# 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 48
1. ## math

Solve the following system of equations. x+y=13 22x+36y=356

asked by helpme on November 30, 2008
2. ## Algebra.. please help

Please help. I have been trying to figure this problem out for an hour now. Solve the following system of equations. X + 8y = 5 (1) x=8-8y (2)

asked by Chloe on January 31, 2010
3. ## algebra 2

Solve each system of equations by graphing : 3x- y=0 and x-y=-2 put it in y=mx+b form first.

asked by drea on October 12, 2009
4. ## math

Ive got this equation system {x+y= 0 {x^2 + y^2 = sqrt(125) how do I solve it

asked by lalith on October 20, 2007
5. ## Algebra

What are 3 ways to solve system of linear equations in two variables?

asked by Anonymous on February 18, 2012
6. ## math

solve the system algebraically and graphically 32x^2+9y^2=324 3y^2-x^2=3

asked by cary on January 3, 2015
7. ## Math

Can someone please help me with my open needed question Solve the system by substitution -X-y-z= -8 -4+4y+5z =7 2X+2z= 4

asked by Amanda on January 17, 2017
8. ## Gaussian Elimination Method

Write the system of equations as an augmented matrix. Then solve for x and y. 5x-4y=12 -5x+3y=9

asked by jimmy on November 23, 2016
9. ## Math

Solve this system that is represented by the following matrix. [1 -2 -2| -3 0 5 3| 13 0 0 1| 1] Write answer in (x, y, z)

asked by Sally on April 8, 2015
10. ## Math-Algebra

Can I please have help as to how to solve a system using substitution? I have a quiz coming up and I want to ace it. :) Thank you.

asked by LadyPhantomhive on December 9, 2015
11. ## Gauss-Jordan elimination

Write the system of equations as an augmented matrix. Then solve for x and y. -3x+3y=-21 3x+2y=-4

asked by Anonymous on December 15, 2016
12. ## Algebra

Solve the following system using substitution: y = x + 2 y = 3x I don't understand this question.

asked by lizzie on August 15, 2011
13. ## algebra II , math

okay heres one of the ones i need help on can someone explain it to me thanks. Solve each system of equations. Let "z" be the parameter. x +2y +3z =11 2x -y + z = 2

asked by mathstudent05 on May 29, 2007
14. ## math

8x -5y =20 5y -8x=-20 x= -4 Solve the system of equations by graphing. Check this problem for me.

asked by Tony on April 5, 2009
15. ## math

solve the system of equations for all variables using a matrix x-y-z=1 2x+3y+z=10 x+y-2z=0 can not have fraction

asked by crystal on June 27, 2009
16. ## Math

Solve the following system of equations. x1 + 2x2 + 6x3 = 8 x1 + x2 + 3x3 = 4

asked by Anonymous on September 13, 2017
17. ## augmented matrix

Write the system of equations as an augmented matrix. Then solve for x and y. 3x+y=-11 -9x-3y=33

asked by Anonymous on December 15, 2016
18. ## maths

Use crammers rule to solve the system of linear equations 3x+2y-z = 0 2x-y+z = 1 x-y+2y= -1

asked by CHRYSTABELLE on July 28, 2011
19. ## Algebra 2

solve the system of equation by graphing ( find out where they meet. x+3y=4 2x-y=8

asked by Big Al on October 11, 2007
20. ## precalculus

solve the inequality in the complex number system. x^4+x^3+4x^2+10x-60=0

asked by Deandra on November 11, 2011
21. ## algebra

solve the system of linear equations by graphing y=3/5x y=-1/5x-4 I need helping it.

