# 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 9
1. ## Math 2 questions

Use the substitution method to solve each linear system: -x+3y+1=0 3x-y+1=0 4x-3y=-13 -2x+y=4 Please help, thanks:):)!!!!

asked by Miley on November 18, 2013
2. ## math - hw help. plz

How to I solve this linear system using method of substitution? 1/4x + 1/2y = -5/12 2x - y = -4/3

asked by TD on April 10, 2015
3. ## algebra

solve the system of equations using the substitution method 8x - 9 = y, y - 8x = 4

asked by Anonymous on January 13, 2015
4. ## alegebra

solve this system of equation using the substitution method. 6x+8y=72 2x+5y=45

asked by thomas on July 24, 2011
5. ## algebra

Use the substitution method to solve the linear system. Thanks! s= t+4 2t+s=19

asked by Emma on January 6, 2013
6. ## math

Use a substitution method to solve the linear system 2a=8 a+b=2

asked by Tila on January 9, 2008
7. ## Math

I have to solve the system. 3x + y = 12 y = 9 - 3x I used the substitution method to get 3x + 9 - 3x = 12 But now I'm stuck.

asked by Riley on November 12, 2008
8. ## algebra

solve the system of equations using the substitution method 8x - 9 = y y - 8x = -4

asked by Anonymous on January 13, 2015
9. ## Algebra

-3x + 2y = 8 x + 4y = -4 use substitution method to solve the linear system.

asked by Bun on February 22, 2011
10. ## Algebra

Use the substitution method to solve the linear system. 1/8p+3/4q=7 3/2p-q=4 Thanks.

asked by Emma on January 6, 2013
11. ## Math

Solve each system using the method of your choice. 1. 7x+2y=17 2. 6x-5y=-9 3. y=4x-8 4. y=2x+10 5. 3x-6y=30 6. y=-6x+34 7. 3x+y=5 8. 15x+5y=2 9. 2m=-4n-4 10. 3m+5n=-3 11. 5x+y=0 12. 5x+2y=30 Thank you. (:

asked by Melanie on February 11, 2014
12. ## algebra 2

Solve the system by the addition method x+3y=-2 5x+15y=-10

asked by saRa on November 4, 2009
13. ## Algebra 1

solve the system of equations using the substitution method. 8x-9=y, y-8x=-4

asked by slomo on January 11, 2015
14. ## Algebra Help Please

solve the system of equations using the substitution method 8x - 9 = y y - 8x = 4

asked by slomo on January 11, 2015
15. ## MATH

Use the matrix method to solve the system of equations 2x + 4y = 8 and 6x + 3y = -3.

asked by lOVEJOY on November 5, 2014
16. ## Algebra

Solve the following system of equations using the substitution method:5x-7y=-18 and 4x+3y=20

asked by Marie on December 13, 2014
17. ## algebra

how do you use the substitution method to solve the linear system? -2x-5y=7 7x=y=-8

asked by aneme on February 12, 2008
18. ## math

solve the system. Give the x-value of the solution. 3x-5y=16 and -9x+15=48 answer key: 7 0 no solution infinite number solution

asked by Fe on July 9, 2016
19. ## math ergent please...

10.a)Solve the inequality x^3-5x^2+2x+8

asked by kavi on November 27, 2013
20. ## Algebra

Ok, I tried watching a video on how to solve a system by substitution. But I feel like I did it wrong, so can someone check my work and show/ tell me where I went wrong. So the system by substitution -2x-3y=-2 Y=2x+6 First I combined my 2 equations but

asked by Samantha on October 10, 2017
21. ## Algebra

Solve by the substitution method 9x+8y=-5 x=40-9y The solution is _______ or there is no solution

asked by Liz on March 21, 2010
22. ## Mathematics

Solve the following differential equation, i.e. solve for y: dy/dx - y/x = 1/x + y + 1 I have this so far, 1. dy/dx= (y + 1 + xy + x)/x 2. x dy = (y + 1 + xy + x)dx 3. Integrate both sides... xy + c = xy + x + .5x^2y + .5x^2 + k where c and k are constants

asked by xX_Supaman_Xx on December 29, 2007
23. ## PRE CALC

Use matrices to solve the system. (If the system has infinitely many solutions, express your answer in terms of c, where x = x(c), y = y(c), and z = c. If the system has no solution, enter NONE for each answer.) 5x+2y-z=2 x-2y+2z= -1 3y+z= -17 ive done

asked by gabs on June 7, 2011
24. ## HELP!

