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	The substitution method		2020-06-10
		Hardebolar pose la question : simultaneous equation by substitution method .a-b=2/3 a+b=1 2/3 p lui répond.
	Solve sinX=0.703X for X		2018-03-13
		PARAM pose la question : sinX=0.703X Penny Nom lui répond.
	A cubic equation		2016-07-25
		Chinmay pose la question : x³-2x²-7x+5 Penny Nom lui répond.
	The height of a parabolic arc		2015-12-30
		Tom pose la question : Is there an algebraic means to determine the highest point of a parabolic arc if the base and perimeter are known? Penny Nom lui répond.
	The positive root of sin(x) = x^2		2015-12-13
		Kemboi pose la question : Find the positive root of the equation sin(x) = x^2 Penny Nom lui répond.
	The method of elimination		2015-05-01
		oreanna pose la question : Question from oreanna, a student: How do u solve 2x+9y=3 7x-4y=-25 in elimination Penny Nom lui répond.
	1/6k=-11		2014-11-13
		Marty pose la question : Using the balance method, what is the answer to 1/6k=-11, trying to find what k equals. Thanks Penny Nom lui répond.
	The method of elimination		2014-07-05
		leo pose la question : please explain how can i solve this problem 3x-6y=-38 6x-9y=44 using elimination and simultaneous method thank you :) Penny Nom lui répond.
	x - 2 Sin[x] = 0		2014-05-08
		chanmy pose la question : please help me to sole this equation x - 2 Sin[x] = 0,thank you Penny Nom lui répond.
	n log n = 36 * 10 ^ 12		2013-11-12
		shihab pose la question : How to find value of n in this equation : n log n = 36 * 10 ^ 12 Penny Nom lui répond.
	Four equations		2013-08-08
		may pose la question : HI how to solve this 4 equations? A+C = 0 -4A+B-8C+D=1 3A+16C-8D=-29 -12A+3B+16D=5 Robert Dawson lui répond.
	Solve sin 3x = -0.1254 with x between o and 360 degrees		2013-02-21
		David pose la question : sin 3x = -0.1254 0 Harley Weston lui répond.
	Solve sin 3x = -0.1254 with 0		2013-02-21
		David pose la question : sin 3x = -0.1254 0 Harley Weston lui répond.
	Sinx=logx+x^2		2012-11-28
		yasmin pose la question : Sinx=logx+x^2 Harley Weston lui répond.
	A volume of revolution		2012-07-15
		Tewodros pose la question : Let f(x) = e^x and g(x) = x^1/2 both be defined on [0,1]. Consider the region bounded by f(x), g(x), x = 0, x = 1. Rotate this region about the y-axis and determine the volume using the shell method. Harley Weston lui répond.
	Using Newton's Method to find a root		2012-04-09
		Nancy pose la question : Use Newton's method to find the real root function, accurate to five decimal places f(x) = x^5+2x^2+3 Penny Nom lui répond.
	Four apples and two oranges cost Rs. 30...		2012-01-13
		nasr pose la question : Four apples and two oranges cost Rs. 30, and one apple and 3 oranges costs Rs.15.How much does each apple and each oranges cost? Harley Weston lui répond.
	A volume of revolution		2012-01-11
		john pose la question : find volume of solid generated by revolving the region in the first quadrant bounded by the curve y squared=x cubed, the line x=4 and the x-axis about the line y=8. The answer in the back of the book is 704 pi divided by5 Penny Nom lui répond.
	Eliminate y		2011-04-07
		Lynn pose la question : 2x + y = 8 y + 3z =5 z + 2w =1 5w + 3x = 9 Form three equations with y eliminated Penny Nom lui répond.
	The percent-day method		2010-12-04
		Kenneth pose la question : I read about this method in an old business mathematics book and was curious about how it works to produce the correct answer. “Percent-day method is based on 360 days’ time and 1% interest. Any interest rate multiplied by any number of days is equal to so many %-days.” Example: 82 days at 5% equals 410%-days. Penny Nom lui répond.
	Elimination and substitution		2010-09-18
		Lauren pose la question : Solve one using the method of substitution and the other with the method of elimination. v a. y=5x+4 x=2y+1 b. 4x+3y=7 6x-3y=13 Penny Nom lui répond.
