# 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 16
1. ## math 20 system of equations

I have been solving system of equations graphically and using addition and subtraction and now I'm being asked: Give any linear system of two equation that has a solution of (3,5). Does it have to be in y=mx+b form and if so how do I do it? I've been

asked by Sandi on October 12, 2010
2. ## Algebra

I was given this answers to a problems I solved but I do not understand what she means hope you can help. Before attempting to solve this quadratic equation, determine how many solutions there will be for this quadratic equation. Explain your reasoning.

asked by Charly on June 2, 2011
3. ## Algebra

I was given this answers to a problems I solved but I do not understand what she means hope you can help. Before attempting to solve this quadratic equation, determine how many solutions there will be for this quadratic equation. Explain your reasoning.

asked by Charly on June 2, 2011
4. ## Applied Math (Biological application)

The deformation y(t) of heart muscle from its rest position after t seconds can be modelled as a spring-mass system, described by the differential equation: my" + vy' + ky = F(t) where m, v, and k are positive constants denoting the mass of the myocardial

asked by Joey on March 19, 2014
5. ## Algebra22222!!!

Choose the ordered pair that is a solution to the system of equations. 3x - y = 10 -x + y = -4 (3, -7) (-1, 3) (3, -1) (3, 1) Follow the example I gave in your previous question. I'm not going to do all of them. You want to eliminate one of the variable

asked by Margie on October 14, 2006
6. ## Math

19-(3-x) = 5x. Can u show your work please? I know how to solve questions like these but couldn't figure it out with that x after the 5 '

asked by Jessica on January 25, 2013
7. ## math

solve each of the following equations by completing the square and show your work x² + 6x + 24=0

asked by Derek on September 7, 2008
8. ## algebra

how would i solve this question. Please show work 12000 + 7t^2 + 6000

asked by Amy on December 5, 2008
9. ## math

solve each of the following equations by completing the square and show ur work x²-4x=32

asked by Derek on September 7, 2008
10. ## Algebra 1

Formulas: Please solve the equation for x. y=2/3x+8 2/3 is a fraction. PLEASE SHOW YOUR WORK I REALLY NEED HELP.

asked by K-cee on October 1, 2009
11. ## Algebra 2 URGENT

Solve. Square root of 3x+4=x BobPursely can you please show me the work

asked by Trisan on November 7, 2009
12. ## math

solve the equation. log2(x+4)-log4x=2 please show work

asked by anonymous on January 8, 2013
13. ## Math

asked by Cacey on April 15, 2012
14. ## Algerbra I

Help me solve this. Please show me the work so I know how to do it. The difference between a number and twice it's reciprocal is 17/10.

asked by Carol on April 30, 2009
15. ## function and trig.

(1/x - 3/x+4) / 1/x square -16 please help me with this question if you can show the work or explain how to solve. thank you

asked by yaneth on January 15, 2009
16. ## Math

The original price is \$36.00 and i have a discount for 30% how do i solve an show work

asked by Mackenzie on April 5, 2011
17. ## math

7 over x + 8 equals 6/2 x solve for x show work and how can I get some help with this question results now

asked by kelly on March 9, 2016
18. ## Math

The original price is \$36.00 and i have a discount for 30% how do i solve an show work?

asked by Mackenzie on April 5, 2011
19. ## college alg

solve the following inequality x^2(8+x)(x-5)/ (x+5)(x-2)> or equal too 0 this looks like a fraction please show work

asked by MYA on September 5, 2012
20. ## math

So the problem is 9 = w + (-8) I know the answer is 17. But I don't know how I solve it/show work.