The problem using elimination/substitution methods what is the solution set to 3x -2y =-4 and 5x=2y the choices a)(2,-5) b)(-2,-5) c)(2,5) d)(-2,5) Please, Please, Please, HELP! 3x-2y=-4 -5x +2y=0 add the equations, solve for x. That makes it a or c. Put

asked by Anonymous on January 16, 2007
25. ## Differential Equations

Consider the spring - mass system, shown in Figure 4.2.4. consisting of two unit masses suspended from springs with spring constants 3 and 2, respectively. Assume that there is no damping in the system. Show that the displacements u1, and u2 of the masses

asked by Daoine on May 13, 2014
26. ## Math Help Plz fast

13. Describe the number of solutions for the equation. 10(x-2)=10x A.) one solution B.) no solution C.) infinite solutions*** 14. Describe the number of solutions for the equation. -2(y-3)=2y-6 A.)one solution B.)no solution*** C.)infinite solutions 18.

asked by Aaliyah on February 8, 2016
27. ## Algebra

Explain how you can determine from the graph of a system of two linear equation in two variables whether is an inconsistent system of equation. 2. When you solve a system of equation by the substitution method how do you determine whether the system of

asked by Angelina on October 14, 2015
28. ## 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

asked by kasidy on February 1, 2017
29. ## algebra

use method of substitution to solve the system of linear equation 3x+4y=3/2 y=2x-1

asked by scott on March 29, 2012
30. ## algebra

Solve the system of equations using the linear combination method. {9x+5y=35 2x+5y=0

asked by kim on March 29, 2018
31. ## algebra 1

Solve the following system of linear equation using any algebraic method. 2x+5y=3 X-3y=7

asked by Janet on October 31, 2012
32. ## alg 1

use the method of substitution to solve the system of linear equation 2x-y=5, 9x-4y=22

asked by Shannon on June 13, 2012
33. ## Math

Solve the following system of equations using the cross multiplication method,ax+by=a-b;bx-ay=a+b

asked by Lavinia on July 8, 2013
34. ## algebra 1

Solve the following system of linear equation using any algebraic method. 2x+5y=3 X-3y=7

asked by Janet on October 31, 2012
35. ## algebra 1

Solve the following system of linear equation using any algebraic method. 2x+5y=3 X-3y=7

asked by Janet on October 31, 2012
36. ## Algebra

Solve the system of linear equations using the substitution method. 3x + 3y = 0 -6x + 9y = -10

asked by Ashley Kate on January 6, 2014
37. ## Math

Use the echelon Method to solve the system of three equations in three unknowns. 2x+y+z=9 -x-y+z=1 3x-y+z=9

asked by Erin on November 6, 2010
38. ## math(algebra 1)

i don't get these please help me: use the subtitution method to solve the linear system 1)3x+y=0 x-y=4 2)y=-3x-1 x-3y=3 3)3x-y=9 2x+y=6 4)x-2y=0 3x+y=0 Thank you!!:)

39. ## 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

asked by victor1 on July 28, 2011
40. ## maths

use the inverse method to solve the system of linear equations -x +3y+2=1 2x+5y=3 3x+y-2z=-2

asked by chrystabelle on December 1, 2011
41. ## TO ANY MATH HELPERS

Pleeeese help! Use the substitution method to solve each linear system: -x+3y+1=0 3x-y+1=0 4x-3y=-13 -2x+y=4 Please help, thanks:):)!!!!

asked by Miley on November 18, 2013
42. ## Algebra 2

solve each equation. check for extraneous solution. sqrt(3x+4)-sqrt(2x-7)=3 please show work!!!!!

