# Solve using the elimination method. Show your work. If the system has no solution or an infinite number of solutions, state this. 2x + 10y = 58 -14x + 8y = 140

91,718 questions, page 7
1. ## math

Solve the system of equations by graphing. Then Classify the system? 4u+v=1 4u=v+7 What is the solution of the system? (Type an ordered pair. Type N if there is no solution. Type R if the solution is all real numbers.)

asked by micheal on June 16, 2009

This problem is related to Chapter-Sets. Please solve the question using x method. x method means x ∈ A ∩ B Q. If A-B=A then show that A∩B=Ø

asked by Akash on June 29, 2010
3. ## Algebra 1 HELP PLZ!!!

Use the Substitution method to solve the system of equations. x + y = -4 x - y = 2 PLz HELP!! I'M NOT BOB BUT I CAN HELP ITS REALLY SIMPLE ALGEBRA X + Y = -4......EQN 1 X - Y = 2.....EQN 2 From EQN 2, let x = 2 + y Substitute that into EQN 1 x - y = -4

asked by Margie on November 2, 2006
4. ## math plz help ;-;

Determine the x-coordinate of the solution of the system of equations below. You may use any method: 2x-y=10 x+y=2 Determine the y-coordinate of the solution for the system of equations. You may use any method. 2x-y=10 x+y=2 Plz help i really don't

asked by leo on June 1, 2016
5. ## calculus

Solve the equation in the real number system X^4+11x^3+24x^2-23x+35=0 Please show work

asked by Austin on December 27, 2012
6. ## 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

asked by Anneliese on February 25, 2009
7. ## Math

How would you solve this problem?: x2 + y2 = 25 x2 - y = 5 You have to solve for one variable either by substitution or elimination method and then use the answer to plug it in one of the equations to get the other variable. I've been at this problem for

asked by . on November 22, 2009
8. ## algebra

Solve x+2y=7 (1) X=4-2y (2) Elimination 4x+5y=4 8x+10y=8 what is solution

asked by Diane on January 7, 2011
9. ## Algebra

solve by elimination: 6a+2b = -48 -6a+b = 57 What is the solution set ( , )?

asked by Richard on October 11, 2012
10. ## 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

asked by Ciara on April 11, 2015
11. ## algebra

Use Gaussian elimination to find the complete solution to the system of equations, or state that none exists. x+3y+6z=6 y-4z=0

asked by steph on November 12, 2015
12. ## algebra

Systems of equations can be solved by graphing or by using substitution or elimination. What are the pros and cons of each method? Which method do you like best? Why? What circumstances would cause you to use a different method? Consider responding to your

asked by Anonymous on January 25, 2010
13. ## Algebra/Precalculus

Solve the system of linear equations and check any solutions algebraically. (If there is no solution, enter NO SOLUTION. If the system is dependent, express x, y, and z in terms of the parameter a.) 3x-3y+6z=6 x+2y-z=8 5x-8y+13z=4 I don't know what

asked by Dede on April 5, 2017
14. ## Algebra

Two more Algebra questions : Drawing a blank on this one, not sure where to start. Find the equation, in standard form, with all integer coefficients, of the line perpendicular to x + 3y = 12 and passing through (9, -5). I have half a solution to this one:

asked by John on October 15, 2007
15. ## algebra

Solve each system graphically. If a system has an infinite number of solutions, use set builder notation to write the solution set. If a system has no solution, state this. x + y = 6 x - y = 4 I'm lost, Please Help!! Thank you

asked by slomo on February 3, 2015
16. ## algebra

Solve the system graphically. If a system has an infinite number of solutions, use set-builder notation to write the solution set. If a system has no solution, state this. 2x – y = 4 5x – y = 13 I do not understand how to do this

asked by Patte on June 13, 2014
17. ## math

Use an elimination strategy to solve this linear system: 10x + 10y = 1030 5x + 5y = 135

asked by kelly on June 11, 2013
18. ## Calculus!