	A logarithmic equation		2010-09-08
		Rohit pose la question : x^2 + k*ln(x) - c - k = 0 Where k and c are constants. Penny Nom lui répond.
	x/a +y /b =a+b : x/a^2+ y/b^2 =2		2010-05-30
		smithu pose la question : x/a +y /b =a+b : x/a2+ y/b2 =2 solve by using elimination method , cross multiplication, substitution method Penny Nom lui répond.
	Arc length and Chord length		2010-03-13
		Darryl pose la question : Is there a formula to determine the chord length of an arc knowing only the arc length and the arc depth (sagitta)? I know you can't find the radius with only these two inputs, but can you find the chord length? Harley Weston lui répond.
	Substitution method		2010-02-17
		Melodie pose la question : 7x - 4y = -10 4y= x-2 Tyler Wood lui répond.
	Linear programming using the Simplex Method		2009-12-28
		William pose la question : A gold processor has two sources of gold ore, source A and source B. In order to keep his plant running, at least three tons of ore must be processed each day. Ore from source A costs $20 per ton to process, and ore from source B costs $10 per ton to process. Costs must be kept to less than $80 per day. Moreover, Federal Regulations require that the amount of ore from source B cannot exceed twice the amount of ore from source A. If ore from source A yields 2 oz. of gold per ton, and ore from source B yields 3 oz. of gold per ton, how many tons of ore from both sources must be processed each day to maximize the amount of gold extracted subject to the above constraints? I need a linear programming solution or algorithm of the simplex method solution. Not a graphical solution. Thanks. Janice Cotcher lui répond.
	A linear system		2009-10-20
		marissa pose la question : Solve this linear system 2x-y=5 3x+y=-9 Penny Nom lui répond.
	541.39(1 + i)^15 = 784.09		2009-10-14
		Fitore pose la question : Hi, I noticed that this question was already posted up, however I was hoping I could solve it without having to use logs. Can you please help me? The equation is: 541.39(1 + i)^15 = 784.09 Penny Nom lui répond.
	Elimination method		2009-10-08
		Kenty pose la question : How do I solve this problem using the elimination method? 3x-7y=0 6x+4y=0 I am not sure how so if someone can show me a similar problem (instead of solving this one for me) that would be fantastic. Penny Nom lui répond.
	Two equations in two unknowns		2009-09-18
		Citizen pose la question : x+-3y=7 -x+4y=7 Penny Nom lui répond.
	The method of substitution		2009-09-17
		laura pose la question : ok! i really need help with this question plz help!! x= - 4y +5 x+2y = 7 Penny Nom lui répond.
	Find the central angle		2009-08-18
		Larissa pose la question : In a circle, the length of a chord AB is 4 cm and the length of the arc AB is 5 cm. Find the central angle theta, in radians, correct to four decimal places. Then give the answer to the nearest degree. I think I'm supposed to use Newton's method, but am not sure how to start with this problem. Harley Weston lui répond.
	Linear systems		2009-02-20
		Rose pose la question : I have been having trouble trying to figure out these three math problems , I need help breaking them down so I could understand them better please help. 1. x = 7 - x 2 x - y + 8 2. 8 x + 5 y = 1 8 4 x - y = 3 3. y + 2 x = 3 y + 2 x = 4 I can't figure out how to break them down in the right order. Penny Nom lui répond.
	The substitution method		2009-02-18
		Nicolette pose la question : I am working on linear programming problems that I need to solve pairs of linear equations for. I am confused and am not sure how to solve these problems! 5x+3y=7      y=x-3 How can i solve this using the substitution method? Penny Nom lui répond.
	The substitution method		2009-02-06
		amber pose la question : Pleasse help me with this problem x+y=-2 y-2x=1 Penny Nom lui répond.
	System of equations - comparison method		2009-01-02
		nick pose la question : Hi, I am doing a project on system of equations by using comparison method, but for some reason or another, i can't seem to find any information on the comparison method at all. So, please would you help me by giving me a website that you know of that has some information on my method. And, if you know the answer, can you please tell me why or when do we use system of equations by using comparison method? Thank You Robert Dawson lui répond.
	The substitution method		2008-07-26
		Enid pose la question : Solve by substitution method 3x + 7y = 25 -7x + y = 63 Penny Nom lui répond.
	x^3-6x^2+3x+5=0		2008-05-22
		faiz pose la question : x3-6x2+3x+5=0 Janice Cotcher and Harley Weston lui répond.
	Integrate 2x(x^2-1)^5 dx		2008-04-17
		joey pose la question : pls help me to integrate 2x(x^2-1)^5 dx using the substitution u=x^2-1 Harley Weston lui répond.
