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	Avec les chiffres 1,5,6,7, vous devez arriver a un total de 21		2006-09-28
		Danny pose la question : J'ai un problème qui est le suivant: Avec les chiffres 1,5,6,7, vous devez arriver a un total de 21 en les utilisant qu'une seule fois et en utilisant la multiplication, l'addition, la division et la soustraction... Claude Tardif lui répond.
	problème de trigonométrie		2005-11-01
		Manon pose la question : Soit un triangle ABC, de cotes a , b et c, avec A=45° et B=60°. Apres avoir demontre que 3a²-2b²=0 (que jai fais en utilisant la regle du sinus) et a²-2c²+2ac=0 (que jai fait en utilisant la regle du cosinus), vous montrerez que laire du triangle ABC peut sexprimer: { [ 3 + racine carre 3 ] / 12 } b² unites. Je ne sais pas comment arriver a cette expression de laire. Je narrive pas a exprimer c² et ac en fonction de b².. et je pense que ca pourrait vraiment aider.. puisque je suis arrive a letape: ac[(racine carre 3) / 4] avec ac = a² + c² - b² et a² = 2/3 b² ms c²= 1/3 b² + ac Claude Tardif 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.
	Simplify		2021-02-05
		Leslie pose la question : To simplify improper fractions, do you convert it to a mixed number or leave as an improper fraction? My daughter had a quiz in which she was supposed to simplify her answers. So, for example, on one question the answer she got was 11/10 and on another question she came up with 17/12. The teacher marked these as incorrect because they were mixed numbers. Her teacher wrote on her paper, "**name**, I even gave this back to you and told you to go through and simplify your answers!" We (her father and I) feel that the teacher wanted her to convert her answers, not simplify them but I haven't been able to find a definitive answer online. So, does simplifying improper fractions mean converting them to mixed numbers? Thank you for your help! Penny Nom lui répond.
	4sin(2x)cos(2x)+1=0		2020-07-02
		Sheila pose la question : 4sin(2x)cos(2x)+1=0 Penny Nom lui répond.
	The equation of a line		2019-12-10
		Jourdan pose la question : Suppose a mining company will supply 96000 tons of ore per month if the price is 80 dollars per ton but will supply 70500 tons per month if the price is 20 dollars per ton. Assuming the supply function is of the form y = m x + b , find the slope, m and y-intercept, b Penny Nom lui répond.
	cos (3pi/2 -x)		2019-11-20
		sam pose la question : 1. express the following as a trigonometric function of angle x for cos (3pi/2 -x) the answer in the textbook is -sin x but i am unsure of the process to get the answer. Penny Nom lui répond.
	The area of a triangle in acres		2019-06-23
		Karen pose la question : if I have a triangle that measures 78 ft x 54 ft x 50 ft, how do I figure out what part of an acre that is?? Harley Weston lui répond.
	Loan payment formula		2019-02-24
		Kenneth pose la question : I have a question regarding the loan payment formula shown below. Calculating the Payment Amount per Period The formula for calculating the payment amount is shown below. Simple Amortization Calculation Formula A = P X r(1 + r)n over (1 + r)n - 1 where A = payment Amount per period P = initial Principal (loan amount) r = interest rate per period n = total number of payments or periods Is this formula/calculation a condensed version of a longer calculation? I am curious to know how the (1 +r)n - 1 was developed from the longer calculation. For example, r(1 + r)n may have been (r + rn)n. The n's are exponents. I thank you for whatever helpful explanation that may be provided. Kenneth Harley Weston lui répond.
	The exponential form of sqrt(13)		2019-02-10
		isaebl pose la question : what is the exponential form of sqrt(13) Penny Nom lui répond.
	cos(2x) = sin(x)		2018-12-18
		Liz pose la question : Determine all values of x in [0,2pi] that solve the equation Cos(2x)=sinx Penny Nom lui répond.
	The point-slope equation for a line		2018-09-23
		Sally pose la question : The equation of the line in point-slope form for the line passing through the point ( 4, -6) and parallel to the line y = -6x + 2. Describe the steps. Penny Nom lui répond.
	Exponential form		2018-09-14
		Saquanna pose la question : What is 25 in exponential form Penny Nom lui répond.
	Exponential form		2018-09-12
		Grace pose la question : hi, I can't figure out how to do 735 in exponential form. note that im only in 5th grade and its not supposed to be in the scientific notation or whatever. okay, thanks! Penny Nom lui répond.
	Form a cone from a circle sector		2018-08-12
		Tinashe pose la question : A 216 sector of a circle of radius 5cm is bent to form a cone. Find the radius of the base of the cone and its vertical angle. Penny Nom lui répond.
	The square root 3 in exponential form		2018-05-09
		Paige pose la question : how do you write the square root 3 in exponential form Penny Nom lui répond.
	Simplify 1/2^i		2018-01-28
		Deepak pose la question : How do I simplify this complex equation: z=1/(2^i) Penny Nom lui répond.
	Exponential form		2017-11-25
		Sherry pose la question : What is the exponential form of 3sqrt 15? Penny Nom lui répond.
	A rope formed in a semicircle		2017-08-29
		Janna pose la question : How do I find the total length of a piece of rope formed in a semicircle that has a diameter of 8 inches? Penny Nom lui répond.
	Exponential form		2017-07-06
		estela pose la question : what is exponential form of 9×1000 Penny Nom lui répond.
	Exponential form		2017-03-04
		michael pose la question : I was teaching my student about exponent when we stumbled across this problem. "write (-125)^-3 in exponent form" The problem is with the number "-125". I think -125 = (-5)^3. But one of my student thought that it is -125= -5^3. Both of them is equal to -125 but they totally different in structure. I wonder which one is correct and why it is. I am worried if they get this wrong, it might spell problem in the future when we start substituting the numbers with variable. Thank you very much for reading my question and answering it. Penny Nom lui répond.
	Standard form		2016-09-22
		anna pose la question : ok. i have b=2/3x+5/7. im supposed to change it to standard form. how do i do that? Penny Nom lui répond.
	Exponential form		2016-08-31
		Lily pose la question : Hi! I was wondering, I was having a little issue understanding this one problem. It was "write 81 in exponential 2 different ways" and I already got 9(2) but I was wondering what the second one could be! Thanks! -Lily Penny Nom lui répond.
	Euler's polyhedron formula		2016-05-20
		Antonia pose la question : why does not cylinders follow Euler's polyhedron formula ( V-E+F=2) ?? if a cylinder has 3 faces, 2 edges and 0 vertices it doesn't follow Euler's formula??? Penny Nom lui répond.
	sin 2x - sin x = 0		2016-04-24
		lilly pose la question : sin 2x - sin x = 0 0 Penny Nom lui répond.
	Exponential form		2016-01-26
		Jufe pose la question : What is the exponential form of ³√11x² Penny Nom lui répond.
	Complex numbers in standard form		2016-01-15
		Michael pose la question : express the following complex numbers in standard form (2+3i)+(5-2i) Penny Nom lui répond.
	Exponential form		2015-10-17
		Will pose la question : What is exponential form of -8? Penny Nom lui répond.
	Locating the center of a circle that forms an arc		2015-04-23
		Ken pose la question : Find the Cartesian coordinates of the center of an arc with the given location of the beginning and end points and radius length. Not the midpoint of the circumference but the actual point that the arc is drawn around. I know their are two answers depending on the direction of the arc. Unless we assume that all arcs are drawn counter clock wise. Thanks Ken Harley Weston lui répond.
	A word problem with fractions		2015-04-09
		Lorraine pose la question : If the numerator of a certain fraction is doubled and the denominator is increased by 1, the fraction becomes 1/2. If the numerator of the original faction is squared and the denominator is decreased by 2, the fraction becomes equal to 1. Let x be the numerator and let y be the denominator of the original fraction. Write down two simultaneous equation in x and y. Solve these equations to find two possible values for the given fraction. Penny Nom lui répond.
	Prime factorization in exponent form		2014-10-31
		Emma pose la question : I need to find out how to make a prime factorization of 120 in exponential form. Penny Nom lui répond.
	Solve for theta		2014-04-25
		ALASTAIR pose la question : Hi, The question asks Solve for 'theta' cos2theta=sintheta x costheta. Substituting for cos2th either 1-2sin^2th or 2cos^2th does not give an equation in either sine or cosine alone how do I solve this please? Penny Nom lui répond.
	What is the exponential form of 1/square root of 6v?		2014-02-16
		Prince pose la question : What is the exponential form of 1/square root of 6v Penny Nom lui répond.
	Prime factorization		2014-02-06
		Kadeejah pose la question : Write the prime factorization of 37 in exponential form Penny Nom lui répond.
	Exponential form		2013-12-01
		Alina pose la question : My question says to express each number in exponent form in as many different ways as I can; 16, 81 and 64. How do I do this? Penny Nom lui répond.