asked by lily on November 13, 2009
21. ## MAth

asked by MIke on May 6, 2018
22. ## calculus

solve the inequality algebraically 7x-6 less than or equal to 3x^2 please show work

asked by Kyrstal on December 27, 2012
23. ## Algebra 1

solve this equation. show ur wrk work plz. 8y-(2y-3)=9

asked by Tanisha on September 17, 2009
24. ## Algebra

asked by Anna on December 3, 2008
25. ## Algebra 1

Solve each equation by using square roots, show all work. 2x^2-5=27

asked by Caitlyn on November 30, 2017
26. ## calculus

Solve the equation 2cos(x)+1=0,0≤x≤2π0≤x≤2π. Show all of your work.

asked by rosie on March 13, 2019
27. ## math

(1/x - 3/x+4) / (1/x square - 16) please help me with this question if you can show the work or explain how to solve.

asked by leah on January 15, 2009
28. ## Algebra

I am confused on how solve this substitution problem 4y+3=3y+x 2x+4y=18 If you can, show work please (:

asked by Stephanie on February 22, 2013
29. ## Algebra

Solve the following equations. Show all your work. (2 points) x/x-2 +x-1/x+1 = -1 PLZ help :D

asked by Doesn'tmatter on June 6, 2017
30. ## Math

Solve the quadratic equation below. Show your work and check -4x^2 = 0

asked by Jenny on November 2, 2009
31. ## MATH

Solve x divided by nine is less than or equal to negative three for x. Show your work

asked by cha on April 25, 2012
32. ## math

use either substitution or elimination to solve 8x+15y=13 2x-5y=-1

asked by james on January 2, 2011
33. ## math

how do i solve systems of three equations with elimination??

asked by Lena on October 20, 2008
34. ## algebra

Solve by elimination. 15x+10y=-20 3x+2y=-4

asked by Kim on June 13, 2008
35. ## algebra 1

solve 5x-12y=-3 and 10x-4y=-25 by elimination

asked by Lexi on December 18, 2014
36. ## math

solve the systems of equations by elimination. 6x-y=18 2x+y=7

asked by pam on February 4, 2011
37. ## algebra 2

3x+y+z=14 -x+2y-3z=-9 5x-y+5z=30 linear equations solve by elimination

asked by aaron on September 30, 2015
38. ## math

how do I solve quadratic equations by elimination? eg: 6x^2-3x=2y-5 2x^2+x=y-4

asked by Mistaking on November 29, 2014
39. ## Elementary Algebra

How do you solve by elimination this linear equation? 8x-3y=-6, 5x+6y=75

asked by Wanda on August 6, 2012
40. ## algebra

2x +y+3z=-1,(a+3)x+2y+8z=2,3x+y(a+1)z=1 solve for a, by gauss-jordan elimination

asked by dmx on November 13, 2011
41. ## introductory algebra

I had these problems on my test and for some reason got them wrong. Here are the problems: Solve: x-y=9 x+y=1 The test states that the answer is (5,-4) I've checked ,y work and used substitution to solve this and still get x=4, y=-5. The second problem is:

asked by jose on May 23, 2010
42. ## Algebra Question

I did a problem and used the substitution method and it took me forever to solve by hand. Is there a shorter way to show how this problem was done. The problem was x+y+z=7,x-y+2z=7,2x+y+3z=15 The final answer came out to be x=4 z=2 y=1

asked by mike on December 18, 2009
43. ## Algebra

Doing a slope project in Algebra. The instructions are to make a picture And label coordinates points.. You have to show a negative slope. A verticle slope, an undefined slope, And a positive slope. Here is my problem. I have to write An equation and show

asked by DONT KNOW WHAT TO DO on October 30, 2014
44. ## algerbra

the modern grocery has cashews that sell for \$4.75 per lb. and peanuts that sell for \$2.25 per lb. how much of each must the grocer mix to get a 100 lbs. of mixture that he can sell for \$3.00 per lb.express the probrlem as a system of linear equations and

asked by jr on December 8, 2008
45. ## math

The perimeter of a rectangular cattle enclosure is 400 feet. It is 40 feet longer than it is wide. Using a system of equations solve for the length and width of the enclosure using the substitution method.