asked by Keonn'a on October 14, 2018
22. ## precalculus

solve the equation in the complex number system x^4+x^3+4x^2+10x-60=0

asked by tina on November 12, 2011
23. ## precalculus

solve the equation in the complex number system x^4+x^3+4x^2+10x-60=0

asked by tina on November 12, 2011
24. ## Algebra 2

1. How many solutions does this system of equations have? y=-2x+6 y=3(x+4) 2. What is the square root of 45? 3. solve 2(x-4)^2=14

asked by Neil on January 17, 2008
25. ## Algebra HELP

how to solve this equation in the real number system: 2x^(3) + 3x^(2) + 2x + 3 = 0 steps please

asked by Amy on November 14, 2010
26. ## math

find the values ofx and y that solve the following system of equations -3x- 8y=19 4x+9y=-22

asked by brille on November 29, 2010
27. ## algebra 1

graph the system of linear inequalities x+y-2 please solve asap

asked by shay on January 30, 2008
28. ## Math

System of equation. Find the value of X Y=3x+5 2y=4x+24 Please help with steps to solve this problem. Thank for your help.

asked by Sara on July 28, 2019
29. ## algebra ll

To solve the system of equations, which expression could be substituted for x into the first equation? 3x-5y=14 x+4y=10 a)10-4y b)4y+10 c)(1/4)x+(5/2) d)(-1/4)x+(5/2)

asked by kara on August 11, 2008
30. ## MATH PLZ

you accept a new job with a starting salary of \$34,800. You are told you will receive an annual raise of least \$1,500. What is the maximum number of years you must work before your annual salary will be 45,000? (** SHOW WORK SO I CAN KNOW HOW YOU GOT THE

asked by gia on May 27, 2014
31. ## Calculus 2

Calculus work problem. John bought the following corner lot. Two sides are bounded by 2 roads the back is bounded by a stream that follows the curve y = -x^3 + 8. He wants to build a house in the center of the lot. Where will that be? Please show all work

asked by Laura on September 27, 2012
32. ## algebra

Note: Remember to show all of the steps that you use to solve the problem. You have \$59.95 in your wallet and want to buy some new CDs. If the CDs are \$11.99 each, what number of CDs, x, can you buy? Write and solve an inequality. (2 points) *Step 1:

asked by unknown on January 11, 2016
33. ## Chemistry

Consider the hypothetical reaction: A + B + heat ⇌ C + D (All species are in the gaseous phase) What will happen to the concentration of A, B, C, and D under each of the following conditions? a) A catalyst is added to the system, which is at equilibrium

asked by Ceamus Angelina on July 6, 2018
34. ## PHYSICS

A 60.8-kg skateboarder starts out with a speed of 1.84 m/s. He does 90.8 J of work on himself by pushing with his feet against the ground. In addition, friction does -278 J of work on him. In both cases, the forces doing the work are non-conservative. The

asked by KS on April 22, 2015
35. ## Chemistry

The values of Ksp for silver bromide, AgBr is 7.7x10^-13, and silver chloride, AgCl is 1.6x10^-10. A solution containing a mixture of 2.0x10^-2 M Br^- and 2.0x10^-2 M Cl^- is a candidate for separation using selective precipitation. Solid AgNO3 is added

asked by Sam on July 27, 2010
36. ## chemistry

Will this solution form a buffer? 100 mL of .10 M NH3; 100 mL of .15 M NH4Cl Work: NH3= .01 moles NH4Cl= .015 moles .... not sure what else to do. I think we use the H-H equation, but I don't know how to find pKa, or even what pKa is. This should give the

asked by Vanessa on March 19, 2010
37. ## Math

Methods: Factoring, completing the square, quadratic formula. for these equations: 1. x^2 - x = 6 2. -2x^2 + 5x - 3 = 0 3. 3x^2 + x + 1 = 0 4. 2x(x - 5) = -12 is there any reason to chose one method over the other to solve the equations if so which one for

asked by anonymous on September 2, 2018
38. ## Algebra 2

I had to solve this quadratic equation using the complete the square method. Did I do it correctly? The problem is 3x^2+18x+10= 0 (3x^2+18x+10)/3= 0/3 = x^2+6x+(10/3)=0 x^2+6x+(10/3)-(10/3)=0-(10/3) =x^2+6x= (-10/3( x^2+6x +(6/2)^2= -10/3+(6/2)^2

asked by Keith on October 18, 2015
39. ## geometry

if you know the area of a parrallelogram is 45.0 square feet and the base is 10.o feet, how can you find the height? Explain your method and then solve the question.

