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mathematics: algebra;equations
wuts the answer for -12 + 5u= -48
Friday, May 23, 2008 at 10:43pm by alisa

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

math
Study these sites. http://www.mathsisfun.com/definitions/two-step-equation.html https://www.khanacademy.org/math/algebra/solving-linear-equations-and-inequalities/equations_beginner/v/two-step-equations http://www.basic-mathematics.com/solving-two-step-equations.html
Wednesday, September 18, 2013 at 7:49pm by Ms. Sue

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

Mathematics
Among 500 freshmen pursuing a business degree at a university, 313 are enrolled in an economics course, 205 are enrolled in a mathematics course, and 153 are enrolled in both an economics and a mathematics course. What is the probability that a freshman selected at random from...
Sunday, February 20, 2011 at 11:12pm by Anonymous

Mathematics
x-z=7 x+y=3 z-y=6 For the above system of three equations x= ?
Tuesday, July 17, 2012 at 7:19pm by Willie

Maths
what are the meanings of Mathematics of Buying and Mathematics of Selling, using language from the Business Mathematics aspect.
Monday, December 26, 2011 at 2:25pm by ummu

mathematics
how to solve exponatins equations by trial and error
Sunday, March 3, 2013 at 5:53am by nolusindiso

mathematics
just add the equations. 7+12 = 19
Saturday, September 28, 2013 at 4:07pm by Steve

mathematics
Determine the nature of the solutions of the equations. 2tē-6t=0
Friday, September 4, 2009 at 7:14am by Anonymous

probability
out of 250 students interviewed at a community college, 90 were taking mathematics but not computer science, 160 were taking mathematics, and 50 were taking neither mathematics nor computer science. Find the probability that a student chosen at random was a. taking just ...
Thursday, October 27, 2011 at 2:14pm by Emma

English Grammar
The only time you capitalize the M on "math" is when the word is part of the actual title of a course. Here are some examples: He is studying algebra. She is enrolled in Algebra I. They are working on their math homework. They are taking the Discrete Mathematics class. So ... ...
Friday, March 21, 2008 at 1:05am by Writeacher

Mathematics
Determined wheter the following equations have a solution or not5X^2+8X+7=0
Friday, October 12, 2007 at 6:49am by Anonymous

math pre calc
plug your equations in at http://www.gregthatcher.com/Mathematics/GaussJordan.aspx to see all the steps of the solution.
Thursday, April 25, 2013 at 8:22am by Steve

Mathematics
I used "completing the square" which you will find in your text under solving quadratic equations.
Friday, April 20, 2012 at 3:08pm by Damon

mathematics
Determine the equations of a straight line passing through (-6;-2) and pependicular to 3x+2y=6
Monday, August 5, 2013 at 1:27pm by Perfect

mathematics
Determine the equations of a straight line passing through (-6;-2) and pependicular to 3x+2y=6
Monday, August 5, 2013 at 2:03pm by Perfect

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

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 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

Additional Mathematics
Showing your working clearly, solve the following simultaneous equations: y+5x=3 2x^2-1=3xy+y^2
Tuesday, December 18, 2012 at 4:42am by Victoria

mathematics for management
I saw this one pass by me before. Are you distinguishing between "x" and "X"? If so, you have 4 variables with only 2 equations.
Tuesday, April 15, 2014 at 12:04pm by Reiny

Math essay
Even though, Mathematics may not seem like it has a lot of history, it really does. The history of Mathematics has progressed so much, that even today there are more developments and discoveries still going on. Without the many things that have been found throughout history, ...
Tuesday, November 27, 2007 at 6:28pm by Soly

Mathematics
x+y=60 15x+10y=700 Yes, your equations are correct. multipy the first equation by 20, then subtract it from the second.
Tuesday, September 24, 2013 at 2:07pm 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