asked by jordan on December 13, 2015
46. ## math ,correction

Directions: Solve each of the following problems. Be sure to show the equation used for the solution. The length of a rectangle is 2in. more than twice its width. If the perimeter of the rectangle is 34 in., find the dimensions of the rectangle. Let L =

asked by jasmine20 on February 5, 2007
47. ## Precalculus

I know I posted this already but.. I don't understand what exactly is the answer, since the answer key shows the intersection of the circle and hyperbole at (-5,0) What about (7.5,0)???? By the way the graph has one intersection point... How do you know

asked by Anonymous on May 24, 2014
48. ## Algebra

Use a system of equations to solve problem Emily emptied her bank ana totaled the nickels, dimes, and quarters that she had saved. The total amount was 14.50 The number of dimes was 2 more than 3 times the number of nickels. How many of each coin were

asked by Chris on December 10, 2008
49. ## I need HELP!!!!

Use a system of equations to solve problem Emily emptied her bank ana totaled the nickels, dimes, and quarters that she had saved. The total amount was 14.50 The number of dimes was 2 more than 3 times the number of nickels. How many of each coin were

asked by Chris on December 10, 2008
50. ## MANAGERIAL ACCOUNTING

#1 chin company incurred direct materials costs of \$300,000 during the year. manufacturing overhead rate is 70%. how much are chin company total manufacturing costs for the year? #2 wrapping department's output during the period consist of 10,000 units

asked by mia on July 3, 2007
51. ## chemistry

How do I balance the following equation by the half-reaction method (it takes place in basic solution)? Fe(OH)2(s) + O2(g) = Fe(OH)3(s) the answer is 4Fe(OH)2(s) + 2H20(l) + O2(g) = 4Fe(OH)3(s) but how do I work it out?

asked by Lydia on October 7, 2012
52. ## Algebra - College intro

I'm having trouble learning "Solving systems of equations by graphing". Can you show me how to do the following problem? X + Y = 2 X - Y = 0 Solve the system. I know it should be easy, but for some reason I just don't see it.

asked by Dean on July 12, 2008
53. ## substitution and elimination methods

Can someone please help explain this, my notes aren't helping me much. Given the following system of linear equations: {x-4y=20 -3x+4y=-12 The solution to the system is: The system is: The equation is: Please help

asked by Carlos on April 7, 2017
54. ## Math

Evan found a way to find the product of 36 x 15. 36 x 15 = ( 30 + 6 ) = ( 10 + 5 ) = 300 + 150 + 60 + 30 = 540 a. Does Evan's method work for finding 35 x 15? Explain. b. Use Evan's method to find ( 2 + n )(3 + 5). c. Use Evan's method to find ( n + 2)(a +

55. ## math

how to solve (3a squared+3a+3)+(15a squared+2a-9) need the steps on how to solve this I have to show all work

asked by shawnee on December 12, 2012
56. ## Accounting

In its first month of operations, Cisler Company made three purchases of merchandise in the following sequence: (1) 300 units at \$6, (2) 400 units at \$8, and (3) 500 units at \$9. Assuming there are 200 units on hand at the end of the period, compute the

asked by Casey on February 27, 2012
57. ## Accounting

In its first month of operations, Cisler Company made three purchases of merchandise in the following sequence: (1) 300 units at \$6, (2) 400 units at \$8, and (3) 500 units at \$9. Assuming there are 200 units on hand at the end of the period, compute the

asked by Casey on February 26, 2012
58. ## Accounting

In its first month of operations, Cisler Company made three purchases of merchandise in the following sequence: (1) 300 units at \$6, (2) 400 units at \$8, and (3) 500 units at \$9. Assuming there are 200 units on hand at the end of the period, compute the