	Two teams of 4 playing 4 rounds of golf		2013-09-29
		Tom pose la question : We would like to play a ryder cup format with two teams of 4 playing 4 rounds of golf. Three of the rounds would be pairs playing each other and one round would be singles. How can we set up the foursomes so we balance the number of times we play with every other golfer. Victoria West lui répond.
	An equation in slope-intercept form		2013-08-12
		Brittney pose la question : write an equation in slope-intercept form of the line that is parallel to the grapg of y=-3/4x+6 passes through -8,-5 Penny Nom lui répond.
	Compound interest		2013-05-10
		Kyla pose la question : I am doing correspondents and cannot figure out how to explain the solution to this question, I do not understand how they came to this answer and need it explained step by step so I can complete the following questions in this unit, please help!!! Calculating compound Interest Johnny invest $800 that pays 8% compounded quarterly for 5 years. How much is the investment worth at the end of the 5th year? Penny Nom lui répond.
	How do i reverse this formula?		2013-04-20
		MK pose la question : I have 22,000,000 worth of gold and wants to want to resell the gold back with a profit. Each transaction of gold will have a transaction fee of 15%, so if i resell the gold back at 22,000,000, I will only get back 18,700,000 after 15% transaction cut. The current formula is X-15%X = Y where X = 22,000,000 and Y = 18,700,000 Will u be able to come up with a new formula if we don't know the value of X but we know the value of Y Something like this X-15%X = 22,000,000. How do i reverse this formula to find the value of X Thanks Penny Nom lui répond.
	How do i write log_8(P) =7 in exponential form?		2013-04-14
		nancy pose la question : How do i write this in exponential form log8P =7 Penny Nom lui répond.
	Row echelon form		2013-03-15
		Shawn pose la question : Please help me put matrix in row echelon form: 1 9 8 0 5 8 1 35 1 -4 -1 17 Penny Nom lui répond.
	Exponential form		2013-02-05
		Sandra pose la question : What is 37,008 in exponential form? Help me please!!! Penny Nom lui répond.
	A trig identity		2013-01-04
		Tehmas pose la question : Prove sinC+sinD=2sin(C+D/2)cos(C-D/2) Harley Weston lui répond.
	The quadratic formula		2013-01-03
		itsel pose la question : Find the discriminant ans use it to determine the use the quadratic formula to solve the equasion -2x^2+3x+2=0 Penny Nom lui répond.
	Row echelon form		2012-09-05
		Jennifer pose la question : Hello, my name is Jennifer. I am a 12th grader in Pre-Calculus and I was wondering if you may help me with Row Echelon Form. x + 2y - 3z = -5 -2x - 4y - 6z = 10 3x + 7y - 2z = -13 Penny Nom lui répond.
	Exponential form		2012-09-04
		angie pose la question : How do i write 9^-5 in exponential form? Penny Nom lui répond.
	Exponntial form		2012-08-30
		Robin pose la question : My math teacher has asked the question: "Write mmmxxjmyy2 in exponential form" How would you solve this problem? Penny Nom lui répond.
	Golf for 20, two teams of 10		2012-08-30
		Mark pose la question : Hi I have to teams of 10 people playing Ryder cup format(against each other) Can I have all 20 people playing with someone different over 3rounds of golf while remaining on there respective team I.e. players 1 to 10 must team up with a player of that group against a pair for players 11 to 20 I hope you can solve this for me Thanks a bunch Mark Victoria West lui répond.
	Expanded exponential form?		2012-06-12
		Ramon pose la question : express the numbers 990 614 000 005 in expanded exponential form. Harley Weston lui répond.
	The area of a quadrilateral		2012-04-21
		Rajat pose la question : calculate the area ABCD in which AB is 48'1'',BC is 98'4'',CD is 61'4'',DA is 102'10'',AC is 110'3'',BD is 116'9''. Penny Nom lui répond.
	A uniform probability density function		2012-03-26
		Noeline pose la question : The label on a bottle of liquid detergent shows contents to be 12 ounces per bottle. The production operation fills the bottle uniformly according to the following probability density function: f(x) = 8 for 11.975 ≤ x ≤12.10 and f(x) = 0 elsewhere a. What is the probability that a bottle will be filled with 12.02 or more ounces? b. What is the probability that a bottle will be filled between 12 and 12.05 ounces? c. Quality control accepts production that is within .002 ounces of number of ounces shown on the container label. What is the probability that a bottle of this liquid detergent will fail to meet the quality control standard? Penny Nom lui répond.
	Exponential form		2012-01-15
		Helen pose la question : How do you write (1/x) in exponential form? Penny Nom lui répond.
	Three sides of a triangle		2011-12-24
		saba pose la question : the three sides of a triangular lot have lengths 10,11and 13cm,respectively. find the measure of its largest angle and the area of the lot? Penny Nom lui répond.
	Exponential form		2011-12-12
		Zoey pose la question : What is the exponential form of 1/8?? Penny Nom lui répond.
	Uniform acceleration		2011-12-06
		Android pose la question : At a certain instant, two cars A and B are 2000 ft apart. At this instant, car A is traveling at 15 miles/hr. and accelerating at 3 ft/s^2 while B is moving towards A at 30 miles/hr. and an acceleration of 2 ft/s^2. Find the ff: a.) The possible time of their collusion in minutes. b.) The distance in ft. each has traveled before collusion. Penny Nom lui répond.
	2 + f(x) and f(x) + 2		2011-11-21
		Beth pose la question : Do you do y=2+f(x) the same way as if the 2 came after the equation such as y=f(x) +2 when graphing? Penny Nom lui répond.
	A log equation in exponential form		2011-11-11
		Sarah pose la question : Express the equation in Exponential form log2 to the 16th power=4 Penny Nom lui répond.
	A mythical soccer ball		2011-10-27
		Joel pose la question : We've been working on this problem diligently and can't seem to come up with the answer book's answer. We think it may be wrong, yet want to check it with an expert. Here goes. The school's new soccer balls are covered with 64 regular hexagonal panels. Each hexagon measures 2 inches between opposite corners and 1.5 inches between opposite sides. What is the total surface area of the soccer ball? Robert Dawson and Lorraine Dame lui répond.
	Expanded form		2011-10-12
		Chris pose la question : Write this number in expanded form 4 326 180 501 Thanks!!! Penny Nom lui répond.
	Exponential form?		2011-08-30
		Emily pose la question : I have a 6th grader that needs to find out what is the exponential form of 461,885,811 Penny Nom lui répond.
	Exponential form		2011-08-23
		kiara pose la question : The African bush elephant is the largest land animal and weighs about 8 tons . Write the amount in exponential form . Robert Dawson lui répond.
	Exponential form		2011-05-18
		Kara pose la question : How do I write this in exponential form? log 1/8 = -3 Penny Nom lui répond.
	Solve x(x-3) = 5 (x+4)		2011-04-19
		Ashley pose la question : I have to solve using the quadratic formula. And my answer should be in simplest exact form. And I can't approximate. I really need help to prepare for a test .... x(x-3) = 5 (x+4) Penny Nom lui répond.
	If 25 items are evenly spread over 7 days		2011-03-23
		michael pose la question : What is the formula to calculate: If 25 items are evenly spread over 7 days, but one day has 3 items less than the other days, what is the number if items for each of the remaining 6 days? Penny Nom lui répond.
	Vertices and sides of a polygon		2011-03-04
		RINA pose la question : My questions is : would a vertices and sides of a polygon be the same number.  For example, a octagon it has 8 points and 8 sides. Am i correct? Robert Dawson lui répond.
	The equation of a circle		2011-02-14
		Cristela pose la question : find the equation and all the information in General Form and Standard Form of the Circle that will passed trough the point (2,3) (6,1) (4,-3) Stephen La Rocque lui répond.
	(7cubed * 8(exponent6))exponent 6		2011-01-29
		Shalaine pose la question : What is the exponential form of (7cubed•8(exponent6))exponent 6? Penny Nom lui répond.
	The intercept form		2011-01-04
		sussie pose la question : How do you find the intercept form of y=X^2-2x-3? Penny Nom lui répond.
	Exponential form		2011-01-02
		jumana pose la question : find any five examples of exponential form from real life situation Penny Nom lui répond.
	Can determine if it is scalene, isosceles, or equilateral		2010-12-01
		Jessie pose la question : find the measures of the sides of triangle KPL and classify each triangle by its sides. my first problem would be K(-3,2) P(2,1) L(-2,-3) ...The three points they give you are the vertices of the triangle and you need to match them up. Draw the triangle and write in the vertices and the related point with the vertex. You will then do the distance formula three times to find the distance of all three sides. Once you have the three sides you can determine if it is scalene, isosceles, or equilateral...using the distance formula how do i solve this? Penny Nom lui répond.
