please check my answers 1.Use Gaussian elimination to write the system of equations given below in rowechelon form. 2x+4y+z=4 2x4y+6z=13 4x2y+z=6 answer:2x+4y+z=4 8y5z=17 z=1 2.Find the solution to the system of equations given below. x+y+z=2 x+3y+2z=8 4x+y=4 answer: 0,4,2 3.Find
72,928 results
finite math
Solve the system of linear equations using the GaussJordan elimination method. 3x−2y+ 4z = 22 2x+y− 2z = 3 x+ 4y − 8z = −16

algebra
Plumber chargers $60 an hour. Plumber B chargers $40 to visit your home plus $55 for each hour. for hop many hours will the total cost for each plumber be the same? how much will that cost be? Define your variables: Write a system of equations: solve the

gaussian elimination
4. Solve the following linear system using Gaussian elimination. Show work. 3x + y – z = 5 4x + y = 6 6x – 2y + 3z = 2 how about looking at http://www.mathwords.com/g/gaussian_elimination.htm

math
solve the system of equations by elimination. 3x4y=22 2x+5y=7

algebra
Dorothy is thinking of two numbers. The sum of the numbers is 40 and the difference is 6. write a system of equations and use elimination method to find the two numbers.

precalculus
When using Gaussian elimination to solve a system of linear equations, explain how you can recognize that the system has no solution. Give an example that illustrates your answer.

algebra
Use Gaussian elimination to find the complete solution to the system of equations, or state that none exists. x+3y+6z=6 y4z=0

PRE  CALCULUS
Use Gaussian elimination to find the complete solution to the system of equations, or state that none exists. Show your work. 4xy+3z = 12 x+4y+6z =32 5x+3y+9z = 20 ...... I NEED HELP WITH THE OTHER TWO PLEASE :) 4 1 3  12 1 4 6  32 5 3 9  20 1 0 0 0

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) 2x3y=8 7x4y=11

Algebra
Find the number of the solutions to each system. a. 4xy+1=0 4xy+3=0 b. 2xy+4=0 4x2y+8=0 Write a question that can be solved using a system of linear equations. Solve the following system of equations by graphing: y=x+3 and y=2x3

math
Use elimination to solve each system of equations. x+y=3 2x3y=16

math
Solve the system of equations by elimination. (2 marks) y=2x^22x3 y=x^22x3

matg
Solve the system of equations by the elimination method 9/x++3/8y=9/4 and 1/9x+5/4y=1/9

math
Find the solution to the system of equations given below using elimination by addition. 5x + 20y = 40 x + 3y = 6

math
Solve the system of equations by elimination. Express the solution as an ordered pair. −5x−2y=−12 3x+2y=8

linear algebra
which of the following sets of vectors span R^3? a.){(1, 1, 2), (0, 1, 1)} b.) {1, 2, 1), (6, ,3, 0), (4, 1, 2), (2, 5, 4)} c.) {(2, 2, 3), (1, 2, 1), (0, 1, 0)} d.) {(1, 0, 0), (0, 1, 0), (0, 0, 1), (1, 1, 1)} can someone show the steps to check for

precalculus
Which of the following would be the best first step for solving the system of equations by elimination? • 6.3x + 7.2y = 5.4 • 5.6x + 6.4y = 4.8

Algebra
A: 6x − 3y = −4 B: −4x − y = 5 To solve this system of equations by elimination, what could you multiply each equation by to cancel out the xvariable?

pre  CALCULUS
Use Gaussian elimination to find the complete solution to the system of equations, or state that none exists. x + y + z = 9 2x  3y + 4z = 7 x  4y + 3z = 2 A. {(7z/5+34/5 ,2z/5 +11/5 , z)} b. {( 7z/5+34/5 , 2z/5 11/5 , z)} c . {( z/5+ 34/5 , 2z/5+11/5

Math
Use the method of elimination to solve the following system of equations. You must check your answer: 1)x/2 + y/5 = 1/2 2) 3x  y = 8

Math
Use the elimination method to solve the system of equations 5u+2v=15 3u+v=7

mathequation of circle
Write the standard form of the equation of the circle that passes through the points at (4,5) (2, 3), and (4,3). a. (x5)^2+(y+4)^2=49 b. (x3)^2+(y+2)^2=50 c. (x+4)^2+(y2)^2=36 d. (x2)^2+(y+2)^2=25 I'm having trouble with solving for the

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

M240 Help please
Solve the following system of equations using matrices. Use Gaussian elimination with back substitution or GaussJordan elimination. a. 3x1 + 5x2  8x3 + 5x4 = 8 b. x1 + 2x2  3x3 + x4 = 7 c. 2x1 + 3x2  7x3 + 3x4 = 11 d. 4x1 + 8x2  10x3+ 7x4 = 10 my

algebra
i need help with these problems (either a solution or how to plug them into a graphing calculator): 1) Solve by substitution or elimination 4/x + 1/y + 2/z = 4 2/x + 3/y  1/z = 1 1/x + 1/y + 1/z = 4 2)Solve the system of equations by substitution. x^2 +