asked by Danny Boo hoo on April 29, 2012
40. ## math 10

by completing the square method solve the equation. x^2-2x-1 can u factor it? when i did it it couldn't be factored. i also don't know why it is not factorable because its a perfect square right? please help me

asked by shajevan on October 31, 2009
41. ## math

In need of assistance please take two integers between -12 and +12 write two equations that have the two intergers selected as solutions. solve the equations by addition/subtraction method.

asked by yorkie16 on April 16, 2009
42. ## algebra

would someone write out the whole process of the following question, including solving for y so that i can see what i am doing wrong. Thank you Solve by the substitution method. write as an ordered pair. 8x-3y=-94 2x+22=y

asked by babs on July 23, 2011
43. ## Math- Calculus

Use Newtonâ€™s Method with initial approximation x1 = 2 to solve the equation x5 +x= 6 . Go to x3, and tell me how good you think the approximation is. Round all answers to 3 decimal places.

asked by Soojung on November 10, 2008
44. ## Sameul

by completing the square method solve the equation. x^2-2x-1 can u factor it? when i did it it couldn't be factored. i also don't know why it is not factorable because its a perfect square right? please help me

asked by Math 10 on October 31, 2009
45. ## Math....Please help I have a deadline for tonight!

Use the geometric sequence of numbers 1, 1/3, 1/9 , 1/27… to find the following: b) Using the formula for the sum of the first n terms of a geometric series, what is the sum of the first 10 terms? Carry all calculations to 6 decimals on all assignments.

asked by Vianna on November 4, 2006
46. ## transportation and cargo security

Research the various U.S. transportation systems and identify the appropriate one to use for your case study. Research the selected system carefully and prepare a brief summary. The summary should include the following: An introduction to the system.

asked by chris on April 15, 2012
47. ## Computer Question

This is not a homework question, but does anyone know how I could fix this: my cousin has Norton Internet Security and she has over 200 days of subscription remaining. But the thing is that none of the scans work. Also whenever she clicks Norton Internet

asked by Amy~ on May 31, 2010
48. ## Medical billing and coding

Which of the following reimbursement methodologies determines payment before services are received? A.prospective payment system b. retrospective payment system c. fee-for-service payment system d. capitation system

asked by TAC on April 1, 2009
49. ## CHEMISTRY HELP PLEASE!!!

The cell potential of the following electrochemical cell depends on the pH of the solution in the anode half-cell: Pt(s)|H2(g,1atm)|H+(aq,?M)||Cu^2+(aq,1.0M)|Cu(s) what is the pH of the solution if Ecell is 375 mV? I first got .65 as my pH, but it said

asked by clara on March 30, 2013
50. ## Physics

2. Saturn has a radius of about 9.0 earth radii, and a mass 95 times the Earth’s mass. Estimate the gravitational field on the surface of Saturn compared to that on the Earth. Show your work. Answer: g= GM/r² G= 6.67 * 10^-11 Nm²/kg² ME= 5.98 * 10^24

asked by Danielle on December 10, 2015
51. ## aviation

How does the modern autopilot system work for commercial airliners?

asked by AL 92 on August 4, 2010
52. ## health

What are the key anatomical parts of the cardiovascular system and how does it work.

asked by Kim on May 16, 2010
53. ## Chemistry

A system which undergoes an adiabatic change (i.e., q = 0) and has work done on it by the surroundings has a. w < 0, ΔU = 0 b. w < 0, ΔU < 0 c. w > 0, ΔU < 0 d. w > 0, ΔU > 0 e. w < 0, ΔU > 0

asked by Chris on April 28, 2014
54. ## calculus

Find the volume generated by revolving the region bounded by x=1, y= e^x/2, y= e^x about the x-axis? Using the washer method or would it be the shell method. I'm having trouble finding that the boundaries would be? Thank you.