asked by maria on February 9, 2015
43. ## Algebra

To solve the following system of equations by elimination, which operation would you perform first? 234x + 65y = 219 1225x + 65y = 427 F. addition G. subtraction H. Multiplication I. division

asked by LadyPhantomhive on January 11, 2016
44. ## Chemistry

For a solution that is 0.20 M HCN(aq) with a Ka=4.9x10^-10 a. calculate the [H+] b. calculate the [OH-] c. what's the pH? Please show your work on how to solve it. Thank you

asked by Sharon on January 27, 2011
45. ## Math 7 A

Note: For questions 5 and 6, remember to show all of the steps that you use to solve the problem. Be sure to use the text box where the question mark (?) first appears to show your mathematical work. You can use the comments field to explain your work.

asked by jesse on November 20, 2017
46. ## college algebra

What is the answers and break down of them, Typing hint: Type x 2 as x^2 (shift 6 on the keyboard will give ^) 1) Solve the following quadratic equation by factoring: a) 7 010 2 xx =++ Answers: Show your work here: b) Solve the quadratic equation using the

asked by jim on February 14, 2012
47. ## chemistry

1.)Calculate the number of moles in 3.50 x 10^21 atoms of silver. Show all work. 2.) Calculate the number of atoms in 2.58 mol antimony. Show all work 3.) Determine the mass of 1.45 mol FePO4. Show all work. 4.) Calculate the number of mol in 6.75 g of

asked by Raina on February 9, 2014
48. ## pre-algebra

Would someone please reword this? Note: Remember to show all of the steps that you use to solve the problem. Be sure to use the text box where the question mark (?) first appears to show your mathematical work. You can use the comments field to explain

asked by BleakTuber on December 6, 2018
49. ## Algebra

3x+4y=12 solve for solution (0.)(.3/4) (,0) (8/3,) You are given the equation, and the x,y set. Iwill be happy to critique your work. Here is one as an example: 3x+4y=12 solve for solution (.3/4) 3x + 4(3/4)=12 3x + 3=12 3x=9 x=3

asked by Paula on September 16, 2006
50. ## Science

If it requires 23.4 milliliters of 0.65 molar barium hydroxide to neutralize 42.5 milliliters of nitric acid, solve for the molarity of the nitric acid solution. Show all of the work used to solve this problem. Unbalanced equation: Ba(OH)2 + HNO3 ->

asked by Elain on March 15, 2016
51. ## Chemistry

If it requires 23.4 milliliters of 0.65 molar barium hydroxide to neutralize 42.5 milliliters of nitric acid, solve for the molarity of the nitric acid solution. Show all of the work used to solve this problem. Unbalanced equation: Ba(OH)2 + HNO3 ->

asked by Lilly on March 15, 2016
52. ## Quick math help

Can someone please check my math Hw? Thank you!! Solve each system by elimination. 1. 8x+7y=-1 -9x-7y=2 I got (-1,1) 2. 4x+3y=1 -4x-7y=-13 I got (2,-2) 3. -7x-6y=-21 -x-6y=-3 I got (3,0) 4. -2x+3y=-16 -2x-5y=-16 I got (8,0) 5. -7x+2y=13 -14x+4=26 I got

asked by Anonymous on January 27, 2014
53. ## physics

At the end of the semester, you are loading your gear into a van to go home. In loading the van, you can either lift a 45.0-kg crate straight up(method 1) or push it up a 3.00-m-long ramp that is inclined at an angle above the horizontal (method 2).In both

asked by ajo on December 9, 2007
54. ## math

elimination method -3x+4y=19.5 -3x+y=10.5

asked by sam on July 22, 2012
55. ## Algebra

Elimination method: x+5y=-13 2x-5y=-19 ( , )

asked by Mike Barrow on November 28, 2011
56. ## math

asked by sally on September 26, 2015
57. ## algebra

what is 7x-9y=13 and 9x+7y=91 elimination method

asked by beverly on August 7, 2013
58. ## math

1/2x+1/3y=5 1/4x+1/3y=4 elimination method

asked by dawn on December 13, 2010
59. ## alberga

3r-5s=-4 5r+3s=16 elimination method

asked by Anonymous on October 29, 2011
60. ## algebra

what is -3x-y=-15 using the 8x+4y=48 elimination method

asked by kyra on April 13, 2011
61. ## Algebra

using elimination method x + 6y = 58 -x + 7y = 59 Help please!!!!