For the function y=(e^2x)+(3x)-(10), use Newton's method and the calculator method to find the x value for which y=15. Please show your work so that I can understand the question! Thank you so much!! it means alot!!

asked by Sam on March 17, 2011
19. ## Algebra

Help!! I am having difficulty with a problem for hours now and if I could get some help, my head might stop pounding.Solve each system graphically. if a system has an infinite number of solutions, use set builder notation to write the solution set. If a

asked by slomo on January 2, 2015
20. ## Algebra

Solve the system of equation by graphing. Then classify the system. 3x + y = 4, 4x + 5y = -24. Solution: Infinitity many solutions, no solution, System inconsistent/ consistent, Equation dependent/ independent.

asked by B.B. on April 11, 2010

solve each system graphically. if a system has an infinite number of solutions, use set-builder notation to write the solution set. If a system has no solution, state this. y = 2 - x 2x + 2y = 4

asked by slomo on January 11, 2015
22. ## Pre-Algrebra

Two cell phone companies have different rate plans. Runfast has monthly charges \$10 plus \$4 per gig of data. B A &D’s monthly charge is \$6 plus \$6 per gig of data. Your task, is to determine under what circumstances each company has the better pricing.

asked by Joey on June 1, 2018
23. ## math

Solve the system by graphing. Then classify the system.? 6x-y=50 6x+7y=-14 What is the solution of the system? (type an ordered pair. Type N if there is no solution. Type R if the solution is all real numbers)

asked by micheal on June 16, 2009
24. ## Algebra

Two more Algebra questions : Having some difficulty with these. Drawing a blank on this one, not sure where to start. Find the equation, in standard form, with all integer coefficients, of the line perpendicular to x + 3y = 12 and passing through (9, -5).

asked by John on October 15, 2007
25. ## Chemistry

Any help would be great on the below problems. I am not sure where to begin. How do I solve these? Do I use a formula? 1. You are asked to make 500.0 mL of a 4.5M solution of HCl, but the only HCl you have available to dilute is 18.0M. Describe how you

asked by Ashley on August 17, 2010

Solve the system of equations by graphing then classify the system as consistent and the equation as dependent or independent. 4x-y=26 4x+5y=-10 What is the solution of the system of Equations? (type am ordered pair Type N if there is no solution Type R if

asked by Kell on May 6, 2008
27. ## math

two systems of equations are giving below for each system choosethe best description of its solution if applicable give solution x+4y=8 -x-4y= -8 choose which one this problem fit in 1)the system has no solution 2) the system has a unique solution (x,y)=

asked by sw on March 7, 2013
28. ## Algebra II

If you were to use the substitution method to solve the following system, choose the new system of equations that would result if x was isolated in the third equation. 2x - 3y + z = -4 2x - 2y + z = -1 x - 2y + 3z = -6 5x + 7y = 6 y - 4 = -1 -y - 1 = -4

asked by Asianthatsuxatmath on January 17, 2014
29. ## Algebra

When solving a system of equations by the addition method, how do you know when the system has no solution?

asked by Amy L on March 15, 2011
30. ## Algebra

When solving a system of equations by the addition method, how do you know when the system has no solution?

asked by Logan on March 14, 2011
31. ## college Algebra

asked by Nicole on January 25, 2009
32. ## 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.

33. ## algebra

Solve the system of equations by first writing it in matrix form and then using Gauss-Jordan elimination. x-4y =-5 -2x + 9y = 125

asked by Vee on January 31, 2013
34. ## Math

Solve the following system using elimination (aka linear combination) attach an extra sheet, if needed. { 3x+2y+4z=11 { 2x-y+3z=4 { 5x-3y+5z=-1

asked by Kayla on September 11, 2017
35. ## Algebra

Solve. Find the exact solution(s). Simplify as much as possible. Show work. 2x^2 + 4x – 1 = 0

asked by Laurie on August 3, 2009
36. ## Algebra Help

Solve. Find the exact solution(s). Simplify as much as possible. Show work. 2x^2 + 4x – 1 = 0

asked by Laurie on August 3, 2009
37. ## math plz help ;-;

1. Solve the system by any method: 2x-5y=-1 2x-y=1 How many solutions does the system of equations below have? Explain your answer. y=3/5x-1 y=6/10x+3 plz help me ;-; i don't understand how to do this, sorry ;-;

asked by leo on May 30, 2016
38. ## Math

Solve by the elimination method. 5r-3s=2 3r 5s =42 r=-40 is this right. 4x+5y=7 5x-4y=5 Decide whteher the pair of line is parallel, perpindular, or n I said is was parallel. Tell me if this right.