asked by Anonymous on April 9, 2019
55. ## government

Which of the following polling methods relies on representative respondents? A. quota method*** B. random selection C. voluntary method D. robo-call sampling

asked by dbh on June 3, 2019
56. ## function

consider the function g(x)=x^3+5x^2-4x+4.determine: 1)g(37) 2)the value of x between zero and a hundred such that g(x)=145456 how do i do this? 1) put in 37 for x, and compute. 2) put in 145456 in for g(x), and solve for x. for the first one, just

asked by Emma on May 25, 2007
57. ## English - Native speakers

Can you please correct these sentences(concerning grammar) We should reduce a politician salary. I hate to eat sweets because it is not good for my teeth. I am going to ban her computer games. I work only a few hours for a month. My salary is going to

asked by Mark on April 25, 2011
58. ## Physics

A mass m1 = 3.3 kg rests on a frictionless table and connected by a massless string over a massless pulley to another mass m2 = 4.4 kg which hangs freely from the string. When released, the hanging mass falls a distance d = 0.87 m. 1) How much work is done

asked by David on September 30, 2012
59. ## College Math II

Solve the problem. If a manufacturer charges q dollars each for footballs, then he can sell 3000 – 150q footballs per week. Find the polynomial R(q) that represents the revenue for one week. Find the weekly revenue if the price is \$8 for each football. I

asked by Lori on November 21, 2009
60. ## math

how would you convert the repating nonterminating decimal to a fraction? explain the process as you solve the problem/0.1515... remember to show all of the steps that you use to solve the problem how would you convince a fellow student that the number 0.57

asked by kthy on October 25, 2014
61. ## college alg

find the equation of a line that is parallel to the line x=6 and contains the point (-8,9) please show work, it also wants me to show the answer in an equation

asked by alli on September 4, 2012
62. ## Geography/Science

Science is the literature of truth? in other words, Science is knowledge socially produced... I need some opinions, do you agree or disagree, why? I choose disagree because even science has and will sometimes come to wrong conclusions. Thank you for using

asked by Oz on April 9, 2007
63. ## Math help

Can someone please help me? I've been stuck on this for two days Leo is planning a trip with his friends by renting a bus. He found that the bus costs \$75.50 for 5 people. If he is planning to go with 13 people and himself, how much money will Leo pay for

asked by Isabelle on February 7, 2018
64. ## math

jasper owns a small retail store as a sole proprietor. the business records show that the cost of the stores inventory items has been steadily increasing. the cost of the end of the year inventory is 200,000 and the cost of the beginning of the year

asked by keri on November 11, 2013
65. ## math

jasper owns a small retail store as a sole proprietor. the business records show that the cost of the stores inventory items has been steadily increasing. the cost of the end of the year inventory is 200,000 and the cost of the beginning of the year

asked by keri on November 12, 2013
66. ## math help please

jasper owns a small retail store as a sole proprietor. the business records show that the cost of the stores inventory items has been steadily increasing. the cost of the end of the year inventory is 200,000 and the cost of the beginning of the year

asked by keri on November 12, 2013
67. ## math help please

jasper owns a small retail store as a sole proprietor. the business records show that the cost of the stores inventory items has been steadily increasing. the cost of the end of the year inventory is 200,000 and the cost of the beginning of the year

asked by keri on November 13, 2013
68. ## Pre-Calculus

Solve the equation 2x + 5y - 3z = -1. Write the general solution as a matrix equation. [x] [ ]  [y]= [ ] X [s] [z] [ ] [t] I'm supposed to fill in that blank in the middle, but I don't understand how to solve this if I'm only given one equation. please

asked by Ann on December 6, 2013
69. ## Maths

The party of kejriwal walks from gwalior to Bhuvneshwar. They first walk straight for 150km and then turn 45 ddegree towards Varansi and again go straight for 120km how for have they travelled from the initial place. Please show the method.

