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April 23, 2014

Search: equations

Number of results: 9,516

Math
Do you mean dependent of independent equations? It depends upon how many equations and variables there are. If any of the equations are dependent on (derivable from) others, and there are at least as many variables as equations, then the system of equations in underdetermined ...
Tuesday, June 3, 2008 at 4:00pm by drwls

Chemistry
When solving Hess law problems,do we need to use all the equations given to get the Htotal or just choose the relevant equations that are related to the final equation required? Let's say there r 5 equations given,but the relevant equations are 3 only ,so we can neglect the ...
Friday, March 23, 2012 at 2:22am by Meenaakshi

Math 116
Consider the following system of equations. y=2x-2 y-2x=9 What can you conclude about the system of equations? a. The system of equations is inconsistent. b. The system of equations is dependent. c. The system of equations is independent. d. none of these.
Friday, June 21, 2013 at 12:19am by Queta

Math 1
Consider the following system of equations. y = 4x - 4 y - 4x = 3 What can you conclude about the system of equations? A) The system of equations is inconsistent. B) The system of equations is dependent. C) The system of equations is independent. D) none of these
Sunday, October 20, 2013 at 9:31pm by sam

algebra
That's one of your equations, but a system of equations is two equations. Find the other using the ticket pricing.
Sunday, November 25, 2007 at 8:20pm by Michael

Chemistry
What are the equations for these two equations? Not net ionic equations. a) Nickel (II) chloride and iron b) Sodium and water
Saturday, October 12, 2013 at 11:04pm by Matt

Chemistry
No, like in balancing equations when they give me word equations,I would write the equations out correctly but I don't know when to add charges to them.
Wednesday, February 4, 2009 at 7:31pm by Chopsticks

Math
The goal here is to 1st form 2 equations containing 2 variables, then use those to eliminate another variable. The first 2 equations can be formed from any 2 of the given equations.
Monday, January 11, 2010 at 7:51pm by Marth

Algebra
Translate to a system of equations. DO NOT SOLVE. A nontoxic scouring powder is made up of 4 parts baking soda and 1 part vinegar. How much of each ingredient is needed for a 16-oz mixture? What are the two equations? For most problems, I can easily find the info for the two ...
Thursday, February 19, 2009 at 4:05pm by Tessa

New Age Math
The two equations, based on your fill-in-the-blanks above are, 25x + 35y + 54z = 8277 x + y + z = 236 Are you sure this is the exact problem as written? Are far as I know, this problem cannot be solved to get an exact number for x, y and z . To solve simultaneous equations in ...
Sunday, February 6, 2011 at 10:32am by helper

math
Explain why the simultaneous equations y=1/2x+2 and 2y-x:4 have an infinite number of solutions. What is diffrent about these equations compared with the equations in the first question ( the equations were y=2x+3 and 5y-10x=5)? What is similar? ( include work to prove why and...
Thursday, February 24, 2011 at 4:19am by CJ

math
solve the simultaneous equations to find the coordinates of the point of intersection for the pair of lines of the simultaneous equations. Then check the answer by graphing the equations 3x-y=-4 2x-y=0
Saturday, October 16, 2010 at 9:19pm by Lauren

Expresion and Equations?
Equations always have an equal sign. That is why they are called equations. They both can have letters (which stand for unknowns), numbers and signs indicating mathematical processes.
Thursday, September 10, 2009 at 8:30pm by PsyDAG

math
Consider the following system of equations. Y = 3x 7 Y - 3x = 5 a) The system of equations is inconsistent. b) The system of equations is dependent. c) The system of equations is independent. d) none of these
Sunday, January 27, 2013 at 4:40pm by monet

Algebra 2
1.) Write a system of equations that has NO solution. 2.) If you wanted to eliminate the y variables in the system of equations below, what would you multiply the first and second equations by?( Do not solve the equation) 2x-3y=8 7x-4y=11
Wednesday, October 3, 2007 at 11:30am by Audrey

Algebra 2
1.) Write a system of equations that has NO solution. 2.) If you wanted to eliminate the y variables in the system of equations below, what would you multiply the first and second equations by?( Do not solve the equation) 2x-3y=8 7x-4y=11
Thursday, October 4, 2007 at 9:25am by Audrey