asked by Mary jo on April 7, 2009
39. ## Algebra

How do I solve for elimination method on this problem: 0.3x - 0.2y=4 and 0.3x + 0.3y= 5/19. I know that multiply by 10 on both equations and get 3x-2y=40 and 3x+3y=50/19. and then I have to multiply 3x-3y=40 by 3 and 3x+3y= 50/19 by -3 to get 9x-9y=120 and

asked by A.W. on March 6, 2009
40. ## math

We consider the non-homogeneous problem {y''-16y} = {256x^{2}} First we consider the homogeneous problem {y''-16y} = 0 : 1) the auxiliary equation is a r^2+br+c = =0 . ________________ 2) The roots of the auxiliary equation are (enter answers as a comma

asked by Leah on April 2, 2016
41. ## Math

Please help!!!! Solve each system graphically. Be sure to check your solution. If a system has an infinite number of solutions, use set-builder notation to write the solution set. If a system has no solution, state this. 6x - 2y = 2, 9x - 3y = 1 My answer:

asked by Jordyn on October 11, 2010
42. ## algebra

How do I solve this with the elimination method? 5x-10y=4 5x-10y=5 I need x=, and y= to get an ordered pair, but every time I mult. by a neg, everything goes away instead of just one variable! please help!

asked by bob on March 21, 2010
43. ## Math

Solve by either graphing and then get an exact solution by using either substitution or elimination: x-3y=6 2x+y=2

asked by Daisy on February 14, 2010
44. ## Math/Algebra

Solve the following system of equations. x+7y=8 (1) x=2-7y (2) What is the solution of the system? Type the ordered pair state that there is no solution. I don't understand what they are asking me to do. Should I use #2 in equation #1 or something else?

asked by Maverick on May 9, 2010
45. ## Algebra

Solving for the sytems of equiation using the elimination method. Book gives answers 3,2. I have tried using all the numbers to solve for x and y. I do get the 3,2. Don't know if this is another error in the book. 8x-4y=16 4x+5y=22

asked by G on April 1, 2008
46. ## algebra

asked by sarah on January 18, 2012
47. ## Math - Problem4

Solve the inequality. Express your solution using interval notation and please show all of your work. x^4 - 7x^2 - 14 > 0

asked by Greg - PV on June 9, 2011
48. ## math

Solve -3(x-10)>-x+5. Write your solution using set builder notation. please show work

asked by Renee on March 29, 2012
49. ## algebra ll

Show the work to solve |2x+5| -1 < 6 and describe the graph of the solution in a complete sentence.

asked by justina on August 30, 2011
50. ## Algebra 2

solve each inequality or equation. Graph the solution. 5(absolute value 3w+2)-3>7 *Please show me the work

asked by Alicia on October 15, 2014
51. ## math

Please help i really need an A and i'm horrible at math ): 1. solve the following equation algebraically, show your work 6 = x+2 over 3 2.solve the following equation algebraically, show your work 13 + w over 7 = - 18 3. solve the following equation

asked by hush my child on September 20, 2018
52. ## college algebra

Solve the system of linear equations and check any solutions algebraically. (If there is no solution, enter NO SOLUTION. If the system is dependent, express x, y, and z in terms of the parameter a.) x +2z=5 3x-y-z=12 6x-y-5z=27

asked by Keith on April 24, 2017
53. ## math

solve the polynomial inequality and graph the solution set on a real number line. express the solution set in interval notation x^3+x^2+64x+64>0 show work please

asked by Paul on January 9, 2013
54. ## Using Matlab

imagine you have a simple calculator that can only do addition,subtraction,multiplication and division. show how you can still use it to calculate the cube root of a given number, ie a^1/3, as follows: a)show that newton raphsons method for solving the

asked by geoff on October 16, 2011
55. ## Math

PLEASE CHACK MY ANSWER!!! Discussion for Applications of Linear Systems When solving a system of equations, how do you determine which method to use? My answer: I determine which method to use by looking at the equations. If both equations are in

asked by Matthew on December 15, 2016
56. ## Algebra

Solve the system of linear equations and check any solutions algebraically. (If there is no solution, enter NO SOLUTION. If the system is dependent, express x, y, and z in terms of the parameter a.) 3x-3y+6z=15 x+2y-z=11 5x-8y+13z=19

asked by Keith on April 24, 2017
57. ## mat115

Please help me with this math question. I am asked to show my work but I don't know how to solve the problem to show my work. The question is: Choose the correct list of factors of the number 8. Again, I have to show my work with this question. Please help

