopping at Wegman's		1999-04-22
		Stan pose la question : Joanne, Steve, Pat, Alice, Joan, and Bill go to Wegman's at the same time. Joanne buys 2 gal of milk, 1 dozen oranges, 8 apples, and 2 lb. of ground beef, paying a total of $13.24. Steve buys 3 qts. of milk, 5 lbs. of ground beef, 10 lb. of potatoes, and 2 bags of mixed vegetables, paying a total of $16.95. Pat buys 3 gal. of milk, 2 dozen oranges, 1 dozen apples, 5 lb. of potatoes, and 5 bags of mixed vegetables, paying a total of $25.09. .... Find the cost of: 1 qt. of milk, one orange, one apple one lb. of ground beef, one lb. of potatoes, and one bag of mixed vegetables. Penny Nom lui répond.
	Pi/4		1999-04-04
		Daniela Annarella pose la question : What is the 30th digit of pi(1/4) after the decimal point? Harley Weston lui répond.
	John Napier and e		1999-02-06
		Shimin pose la question : I would like to ask about the exact definition of e, its history (like how John Napier came about discovering it) and its applications in problems and real life situations. Thank you! Chris Fisher lui répond.
	Math Olympics		1999-01-19
		Kim Brandson pose la question : I am trying to put on a Math Olympics for K-5 students in my district. Any ideas? Resources? Suggestions? Jack LeSage lui répond.
	Logs		1998-10-21
		Benny pose la question : What does log means? How come we have to use log Chris Fisher lui répond.
	Rational and Irrational Numbers		1998-09-19
		Ri pose la question : I am trying to explain rational & irrational numbers to my niece who is grade 7 and am having difficulties. Could you please explain the difference between rational & irrational numbers. Thank you Ri Penny Nom lui répond.
	Cutting a Pizza		1998-09-09
		Woody pose la question : what is the greatest number of pieces of pizza you can form if you use five straight cuts to cut the pizza? answer given is 16. please draw a diagram of the answer. thanks, woody Penny Nom lui répond.
	Pi		1997-10-31
		Ryan McKinnon pose la question : What Is Pi? Chris Fisher lui répond.
	A Question About Pi.		1997-07-08
		Mike Chan pose la question : I have read the section Repeating Decimals in your data base. It mention that 1/17 has at most only 16 repeating digits. But, why does "pi" have an infinite number of digits (and not repeating ). Penny Nom lui répond.
	Triangles, The Pythagorean Theorem and Pizzas.		1997-02-23
		Sherryle Mathis pose la question : I am a graduating senior presently teaching geometry as part of my student teaching. I will do my CUP on Right Triangles and Pythagorean theorem. I am looking for a fun activity as part of my unit plan. Walter Whiteley lui répond.
	Approximating pi.		1996-11-04
		Ben Dixon pose la question : How do you calculate Pi? Do you have to somehow combine the equation for a circle with the formula for the circumference? Chris Fisher lui répond.
	e^(i*pi) = -1		1996-02-19
		Matt Schneider pose la question : Why is e^(i*pi) = -1? Harley Weston lui répond.

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