	Two girls agree to mow a lawn		2010-11-23
		Milorad pose la question : Two girls agree to mow a lawn 60m by 80m so that the first girl cuts one half by cutting a uniform strip around the lawn. How wide a strip should the first girl cut? I've been struggling with the question above, mainly with the equation and I have set it up as 2400=(60-2x)(80-2x), if this is incorrect I would like to know where I've gone wrong and also would like a full answer to see it properly done. I need an algebraic answer and not one with a diagram. Penny Nom lui répond.
	i^i		2010-11-21
		trale pose la question : Can we use e^ix=cosx+isinx for finding i^i like that: x= pi/2 => e^(ipi/2)=0+i then [e^(ipi/2)]^i=i^i.then we find i^i= 0,207879576.... is it true? can we give value for x for free?thank you. Harley Weston lui répond.
	Powers		2010-10-20
		dylan pose la question : how do you write 20736 in exponential form .same for 1728 and 50625. is there a formula to figure out how to express large know numbers in exponential form. Penny Nom lui répond.
	Exponential form		2010-10-06
		celina pose la question : what is the exponential form of 4x*4x Penny Nom lui répond.
	Decimal form		2010-09-08
		Tracy pose la question : What is the decimal form of 0.14 x 10 the the first power? Penny Nom lui répond.
	Exponential form		2010-08-24
		Courtney pose la question : What the Exponential form? For Ex. X2*X5*X4?? Penny Nom lui répond.
	Reflection in the line y = x		2010-07-21
		tousif pose la question : Find the 2 x 2 matrix which represents a reflection in the line y = x? Please help.... Penny Nom lui répond.
	Exponential form		2010-06-16
		charlotte pose la question : what is the exponential form of 6x6x6x5x5x5x5= Robert Dawson lui répond.
	Compound interest		2010-06-01
		Kenneth pose la question : Hello: I have a question regarding the following compound interest and future value calculation. Year 1 P + rP equals balance after the first year. Year 2 (P + rP) + r(P + rP) equals balance after the second year. Year 3 ? equals balance after the third year. This question is in two parts. 1. What would follow for year three? 2. I know that a pattern will develop. What will it be so that I can determine the extended pattern for following years ? Penny Nom lui répond.
	A trig equation		2010-04-28
		Steve pose la question : 2cos^2(X)-2sin^2(x)+1=0 Harley Weston lui répond.
	cos(x) = sin(x - 1)		2010-04-28
		alex pose la question : In the equation cos x = sin x-1 for -pi/2 A: solve for x graphically B: solve algebraically and prove the solution is correct. Alex Penny Nom lui répond.
	If (x, 4) is equidistant from (5, -2) and (3, 4), find x.		2010-04-21
		abeth pose la question : If (x, 4) is equidistant from (5, -2) and (3, 4), find x. Find the point on the y - axis that is equidistant from (-4, -2) and (3, 1). Penny Nom lui répond.
	A model for the population of a Canadian city		2010-04-07
		jess pose la question : Let t^2 represent t-squared. The population of a Canadian City is modelled by: f(t) = 12t^2 + 800t + 40,000, where t is the time in years. When t= 0, the year is 2007. a) According to the model, what will the population be in 2010? B) In what year is the population predicted to be 300,000? Penny Nom lui répond.
	Standard form		2010-03-05
		Laura pose la question : How do I change 3y=4x+1 into standard Ax+By=C standard form. This is my son's schoolwork. I homeschool him. I got the answer to the problem as 3y=4x+1, but it needs to be written in standard form and I know it needs to read 4x-3y=-1, but how do I get that answer into standard form. I need to know how to explain it to him. Can you show me? Thank you so much. Penny Nom 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.
	The graph of f(x)=1/x -2		2009-11-29
		Kapilan pose la question : Please answer the following question: Sketch the graph of f(x)=1/x -2 Harley Weston lui répond.
	A linear equation		2009-10-22
		Ryan pose la question : How do you convert the equation 2x-6y=7? This is on my homework and I am really stuck!!! Penny Nom lui répond.
	Exponential form		2009-09-18
		karen pose la question : Q: Write the following in exponent from: a * a * a * a * * * a, where there are n -1 a's note: *asterisk means times. Penny Nom lui répond.
	The slope-intercept form		2009-09-11
		Shelby pose la question : Write an equation in slope-intercept form of the line that is parallel to the graph of 3y-4x=1 and passes through (0,6) Penny Nom lui répond.
	Exponential form		2009-09-08
		hanna pose la question : hi, well i am really bad in math and i have a math paper and i was just wondering what 3x3x3x3x3 was in exponential form and what is exponential in a way a person like me would understand? Penny Nom lui répond.
	What is 8 tons in exponential form?		2009-09-01
		Tyler pose la question : what is 8 tons in exponential form Penny Nom lui répond.
	Exponential form		2009-08-31
		cecil pose la question : what is the exponent form 564000? Stephen La Rocque and Harley Weston lui répond.
	Exponential form		2009-08-05
		motaz pose la question : Let x = log_2 1/8 Write the exponential form of the equation and solve the equation for x Stephen La Rocque lui répond.
	The Pythagorean theorem		2009-06-24
		supreet pose la question : What are some real-world applications of the Pythagorean theorem? and How are the Pythagorean theorem and the distance formula related? Harley Weston lui répond.
	Completing the square		2009-04-27
		Daniel pose la question : I tried following an example of yours but I still couldn't figure it out. Here is my question, 2x^2 - 6x + 1 = 0. Any help would be greatly appreciated. Stephen La Rocque lui répond.
	The center of an ellipse		2009-04-21
		Nae pose la question : what is the ellipse center of 5x^2+3y^2=15 Stephen La Rocque lui répond.
	A perpendicular line in standard form		2009-04-21
		Kristy pose la question : Can you help me with this equation? Find the equation, in standard form of the line perpendicular to 2x-3y=-5 and passing through (3,-2) With the equation in standard form with all integer coefficient. Stephen La Rocque lui répond.
	Exponential form		2009-04-16
		Pete pose la question : Hi, How do you express ³√h^-4 in exponential form. I am having a lot of trouble with this one. thanks Pete Stephen La Rocque lui répond.
	2sinB=3tanA		2009-04-10
		Xanathax pose la question : ABC is a right-angled triangle. 2sinB=3tanA. Calculate the measure of angle A. Penny Nom lui répond.
	Winding paper after a break		2009-04-10
		Olen pose la question : Question from Olen: I work in a paper mill and have been handed the task to search for a formula to determine how much paper needs to be added to a parent roll to make up the difference at the winder. (Ex. The spool diameter at the reel is 18.25" we measure roughly 33.5" to make two 58" rolls in the winder. If the is a paper break and the roll diameter in the winder is 30" how much do I add to a single parent roll (22" roughly) to make one 58 " and the 28" needed at the winder. I would appreciate any help to complete this task. I would like to be able to build a chart that operators can refer to based on what is needed. Thank you. Harley Weston lui répond.
	A fraction in its simplest form		2009-04-02
		Michael pose la question : I'm in 4th grade and need to express decimals as a fraction in its simplest form. Is there a step by step method to figure out? ex 0.64 = 64/100 = ? 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.
	Time in a Swing		2009-02-22
		Barb pose la question : I looked at the questions concerning a pendulum as I know I need to use this formula but I am stiil not able to figure this problem out. Can you help? If a child is on a swing with a 10 foot chain, then how long des it take to complete one cycle of the swing? I know I am suppose to use the formula 8T^2 = pi^2 L but I do not understand how to do this. Thanks Janice Cotcher lui répond.
	0/0		2009-02-15
		Justin pose la question : Hello, I was just wondering, what is the difference between 0/0 being represented as nullity or as an indeterminate form? Justin Harley Weston lui répond.
	The height of a triangle		2009-02-14
		GARIMA pose la question : IF THE SIDES OF TRIANGLE ARE GIVEN . HOW WE WILL CALCULATE THE HEIGHT OF TRIANGLE. Penny Nom lui répond.
	Faces, edges and vertices		2009-02-04
		sheila pose la question : what is the relationship between the number of faces and the number of edges of a triangular pyramid ? Penny Nom lui répond.
	Transformations		2009-02-04
		Vickie pose la question : Hello, My daughter had a question on her Week By Week about transformations and I can't remember what transformations will result in proportional figures. If a transformation looks like it is smaller what is that called? Also if the figure looks bigger what is that called? Vickie Robert Dawson lui répond.
	What is 301 million in word form?		2009-01-30
		chyamber pose la question : What is 301 million in word form? Penny Nom lui répond.
	Archimedes' formula for parabolic arches		2009-01-23
		La pose la question : Use calculus to verify Archimedes' formula for y=9-x^2. Prove Archimedes' formula for a general parabolic arch. Harley Weston 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.
	The slope intercept form		2009-01-11
		Norma pose la question : write equation in slope intercept form and then find the slope and y-intercpet of the corresponding line. please show step by step 1). 2x-3y-9=0 and 2). 3x-4y+8=0 Penny Nom lui répond.
	What is i^i?		2008-12-27
		randomness pose la question : i have learnt that 'i' is square root of -1. What is then i^i ? It baffles my maths teacher... Robert Dawson and Penny Nom lui répond.