I have two questions if someone can PLEASE help. 1.solve the equation in the real number system. x^4+11x^3+24x^2-23x+35=0 **Please show work** 2.Use the remainder theorem to find the remainder. When f(x)is divided by x-3. Then use the factor theorem to

asked by Jennifer on December 30, 2012
59. ## College Algebra

Solve the system of equations using matrices. If system has no solution say its inconsistent. 6x + y = 5 3x - y + z - w = 8 z + w = 2 Solve the system of equations using Cramers Rule if applicable. 4x + 2y = 8/5 5x - 5y = 5

asked by coried on September 13, 2009
60. ## ntc

What is the solution using gauss jordan Elimination.. 2x-4y+5z=10 6x+8y+3z=12 X-7y-9z=63 Pls.help me to solve this problem

asked by ella ramos on December 2, 2015

solve the polynomial inequality and graph the solution set on a real num ber line. express the solution set in interval notation x^3+x^2+64x+64>0 please show work

asked by anonymous on January 10, 2013
62. ## math trouble

I have 2 problems I need help with using either substitution or elimination method what is the solution set of 3x -2y = -4 and 5x = 2y? Second, Given: log sub a 2 = .4, log sub a 3 = .5, log sub a 5 = .8 what is the value of log sub a .01? On the first, I

asked by Anonymous on January 13, 2007
63. ## Math

When using the elimination method does it matter which variable you choose to eliminate? How do you write the solution to represent the point if intersection? I guess it doesnt matter

asked by katie on September 13, 2011
64. ## 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

65. ## math

is each ordered pair a solution of the given system? write yes or no. 1. y=6x+12 2x-y=4 (-4, -12) 2. Y= -3x x=4y+1/2 (-1/2,3/2) 3.x+2y=2 2x+5y=2 (6,-2) 4. Solve the system by graphing. Check your solution. x + y=3 x - y=-1

asked by Anonymous on April 25, 2010
66. ## Algebra

Solve the system by substitution. State whether the system has one solution. Infinite solutions, or no solution. 2x+y=10 x-3y=-2 I believe that the answer is x=4 y=2

asked by Kalani on January 9, 2017
67. ## calculus

solve the following inequality 15x-16 less than or equal to 15/x is the point x=0 included in the solution set of the inquality? are the other finite pointsa of the interval included in the solution set? what is the solution set? please show work

asked by Heather on December 27, 2012
68. ## 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

asked by Ama on November 4, 2012
69. ## Algebra

Solve using the appropriate method. Substitution or Elimination. y = 2x - 5, y = 1/2x + 1 This morning I posted a question that Bosnian was kind enough to help me with but it was the wrong question that I was looking at. Sorry but I could really use some

asked by slomo on January 2, 2015
70. ## Algebra 2

Solve each polynomial equation. If a solution occurs more than once, state it's multiplicity. 4x^4-13^2+9=0 Please show work I need help

asked by Alicia on December 11, 2014
71. ## Math

Show all work solve the Polynomial inequality and express the solution in set notation. y^2+2y > or = to 4

asked by Anonymous on October 18, 2011
72. ## College Pre-Algebra

asked by Kameesha on November 22, 2011
73. ## College Algebra

Show all work solve the Polynomial inequality and express the solution in set notation. (3p-2p^2)/(4-p^2)

asked by Liz on October 18, 2011
74. ## Algebra

Cindy is selling tickets. The first day she sold 8 adult tickets and 5 child tickets for a total for \$180.50 in sales. The second day she received \$261 for 12 adult tickets and 5 child tickets. What is the price of an adult ticket? What is the price of a

asked by Fay on July 21, 2019
75. ## math

Solve for x and y using elimination ax+by=c bx+ay=c This question has been confusing me for a long time, and I can't seem to find the answer by solving using elimination. Thanks for helping me :)

asked by anonymous on March 19, 2018
76. ## chem

Under constant pressure, a system of gases is sealed in a cylinder and then allowed to expand. What can you conclude about the work associated with this change? A. Work is negative and is done to the system. B. Work is negative and is done by the system.

asked by jessie on August 20, 2016
77. ## Pre-calculus

Solve the system of linear equations and check any solutions algebraically. (If there is no solution, enter NO SOLUTION. If the system is dependent, express x, y, and z in terms of the parameter a.) x-3y+2z=21 5x-13y+12z=81 I have an answer but i'm not

asked by Sarah on October 19, 2015
78. ## 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

asked by Tonya on February 21, 2011
79. ## algebra

I must solve the equation using elimination. I have have only 1 Variable on the left side of the equal sign. ( Elimination is most convenient when the variables are lined up ) 2x-4y=14 4y-x=-3

asked by K A Y S H A on December 9, 2014
80. ## Math

I still don't know how to directly solve this problem. Can someone guide to solve this system of equation by using the substitution method? Thanks! 1. Y=6x-5 Y=-x+9