Algebra 2
1.) Write a system of equations that has NO solution. 2.) If you wanted to eliminate the y variables in the system of equations below, what would you multiply the first and second equations by?( Do not solve the equation) 2x-3y=8 7x-4y=11
Friday, October 5, 2007 at 10:46am by Audrey

algebra
solve the system of equations by graphing. Then classify the system as consistent or inconsistent and the equations as dependent or independent. x+y=14 x-y=2 What is the solution of the system of equations?
Sunday, March 23, 2008 at 4:00pm by anaya

math
How do you solve system of equations and tell if they're consistant and independant,consistant and dependent,and inconsistant? If you find no solutions then the system is inconsistent. Suppose you have N variables and M equations (N larger than or equal to M). Then, if you ...
Friday, July 27, 2007 at 1:31pm by maddie

Algebra
Set up a system of equations to model this situation. (Note that a system of equations is TWO different equations.) Let x be the number of 37-cent stamps, and let y be the number of 20-cent stamps. What two equations did you get?
Sunday, November 25, 2007 at 9:57pm by Michael

Math
You seem to have more than two equations in two unknowns. The system of equations is overdetermined and has no solution. The first two equations are inconsistent. y -2x cannot be two different numbers, 6 and -10.
Friday, March 7, 2008 at 9:47am by drwls

chemistry
I have been debating for two hours on how to answer. The question is silly. There will be no equations except for testing standards, then those equations will only involve the dimensions of the material to be tested. Rubber is not a material which lends itself to exactness, as...
Thursday, October 16, 2008 at 7:19am by bobpursley

Algebra
If we note that there is a +3y and a -3y in each of the equations, we simply add the two equations to get: 5x=-15, or x=-3 Substitute x=-3 in either one of the equations to get -3-3y=-9 -3y=-6 y=2
Tuesday, May 24, 2011 at 9:07pm by MathMate

Math
It's a straight forward pair of simultaneous equations. In this example just add the two equations to cancel out the y and find the x value. Once you have the x value sub it back into one of the equations to find y. Hope that helps
Tuesday, March 17, 2009 at 8:46pm by GanonTEK

8th grade math
Parallel equations have the same slope. y = mx + b Perpendicular equations have a reciprocal and opposite slope. There is more to these questions than space allows here. Go to Khan Academy to view video's on how to do these equations.
Sunday, March 4, 2012 at 9:18pm by Jo

math
Look for the variable that has the "easiest" coefficients. take any two equations, by multiplying by suitable constants, get the coefficients of one variable to be the same, then subtract the two equations. take any other pair and by targeting the SAME VARIABLE, multiply by a ...
Monday, October 20, 2008 at 9:58pm by Reiny

alegebra
solve the system of equations by graphing. then classify the system as consistent or inconsistent and the equations as dependent or independent. 3u+v=13 3u=v+29 What is the solution of the system of equations?
Sunday, March 23, 2008 at 5:27pm by anaya

Math - system of equations
write two other equations that have the same solution as this system od equations. 3x-4y=-14 -x+3y=18 I found the solution to the system it is (6,8) there after how do i go about it?
Tuesday, September 7, 2010 at 2:01pm by Shaila

algebra uno help + check?
I think you are totally wrong. Take the last one. -x+2y=9 here are some equivalent equations: 2y-9=x x+9=2y 14y=63+7x Equivalent equations are equations that have the same solution.
Monday, November 29, 2010 at 4:42pm by bobpursley

Math
System of equationS (plural) The solution is the set of values of the different unknown variables that satifies all equations. This solution can usually be found if the number of equations equals the humber of unknown variables.
Tuesday, May 17, 2011 at 10:19am by drwls

Math-Equations
Please check your original post for an answer before reposting. This question has been answered. You were given the equations. Now, it is up to you to solve these equations simultaneously. If you post your answer I will check for correctness.
Sunday, February 6, 2011 at 8:01pm by helper

Math
How do I write the Symmetric Equation of a line given the following parametric equations: (where t is a scalar) x=0t y=0t z=1+1t I know normally I would solve each equation for t and set the equations equal to one another. However, I can not solve for t in the first two ...
Wednesday, November 3, 2010 at 10:36pm by Dwight