	A line in slope intercept form		2008-12-08
		laurie pose la question : the question: Write and equation of the line that passes through the point and has the give slope. Then rewrite the equation in slope intercept form. (2, 5 ) m= 3 Penny Nom lui répond.
	Gravity's Effect at a Distance		2008-12-06
		ROHAN pose la question : AT WHAT HEIGHT FROM THE SURFACE OF EARTH,THE WEIGHT OF THE BODY BECOMES HALF? (RADIUS OF THE EARTH = 6400) Stephen La Rocque lui répond.
	The height of an equilateral triangle		2008-11-06
		touqeer pose la question : My question is that how can we find the height of an equilateral triangle without using pythagoras theorem? Penny Nom lui répond.
	Exponential form		2008-10-21
		layla pose la question : how we wite 256 in exponential form Harley Weston lui répond.
	I have 6 vertices and 10 edges		2008-10-20
		Jacquelin pose la question : I have 6 vertices and 10 edges. One of my faces is a regular polygon. Chris Fisher lui répond.
	3,6,10,15,and 21		2008-09-28
		jarred pose la question : i am currently stumped on a math project that requires me to find out the recursive formula for a sequence of numbers. the numbers in the sequence are 3,6,10,15,and 21. Thank you for your time. Walter Whiteley lui répond.
	The standard form Ax+By=C		2008-09-26
		Susan pose la question : I am having difficulty changing the point-slope form of the equation of the line y-y1=m(x-x1) to the standard form Ax+By=C. You must express A,B,C in terms of the constants m,x1,y1. I have been able to insert numbers and switch easily from the general to the point slope equation, but I am stumped on how to convert it this way. Penny Nom lui répond.
	Exponential form		2008-09-25
		Pat pose la question : The African bush elephant is the largest land animal and weighs about 8 tons. Write this amount in exponential form. Penny Nom lui répond.
	Exponential form		2008-09-16
		shawn pose la question : Write the product in exponential form: 5.5.5.2 Penny Nom lui répond.
	A line through two points		2008-09-10
		Conor pose la question : Find the equation of the straight line which passes through the points (-2,14) and (8,-1) Penny Nom lui répond.
	1,679,616 as a power of 6		2008-09-03
		Denise pose la question : express 1,679,616 in exponential form as a power of 6. Penny Nom 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.
	A linear function		2008-08-07
		Warren pose la question : What are the conditions of the numerical coefficients of the standard form Ax+By=C in Linear Function? How will you transform y=square root of 3 x + 1 in standard form Ax+By=C? Penny Nom lui répond.
	Time with Non-Uniform Motion		2008-07-21
		jenina pose la question : An unmarked police car, travelling a constant 95km/h, is passed by a speeder travelling 145km/h. precisely 1.00s after the speed passes, the policeman steps on the accelerator. If the police car’s acceleration is 2.00m/s², how much time elapses after the police car is passed until it overtakes the speeder (assumed moving at constant speed)? Janice Cotcher lui répond.
	A Falling Rock		2008-07-11
		Rita pose la question : This question has 3 parts. If a rock falls from a height of 20 meters on the planet Jupiter, its height H (in meters) after x seconds is about H(x) = 20 - 13x^2 (a) What is the height of the rock when x = 1.2 seconds? (b) When is the height of the rock 15 meters? (c) When does the rock strike the ground? Thank you Janice Cotcher lui répond.
	Exponential form		2008-07-03
		Kent pose la question : How to write 8 365 005 106 in expanded and exponential form? May I request you also to explane how does it solve. Stephen La Rocque lui répond.
	Write log_2 (1/8) = -3 in exponential form		2008-06-27
		Jaime pose la question : how do you write log2 (1/8) = -3 in exponential form? the 1/8 is a fraction and the 2 is a base of 2 Penny Nom lui répond.
	Percent difference?		2008-06-14
		Cathy pose la question : I am trying to verify a "percent of difference" as stated on a tax form. I cannot seem to come up with the equation to do so. Here are a few examples on the form: Last year $62.91 this year $66.05 tax difference $3.14 percent difference -5.64% Last year $ 2014.97 this year $1982.93 tax difference $-32.04 percent difference 57.56% Last year $97.66 this year $79.58 tax difference $-18.08 percent difference 32.48% I have tried several different ways and per some of Q&A's already on your site I still have a problem and would appreciate some assistance. Thanks-Cathy Penny Nom lui répond.
	-2(x - 1)^2 + 8		2008-06-12
		kasondra pose la question : y=-2(x-1)2[thats a square] +8 that need to be put in standard form the answer is y= -2x2 -4x + 6 i got y= -2x2 -4x -4 i just don't get how my teacher got that answer Penny Nom lui répond.
	A recursive formula for 9, -18, 36, -27, ...		2008-06-05
		Rita pose la question : I am having trouble understanding how to write formulas (I should say create formulas) from a given sequence. It does not matter what sort of sequence it is. The confusion remains. I have not found a textbook or easy math book that explains this process for the average Joe to grasp. Here are the two questions: (1) Write a recursive formula for the sequence 9, -18, 36, -72, ... (2) Write a recursive formula for the sequence 3, 3(sqrt{3}), 9, 9(sqrt{3}) Penny Nom lui répond.
	The cube of -2y in exponential form		2008-05-19
		Xiu pose la question : I dont get this question.. Write "the cube of -2y" in exponential form. I know the answer is -(2y)^2 but i really don't understand why. Can you explain how to do this whole problem for me? Leeanne Boehm lui répond.
	The standard form of an ellipse		2008-04-30
		Rebecca pose la question : I have to write the following equation into standard form of an ellipse: 9(X-1)^2 + (Y+1)^2 = 1 Stephen La Rocque and Harley Weston lui répond.
	The slope intercept form		2008-04-11
		Dave pose la question : Hi, why is there a y-intercept in the slope intercept form?What does the y-intecept have to do with the equation? Penny Nom lui répond.
	A shape		2008-04-03
		Joshua pose la question : what shape has 4 faces, 4 corners and 9 edges. Penny Nom lui répond.
	The exponential form of x radical y to the third power		2008-03-30
		Jennifer pose la question : what is the exponential for of x radical y to the third power Penny Nom lui répond.
	A linear system		2008-03-10
		sandhiya pose la question : one group of people purchased 10 hotdogs and 5 soft drinks at a cost of $12.50. a second group bought 7 hotdogs and 4 soft drinks a ta cost of $9.00 find the cost of a single hot and a single soft drink.(using the row echelon form to solve) Penny Nom lui répond.
	Row echelon form		2008-02-21
		cOCO pose la question : USE ELEMENTARY ROW OPERATIONS TO WRITE THE MATRIX BELOW IN ROW ECHELON FORM. 1 1 8 - 2 2 -1 1 11 2 1 14 -11 Penny Nom lui répond.
	The equation of a line		2008-02-17
		Jennifer pose la question : Given the point A(3,2)B(5,8) find the equation of the line AB ( in standard form ) Penny Nom lui répond.
	Exponential form		2008-02-16
		annna pose la question : i already got the answer for what is the prime factorization of 648 which is 2x2x2x3x3x3x3 but how do i write that answer in exponential form? Penny Nom lui répond.
	The standard form of a line		2008-01-30
		Thomas pose la question : I'm attempting to get this in standard form slope=3;(1,5) Penny Nom lui répond.
	The standard form of a line		2008-01-24
		James pose la question : I need to put it in Standard from ax+by=c the problem is (-4,0); parallel to y=-2+1 how can I put this in Standard from Stephen La Rocque lui répond.
	The equation of a line		2008-01-20
		Sara pose la question : The question is: Write the equation of a line that is parallel to y=3x-2 through the point (-5,9). I think the correct equation for this is y=3x+24. But I have to write it in standard form, and I can't seem to figure out how to do that. Please answer soon! Thanks! Stephen La Rocque and Penny Nom lui répond.
	How do I write the following in exponential form?		2008-01-09
		Mandy pose la question : How do I write the following in exponential form? ( square root of a^-2 b)^5 Penny Nom lui répond.
	Exponential form		2008-01-08
		liam pose la question : i was wondering if anyone could help me with this question and tell me how and what the did; exponetial form of 4 326 180 501 Stephen La Rocque lui répond.
	The area of a piece of property		2008-01-05
		Greg pose la question : I need to know the area of a six sided piece of property. I sent a map by regular mail. Harley Weston lui répond.
	Multiplying exponentials		2008-01-02
		jessie pose la question : Can you please explain how to put x^3 y^2 times x^1 y^3 in simplest exponential form? Penny Nom lui répond.
	Radicals in exponential form		2008-01-02
		Andre pose la question : The title of the section in my textbook is to write each of the following radicals in exponential form. My question is how do u write the squareroot of 10 in exponential form? Penny Nom lui répond.