asked by Casey on February 27, 2012
59. ## calculus

Solve the two sided inequality and show the solution on real line 7 < 1-2x ≤ 10

asked by mary on October 25, 2010
60. ## algebra

Show all steps solve the equation check for extraneous solution 9|9-8 x|=2x+3

asked by Molly on February 18, 2014
61. ## algebra

Solve this equation. Identify any extraneous solution. Show all steps. x = [3x + 40]

asked by sharl on May 13, 2011
62. ## physics

A system undergoes a two-step process. In the first step, the internal energy of the system increases by 368 J when 144 J of work is done on the system. In the second step, the internal energy of the system increases by 24 J when 248 J of work is done on

asked by Will on April 26, 2008
63. ## Physics

We have a heat engine that produces 150 J of heat, does 40 J of work, and emits 110 J into another system. What is the efficiency of the heat engine? (show you work)

asked by Mark on December 7, 2016
64. ## Chemistry

What volume of a 0.176 M Na2S solution contains 1.01 g of Na+ ions? Please show work, I appreciate your help

asked by MARIE on November 19, 2010
65. ## Circuits and electronics applications3

We are working on finding the particular solution for the first-order linear constant-coefficient ordinary differential equation: RCdvP(t)dt+vP(t)=Vicos⁡(ωt) The new idea is to find the particular solution for the related equation

asked by sengeni on November 25, 2016

In a certain process 500 cal of heat is given to a system and the system does 100J of work. What will be the increase in internal energy of the system?

asked by Tulika on April 9, 2012
67. ## Chemistry

If the internal energy of a thermodynamic system is decreased by 300 J when 75 J of work is done on the system, how much heat was transferred, and in which direction, to or from the system?

asked by N/A on November 2, 2008
68. ## math

Note: Enter your answer and show all the steps that you use to solve this problem in the space provided. The angles opposite the congruent sides of an isosceles triangle are congruent. Find the value of x in the triangle. Show all your work.

asked by f on February 22, 2019
69. ## math

I'm trying to follow a research paper The paper shows an equation to minimize. That makes perfect sense. Then, the paper says: "The optimal solution to the least squares problem [above] is found by differentiation as a solution of a linear system of

asked by mathstudent on April 18, 2008
70. ## CAlculuss

Solve the equations algebraivally, test the solution for validity, and graph the system to check your number of solutions. x^2-2y^2=2 xy=2

asked by Jen on November 24, 2017
71. ## Linear Algebra

Consider the system x-2y=k-1 4x+(1-k^2)y=8 For what values of k does the system have a. unique solution? b. infinitely many solutions? c. no solution?

asked by Dan on December 18, 2012

ok this your supposed to use the quadratic formula i think... ok a tunnel is 4 m wide and 4 m high. /|\ / | \ /__|__\ 4m and a truck is 2 m wide and has to drive through it (Through the middle). what is the maximum height that the truck can be? if your can

asked by trish on December 7, 2006
73. ## algebra

solve. show work .000006 .000002 _____ = _________ x² (4-x)²

asked by seb on January 3, 2011
74. ## algr.1

1/4n+12>3/4n-4 solve the inequality and please show the steps I don't understand how to work it Thanks

asked by Jessica on September 9, 2012
75. ## trig

Solve for x if sin2x=cos(x+60 and x€ [-90,180].show all work details

76. ## algebra

this is probablt really simple, but for some reason I can't find out how to do it... solve for b; 2a/bc= 12 (show your work)

asked by Ana on October 8, 2010
77. ## Math Systems

I cannot solve these last three systems. Could you show me the work for them so i understand how to do them. 1) x-y=1 2x+y=5 3x-4y=2 2) 5x+8y+6z=14 2x+5y+z=12 -3x+6y-12z=20 3) x^2+2xy-2y^2=-11 x^2+xy-2y^2=-9

asked by Sam on April 6, 2013
78. ## College Algebra

asked by Naiya on December 8, 2015
79. ## Algebra

Can you please solve this I don't understand I know the answer is b>3 but If you can break it down for me and show work? (: 3b+12>27-2b

asked by Anon on March 5, 2013
80. ## Algebra 1

Solve the equation by factoring, show all work. 25x^2-30x+9=0

asked by Caitlyn on November 30, 2017
81. ## Algebra 1

Complete the square to solve the problem, show all work. x^2-16x=-4

asked by Caitlyn on November 30, 2017
82. ## Algebra 2

Complete the Square Solve each equation x^2+8x+16=16/9 Show work i want to learn!!!