asked by Anonymous on January 29, 2014
81. ## maths

use the substitution method to solve the linear system. 1. 3x=9 -x+2y=9 3x/3 = 9/3 x = 3 -x(3)+2y = 9 -3+2y = 9 2y = 12 y = 6 is (3,6) correct? =========== also, can you please tell me how to solve these? use the linear combinations to solve the linear

asked by jenn on November 17, 2009

Thanks,what abou this one? Use the Substitution method to solve the system of equations. x + y = 10 y = x + 8 follow the same principle for the first one and u'll get it u already have y = x + 8 Subst. that in the first eqn and just follow up from there

asked by Margie on November 2, 2006
83. ## math

Elimination Method....I am not understanding this method either and need some help here is what I am working on: 1) x+8y=33 -x+4y=3 2) 5x+5y=-7 7x-2y=13 3) 0.3x-0.2y=4 0.5x+0.3y=-7/17 Can someone please help me with these!

asked by Kristin on March 13, 2010
84. ## math

solve by the elimination method: 9x-9y=18 7y-3x=-8 please solve step by step thank you for your help

asked by Richard on July 25, 2011
85. ## Algebra 1a

Solve the following system of equations. x+3y=6 x=8-3y What is the solution of the system? Type the ordered pair or indicate if there is no solution. Thank you very much

asked by Nikki on May 26, 2010
86. ## math

Solve. 2d−e=7 d+e=5 Use the linear combination method. The solution is (3, −1) . The solution is (4, 1). There are infinitely many solutions. There is no solution.

asked by Jay on February 9, 2017
87. ## math

Solve by substitution method 9x+6y=21-9x+y=35 What is the solution of the method?

asked by micheal on June 16, 2009
88. ## math

Find the solution of the given system by the method of addition that was used in Examples 4 and 5. If there is no solution or infinitely many solutions, state so. Put the value for x in the blank. 2x - 3y = 1; x + 2y = 4

asked by tanya on April 3, 2012
89. ## Math

Show all work solve the Math: Polynomial inequality and express the solution in set notation. 2t^2 - 3 < or = to t

asked by Anonymous on October 18, 2011
90. ## calculus

solve the following inequality. write your solution in interval notation. x^3+9x^2-108 less than or equal to 0 please show all work

asked by Josh on December 24, 2012
91. ## Math: Polynomial inequalities

Show all work solve the Math: Polynomial inequality and express the solution in set notation. 2t^2 - 3 < or = to t

asked by Anonymous on October 18, 2011
92. ## Algebra

Solve the inequality: x+8 over x-1 > OR = 0 Write the solution set in interval notation. Show work/explanation.

asked by Rachale on July 21, 2009
93. ## Math

What is the surface area of a rectangular prism with l = 14 in., w = 12 in., and h = 4 in.? * Show your work and solution below. I don't know how to solve this please help ASAP!

asked by Aaliyah M on March 18, 2016
94. ## Math

solve for 9x-21y=28 -9x+21y=21 in elimination method

asked by Jason on November 8, 2011
95. ## algebra

Solve by the elimination method. x+4y=45 -x+4y=27 please step by step

asked by seirre on August 1, 2011
96. ## MATH!!!! AHHH!!!

Im studying for finals! A system of equations is shown below: 8x + 5y = 9 3x + 2y = 4 Part A: Create an equivalent system of equations by replacing one equation with the sum of that equation and a multiple of the other. Show the steps to do this. Part B:

asked by Bella on January 14, 2015
97. ## Linear Algebra

Use Gauss Jordan Elimination to write the solution of the system of equations: x1+4x2+2x3=17 3x1+x2-5x3=7 2x1-3x2-7x3=-10

asked by Sharon on March 15, 2014

Megalodon Lives Angler went fishing and caught a monster of a fish! The head of the fish was 10 feet long. The length of the tail was equal to the length of the head plus half of the body. The body was as long as the head and the tail together. What was

asked by Linda on December 7, 2011
99. ## Algebra word problem

Megalodon Lives Angler went fishing and caught a monster of a fish! The head of the fish was 10 feet long. The length of the tail was equal to the length of the head plus half of the body. The body was as long as the head and the tail together. What was

asked by Linda on December 6, 2011
100. ## physics

The internal energy of a system changes because the system gains 180 J of heat and performs 338 J of work. In returning to its initial state, the system loses 111 J of heat. During this return process, what work is involved? If the work is done by the

asked by S on December 3, 2014