	Shooting an arrow over a wall		2007-12-11
		Amy pose la question : The path of a large arrow fired from a non torsion catapult can be modeled by y=-0.0044x^2 + 1.68x, where x is the distance the arrow travelled (in yards) and y is the height of the arrow (in yards). Given the height of a castle wall, find the safest distance from the wall to launch an arrow over a 120 yard-high wall. Victoria West and Stephen La Rocque lui répond.
	Exponential form		2007-11-30
		Sasha pose la question : How do I write the number 127398 in exponential for? Penny Nom lui répond.
	Transformations and compositions		2007-11-29
		mary pose la question : Is there any possible relationship between composite functions and the concept of function transformations? Harley Weston lui répond.
	Area of a 17-sided lot		2007-11-21
		Lynda pose la question : My uncle is wanting to buy this piece of land [a 17-sided polygon] but we are questioning the acerage total. the measurements are [on the attached diagram]. Stephen La Rocque lui répond.
	Exponential form		2007-11-16
		ashley pose la question : write a sentence for exponential form. Penny Nom lui répond.
	The height of a triangle		2007-11-03
		William pose la question : I need to find the height of a triangle if the base is 15, one side is 14 and the other side is 13. Stephen La Rocque and Penny Nom lui répond.
	How to solve related rates problems		2007-10-27
		David pose la question : Can you plz explain how and where you come up with an equation to solve this? Find the rate of change of the distance between the origin and a moving point on the graph of y = sin x if dx/dt = 2 centimeters per second. Stephen La Rocque lui répond.
	Area of a triangle formed by three points on a graph		2007-10-26
		Betty pose la question : My question is 'find the are of a triangle whose vertices have coordinates (3,5),(6,-5), and (-4,10) Stephen La Rocque lui répond.
	A triangular lot		2007-10-17
		Brian pose la question : Seeking the square footage of a triangular property lot, dimensions are: 620 X 620X 720. Penny Nom and Melanie Tyrer lui répond.
	Four triangles in a square		2007-10-15
		Kristina pose la question : A square with side lengths of 6 cm is divided into 3 right triangles and a larger isosceles triangle. If the three right triangles have equal area, find the exact area of the isosceles triangle. Stephen La Rocque lui répond.
	Triangle perimeter and area		2007-10-05
		divakar pose la question : The sides of the triangle are integers. The perimeter is 8. What is the area? Stephen La Rocque lui répond.
	Find the equation of a line given two points		2007-10-05
		Tiffany pose la question : The equation for the line through the points (11,2) and (18,12) can be written in the form Ax+By=C. Find A and B. Victoria West lui répond.
	Exponents		2007-09-26
		Calvin pose la question : Exponential form 5 3exponent x 5 4exponent divide 5 2exponent Stephen La Rocque lui répond.
	Exponential form		2007-09-12
		Ericha pose la question : How do I express 1,679,616 in exponential form as a power of 6 using a calculator? Stepehe La Rocque and Penny Nom lui répond.
	Prime factors in exponential form		2007-09-06
		Michelle pose la question : how would you write this: factor 48 as a product of primes written in exponential form Stephen La Rocque lui répond.
	Exponential form		2007-09-05
		jeanette pose la question : the African bush elephant is the largest animal and weighs 8 tons. write this amount in exponential form. Stephen la Rocque and Penny Nom lui répond.
	Exponential form		2007-08-31
		Victoria pose la question : The cost of each space shuttle is about $10,000,000. Write this amount in exponential form. Stephen La Rocque lui répond.
	Exponential form		2007-08-29
		Emily pose la question : Write the Exponential Form of 125 x 25 and 81 x 27. Stephen La Rocque lui répond.
	Point-slope form		2007-08-16
		jenny pose la question : write an equation in the point-slope form and the intercept form slope=4,passing through (1,3) slope=8,passing through (4,-1) slope= -5,passing through (-4,-2) slope= -2,passing through(0,-3) Leeanne Boehm lui répond.
	Can you solve this by factoring? 10r^2 - 35r = 10		2007-08-12
		Aranxa pose la question : how do u solve this equation by factoring: 10r^2 - 35r = 10 Stephen La Rocque lui répond.
	A statistics example		2007-08-02
		Claudia pose la question : A particular employee arrives to work some time between 8:00 am - 8:30 am. Based on past experience the Company has determined that the employee is equally likely to arrive at any time between 8:00 am - 8:30 am. On average, what time does the employee arrive? What is the standard deviation of the time at which the employee arrives? Find the probability that the employee arrives exactly at 8:12 am? Find the probability that the employee arrives between 8:20 am - 8:25 am? Har lui répond.
	A complex number in polar form		2007-07-23
		roland pose la question : write the given complex number z in polar form lzl(p+qi) where lp + qil=1 for 3 - 4i. Harley Weston lui répond.
	Calculating the area (acreage) of a four sided lot		2007-07-18
		A property owner pose la question : I have a real estate property and the lot size is something I need to find out. I know the lengths of the four sides, but it isn't a rectangle, it is an odd shape. How do I find the acreage? Stephen La Rocque lui répond.
	Algebraic EquationsAx+By=C		2007-07-02
		Juan pose la question : The general "Standard" form of an equation is Ax+By=C. Re-Write this equation in slope-intercept (y=mx+b) form. Harley Weston lui répond.
	Using Heron's Formula to help maximize the area of a triangle		2007-06-27
		Claire pose la question : Given one side of a triangle is 4 cm and the ratio 1:3 for the other 2 sides. What is the largest area of the triangle? Stephen La Rocque and Harley Weston lui répond.
	Exponential form: x^y		2007-06-22
		Kishor pose la question : whats the easy way to calculate X raised to Y where y is much greater than x. Stephen La Rocque lui répond.
	Rewrite 2x+4y+2=3y+5 in general form		2007-06-21
		dawn pose la question : how do you rewrite 2x+4y+2=3y+5 in general form? Stephen La Rocque lui répond.
	Circumscribing a golden cuboid with a sphere: surface areas		2007-06-14
		Ainslie pose la question : A golden cuboid is defined as a rectangular prism whose length, width and height are in the ratio of phi : 1 : 1/phi. Prove that the ratio of the Surface Areas of the golden cuboid to that of the sphere that circumscribes it is Phi : Pi. Stephen La Rocque lui répond.
	Angles of depression		2007-06-13
		Phonda pose la question : The pilot of a small private plane can look forward and see the control tower for a small airstrip. Beyond that is a large factory that is 3 milies from the airstrip. The angles of depression are 12.5 degrees and 4.8 degrees respectively. Find the airplane's altitude, to the nearest ten feet. Stephen La Rocque lui répond.
	Solving a quadratic equation using the Quadratic Formula		2007-06-05
		Stuart pose la question : Solve the following quadratic equation: 3xsquared-5x-4=0 Stephen La Rocque lui répond.
	Finding the area of a lot without knowing the angles		2007-06-05
		Cristin pose la question : I have a land-locked piece of land. I need to know the square footage in order to determine the acreage. My deed only gives the lengths of its five sides. Stephen La Rocque lui répond.
	Radical form		2007-04-18
		Cassia pose la question : Hi Um, I had a question for algebra, I'm just curious of how to put x^3/8y^1/4 in radical form. Can you help me? Stephen La Rocque lui répond.
	Exponential form		2007-04-16
		Cassia pose la question : I was just wondering, how do you write the squared root of 7x(to the 5th) in exponential form? If you could help explain that I'd be grateful. Thanks Brennan Yaremko lui répond.
	A rotated rectangle		2007-04-16
		Graham pose la question : There is a circle inside which from the centre to the top is a rectangle. Size is unimportant. If I the rectangle is at 0 degrees and I know the co-ordinates of the 4 corners I can do a check to see whether a given point x,y is inside the rectangle or not. Question : If the rectangle is rotated by 50 degrees how do I check then as the lines of the rectangle are not perfectly straight with regards to x and y ie at 0 degrees x changes but y is constant and vice versa. At 50 degrees x and y change together. Penny Nom lui répond.
	The area of a parcel of land		2007-04-03
		Ricky pose la question : I need the attached land parcel (#0436) converted to acreage. This would be of great help to me. Thanks, Ricky Penny Nom lui répond.
	The area of an irregular pentagon		2007-03-26
		grace pose la question : hi I am doing graphics and need to find the area of the section given to us (it is just drawn). the sides measure 15m, 35.4m, 5m, 17.8m, 35.7m. the angle between the 15m side and the 35.4m side is 17degrees, the angle between the 35.4m side and the 5m side is 73degrees. the angle between the 5m side and the 17.8m side is 151degrees, the angle between the 17.8m side and the 35.7m side is 90degrees and the angle between the 35.7m side and the 15m side is 95degrees. if you could tell me the area i would be extremely grateful. thanks very much. Penny Nom lui répond.
	y-intercept form		2007-03-16
		Ken pose la question : Simple way on how to convert to & from y-intercept form & Std. form. Eg: Convert into y-intercept form: 3x+4y+7=0, Eg.: Convert into Std. Form: y=-1/2x +3, y=50x +300. I would appreciate your help in this matter, as I find it hard to understand. Kind Regards: Ken Penny Nom lui répond.