asked by Sanjay on March 23, 2017
70. ## Science

18. What is the difference between nearsightedness and farsightedness? ((Is that just for regular sight, or is there another term I'm not recognizing?)) ((LINKS FOR ALL THE QUESTIONS BELOW, PLEASE!)) 19. Describe how an electromagnet works and give an

asked by M&M's on May 2, 2016
71. ## ENGLISH

I am writing an essay in which I have to analyze and interpret a television show or movie. This work must be geared toward my assigned topic (Law) I want to use either the TV show HOUSE, or the movies Philadelphia, a time to kill, or remember the titans.

asked by JOEY on October 9, 2008
72. ## 7th grade math

1. Price of the dolls: \$12.99 A. Price of the dolls with a 5% sales tax. Show all of your work! [4 points] B. A discount of 20% is applied to the doll’s original price of \$12.99. What is the price of the dolls with the discount applied to \$12.99 + 5%

asked by Delilah on November 27, 2012
73. ## ap algebra

Please help me with this problem. I don't know what to do. Use the graph or table to determine a solution of the equation. Use synthetic division to verify that this number is a solution of the equation. Then solve the polynomial equation. x3 + 6x2 + 11x +

asked by Kate on October 15, 2007
74. ## Chemistry

A teacher prepares a saturated NaCli solution at 55 Degree C. What is the % by mass 9m/m0 of this solution? what is the concentration of this solution expressed in ppm? What is the molality of this solution? If the density of the solution is 1.07 g/ml,

asked by nancy on March 21, 2007
75. ## Math

Simplify each expression and state any non-permissible values. (4 marks - show your work) 4x-1/x^2+7x+12 divided by 2x-1/x^2+x-12 My work on simplifying the expressions: 4x-1/(x+3)(x+4)divided by 2x-1/(x+4)(x-3) If I've gone wrong please help me understand

asked by Alex on January 10, 2015
76. ## algebra

Is the following pair of lines paralle or perpendicular? Prove the answer. 2y-x=2 y+2x=4 I think that the lines are perpendicular but do not know how to work the problem. x=6/5 y=8/5 Can some one show me how to work this equation?

asked by jackie on September 11, 2010
77. ## Chem=continued

I'm currently working on a lab in which I have to make the solution boil at 245 degrees F. The solution will be a mix of ethylene glycol and I have to caluculate the volumes of water and solute needed to make the solution. here's my work so far. X= mL

asked by Jonathan on February 11, 2008
78. ## Chemistry

The phrase “the heat absorbed or released by a system undergoing a physical or chemical change at constant pressure” is a. the change in enthalpy of the system. b. the change in internal energy of the system. c. the definition of a state function. d.

asked by Jessica on July 2, 2013
79. ## math

An expression is shown below: f(x) = 2x2 − 5x + 3 Part A: What are the x-intercepts of the graph of f(x)? Show your work. (2 points) Part B: Is the vertex of the graph of f(x) going to be a maximum or minimum? What are the coordinates of the vertex?

asked by help on May 23, 2018
80. ## Chemistry

Solution x has a pH of 4.35. Solution y has 10- times high [OH-] compared to solution x. Solution z has a pH 4.0 units higher than that of solution x. calculate the ration of [H3O+] between solutions x&y and between x&z. What is the pH of solutions y and

asked by mary on March 19, 2013
81. ## Calculus

Find the arc length of the curve from t = 0 to t = 1 whose derivatives in parametric form are dx/dt=2-cos(t) and dy/dt=ln(t^2). Type your answer in the space below and give 2 decimal places My work: 2-cost(t) = sin(t) = sin^2(t) ln(t^2)= 2/t= 4/t^2

asked by Alice on April 8, 2019
82. ## Math- Reiny can you help me with this question