asked by Michael R on August 24, 2014
62. ## math

elimination method 4p+3q=6 and 3p-5q=-10

asked by john on February 19, 2019
63. ## algebra

elimination method 3r-5s=-14 5r+35-56

asked by shirley on January 8, 2011
64. ## mathematics

2m+n=3 3m+4n=2 In Elimination method

asked by Delight on November 16, 2016
65. ## Solve Inequality

Solve the inequality. Express your solution using interval notation and please show all of your work. x(x + 6)(8 – x) >= 0 I need help, I guess I'm not understanding the interval notation portion. I know, that when 0

asked by Armando on May 29, 2011
66. ## Algebra

Use substitution method to solve the linear system. Can someone please check if I did this problem right? Thanks X+y=12 X+3/2y=3/2 Y=21 x=-9

asked by Emma on January 6, 2013
67. ## Math(Solve the system)

So I guess I have to: Solve the system using any algebraic method. I'm not sure how so here is the problem I'm stuck on. 9x-5y=-30 x+2y=-3

asked by Nick on March 6, 2008
68. ## pre calculus

Algebraically solve the system of equations using any method you wish 3x-10y+z=5 -4x+9y-z=-6 -13y+z=2

asked by Natasha on October 7, 2012
69. ## math

Solve the following system of linear equations using the matrix inverse method 3x + 2y = 7 4x + 3y =10

asked by MATRIX on May 31, 2011
70. ## Chemistry

1) Using a table of standard electrode potentials (such as the one in your textbook), calculate the standard cell potential for a cell made by placing a zinc electrode in a Zn2+(aq) solution which is connected by an electrolyte to a Ag+(aq) solution

asked by CHEM HELP ASAP on May 13, 2014
71. ## math

please can you help me solve the following equations and please can you show your method. thanks 1) 4x+3/5x-6 = x-1/x-6 2) 4x-5/1-6x = x+10/x-6 thanks once again

asked by peter on October 30, 2010
72. ## Algebra II

What is the first step for solving this system by substitution? DO NOT SOLVE!! 3x-2y=8 x+7y=10 How many solutions does this system of equations have? 3y-6x=12 y-2x=4 My answer is 1 solution. Is this correct?

asked by JaneLee on October 28, 2007
73. ## Algebra

Solve the following system by graphing. If there isn't a unique solution to the system 5x-3y=-36 3x+5y=26

asked by Shirley on March 31, 2014
74. ## math

Solve the system:4x+2y-13=0 and 3x=5y+26 by elimination. 3 (4x+2y-13=0) 12x+6y-26=0 4 (3x=5y+26) 12x=20y+104 I need to subtract since the signs are the same: 12x+6y-26=0 Since they don't match up, I'm having trouble subtracting them. I'm not sure what to

asked by alisha on June 3, 2017
75. ## Math (Help!)

Note: Remember to show all of the steps that you use to solve the problem. Be sure to use the text box where the question mark (?) first appears to show your mathematical work. you can use the comments field to explain your work. Your teacher will review

asked by Ive on November 2, 2016
76. ## algebra

Solve the following system of linear equations: 2x2+4x3+2x4 = −5 5x2+10x3+5x4 = −15 x1+2x2+2x3−3x4 =3 If the system has no solution, demonstrate this by giving a row-echelon form of the augmented matrix for the system.

asked by sal on October 7, 2018
77. ## chem

How many liters of 12.3 molar NaOH stock solution will be needed to make 12.4 liters of a 1.2 molar NaOH solution? Show the work used to solve this problem.

asked by jose on April 6, 2011
78. ## Math

Solve the following system of equations. x + 4y= 8 (1) x=5-4y (2) What is the solution of the system? (Type an ordered pair. Type N if no solution).

asked by Melinda on August 2, 2008
79. ## pre-calculus

Solve eacy system of inequalities. If the system has no solution, say that it is inconsistant. x -y -z = 1 2x +3y +z = 2 3x +2y = 0 add the top two equations. 2x+2y =3 That is inconsistent with the last equation.