	Triple angle tangent formula		2007-03-15
		sam pose la question : Hi I am trying to derive a triple angle formulae for tan. I know i need to use compound and double angle formulae but am finding it difficult to "clean" up my fraction to get the triple angle formulae can you show me a worked derivation?! thanks Penny Nom lui répond.
	The area of a property		2007-03-14
		Greg pose la question : Hi my name is Greg. I have a piece of property I am trying to buy, but need to find out the square feet of it first. The four sides are unequal lengths and none at a right angle or parallel. Here are the measurement in feet. The base of the square is 29.12 feet in width. The right side of the square is 44.33 feet high. The top of the square is 28.80 feet in width. The left side of the square is 46.20 feet high. I have not done this math in ages and really need your help. Harley Weston lui répond.
	Finding the x-intercept		2007-03-02
		Ash pose la question : Y = -1/100X^2 =27/10X +0 = 0 THE Y INTERCEPT IS 50 HOW DO I FIND THE X INTERCEPT Gabriel Potter lui répond.
	sin(3a), cos(3a) and tan(3a)		2007-02-28
		mailene pose la question : hi, i...indeed,to..need..your..help how..cn..i..prove..this,formula??? sin3a=3sina-4sin^3a cos3a=4cos^3-3cosa tan3a=3tan-tan^3a /1-3tan^2a the..symbol...^is..the..expOnent Haley Ess and Penny Nom lui répond.
	Find the area of the triangle		2007-02-20
		Christina pose la question : Graph the function f(X)= x+1/x-1 and graph the tangent line to the function at the points A:(2,3) and B:(-1,0). The point of intersection of the two tangent lines is C. Find the area of the triangle ABC. Stephen La Rocque lui répond.
	What constitutes a face for a geometric solid?		2007-02-14
		Erica pose la question : What constitutes a face for a geometric solid? We have been getting conflicting answers from different textbooks. Some teachers are saying that cylinders and cones do not have faces. I'm thinking that cylinders have 2 and cones have 1. Please enlighten me. Thanks! Walter Whiteley lui répond.
	Exponential form of complex numbers		2007-02-12
		Austin pose la question : When dealing with imaginary numbers in engineering, I am having trouble getting things into the exponential form. The equation is -1+i now I do know that re^(theta)i = r*cos(theta) + r*i*sin(theta). Just not quite understanding the order of operations. Thanks Penny Nom lui répond.
	Irregular multi sided polygon		2007-01-20
		Graham pose la question : I have an irregular polygon. I know the length of all the sides and know approximately all the internal angles. Is there a formula or table that can calculate the area for me? Steve La Rocque, Chris Fisher and Penny Nom lui répond.
	The slope-intercept form		2007-01-04
		Earnestine pose la question : Given a line containing the points (1,4), (2,7), and (3,10) determine the slope-intercept form of the equation, provide one additional point on this line, and graph the function. Penny Nom lui répond.
	The slope-intercept form		2006-12-17
		Anthony pose la question : I'm really confused with this, tried to figure it out on my own but i can't seem to grasp it here's the problem: Two points are given a. Write an equation in slope-intercept form for the line containing the two points. b. Graph the line from Part a and check that both points are on the line. Penny Nom lui répond.
	The slope-intercept form		2006-11-08
		Kilihea pose la question : I need to graph this equation but first need to turn it into a slope-intercept form. 6x - 3y = -3 I would really appreciate it if you could help me turn it into a slope-intercept form. Penny Nom lui répond.
	Putting things in exponent form		2006-10-18
		Sheila pose la question : Write in exponential form 2 sq. root a with an exponent 5. I do not understand on how to do it. Stephen La Rocque lui répond.
	Convert a standard form to a slope intercept form		2006-09-14
		Maiko pose la question : I need to know step by step procedures to convert a standard form to a slope intercept form? Penny Nom lui répond.
	The area of an irregular octagon		2006-08-23
		Billy pose la question : How do you figure the area of an irregular octagon? Measurements are 4 equal sides of =BD", and 4 equal sides of =BE". It measures 1 1/2" = from flat to flat. Penny Nom lui répond.
	How old is y = mx + b?		2006-07-05
		Beckie pose la question : I am taking intermediate algebra this summer (Math 95), and have a question for you. My instructor will award extra credit points to any of us who find out how old the formula y = mx+b is. Would you happen to know the answer? Penny Nom lui répond.
	The area of a triangle		2006-05-21
		A student pose la question : how do you find the area of a triangle? Penny Nom lui répond.
	10^100 in binary form		2006-05-10
		Headmaster pose la question : How many digits has the number 10100 if we write it in binary form? Chris Fisher, Paul Betts and Steve La Rocque lui répond.
	A hallway in an old house		2006-05-06
		Sabrina pose la question : I am trying to determine how many square feet is in a room that is not square or rectangular. It has basically 5 walls of different lengths, it is acutely considered a hallway in an old house, how can I figure out the footage, the Length times Width requires to much wasted materials Penny Nom lui répond.
	The perimeter of a regular octagon		2006-04-20
		Martin pose la question : I would like to make an octagon out of 2x4 lumber. I know that the lumber needs to be cut at 67.5 degree angles, but how do I determine the length of each piece if I want to make, say, a 2.5 ft diameter octagon? Stephen La Rocque lui répond.
	cos(3X)		2006-03-29
		Joshua pose la question : I'm having trouble proving that cos(3X)=cos3X -(cosX)(sin2 X) Penny Nom lui répond.
	The area of a block of land		2006-03-26
		Ronald pose la question : I have a building block of land with four unequal sides and only one right angle. I want to know the total area (in metres) and how the calculations were carried out. The four sides are: Rear of property: 9.14 metres left side: 36.9 metres Right side: 32.61 Metres front to street: 27.43 Metres The front to street and right side constitute a right angle. but there are no others. Penny Nom lui répond.
	The quadratic formula		2006-03-03
		Miriam pose la question : Please show work and indicate "answer", using the quadratic formula - (x+2) (2x+3) = 6 penny Nom lui répond.
	Is there a solid shape with 5 faces, 8 edges, and 4 vertices?		2006-02-11
		Annie pose la question : Is there a solid shape with 5 faces, 8 edges, and 4 vertices? Penny Nom lui répond.
	y - y1 = m(x - x1)		2006-01-08
		Greg pose la question : How do you change 2x + 3y = 7 into y - y1 = m(x-x1)? Penny Nom lui répond.
	Area of a lot		2005-12-03
		Ben pose la question : How do you calculate the area of the following Lot? I figured the following angles from the deed, which read: N 86 degrees, 45 minutes E, for 322 feet. S 10 degrees, 30 minutes W for 113 feet. N 84 degrees, 30 minutes W for 368 feet. N 50 degrees, 42 minutes E for 76 feet. N 40 degrees, 40 minutes E for 15 feet. There is a discrepancy between two surveyors and I'd like to figure out how to calculate the Area of such a shape. Harley Weston lui répond.
	I = PRT		2005-11-16
		Ryan pose la question : Use the formula to find the value of the variable that is not given: I=PRT;I=$2880, R=0.08, P=$12,000 Penny Nom lui répond.
	Prove that a rhombus' diagonals are perpendicular		2005-10-02
		Tania pose la question : How do you prove that a rhombus' diagonals are perpendicular using the 2 column proof method? Walter Whiteley lui répond.
	The area of a lot		2005-08-29
		Richard pose la question : My wife and I are interested in buying property in Idaho but the owner can't give us a square footage of the lot. The dimensions are as follows: 121.0 on the left side 157.0 on the right side 135.0 on the bottom 162.0 on the top The bottom right corner of the lot is a true right angle, the rest are not. Penny Nom lui répond.
	The area of a lot		2005-07-17
		John pose la question : A plot of land has the following dimensions: 391 ft. x 757 ft. x 208 ft. x 788 ft. Q: How many acres is this? Harley Weston lui répond.
	sin x + sin 2x + sin 3x + sin 4x = 0		2005-05-10
		Elia pose la question : I tried many times, but can't get to solve the following question: sin x + sin 2x + sin 3x + sin 4x = 0 Chris Fisher lui répond.
	Some triangle problems		2005-05-06
		A student pose la question : 1.use the heron's formula to find area of triangle ABC to nerest tenth A.a=21 b=28 c=11 B.a=23 b=28 c=12 2.Find the nearest tenth the altitude of the longest side if a=3 b=3 c=5 3.the length of each side of a rhombus is 10 cm the length of one diagonal is 12 cm find the area to the nearest square centermeter Penny Nom lui répond.