Physics
Which of the following statements is/are true about Gaussian surfaces? i. Gaussian surface is the name for a closed surfaces used when calculating flux in Gauss’ Law ii. A Gaussian surface can have any shape (as long as it is closed) iii. Like defining

Algebra
To solve the following system of equations by elimination, which step would best to perform first? 1/2a  1/4b = 1 1/3a + b= 3 A. Add the two equations. B. Subtract the two equations. C. Multiply the first equation by 4. D. Divide the first equation by 3.

ALGEBRA
USE ELIMINATION TO SOLVE THE SYSTEM OF EQUATIONS {3X2Y+X=9 XY+4Z=10 2X+3YZ=53 A)(6,13.2,0.7) B)(14.1,8.6,3.2) C)(5,0,4) D)(10,12,3)

Algebra
Find all solutions to the following system of equations: x + 3y + 2z = 6 3x + y + 5z = 29 2x  3y + z = 14 This just did not work out for me. Here is my work: I first solved Equation #1 for x. x = 3y  2z + 6 Then, I did substitution, and replaced x for

Intermediate Alegebra
Solve the system of equations by the addition / elimination method. y = 5x + 5 5y = 25x

10th grade math
solve the following system of linear equations by elimination. verify your solution. 1. 4x9y=9 2. x3y=6

math
Solve the system of equations by Elimination OR Substitution. Explain why you chose one method over the other. 3x – 2y = 8 2x + 5y = 1

pre calculus
Use Gaussian elimination to write the system of equations given below in rowechelon form 2x+4y+z=4 2x4y+6z=13 4x2y+z=6

precalculus
please check my answers 1.Use Gaussian elimination to write the system of equations given below in rowechelon form. 2x+4y+z=4 2x4y+6z=13 4x2y+z=6 answer:2x+4y+z=4 8y5z=17 z=1 2.Find the solution to the system of equations given below. x+y+z=2

precalculus
When using Gaussian elimination to solve a system of linear equations, explain how you can recognize that the system has no solution.

PreCalculus Matrix
Use Gaussian elimination to find the complete solution to the system of equations, or state that none exists. Show your work. 4x  y + 3z = 12 x + 4y + 6z = 32 5x + 3y + 9z = 20 4 1 3 12 1 4 6 32 5 3 9 20 I believe that the solution does not exist and

algebra
Express the system as an augmented matrix and solve using Gaussian elimination. x=+2y+z=3 2y+3z =2 x+2z = 1

Linear Algebra
Use Gauss Jordan Elimination to write the solution of the system of equations: x1+4x2+2x3=17 3x1+x25x3=7 2x13x27x3=10

math
Look at the system of equations below. 4x minus 5y equals 3 line break 3x plus 5y equals 13 A student makes this argument: Elimination is the best method for solving this system because the ycoefficient in the first equation is the opposite of the

precalculus
Use the elimination method to find all solutions of the system of equations. (Order your answers from smallest to largest x, then from smallest to largest y.) x − y2 + = 0 2x2+ y2 −9 = 0

Mathematics
Solve by Gaussian elimination method 4x+2y5z=13 x+y+z=2 2xy3z=3

Algebra
Use the elimination method to solve the following system of equations. x + 3y – z = 2 x – 2y + 3z = 7 x + 2y – 5z = –21

Math Check
Hi! Can someone check these two answers? Thanks! Directions: Find the correct number of solutions for the following system of equations. 1.) 5x  3y + 2z = 3 2x + 4yz = 7 x  11y + 4z = 3 2.) 2x + y 3z = 4 4x + 2z = 10 2x + 3y  13z = 8 A.) One

Math
Solve the following system of equations using both substitutio and elimination y=x+4 y=2x4 Do I do what I do with the previous problems

Algebra....HELP!!
Use the elimination method to solve the system of equations a + 6b =4 a + 3b = 2 What is the solution in an ordered pair?

math
1. Solve for the indicated letter D=4e, for e The solution is e= 2. G(x) = 6/(65x) Choose the correct domain below {xx is a real number and x ≠0} {xx is a real number and x≠6/5} {xx is a real number and x≥6/5} {xx is a real number and x ≠6} 3.

pre calculus
Use Gaussian elimination to write the system of equations given below in rowechelon form. 2x+4y+z=4 2x4y+6z=13 4x2y+z=6

precalculus
Can you check my answer? If it is wrong can you please explain why and give the correct answer? Use Gaussian elimination to write the system of equations given below in rowechelon form. 2x+4y+z=4 2x4y+6z=13 4x2y+z=6 answer:2x+4y+z=4 8y5z=17 z=1

Math
Please help! x2y+z=7 2x+yz=0 3x+2y2z=2 a. Solve the above system of equations using Gaussian Elimination or GaussJordan Elimination. You must show row operations. b. Solve the above system of equations using Cramer's Rule.