Mathematics
3x - 21 = 2y 3y = 84 - 6x Using the two equations above, solve for y. A.11 B.35 C.-6 D.6
Tuesday, March 13, 2012 at 11:40am by Elysa

mathematics
use inverse method to solve the system of linear equations x+y+z-4 =0 2x-3y+4y-33=0 3x -2y -2z -2= 0
Thursday, July 28, 2011 at 9:03am by victor1

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

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

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

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

ALGEBRA
SORRY ABOUT THAT.Decide which of the variables described is likely to have a normal or near-normal distribution. 4) a. The number of courses remaining until graduation for the students in a small liberal arts college b. The SAT mathematics scores for students in an advanced ...
Sunday, March 28, 2010 at 11:03pm by WATER

mathematics
is this exponential equations? AS in e^x=14 (solve for x) put in a value for x, see what e^x is. If it it is greater than 14, reduce x.
Sunday, March 3, 2013 at 5:53am by bobpursley

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

physics
You just have to use both momentum and energy equations, and do the messy algebra. Two equations, two unknowns (the two ball velocities after collision). Enjoy the messy algebra.
Thursday, October 28, 2010 at 10:35pm by bobpursley

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
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

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

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

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

Maths
Among the examinees in an examination 30%, 35% and 45% failed in Statistics, in Mathematics, and in at least one of the subjects respectively. An examinee is selected at random. Find the probabilities that a. He failed in Mathematics only b. He passed in Statistics, if it is ...
Saturday, October 9, 2010 at 2:09am by Neeraj Bhanot

IGNOU probability
Among the examinees in an examination 30%, 35% and 45% failed in Statistics, in Mathematics, and in at least one of the subjects respectively. An examinee is selected at random. Find the probabilities that a. He failed in Mathematics only b. He passed in Statistics, if it is ...
Friday, October 15, 2010 at 6:10am by Dharmenra

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

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

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

math algebra 1
Who is the inventor of the FOIL method? some one answer me!! The history of mathematics in India is ancient. The Hindu Vedic tradition is an oral tradition of knowledge passed down in short verses, dating to before the invention of paper. The Vedas encompass a broad spectrum ...
Monday, May 21, 2007 at 12:02pm by amy

Math essay
Still today, Mathematics history is still in the making. In about mid-March of 2007, there was a team of researchers throughout North American and Europe who used network of computers to map E8. Even though its not know exactly how the understanding of E8 can be useful, the ...
Tuesday, November 27, 2007 at 6:28pm by Soly

FOR MATHMATE
Media services charges $40 for a phone and 20/mth for its economy plan. It says to find a model that determines the total cost, C(t), of operationg a media Services phone for t months. I think the answer should be in this equation - y = mx+b. Not sure. Algebra/Equations,...
Friday, November 26, 2010 at 7:57pm by AMY

algebra
This is a system of equations divide by 3 on the first to get y=10/3-5/3 then put that in for y on the other equation to get x, and you have solved the system of equations x=(whatever) and y=(whatever).
Sunday, October 26, 2008 at 6:00pm by Damian

Algebra
Please help me to solve these two equations step by step. They are quadratic equations 1).2x^2+9x+4=0 2).5x^2=-7x
Wednesday, January 18, 2012 at 11:30pm by Daleda

algebra
Can someone please help. When you solve a system of equations by the substitution method, how do you determine whether the system of equations is inconsistent? Thanks
Thursday, March 1, 2012 at 9:19pm by algebra need help

Algebra 2 (Diophantine Equations)
Find all positive integer solutions for 13x + 9y = 190 using Diophantine equations.
Wednesday, October 5, 2011 at 2:59am by Peter

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

math
500 students sat for an examination in mathematics,physics and chemistry.45 passed all the three subject,60 passed mathematics and chemistry,70 passed physics and chemistry,50 passed mathematics and chemistry,10 passed in mathematics,80 passed in chemistry and 35 passed at ...
Sunday, November 13, 2011 at 3:23pm by damilola

algebra
Can someone help me figure this out please? when you solve a system of equations by the substitution method, how do you determine whether the system of equations is inconsistent? thank you anyone
Sunday, March 18, 2012 at 11:25pm by don