	Bayes Theorem		2005-04-03
		wei pose la question : In the January 11,1988,issue of the Oil&Gas Journal, R.A.Baker describes how the Bayesian approach can be used to revise probabilities that a prospect field will produce oil. In one case he describes, geological assessment indicates a 25% chance the field will produce oil. Further,there is an 80% chance that a particular well will strike oil given that oil is present on the prospect field. Suppose that one well is drilled on the field and it comes up dry. What is the probability the prospect field will produce oil? If two wells come up dry, what is the probability the field will produce oil? The oil company would like to keep looking as long as the chances of finding oil are greater than 1%. How many dry wells must be drilled before the field will be abandoned If the first well produces oil,what is the chance the field will produce oil? Andrei Volodin and Penny Nom lui répond.
	A torus and a sphere		2005-03-27
		Tony pose la question : Is it possible to shrink a torus into a sphere? Andrei Volodin and Penny Nom lui répond.
	The area of a quadrilateral		2005-02-27
		Jonathan pose la question : I want to know how to find the area of a quadrilateral. Penny Nom lui répond.
	Finding the missing side of a triangle		2005-01-20
		Jason pose la question : I found a geometry problem that reads as follows:In triangle ABC, Penny Nom lui répond.
	A sequence of transformations		2005-01-03
		Abraham pose la question : Please go to this web site and look at number 31. http://www.nysedregents.org/testing/mathre/matharch/mathbtestau02.pdf That is the New York state education web site. Can you tell me if my answer would be marked correct? My answer was Transformation of 4,-3 (T 4,-3) followed by a reflection in the x-axis.If I graphed the question and wrote that, would I get full credit Harley Weston lui répond.
	The area of a triangle		2004-12-30
		Perry pose la question : What is the area of a triangle with dimensions 3"X5"X7"? Could you provide the formula? Penny Nom lui répond.
	The point slope form of a line		2004-10-26
		Jack pose la question : Given a set of ordered pairs, ie (1,1) (2,4) (3,7), how does one determine the rule f(n) other than by trial and error Penny Nom lui répond.
	sin(3A)		2004-10-20
		A student pose la question : Express sin3A in terms of sinA and cosA. Penny Nom lui répond.
	Finding the height of a triangle		2004-09-14
		A student pose la question : I have to calculate the height of a triangle. The base is 6 (units)say ab One of the top sides is 4 (units)say ca The other side is 2 (units) say cb I don't know the angles. How to find the height? Chris Fisher and Penny Nom lui répond.
	The distance formula		2004-09-04
		Joe pose la question : Why do we use square roots and squares in the distance formula Wholdnt they cancel each other out? Claude Tardif 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.
	Some trig expressions		2004-05-23
		A student pose la question : Prove: sin A + sin B = 2sin(A+B/2)cos(A-B/2) cos A - cos B = -2sin(A+B/2)sin(A-B/2) cos A + cos B = 2cos(A+B/2)cos(A-B/2) sin A - sin B = 2cos(A+B/2)sin(A+B/2) Penny Nom lui répond.
	An oil-drilling platform		2004-04-27
		Alie pose la question : An oil-drilling platform is located in the Gulf of Mexico 3.25 miles from the nearest point on shore. From a point B on the shore due east of A the bearing of the platform is S51.2W. How far is it from B to the platform? Penny Nom lui répond.
	Dividing zero by infinity		2004-01-08
		Jason pose la question : What do you get when dividing zero by infinity? Our Calculus teacher was pretty sure that the expression was indeterminate from. However, if this is so...Why? Zero divded by any number (except zero) is zero, true. Any number (except infinite) over infinite is zero. So, why isn't Zero divided by infinite zero. A simpler way if I had 4 potatoes and was to split them among 2 friends, each friend would get 2 potatoes. However, if I had 0 potatoes and split them a infinite number of ways, each person would still have 0. Explain please! Penny Nom lui répond.
	The area of a plot of land		2003-12-19
		David pose la question : I have a plot of land that I cannot find the square footage of. Actually my home sits on a large lot. Local building codes require that a home is seated on no less than 7500 square feet of land and have no less than 50ft of road frontage (the rear of the lot has 65ft of frontage on another road). I need to know if I have enough square footage to build a second home on the rear lot. The lot has five sides. Only one angle is a 90 deg. angle. The others I cannot determine. Of the 4 remaining angles, all 4 angles are obtuse, or greater than 90 deg. The dementions are 89.19' x 130' x 118.52' x 65' x 170.94'. The two legs that make the 90 deg angle are 89.19' and 170.94'. The measurements fall in order using the 90 deg angle as the point of origin and proceeding clockwise, 89.19', 130', 118.52', 65', 170.94'. I have used all the skill I can muster, however, it has been a long time since school and regretably I cannot find an answer. Penny Nom lui répond.
	The area of a triangle		2003-12-01
		A student pose la question : Find the Area of Triangle ABC A(-3,2) B(4,0) C(0,8) Penny Nom lui répond.
	The volume of an irregular tetrahedron		2003-11-24
		Peter pose la question : How do I calculate the volume of an irregular shaped tetrahedron where:- side a = 1.4 m side b = 1.4 m side c = 1.2 m and height = 0.75 m at the junction of sides a and b. Penny Nom lui répond.
	Indeterminate forms		2003-10-06
		A teacher pose la question : Is it possible for me to find any geometrical interpretation without using calculus to explain indeterminate forms? Chris Fisher lui répond.
	Notation		2003-09-15
		Kim pose la question : Question: i have a couple of questions 1. write in standard form a)4x2x8 b) 5 to the power of 4 . . . Penny Nom lui répond.
	The quadratic formula		2003-08-31
		Alex pose la question : I am using Houghton Mifflin's Precalculus with Limits book, 2nd edition. However, the first chapter encompasses Algebra review, and I am stuck on a problem. All that's required is to solve the following and verify using a calculator: 3y2+6y+2=0 I have solved the problem using the quadratic formula, but from what I remember, the quadratic formula is used in the case of equations following the AX2+BX+C=0 pattern. As the problem I am attempting uses a y-variable, can I still use the quadratic formula? Since I am not sure what route to take in solving this problem, I am hoping you can assist me. Harley Weston lui répond.
	A rule with a variable		2003-08-24
		Crystal pose la question : what is a rule with a variable Penny Nom lui répond.
	Write sin(3x) in terms of sin(x)		2003-05-05
		A student pose la question : Write sin 2x in terms of sin x Penny Nom lui répond.
	Finite differences		2003-02-10
		Jenny pose la question : I need to find a formula that will work with any number. I am finding the volume of a 3d cross- shape. Here are my results so far: Term Number 0 1 2 3 4 5 nth term 1 7 25 63 129 231 1rst diff 6 18 38 66 102 2nd diff 12 20 28 36 3rd diff 8 8 8 I can't seem to find a formula that will work with any number. Any help would be much appreciated. Penny Nom lui répond.
	Transformations of pattern blocks		2003-02-06
		Cheryl pose la question : I am trying to help my 8th grade son with Transformations - use of patttern blocks. He has to trace a figure and reflect it across the x-axis, which I can do, but then it indicates include ordered pairs - that confuses me. 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.
	Performance reviews		2002-11-21
		Lara pose la question : Perhaps you can help. He's doing performance reviews at work. The average performance review is 3.92 on a 5.0 scale. This person would receive a 3.5% raise for next year. The highest performance review is 4.9 and this person would recieve a 6.0% raise for next year. How do I solve for the other performance review numbers. Penny Nom lui répond.
	Formulating equtions		2002-09-14
		Theresa pose la question : Hello. In math class we have to formulate equations for certin questions for extra credit. We are allowed to ask anyone and anyone can do it for us and explain it to us. Could you please do that? Here are the questions Jordan has 3 times as much money as Reva. Together they have $44. How much money does each have? The Tigers played 48 games. They won twice as many as they lost. How many did they win? There are 900 students in Sewickley Academy. There are 20 more girls than boys. How many girls are there? A board 400 cm long is cut into 2 pieces. One piece is 66 cm longer than the other. Find the lenght of the shorter piece. Penny Nom lui répond.
	The quadratic formula		2002-09-11
		Kathleen pose la question : im having a problem trying to understand quadratic formulas can u please help me i have problems like 3x2 - 4x - 11 = 0 how do i work out that problem? i have the formula written down but it doesnt seem to register for me. Penny Nom lui répond.
	The area of a triangle		2002-09-07
		Phill pose la question : How do you find the area of a equilateral and other triangles? Penny Nom lui répond.
	1/8 in decimal form		2002-09-04
		A student pose la question : explain how you put 1/8 in a decimal form Penny Nom lui répond.
	Distance in 3-space		2002-08-16
		David pose la question : The question is: how do I figure out the distance of one object in 3D space to another object in 3D space? I have an object at say x = 5.872, y = 2.876, and z = 7.290; and the other object is at x = 1.129, y = -8.213, and z = -11.127. I have been suggested to use the pythagorean theory on this, but since there are three variables, I don't understand how. Penny Nom lui répond.