College Algebra
Please help! x2y+z=7 2x+yz=0 3x+2y2z=2 a. Solve the above system of equations using Gaussian Elimination or GaussJordan Elimination. You must show row operations. b. Solve the above system of equations using Cramer's Rule.

Discrete Math
I am really stuck on these problems. I've worked a lot of them but I can't get these. Sometimes I think I know the answer but I can't show how I got it. 1.) Solve each matrix equation for X. 2X + 5A = B 2.) Find the following matrices: a. AB b. BA A= 2 4 3

precalc
Solve the system of equations using matrices. Use Gaussian elimination with back substitution. x+y+z = 5 xy+3z = 1 4x+y+z = 2

precalc
Solve the system of equations using matrices. Use Gaussian elimination with back substitution. x+y+z = 5 xy+3z = 1 4x+y+z = 2

HELP PLEASE
Solve the system of equations using matrices. Use Gaussian elimination with back substitution. x+y+z = 5 xy+3z = 1 4x+y+z = 2

pre  CALCULUS
Solve the system of equations using matrices. Use Gaussian elimination with back substitution. x+y+z = 5 xy+3z = 1 4x+y+z = 2

precalc  JAI
Solve the system of equations using matrices. Use Gaussian elimination with back substitution. x+y+z = 5 xy+3z = 1 4x+y+z = 2

Pre calculus
olve the system of equations using matrices. Use Gaussian elimination with backsubstitution. x + y + z = 5 x  y + 3z = 1 4x + y + z = 2 I need it explained to me, how do I do this?

pre  CALCULUS
Use Gaussian elimination to find the complete solution to the system of equations, or state that none exists. Show your work. 4xy+3z = 12 x+4y+6z =32 5x+3y+9z = 20

precalc
Use Gaussian elimination to find the complete solution to the system of equations, or state that none exists. Show your work. 4xy+3z = 12 x+4y+6z =32 5x+3y+9z = 20

precalc
Use Gaussian elimination to find the complete solution to the system of equations, or state that none exists. Show your work. x+4y+6z =32 5x+3y+9z = 20

pre  CALCULUS
Use Gaussian elimination to find the complete solution to the system of equations, or state that none exists. Show your work. 4xy+3z = 12 x+4y+6z =32 5x+3y+9z = 20

pre  CALCULUS
Use Gaussian elimination to find the complete solution to the system of equations, or state that none exists. Show your work. 4xy+3z = 12 x+4y+6z =32 5x+3y+9z = 20

PreCalculus
Use Gaussian elimination to find the complete solution to the system of equations, or state that none exists. Show your work. 4x  y + 3z = 12 x + 4y + 6z = 32 5x + 3y + 9z = 20 Please help me..

Math
I need to use the Gaussian Elimination to solve a system of equations, but I have no idea on how to do that. I remember doing these in high school, but since its been a while I can't remember exactly how to do it. Here's the system of equations I need to

PreCalculus
Solve the system of equations using matrices. Use Gaussian elimination with backsubstitution. x + y + z = 5 x  y + 3z = 1 4x + y + z = 2 I really need help.. 1 1 1 5 1 1 3 1 4 1 1 1 2 I've done so many different methods to solve this and I get

Math Check
Hi! Can someone check my answers? Thanks! Directions: Solve each system by using the elimination method. Make sure to write your answer in (x,y) form. 1.) 3x5y=2 2x+5y=13 2.) 3x+11y=4 2x5y=9 My answers: 1.) (3,7/5) 2.) (17,5)

algebra
Please help with: Express the system as an augmented matrix and solve using Gaussian elimination. x=+2y+z=3 2y+3z =2 x+2z = 1

Math
Use elimination to solve each system of equations. x+y2z=10 8x9yz=5 3x+4y+2z=10 I need to figure out what x,y, and z each equal. I must use the elimination method.

algebra 1
Use elimination to solve the the system of equations given by 10x4y=20 and 10x5y=35. I can't figure this one out. Whenever I check my work, it is incorrect.

Math
I cannot come up with the right answers for my matrix. I need to write as a system of equation and solve the system. 1 2 3 x 1 1 1 1 y = 12 1 1 2 z 2 The answers I come up with are 31 15 15 when I check these, they will not work, what I am doing wrong?