	Estimate the cube root of 270		2008-03-11
		Tom pose la question : (a) By plotting suitable graphs, estimate to one decimal place the cube root of 270. (b) With reference to your answer to part (a), use 8 iterations of a Bisection Search to refine your estimate. Use the nearest whole numbers either side of your estimate from part (a) as starting values. (c) Using either of your starting values from part (b) as first guess, use the Newton-Raphson method to find the true value of the root (to 6 decimal places). Repeat using the other starting value from part (b) and compare the two results. Harley Weston lui répond.
	How would one find the radius?		2007-12-29
		Ned pose la question : Given an arc with length of 192 inches (don't know chord length), and arc height of 6 inches, how would one find the radius? Stephen La Rocque and Harley Weston lui répond.
	Solve sin(x)=x^2-x		2007-12-11
		ming pose la question : is there anyway you can solve sin(x)=x^2-x without a calculator? Stephen La Rocque lui répond.
	Chicken and goat feet		2007-12-05
		Kim pose la question : Old McDonald raises goats and chickens. The animals have a total of 100 heads adn 360 feet. How many goats and how many chickens does Mr. McDonald have? Stephen La Rocque and Penny Nom lui répond.
	Substitution method		2007-10-11
		Kevin pose la question : 3xx+2y=-36-y=11 Stephen La Rocque lui répond.
	Two equations in two unknowns		2007-09-22
		Mary pose la question : Having problems doing this problem, looking for a solution with the work. I would like to see how you got your answer, to see what I was doing wrong. solve using the substitution method, is there "no solution" or "infinitely many solutions" 4x+y=4 2x+8y=0 Stephen La Rocque and Leeanne Boehm lui répond.
	The substitution method		2007-06-23
		mary pose la question : solve the system by the method of substitution: -5x+2y=-15 4x-y=9 Stephen La Rocque lui répond.
	Simultaneous equations : the Elimination method		2007-06-21
		Patricia pose la question : I need to find the value of X and Y using the Elimination method. 5/x + 3/y=4 25/x-2/y=3 Stephen La Rocque lui répond.
	The substitution method		2007-05-08
		A student pose la question : I need help on these two problems( substitution method) -2x+7y=10 x-3y= -3 and 6x-8y= -12 -3x+4y=9 Penny Nom lui répond.
	A volume of revolution		2007-04-08
		christina pose la question : find the volume of the solid formed when region bounded by y=x/3, y=2 and the y-axis. it is revolved about the x-axis. the assignment was to use both the washer method and the shell method but when i solved for the volume, i got different answers. i think my shell method is wrong because i know i'm having difficulties with using "dy" instead of "dx" here's my work so far: Penny Nom lui répond.
	Factoring a trinomial		2007-03-27
		Kim pose la question : Hi, could you please help me solve this. 3x(squared) +20x - 7 Leeanne Boehm lui répond.
	The substitution method		2007-01-31
		Victoria pose la question : how do i solve this problem using the substitution method? 2x-5= -14 -7x+14y= -5 Stephen La Rocque lui répond.
	The elimination method		2007-01-31
		Addrianna pose la question : x-2y=2 3x-5y=7 Stephen La Rocque lui répond.
	A linear system		2007-01-04
		Harold pose la question : System A (4, 2/3) 2x-3y=6 and x-3y=2 I approached this problem using the addition method. Could i have found the answer using the graphing method? Penny Nom lui répond.
	Linear systems		2006-09-21
		Alexander pose la question : Hello, i have a math assignment due tonight at midnight and i need some help please It is using the addition method to solve linear systems Penny lui répond.
	The area of a sector and a triangle		2006-06-23
		Howard pose la question : I thought of the following problem which is similar but much simpler than the tethered goat problem: What is the angle(it is more illustrative in degrees)of arc of a unit circle so that the area between the chord it subtends and the arc length is equal to the area of the triangle with opposite side the subtended chord. Stephen La Rocque and Penny Nom lui répond.
	The interior angles of a right triangle		2006-05-20
		Greg pose la question : I am wondering if there is a way to figure out the interior angles of a right triangle if we know ONLY the side lengths, and the trick is, we CANNOT use arctangent! Leeanne Boehm and Penny Nom lui répond.
	GCF, LCM, primes and the ladder method		2006-01-07
		Linda pose la question : How would I teach both finding the GCF and LCM with prime factors...I recall the ladder method vaguely.??? Penny Nom lui répond.