Math
How do I write the Symmetric Equation of a line given the following parametric equations: (where t is a scalar) x=0t y=0t z=1+1t I know normally I would solve each equation for t and set the equations equal to one another. However, I can not solve for t in the first two ...
Thursday, November 4, 2010 at 11:34am by Dwight

Math
Write two equations that have your two integers as solutions. Show how you built the equations using your integers, numbers used 5 and 8. Solve your system of equations by the addition/subtraction method. Make sure you show the necessary 5 steps.
Wednesday, September 28, 2011 at 10:54am by Klint

College Algebra
Solve the system of equations with ROWOPS program. I know how to do the first step but after that it gets difficult for me, this is the system of equations: 3x + y - z = 1 x + 2y - z = 0 2x - y + z = 4 I used to be able to do these but now I'm getting a little rusty. Thanks ...
Thursday, August 2, 2007 at 10:47pm by Rebecca

engineering
Using mechanics of materials principles, (i.e. equations of mechanical equilibrium applied to a free-body diagram), derive the following equations: s = s cos2q = s[(1+ cos 2q) / 2] t' = s sinq cosq = s [sin 2q / 2] s=sigma, q=theta, t=tau I have looked in "Theory of ...
Monday, October 18, 2010 at 5:06pm by Bob

Calculus
At the local min/max points, the derivative is zero. f' = 3ax^2 + 2bx + c = 0 Plug in x = -3 and x = 2, and that gives you two equations. Also, use f = ax^3 + bx^2 + cx + d Plug in the values (x = -3, f = 3) and (x = 2, f = 0). That gives you two more equations. Now solve the ...
Monday, November 12, 2012 at 6:05pm by PayDay

Math Systems
problem 1 in the equation x - y = 1, solve for x in terms of y. replace x in either of the other two equations and you will be able to solve for x. Now, you can go back to any of the three equations and replace x with the value you found and solve for y. Check that your ...
Saturday, April 6, 2013 at 6:39pm by Ollie

Chemistry
the question says 'for the following equations????...where are the equations??..i can't see any equations.. anyway..the first one is calcium carbonate???? so the ionic equation for its formation is; Ca2+ + CO32- --> CaCO3 whereas Fe(SCN)2+ is; Fe3+ + SCN- --> Fe(SCN)2+
Tuesday, June 11, 2013 at 12:03pm by bonjo

Math
I am stuck on trying to figure out how to do this question. Could someone please show me 5 necessary steps ? Thank you. Here is how the assignment question is worded. Select any two integers between -12 and +12 which will become solutions to a system of two equations. Write ...
Wednesday, February 9, 2011 at 9:30pm by Tiffany

math
how do i solve two step equations? Do you mean two equations in two unknowns? The method of substitution is one way. There is a good tutorial here: http://www.themathpage.com/alg/simultaneous-equations.htm
Thursday, January 18, 2007 at 10:35am by megan

Equations and variables
Doesn't algebratic reasoning depend on symbols that can be manipulated in balanced equations?
Wednesday, March 26, 2008 at 11:15pm by bobpursley

Math
set the two equations up as simlutaneous equations and solve by substitution.
Tuesday, April 14, 2009 at 5:23pm by Riley

ALGEBRA 2
A system of equations does not have a unique solution when the equations are not linearly independent. The equations are linearly independent if none of the left-hand side of the equations can be represented as a linear combination of the others. If we add equations (1) and (3...
Sunday, July 22, 2012 at 6:09pm by MathMate

biology
I need help figuring out how to balance scientific equations well what are the equations?
Monday, October 30, 2006 at 7:13pm by ccw

Math 8 HELP!
Multi-Step Equations Systems of Equations y = 2x - 4 y = x - 1 please help!!! :'(
Wednesday, January 30, 2013 at 8:34pm by Laruen

Vectors
How to solve a system of equations if there are FOUR equations with THREE unknowns?
Wednesday, August 28, 2013 at 11:48pm by vectors123

Chemistry
COMPLETION AND BALANCING OF EQUATIONS Complete and balance the following equations: 1. ZnCl2 + AgNO3
Wednesday, March 7, 2007 at 1:03pm by Muhammad Ahsan KHan

Chemistry
COMPLETION AND BALANCING OF EQUATIONS Complete and balance the following equations: 1. ZnCl2 + AgNO3
Wednesday, March 7, 2007 at 1:07pm by Muhammad Ahsan KHan