Math
1) x+2y=7, 2xy=4 What I did: multiply 2xy=4 by 2 so I could eliminate the y variable. 4x2y = 8 + x +2y =7 = 3x =1 Divided 1 by =1 and got x=1/3 I only need someone to check my answer. Also one last question, can I use the elimination method for

Algebra 2
Can someone check my answers. Write the following equations in standard form. 1) x^2  2x + y^2 + 4y = 11 answer: (x1)^2 + (y+2)^2 = 16 2) 4x^2 + 24x  y + 34 = 0 answer: y = 4(x3)^2 + 2 3) The graph of which equation is a circle? A. 5x^2 + 10x = 9 +

Algebra
Solving system of linear equations by using the apropiate method name the method and the x,y coordinates 1)X=4y+8 2x8y=3 2)3x7y=6 elimination method 2x+7y=4 (2,0) 3)5x2y=12 elimination method 3x2y=2 (7,23/2) 4)9x8y=42 elimination method 4x+8y=16

math pre calc
gaussian elimination x+Y+Z=2 Xy+5z+22 5x+y+z=22

algebr7a
can anyone tell me how to use Gaussian Elimination? 3x+2y+4z=19 x+5y+2z=1

quantitative techniques
solve this using gaussian elimination x+5y=7 x7y=5

algebra
2x+8y8z22 x+2y2z=3 5x+7y+z=13 solve by gaussian elimination

Math (PLEASE HELP!)
1. Solve the system of equations by elimination.y=2x^22x3 and y=x^22x3 2.The system of equations y=5(x+4)^24 and y=8x^2+64x+124 has _____ solution(s). 3. Determine the value of k in y=kx^25x+2 that will result in the intersection of the line

Matrices
Gaussian row elimination method: (i) x+3y+z=4 x2y2z=3 2x+yz=9 (ii) x+2z+y=0 2x+y+z=6 3x+3y+2z=14

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) 2x3y=8 7x4y=11

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) 2x3y=8 7x4y=11

Calculus
Please check my answers. Solve the following equations and/or system of equations for the unknown variables. 1. x^23x12=0 x= 3 + sqrt(57) / 2, x= 3  sqrt(57) / 2 2. x+y=8 , 3x+2y=2 x=14, y=22 3. 3x + 2y =10 , x+y=5 , y+z =9 x=0,y=5, z=4 4. 1/xp1z=0,

algebra
SOVING SYSTEM OR EQUATIONS BY ELIMINATION

Math
Use elimination to solve the system of equations. x + 2y = 18 x + 8y = 38

Algerbra1
Use elimination to solve each system of equations: st=4 over s+t=2; 4x+2y=8 over 4x3y=10

maths
Mere, Sam and Nathan go to a bookshop to buy supplies for their school. Mere bought two erasers and four pencils and paid $2.40 for it. Sam bought six erasers, one pencil and two pens and paid $3.95 while Nathan paid $4.15 for an eraser, a pencil and four

MATH HELP
I posted this yesterday and no one bothered to check it, therefore Im posting it again, please check it this time. The south edmonton pet shop has several parrots and dogs for sale. There are a total of 24 heads and 82 legs in the display cages. A) Write a

Algebra
Checking a few answers to some algebra problems: 1.Find the slope of the line that passes through the points (4,1) and (3,5). I got m = 51 / 3(4) Answer is m = 4/7 2.Find the equation, in slopeintercept form, of the line that passes through the points

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?

Algebra
I have two equations that I need to solve using the elimination method the system is x = y = 9 and 2x  y = 3

algebra
How to solve the system of equations below using elimination? b = 2a+1 10a+b=5b+2

math
Solve the system of equations by elimination. (2 marks) y=2x^22x3 y=x^22x3

Algebra
How do you solve a system of equations by substitution and/or elimination?

English
You are going to take a quiz. I'll distribute exam papers. You should write down the answers. Fill in the blanks with suitable expressions. Take one and pass the others to the other students. First write down your number and name on the top of the paper.

Math
Solve the system of linear equations by elimination. Thank You for your help. 8x+10y=3 3x5y=2

math
Solve following system of equations? x+3z=2 2x+2y+z=4 3x+y2z=5 i need help with few so i can get hang of this math plz. Perform row operations write new matrix [132 312 211 073] R1+R2 using x,yand z variables write system linear equations represented

10th grade mathematics
solve the following system or linear equations by elimination. verify your solution 1. 4  9y = 9. 2.x  3y = 6

Math Check
Hi! Can someone check this for me? My teacher wants me to write the system of equations that will correspond to the final matrix. I have the matrix already, but I need help with the writing the system stuff. Thanks! Matrix: [10 2  48] [5 6/4 9] My

Math
Ues the Gaussian elimination to find complete solution to the equation or show that none exist 5x+12y+z=10 2x+5y+2z=1 x+2y+3z=5

quick question regarding equations
I know there are methods out there but what do you think is the best or easiest method(s) of solving a system of equations. Depends on the coefficients of the equation. If in one of the equations I can solve for one of the variables without having to