	The area of a circle		2002-06-03
		Jessica pose la question : I am doing a maths assigment for university, which is aimed towrds primary school students(k-6). I was wondering if you could give me some information as to how I could describe to students the rule for finding the area of circle, using a circle cut up into equal sectors (like a pizza). I know it has something to do with the fact that you can make these shapes into a parallelogram, but I am a bit uncertain as to how I can express this idea clearly and articulately to students. Penny Nom lui répond.
	A triangular prism		2002-04-28
		A student pose la question : Need the formula for the surface area of a triangular prisim? Penny Nom lui répond.
	Area of a triangle		2002-04-07
		Puzzled pose la question : What is the surface area of a triangle 13 ft x 13 ft x 18 ft? Penny Nom lui répond.
	sin 2x = cos 3x		2002-02-25
		Allan pose la question : solve: sin 2x = cos 3x Primary question: how do you handle the cos 3x? Paul Betts and Chris Fisher lui répond.
	Rolling 5 sevens before rolling a six or an eight		2002-01-20
		Tony pose la question : When rolling 2 dice, what is the probability of rolling 5 sevens before rolling a six or an eight? Andrei Volodin and Penny Nom lui répond.
	Exponential form		2001-12-11
		Crystal pose la question : Hi, I am asking a question on behalf of a homeschooling grade 11 student. She is having trouble with changing something like (3-4)2 into a exponential form. First of all she needs to know what the term means "exponential form" and then the process of it. Penny Nom lui répond.
	Slope intercept form		2001-11-27
		A student pose la question : what is slope intercept form? Penny Nom lui répond.
	Rewriting and evaluating formulas		2001-11-19
		A conserned mother pose la question : Due to the wide range of temperatures experienced in Canada, engineers who construct roads must allow for expansion and contraction of the road surface. The following formula is used to calculate the amount of expansion E to allow for: E= kL(T-t), where k is the constant of expansion for the road surface. L is the length of the section of highway in metres. T is the temperature of the air in degrees Celsius. t is the temperature, in degress Celsius, at which the section of the highway was constructed. Walter Whiteley lui répond.
	Fourier transform		2001-08-07
		Adbul pose la question : Sir, we have the Dirichlet's condition for the Fourier transform : " The function should be integral over the real line " But why we are we neglecting this for example when we take the Fourier transform of an impulse train? Suppose we want to travel from one corner of a square of side 'a' to the diagonally opposite corner. We can travel along the sides which gives a pah length of '2a'. We can also do it in steps as shown below: _ | |_PATH | |_ |_____| Suppose The step size =DELTA x Then the path length will be again '2a'. Now in the limit DELTA x -->0 again we get '2a' But when we take the limit we get the straight line diagonal whose length is 'SQRT(2)X a' Where did I go wrong? Chris Fisher lui répond.
	Conformable matrices		2001-08-05
		Wayne pose la question : Can someone explain the concept of conformable matrices in a way that is easy to understand ? One definition says to multiply matrices rows and columns must conform, ie, 5 x 3 matrix times a 3 x 5 matrix. In the next example, however a 8 x 1 matrix and a 8 x 3 matrix are said to be conformable! Steve Kirkland lui répond.
	Exponential form		2001-06-06
		A student pose la question : Hello can u please answer my question what is the exponent form of 8x8x8x8 Penny Nom lui répond.
	New Quebec reform		2001-05-24
		Marie-Andrée pose la question : I am a middle school teacher beginning to adapt to the new Quebec reform. I am regularely doing projects in écologie and géographie in French immersion based on the international schools way of thinking (What form does it have? How does it work? What is its history? How does it change? How is it linking to our lives? What is our responsibility about that fact or that thing?) and I have real difficulty to make it work for math. So now, I am looking for math concepts (8) which would link to the same way of thinking. What are your suggestions? Claude Tardif lui répond.
	Faces		2001-02-21
		Sandy pose la question : How many faces are there on a sphere? What are the faces of a cone? What is the definition of a "face" of a 3D object? Walter Whiteley lui répond.
	An irregular polygon		2001-02-09
		Jason pose la question : I have a 5 sided irregular polygon I am trying to figure out the area of. There are no right angles in the polygon as far as I can tell. I do not know any angles. Chris Fisher lui répond.
	A problem with distance		2001-01-16
		A student pose la question : For what values of a is the distance between P(a, 3) and Q(5, 2a) greater than the square root of 26. Penny Nom lui répond.
	Euler's Formula		2000-11-11
		Denise Roberts pose la question : I'm trying to design a unit (possibly involving a Webquest) on Polyhedra and I cannot find a formula I once used. The formula involved the number of vertices (V), edges (E), and faces (F) of the polyhedra. Walter Whiteley lui répond.
	A cycloid in Cartesian form		2000-09-20
		Billy pose la question : The parametric equation of cycloid is given: x=r(t-sint) y=r(1-cost) How to eliminate t? Harley Weston lui répond.
	A conic in standard form		2000-05-18
		Tara McConkey pose la question : Im havign trouble converting the following conic to standard form, i know that the conic is a hyperbola but that is all 16x2-9y2-160x-18y+247=0 Harley Weston 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.
	Polar coordinates		2000-02-24
		Tran Trung pose la question : How do I convert r = 2/(2sin(theta) - 3cos(theta)) to rectangular and x2 + y2 -2y = 0 to polar form? Harley Weston lui répond.
	Triple angle formula		2000-02-23
		Sara pose la question : Can one derive a triple angle formula for sine and cosine? If so, how? Chris Fisher lui répond.
	Derive the quadratic equation		2000-01-01
		Thuy pose la question : My teacher asked us this question in which i can't understand when she asked to derive the quadratic equation. What does this mean? Penny Nom lui répond.
	Bases other than 10		1999-12-06
		Garret Magin pose la question : We are doing a lesson on numbers of other bases than 10. We are working with binary, octal, and Hexadecimal. I was wondering what is used to represent number of different bases other then 16? Does it just continue on with the alphabet and if so what happens when you get to Z. It would be a help if you could answer this because it is really bugging me. And none of the math teachers at my school could let me know. Claude Tardif and Patrick Maidorn lui répond.
	A Trigonometry Question		1999-08-28
		Diane Simms pose la question : My question is can the following be factored. I am a teacher who needs the factors to this right away. 2 Sin2X + 2 SinX CosX - 1= 0 Harley Weston lui répond.
	Shape-preserving transformations		1999-05-04
		J McAndrew pose la question : A shape preserves its shape if a rotation, translation or scaling is performed on it. Are these the only continuous transformations which have this property? These transformations if performed on the parts and then summed have the same effect as the transformation being applied to the whole; are these linear transformations? Who, and what area of mathematics has classified all transformations of this type completely? Chris Fisher lui répond.
	Standard Form		1999-03-30
		Pam pose la question : How do you put this equation into standard form? y=3.572x+5.409 Would you please put this equation in this form Ax+Dy+C=0 Penny Nom lui répond.
	The Quadratic Formula		1999-01-22
		Eric Morgan pose la question : Hi my name is Eric Morgan and I m in 8th Grade honors math (middle) and I'd like to know how to prove the quadratic formula -b±sqrt of b(a)(c)over 2(a) Penny Nom lui répond.
	Complex numbers and the quadratic formula		1998-12-25
		Richard Peter pose la question : My age is 16, and my name is Richard. My question relates to the topic complex numbers & the quadratic formula. I would like to know how to solve quadratic equations in which the discriminant is less than 0 (i.e. we get two complex solutions to the quadratic) 3x2+2x+5 = 0 and how mathematicians like euler contributed to this field. If it would be possible I would also like to know how this type of quadratic equations can be graphed? Harley Weston lui répond.
	Indeterminate forms		1998-12-11
		R. Dixon pose la question : What is the correct evaluation of infinity/0 ? I've checked three different math sites. One says definitively, that infinity/0 is "not" possible. Another states that infinity/0 is one of the indeterminate forms having a large range of different values. The last reasons that infinity/0 "is" equal to infinity. Walter Whiteley and Harley Weston lui répond.
	The bricklayers formula		1998-11-24
		Rachel Kaplan pose la question : I have to do a report on the bricklayers formula N = 7LH. Can you give me any information on this. Harley Weston lui répond.
	Area of a triangle.		1998-02-01
		Jodi Blucher pose la question : Is there a formula for the area of an equilateral triangle knowing the length of the sides? Chris Fisher and Harley Weston lui répond.
	Equivalent Expressions		1997-02-26
		Karyn Jones pose la question : Josie says that s=n/(n+1) and s/(1-s)=n are two ways to write the same formula. Describe whether or not you agree with Joise. Explain how you made your decision. Walter Whiteley and Penny Nom lui répond.
	Deriving the Quadratic Formula		1997-02-04
		James pose la question : How do you derive the quadratic formula? I know what it is, but the textbook doesn't say how to derive it. Penny Nom lui répond.
	Why is lbs the abbreviation for pounds?		1996-10-03
		Nancy Mutdosch pose la question : What does lbs stand for? Why is it the abbreviation for pounds? Chris Fisher lui répond.

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