Math
Find parametric equations and symmetric equations for the line of intersection of the given planes. x + y + z = 2, x + z = 0 X=1 y = Z= x=, y=
Tuesday, April 13, 2010 at 1:58am by Mike

Physics
both equations .. d=vt d=1/2 a t^2 distances are the same, set the equations equal, solve for t.
Wednesday, September 25, 2013 at 8:44pm by bobpursley

alegebra
Solve the system of equations by graphing. Then classift the system as consistent or inconsistent and the equations as dependent or independent. 3x-y=14 3x+4y=-26 What is the solution of the system of equations? Type an ordered pair.N for no solution R for the solution if real...
Sunday, March 23, 2008 at 4:08pm by anaya

math
The general form of the equations are (4/3)x+y=(1688/3) (-9/40)x+y=(19577/40) (5/12)x+y=(-3929/12) but then when I use the incenter(p,q)and express it for distance and set the equations equal to each other i get different things when I set the first 2 equations together than I...
Monday, April 20, 2009 at 9:04pm by kelly

math
Petie--I gave you two equations yesterday and told you to solve the two simultaneous equations. Matmate gave you some very good directions as a way to approach word problems. Perhaps you need to review the mechanics of how to solve simultaneous equations, also.
Thursday, December 24, 2009 at 12:25pm by DrBob222

Algebra Quadratic Equations
What are the pros and cons of completing the square as a way to solve quadradic equations?
Friday, February 15, 2008 at 7:31am by Marysvoice

Linear Equations
Solve the following system of equations by the substitution method. 8x = 2y + 5 3x = y + 7
Tuesday, March 2, 2010 at 1:04pm by megan

chem
I'm sorry Suey but your equations don't make sense. I can't balance equations that have the wrong formula.
Saturday, February 18, 2012 at 7:35pm by DrBob222

Pre-Cal
first off, equations have no inverses. They are just equations. if y = f(x) and x = f(y), then f^-1(y) = x = f(y) so f is its own inverse.
Thursday, November 22, 2012 at 11:52pm by Steve

Physics - What equations
What equations would you use for those problems?
Sunday, January 25, 2009 at 8:23pm by Sam

Algebra
But what are the equations for me to solve them? I need equations, that's what the directions are telling me.
Saturday, March 7, 2009 at 8:14pm by Joy

Math
These equations are not solvable. If you add the two equations, you get 0 = 49.
Tuesday, November 8, 2011 at 10:49pm by PsyDAG

Math - equations of lines
Writing the parametric equations of the given line one x=-21-12t and since we want the x intercept the y=z=0 therefore 8+4t=0 and 14+7t=0 in both case the t value is '-2' repeating the similar procedure to find the y-intercept the value of s=-3 there after how do i find my ...
Sunday, September 5, 2010 at 11:26pm by Shaila

math,correction
I have to determine which two equations represent parallel lines. equations are (a) y=(-4)x+2 (b) y=(4)x+2 (c) y= (1/2)x +2 (d) y=(-4)x+3 so the answer would be: A and D yes
Sunday, January 28, 2007 at 2:19am by Jasmine20

Math-Equations
using the two equations E=hv and c=lambdaV derive an equation expressing e in terms of h,c and lambda
Sunday, February 6, 2011 at 8:01pm by kirney

Vectors - Reiny
Thank you for the help! "When I solved equations 2 and 3 I got u=0 and t=-1, giving me r = (-2,-3,0) in both r = ... equations." Ok I'll check that. I just have a question...how would you get r = (-2,-3,0) when u = 0 and t = -1?
Monday, April 7, 2008 at 10:18pm by Alex

algebra
Try substituting (2, 2) into both equations to check if they hold. It is possible for a system of equations to have no solution.
Saturday, January 9, 2010 at 4:10pm by Marth

Trig
How do you convert rectangular equations into polar equations? If x4−y4=xy , then r2=atan(b); What is a? What is b?
Monday, December 13, 2010 at 11:47pm by Audrey

grade 9 math slope equations
Type the ordered pair that is the solution to these equations.3x - 2y = 8 2x + 5y = -1.
Sunday, March 15, 2009 at 11:00pm by Anonymous