Physics
Calculus is a branch of mathematics that lets you solve equatiuns that involve the rate of change of functions, or the areas under curves. In the course of solving these equations, often many new functions are introduced.
Sunday, October 24, 2010 at 10:49pm by drwls

Mathematics
Solve the following system of linear equations using the matrix inverse method. \begin{array}{ccc} 3x+2y&=&7 \\ 4x+3y&=&10\end{array}
Monday, September 9, 2013 at 8:39pm by Teroataa

algebra
when you solve a system of equations by the substitution method, how do you determine whether the system of equations is dependent?
Thursday, October 28, 2010 at 7:40pm by Stephanie

algebra
When you solve a system of equations by the substitution method, how do you determine whether the system of equations is inconsistent?
Wednesday, March 21, 2012 at 12:27pm by algebra

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

Algebra
Some function are linear equations, others could be quadratics equation, cubic equations etc. Basically, a function shows the relationship between two quantities
Tuesday, June 10, 2008 at 6:50pm by Mrs Webb

College Algebra
solve systems of equations by graphing... I get how to graph and solve equations but i just dont understand why its coming out wrong u=v 4u=3v-3
Tuesday, September 23, 2008 at 8:29pm by RomanRamirez

Algebra
I don't see any set of equations. All I see is poorly written inequality. What is supposed to follow the first ^ ? Please write equations on one line
Tuesday, April 26, 2011 at 9:36pm by drwls

algebra 2
for the equations y=x and y=|x|....i need help on give one similarity and one difference for the equations and graphs
Friday, January 18, 2008 at 7:34am by logan

Algebra 2 (Diophantine Equations)
Solve 5x + 12y = 47 using Diophantine equations.
Friday, October 7, 2011 at 1:05am by Peter

Mathematical methods
Complete the exercises in the "Projects' section on page 397 of Mathematics in Our Word.For Project #1, work only equations (a) and (c), but complete all six steps (a-f)as shown in the example
Tuesday, December 13, 2011 at 12:22am by geneviveStacy

Algebra
Solving Linear Equations - Elimination Write whether each of these systems of equations has a common solution or not. Explain y = -x + 2 Y = 2x + 1 If you show me one and explain it, then I can probably do the rest...Thanks
Thursday, December 18, 2008 at 9:35pm by Jessie

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

mathematics
how can you do the lcm to somethimg like 12000 without having to do all of that mathematics just to make it quicker?
Monday, September 10, 2007 at 4:52pm by alana

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

University studies
According to the Center for Mathematics Excellence, which of the following is a math myth? A. Knowing the rules and how to use them is the most important part of math. B. Even people who are highly skilled in mathematics and science find these subjects to be challenging C. ...
Thursday, November 3, 2011 at 7:40pm by lil Bee

mathematics
how do I cope with intermediate mathematics e.g log rhythms?
Tuesday, October 16, 2012 at 5:37pm by Aron

Mathematics
write the following simultaneous equations in the form of AX= B where A,X and B are matrices 11x+6y=6 9x+5y=7 hence write the solution for x and y as a product of two matrices.
Tuesday, July 10, 2012 at 9:51am by INDIANA

Mathematics
write the following simultaneous equations in the form of AX= B where A,X and B are matrices 11x+6y=6 9x+5y=7 hence write the solution for x and y as a product of two matrices.
Wednesday, July 11, 2012 at 9:44am by INDIANA

Mathematics
write the following simultaneous equations in the form of AX= B where A,X and B are matrices 11x+6y=6 9x+5y=7 hence write the solution for x and y as a product of two matrices.
Thursday, July 12, 2012 at 10:07am by INDIANA