I know how to do the work, but the way the question is worded I am not sure the answer. The math works comes out to -2 which is b but if you want the number less than -2 the answer is c. Which are they asking for . This is my work. Which is the value is in

asked by b6 on January 4, 2013
83. ## Human Resources

Which of the following is a correct statement about dejobbing? A. Dejobbing involves viewing organizations as a field of work to be done .B. Dejobbing involves the downsizing or elimination of jobs .C. Dejobbing involves emphasizing on detailed job

asked by Paul P on November 13, 2015
84. ## math

Break-Even Analysis and Cost Analysis: As a first-time homeowner, there are going to many decisions that you need to make, such as whom to hire for the upkeep of your lawn. You have just received advertisements from 2 companies in your area: Greener Lawns

asked by schyla on May 9, 2011
85. ## math 140

Break-Even Analysis and Cost Analysis: As a first-time homeowner, there are going to many decisions that you need to make, such as whom to hire for the upkeep of your lawn. You have just received advertisements from 2 companies in your area: Greener Lawns

asked by sharon ashford on May 2, 2011
86. ## math

please show me how to solve this (2x - 5y) power of 2 i am having a problem with the way to step by step please solve this

asked by kenny on April 23, 2013
87. ## Algebra 2

V=df-di/tf-tf; solve for tf Please show step by step procedure so I can understand how to solve this. Many thanks.

asked by Anthony on September 3, 2013
88. ## Math

I do not want the answers; I want to know how to calculate the answers. Explanations and examples on how to do this is what I am looking for. Part 1: Initial Plan Budget You are a manager with budget authority for a new IT project that is being developed

asked by Bobbe on July 18, 2019
89. ## Algebra

A garden is going to be built in the city park. the garden height is 5m. and the width is 7.5 m. a. A short fence will be built around the perimeter of the garden region. Find the number of meters of fencing required. Round your answer to the nearest tenth

asked by Anonymous on June 13, 2014
90. ## Physics

a system of 1525 particles, each of which is either an electron or proton, has a net charge of -5.456*10^-17 C. A) How many electrons are in this system? B) What is the mass of this system?

asked by Anonymous on January 10, 2011
91. ## Science

What roles do these systems play in supporting cellular respiration? -digestive system -repiritory system -circulatory system

asked by Amir on December 17, 2008
92. ## Chemistry

85.0 mL of 1.50 mol/L ammonium chloride solution is added to 250 mL of water. Calculate the molar concentration of the final solution. Using the formula C(Concentration)=n(moles)/v(Volume measured in litres.) How am I supposed to solve this question given

asked by AlphaPrimes on March 29, 2016
93. ## Physics

An odometer in a car has a reading of 50 km at the beginning of a trip and a reading of 125 km half an hour later. What is the average speed of the car? Textbook ans: 150km/h Please can someone help me solve this problem? I don't know how to solve it. Can

asked by John on March 26, 2010
94. ## Calculus

Solve lim sin2x using any method. ×>0 ----- 5x I am unaware of what my first step is supposed to be, I know that if I plug in 0 to x, I will receive an answer of 0/0, and that makes my answer indeterminate. So what happens after that?

asked by Leslie on August 21, 2016
95. ## math

Solve by the method of choice A book club offers a choice of 8 books from a list of 40. in how many ways can a member make a selection?

asked by marie on August 23, 2011
96. ## MATH

How can I find the vertex, axis of symmetry? I know to find x and y intercepts i use the quadratic formula. I am given the parabola y=x^2+6x+5 I do not want the answer.. Just please explain to me how to solve for it. what method do I use???

asked by tc on January 26, 2012
97. ## physics

Using the simultaneous or matrix method to solve the following: (1) 450alpha 4500B(beta).......eqn(2) (2) 2000.7alpha 889511.22B...eqn(3)?

asked by POPPY on April 3, 2019
98. ## business

Which economic system is the best solution to handling a crisis of epic proportion?

asked by amy on April 28, 2010
99. ## Business

Which economic system is the best solution to handling a crisis of epic proportion?

asked by Jay on June 16, 2010
100. ## Busniess

what economic system iss the best solution in handling a crisis proportion?

asked by Tali on January 12, 2011