Physics
your two equations do not reflect any positional information, as x= or y= I have no idea what your equations mean. Vectors require directions.
Tuesday, March 27, 2012 at 7:48pm by bobpursley

math/equations
ya thats what i meant opposite equations
Monday, March 30, 2009 at 6:32pm by sara

Equations
I do not get equations in any way can you help me learn it fast and not so complicated.
Monday, July 27, 2009 at 6:08pm by mehdi

math
substitute the x and y values of your given point into each of the two equations. If the statement is true, that is, if it satisfies the equation, then it is a solution for the equations.
Wednesday, April 1, 2009 at 8:17pm by Reiny

Math
The type of promblem you are dealing with is a set (in this case 2) simultaneous equations. You use the two equations TOGETHER to solve for x and y. Now do you get it?
Tuesday, April 14, 2009 at 5:23pm by Riley

algebra
Let's rewrite that as y - x = -4 y + x = 14 Add those two equations to get 2y = 10 That tells you that y=5 Use either of the orginal equations to get x.
Sunday, November 1, 2009 at 7:58am by drwls

Math
You are given two equations which are both true, and you are asked to solve for both x and y. You plan to solve this set of equations by substituting part of one equation into the other so you end up with an equation that contains only x's or only y's. The first thing you need...
Tuesday, October 7, 2008 at 8:05pm by Jen

Algebra 1
many ways to solve this: substitution, graphing, system of equations, etc. I prefer system of equations, so here you go! 2(3x + 4y = -2) 6x + 8y = -4 3(2x - 3y = 10) -(6x - 9y = 30)subtract 17y = -34 y = -2 plug in -2 for y into one of the equations and solve... 3x + 4(-2) = -...
Wednesday, May 2, 2012 at 10:18pm by Anonymous

math
1. Select any two integers between -12 and +12 which will become solutions to a system of two equations. 2. Write two equations that have your two integers as solutions. Show how you built the equations using your integers. Your solution and equations should not be the same ...
Thursday, March 31, 2011 at 7:52pm by John

algebra
Substitute -3 for x and 4 for y in both equations. That will give you two equations in m and b only. The answers will apear directly -15 + 28 = b -3m + 4 = 22
Wednesday, December 26, 2007 at 10:33pm by drwls

Math 116 algebra please check
I didn't solve the equations but I substituted your answers into both equations and each value satisfied each equation.
Wednesday, July 16, 2008 at 8:12pm by DrBob222

pre-algebra
What are the equations? Put them all in the form y = mx + b 'm' will be the slope and 'b' will be the y-intercept I assume you know how to graph equations. If not, you'd better review the subject.
Thursday, February 26, 2009 at 5:43pm by drwls

maths..plse helppppppp
Please help me to find the separate equations of the line represented by following equations: a) x^2+2(cosec a)xy-y^2=0 b) x^2+2xy. tan a-y^2=0
Friday, December 7, 2012 at 3:03am by ragini

algebra 2
Solve system of equations.Describe each step if your solution. W+X+Y+Z=2 2W-X+2y-Z=1 -W+2x-y+2z=-2 3w+x+y-Z=5 Please help I only know how to do this with 3 equations.
Wednesday, October 16, 2013 at 4:15pm by erick

MATH
system of linear equation The sum of 3 numbers is 14 the largest is 4 times the smallest the sum of the smallest and twice the largest is 18 what are the 3 numbers? show work? A. how many unknowns you have? -how many equations need to be solve for that many unknown? B. what ...
Tuesday, November 1, 2011 at 6:31pm by YANETH

Maths
You can write two independent equations for x. Both must be satisfied for there to be a common solution. For example, from the first two of your equations: 2x^2 + 5x = x^2 + 4x +12 which can be rewritten x^2 +x -12 = (x+4)(x-3) = 0 That has solutions of x=-4 and x=3. You can ...
Tuesday, October 12, 2010 at 11:46am by drwls

College algebra
system of linear equation The sum of 3 numbers is 14 the largest is 4 times the smallest the sum of the smallest and twice the largest is 18 what are the 3 numbers? show work? A. how many unknowns you have? -how many equations need to be solve for that many unknown? B. what ...
Tuesday, November 1, 2011 at 6:34pm by YANETH

algebra - Help!
Price list: Albacore $12 Barracuda $9 Carp $15 Dogfish $17 Eel $20 Flounder $11 Gar $14 Proof: Call the fish A-G and make all the prices into simple addition equations. Add all the numbers and equations together. You get: 2(A+B+C+D+E+F+G) = 196. And thus, (A+B+C+D+E+F+G) = 98 ...
Saturday, October 25, 2008 at 6:51pm by UNknown Guy