	The substitution method		2004-11-28
		A student pose la question : I Was working and i ran into this problem can you help me solve it using the substitution method? -3x-2y=-10 x+5y=-27 Penny Nom lui répond.
	Square roots and inequalities		2004-10-25
		Waheed pose la question : Q1. What is the simplest way of finding a square root of any number using just a pen and paper? (I am asking this question because I browsed a few sites a didn't find any method that is simpler than the one I use. so I am just curious.) Q2. Is it possible that you take an equation and turn it into an inequality by performing same mathematical operations on both sides? Claude Tardif and Penny Nom lui répond.
	The method of substitution		2004-09-20
		Kayla pose la question : y=x-1 y=2x-3 Harley Weston lui répond.
	The substitution method		2004-02-14
		Keisha pose la question : I need to solve this problem by using the substitution method. 3x+y=1 x=2y+5 Please help me understand the method to solve. Penny Nom lui répond.
	Systems of equations		2003-11-19
		Scott pose la question : I hope that u can help me....I am a college student taking a class in Pre Calculus.....I have homework due this Friday and it counts a BIG Percentage on my FINAL grade.....I am getting mixed up and can not figure out a few problems.....Please help me..... Method Of Subsitution Problem 1. y- 8x = -5 x(squared) + y(squared) = 25 Problem 2. y = x(squared) - 2x - 6 Y = x(squared) - 4 Penny Nom lui répond.
	Substitution method		2003-09-14
		John pose la question : Hello, my name is john and while I was finishing up my work I stumbled into these problems. a/4-b=-1 a+b=11 and 6a-b=-5 4a-3b=-8 Thanks a lot. I really need some help :) John Penny Nom lui répond.
	The substitution method		2002-02-24
		Joe pose la question : whats the answer to this question? 3x+y=11 x+2y=-3 its substitution method i am having alot of trouble figuring it out. send the answer as soon as possible. thank you Penny Nom lui répond.
	Solving x - sin(x) = constant		2000-12-29
		Keith Roble pose la question : If x is in radians, how do you solve for x, where: x-sin(x) = constant? Harley Weston lui répond.
	Question about 3rd degree polynomials		1999-04-23
		Patrick Bryan pose la question : What is the general solution to the equation with the form: a*x^3 + b*x^2 + c*x + d = 0 I have once seen a solution to this a few years ago, but I do not recall if it was a general solution. What I do know, is that you could simplify this equation to: a*x'^3 + p*x' + q = 0... Doug Farenick lui répond.
	Duplation method of multiplication		1998-11-26
		Sara Whitford pose la question : I am wondering why 16 and multiples of 16 do not work in the ancient duplation method of multiplication used by the Egyptians. I discovered the method in the Journeys math text gr 7 level. Just curious. Am I doing something wrong?? Jack LeSage and Harley Weston lui répond.
	Linear systems of equations		1998-11-16
		Crystal Girvan pose la question : My name is Crystal Girvan.Im in grade 11. I have a question.We are solving linear systems of equations: comparison method. My questions is. it says a)use the method of comparison to solve this system a=b-1, 3a+ b=3 b) verify your solutin in a I dont understand it. please help Jack LeSage lui répond.
	Operations Research		1998-10-08
		Lisa Barrett pose la question : What is the history of operations research and the study of linear programming? Judi McDonald lui répond.
	Volumes		1998-08-29
		Lorraine Wall pose la question : Consider the region in the first quadrant bounded by the x and y axes, the vertical line x=3 and the curve y = 1 / (x squared + 3). Determine the volume of the solid by rotating this region about the x-axis. Now that is the first part. I then have to find the coordinates of the centroid of the solid by rotating this region about the x-axis. Thanks. Lorraine Harley Weston lui répond.
	Volumes of Revolution		1998-07-24
		Lorraine Wall pose la question : I'm on the section fpr The Computation of Volumes of Solids of Revolution and the following question is giving me problems: -Consider the region in the first quadrant bounded by the x-and y-axes, the vertical line x=3, and the curve y=1/(xsquared + 3) I can determine the volume of the solid by rotating the region about the y-axis using the shell method but I can't seem to be able to get started with the volume when rotated about the x-axis. Harley Weston lui répond.
	Cardano's method		1996-03-11
		Mike Gorski pose la question : What is Cardano's method for finding the roots of a cubic equation? Harley Weston lui répond.

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