asked by Alicia on November 13, 2014
83. ## TRIG,

Can you solve and show me the work in these two equations? cos(3x)=-1 tan (theta)=-1

asked by Sarah on January 12, 2014
84. ## Math

Hi,Ms.Sue again. I was wondering if you could help me with my math? Solve for . Show all work. (3 points) 1/5 (2x-10)+ 4x = -3 (1/5x+4)

asked by ToosieRoll on January 22, 2015
85. ## math

solve each of the folowing equations by factoring and show your work x²+x²=13x²-36

asked by Derek on September 7, 2008
86. ## Algebra 2

Use grouping to solve each of the following equations. 36x+2x^3-36-2x^2=0 Please show work I want to learn how to do it.

asked by Alicia on December 11, 2014
87. ## Intermediate Algebra

Rewrite the following as an equivalent logarithmic equation.Do not solve. Show your work. m^n=r

asked by Kris on June 10, 2010
88. ## Algebra

Rewrite y=1/6x-5 in Ax+By=C form. I have a whole work sheet of these could someone show me an example to solve this or direct me through this! Thank you~

asked by Alexis on March 18, 2018
89. ## precalculus

x/4x+1 < 5x/6 solve the inequality answer in interval notation and show work - thanks

asked by Sara on January 15, 2012
90. ## Precalculus(URGENT)

solve and graph the inequality using interval notation (x-4)/(x+8)

asked by Arielt -Help now fast due tommorow on April 1, 2010
91. ## math

solve each of the folowing equations by factoring and show your work x²+x²=13x²-36

asked by Derek on September 7, 2008
92. ## MAT222

-x+4y=4 x-4y=-4 the system has no solution the system has a unique solution: the system has infinitely many solutions they must satisfy the following equation: y=0 the answer is the system has many solutions i just don't know the answer to the equation y=?

asked by Kia on September 1, 2014
93. ## Algebra

Solve the following set of equations using elimination. -3x+5y=13 3x+2y=1 My answer: x=-0.5 y=1.25 Am I right?

asked by Anonymous on December 13, 2015
94. ## Algebra I

Solve the linear equation by elimination 10x-9y=46 -2x+3y=10

asked by Anonymous on March 18, 2014
95. ## Geometry

Can someone teach me how to solve this equation using substitution or elimination for {-3x+2y=23 {5x+2y=-17

asked by GummyBears18 on March 1, 2017
96. ## Math 116

Solve by elimination. 3x-6y=4 and 3x-6y=5. Type as an ordered pair.

asked by TracyAnn on November 15, 2009
97. ## math

Joseph used the problem-solving strategy Work Backward to solve the inequality 2n+5

asked by kimie on November 20, 2015
98. ## Math 8

A system of equations are shown below -y+2x=4 2x-y= -4 if i solve separately it has infinite solutions but if i solve together there are no solutions is it infinite or no solution?

asked by genie on April 7, 2017
99. ## Statistics

Statistics students were asked to go home and fill a 1-cup measure with raisin bran, tap the cup lightly on the counter three times to settle the contents, if necessary add more raisin bran to bring the contents exactly up to the 1-cup line, spread the

asked by Faye on January 16, 2010
100. ## Statistics

Statistics students were asked to go home and fill a 1-cup measure with raisin bran, tap the cup lightly on the counter three times to settle the contents, if necessary add more raisin bran to bring the contents exactly up to the 1-cup line, spread the

asked by Kat on January 16, 2010