Chemistry
Write balanced equations for the formation of K4[Ni(NCS)6] starting from an anhydrous sample of nickel(II) nitrate. (3 equations necessary)
Wednesday, March 11, 2009 at 10:22am by Alice

algebra
_2__ = ____2___ x-9 x^2-6x-27 Solve the equations Check solutions to the equations (plug the answer back into the original equation.)
Saturday, February 19, 2011 at 4:56pm by Julie

Converting Cartesian Equations to Polar Equations
Thank you.
Tuesday, March 20, 2012 at 12:40pm by Adrianna

Predicting products for electrolysis
when you have your 4 different equations to form 4 different possible equations, what two equations do you use for water, O2(aq) + 4H+ + 4e- ----> 2H20 (+1.23) 02 (g) + 2H2O (l) + 4e- ----> 4OH- (+0.40) 2H20 (l) + 2e- ---> h2 (g) + 2OH- (aq) (-0.83) I'm not quite sure...
Tuesday, January 16, 2007 at 8:36pm by Sienna

Math
I am confused by your mention of "sets". I think A and B as the equations for straight lines. If 3x -4 = 2x +5, then x = 9 That somes from setting the two equations equal to each other and solving for x
Monday, December 28, 2009 at 8:42am by drwls

algebra
I have already solved two problems like this for you. Set up the algebraic equations that describe what you know, and solve them. There will always be as many independent equations as there are unknowns.
Friday, February 12, 2010 at 10:15am by drwls

Algrebra-Systems of Equations
The perimeter of a rectangle is 110cm. The length is 1cm more than twice the width. Write 2 equations that would be used to solve the system.
Thursday, January 19, 2012 at 12:35am by Resha

algebra ll
You should begin learning algebra by learning how to write the equations. Does your computer not have +, - and = signs? If so, use them. You have two variables so there should be two equations, yet I see the word "equals" four times. I have no idea what the equations are ...
Tuesday, August 12, 2008 at 3:01pm by drwls

algebra
You want to try eliminate one of the two variables (either x or y). When you do this, you're able to for one variable, plug that value in the equation and solve for the other variable. http://www.analyzemath.com/Tutorial-System-Equations/Tutorial-System-Equations.html
Saturday, September 18, 2010 at 10:35pm by TutorCat

algebra 1
I'm stuck on this problem. Can you help? -4x-9y=1 -x + 2y =-4 WHat is x and y? Two equations in two unknowns. Here is a quick way to solve them -4x - 9y = 1 4x - 8y = 16 (I got that my multiplying both side so the secind equation that you provided by -4) Now add the two ...
Tuesday, December 5, 2006 at 10:23pm by kyle

Vectors
When I solved equations 2 and 3 I got u=0 and t=-1, giving me r = (-2,-3,0) in both r = ... equations. check your arithmetic for the second, if they are perpendicular, then the dot product of their directions vectors should be zero (4,8,-4)∙(-1,2,3) = -4 + 16 - 12 = 0 so...
Monday, April 7, 2008 at 9:49pm by Reiny

Algebra
40 =15 x x - 20 This is a three part question>> first find the lcd method of solving this equations, and the second ones about cross-multiplying method to solve this equations ,The next question asked would the cross- multiplying method work for all rational equations?? ...
Sunday, December 4, 2011 at 8:49pm by JERSEYGIRL

algebra
"write a linear system of equations" This is a linear system of equations. You can use x and y instead of n and b. x = number of blooming annuals y = number of non-blooming annuals 3.20x = value of blooming 1.50y = value of non-blooming x + y = 24 3.20x + 1.50y = 49.60 Then ...
Monday, January 31, 2011 at 4:52pm by helper

Algebra
Post the work or thinking you have done. I gave you the two equations to be solved, I assume you understood how those equations were formulated. I would like to see what you can do with it. Do that, and someone will critique it.
Monday, September 24, 2007 at 10:44pm by bobpursley

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