asked by Erica on October 24, 2006
80. ## Algebra 1

Solve each of the following system by addition. If a unique solution does not exist,state whether the system is inconsistent or dependent. equation is like this x+5y=10 -2x-10y=-20

asked by Candy on September 3, 2007
81. ## Algebra 1

Solve the following system by using either addition or substitution. If a unique solution does not exist, state whether the system is dependent or inconsistent. 10x+2y=7 y=-5x+3

asked by BB on December 27, 2007
82. ## math

Solve this system 10x+2y=7,y=-5x+3 by addition or substitution. If a unique solution does not exist state if the system is dependent or inconsistent.

asked by james b on January 22, 2008
83. ## Chemistry

Hi! My name's Isabow! can someone please help with this question? Thanks in advance :3

asked by Isabow on March 14, 2016
84. ## Algebra

The Coffee Counter charges \$9.00 per pound for Kenyan French Roast coffee and \$8.00 per pound for Sumatran coffee. How much of each type should be used to make a 20-lb blend that sells for \$8.40 per pound? Here are the 2 equations (or system of equations)

asked by Valeria on February 20, 2009
85. ## Algebra question

When you solve a system of equations by the substitution method, how do you determine whether the system of equations is dependent? If your variables disappear as you simplify, and you end up with 0=0 (or k=k) the system is dependent. (really just the same

asked by Nik on August 14, 2007
86. ## Math

Lee has 35 dimes and quarters that total \$5.00. Solve the system of equations to find how many dimes and how many quarters he has. d+q=35 0.1d+0.25q=5 Please show your work thanks

asked by Sadie on February 25, 2012
87. ## 7th grade math

How would you solve the problem below using subsitution method? 7x - 2y = 5 x = y If you could explain and show this step by step, it would help a lot. How would you solve the problem below using combination method? 3x - 2y = 12 -3x + 8y = -6 If you could

asked by saranghae12 on April 9, 2012
88. ## chemistry

Calculate the amount of solute needed to make each of the solution. 225g of a 10% (m/m) K2CO3 solution .50kg of a 18% (m/m) KOH solution please show work thanks

asked by Boo Boo on November 23, 2012
89. ## Math 116 algebra please check

Solve the following system of equations x + 6y =4(1) x = 9-6y (2) What is the solution of the system N There is no solution

asked by jay jay on July 16, 2008
90. ## Algebra help needed please!!

I have a few questions I need help with! 1. Solve the system by triangularizing the augmented matrix and using back substitution. If the system is linearly dependent, give the solution in terms of a parameter. -3x+y-z=-4 6x-2y+2z=8 -12x+4y-4z=-16 2. Solve

asked by Kris on March 28, 2013
91. ## Algebra

I have a few questions I need help with! 1. Solve the system by triangularizing the augmented matrix and using back substitution. If the system is linearly dependent, give the solution in terms of a parameter. -3x+y-z=-4 6x-2y+2z=8 -12x+4y-4z=-16 2. Solve

asked by Kristen on March 27, 2013
92. ## Algebra

I'm confused regarding the elimination method for 5x - 7y = -16, 2x + 8y = 26

asked by Ericka on November 9, 2013
93. ## math

1) x+8y=33 -x+4y=3 I need help solving this one using the elimination method!

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

3x=5y 6x-7y=17 Using Elimination Method (?) Find x and y

asked by lilly on April 1, 2019
95. ## Math

Q.1. Define Elimination Method.

asked by Vedprakash Solanki on September 26, 2016
96. ## Math

solving using the elimination method 0.3x-0.2y=4 0.2x+0.3y=5/23

asked by Janelle on August 10, 2014
97. ## college

How o Isolve by using the elimination method. 5x + 5y= -7 7x - 2y= 17

asked by Trina on June 5, 2010
98. ## gips ghoman

6=6x+6y -14=18x+14 use elimination method

asked by Raman on June 21, 2015
99. ## math help me plz

elimination method 1> 7x+15y=32 x-3y=20

asked by Anonymous on January 7, 2009
100. ## man

How to -2x+6y=-26 8x+6y=-1 6using elimination method

asked by Ray on March 24, 2014