Mathematics
write the following simultaneous equations in the form of AX= B where A,X and B are matrices 11x+6y=6 9x+5y=7 hence write the solution for x and y as a product of two matrices.
Monday, July 16, 2012 at 12:53pm by SAMARA

Mathematics
write the following simultaneous equations in the form of AX= B where A,X and B are matrices 11x+6y=6 9x+5y=7 hence write the solution for x and y as a product of two matrices.
Friday, July 20, 2012 at 9:54am by Samara

Math
In a class of 550 students, students may take all, none, or a combination of courses as follows.? Draw a Venn diagram to find how many students are not in any of these courses. Mathematics-280 Science-200 Technology-230 Mathematics and Technology-110 Science and Technology-100...
Tuesday, June 9, 2009 at 4:42pm by Angie

college Algebra
visit http://www.gregthatcher.com/Mathematics/GaussJordan.aspx and enter your matrix. It will show you all the steps involved.
Sunday, December 15, 2013 at 4:15pm by Steve

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

algebra
hop on over to http://www.gregthatcher.com/Mathematics/GaussJordan.aspx and you can see all the steps involved in the solution
Thursday, January 31, 2013 at 10:52am by Steve

math (Matrix algebra)
Enter your data at http://www.gregthatcher.com/Mathematics/GaussJordan.aspx to see all the details
Wednesday, April 16, 2014 at 4:10am by Steve

Discrete Mathematics
The augmented matrix A represents a system of three real-valued equations in three unknowns. Which of the answer choices would result from the usual first step of applying Gauss-Jordan elimination?
Tuesday, July 30, 2013 at 4:57am by Joy

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 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

algebra 1
2R + 3T=31 3R+2T=29 =================== Two equations and two unknowns. Solve the two equations simultaneously. Post your work if you get stuck.
Tuesday, January 27, 2009 at 10:03pm by DrBob222

Algebra
You posted this already and were given a method to do it by fitting a parabola of form ax^2 + bx + c. I left you with a proof that c = 1, and two additional equations to solve -2 = 4a - 2b +1, and 2 = a + b + 1 (I had one of the equations wrong) If you finish the problem, you ...
Saturday, November 3, 2007 at 10:52am by drwls

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
Solve the system of equations: First:x+3y=5 Second:3x-y=5 multiply the second equation by 3 then add both equations(I know I have it wrong somewhere I just guessed at the solution and it worked. I got (2,1)
Tuesday, February 26, 2008 at 2:10am by Jon

algebra 1
Got a test tomorrow... Say you have a system of equations (linear), that you can solve using substitution, graphing, or elimination. Without solving the equations, can you tell if there is one solution, many solutions, or no solution?
Wednesday, February 27, 2008 at 4:54pm by Lily

Math Essay
I have to write this paper over the history of math, can you please give me some other websites that I can use? So far I have one website from wikipedia. Also, can you please read my introduction? As of today, there are plenty of new developments in the area of Mathematics. ...
Friday, November 9, 2007 at 11:15pm by Soly

Algebra
visit http://www.gregthatcher.com/Mathematics/GaussJordan.aspx to see the intermediate steps
Thursday, January 17, 2013 at 3:11pm by Steve

mathematics: algebra;equations
-12 + 5u= -48 add 12 to both sides 5u = -48+12 5u = -36 divide both sides by 5 u = -36/5
Friday, May 23, 2008 at 10:43pm by Reiny

Algebra 2
put them in standard form (x,y,z) 2x+3y-z=6 x-2y+z=-1 3x+y-3z=-1 You can solve these a number of ways, I will show you one. add 1st and second equations 3x+y=5 now multiply equation 2 by three, then add equations 2 and 3. 6x-5y=-4 check that. now on these two remaining ...
Saturday, November 13, 2010 at 7:16pm by bobpursley

mathematics
why would someone study mathematics
Thursday, April 30, 2009 at 8:55am by stac

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