# 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

92,096 questions, page 45
1. ## Chemistry

Say there is a diluted solution and we need to find the final concentration of it, using the equation M1V1 = M2V2. Does this method change, if the compound (concentration that we're trying to find), is in a solution that has already reacted with another

asked by Naomi on January 28, 2017
2. ## math

dentify the solution(s) of the system of equations, if any. 3x-2y=6 5x=5-25y

asked by robert on September 1, 2014
3. ## math

is each ordered pair a solution of the given system? write yes or no. y=6x+12 2x-y=4 (-4,-12)

asked by Anonymous on April 25, 2010
4. ## math

is each ordered pair a solution of the given system? write yes or no. y=6x+12 2x-y=4 (-4,-12)

asked by Anonymous on April 25, 2010
5. ## math

f(x)= -9x-10 What is the slope and the y-intercept I have no idea how to do this. Please help 6x+7y=39 x=50-6y what is the solution of the system

asked by janay1978 on June 8, 2009
6. ## math

find the solution of the system of equations 10x-5y=-20 and 7x-5y=-20

asked by aaron on August 10, 2011
7. ## product matrix

which product represents the solution to the system 3x+4y=-2 and 2x+5y=6 [3 2]*[-2 [4 5] [6] 1/7[3 2]*[-2] [4 5] [6] [5 -2]*[-2] [-4 3] [6] 1/7[5 -4]*[-2] [-2 3] [6] could someone explain

asked by Anonymous on August 29, 2008
8. ## Algebra 1

which graph represents the solution of the given system? y=3x+2 y=3x-1 please hep!!

asked by Sierra Elizabeth on January 4, 2016
9. ## Algebra 1 (PLEASE HURRY!!)

{3x+y=-9 {-3x+-2y=12 What is the y-value of the solution to this system of equations? A. -7 B. -3 C. -2 D. -1 I tried them all and I must have did something wrong because none of them worked. Help please!! Thanks.

asked by Izzy on March 4, 2015
10. ## Algebra 1

{3x+y=-9 {-3x+-2y=12 What is the y-value of the solution to this system of equations? A. -7 B. -3 C. -2 D. -1 I tried them all and I must have did something wrong because none of them worked. Help please!! Thanks.

asked by Izzy on March 4, 2015
11. ## URGENT ALGEBRA

CAN ANYONE PLEASE HELP ME I HAVE NO CLUE WAT TO DO AND I AM SO CONFUSED HELP ANYONE PLEASE 4x-5y=-19 2x+17=y what is the solution of the system?

asked by vera on September 10, 2009
12. ## Math

Determine if the ordered pair is a solution to the system. -5x - 7y= 4 y= 1/2 x - 1 a. (2,2) b. (2, -2)

asked by Neil on October 1, 2012
13. ## algebra

Identify the solution of the system of equations, if any. -4x-2y+=4 8y+16x-16

asked by bre on June 20, 2014
14. ## Algebra

Identify the solution(s) of the system of equations, if any. x+5y=5 2x-15y=0

asked by Tia on June 2, 2013
15. ## math

Q1. Determine the value of k for which the given system of equations has unique solution: a) 2x – 3y = 1 ; k x + 5y = 7 b) 4x – 5y = k ; 2x – 3 y = 12

asked by aayu on June 21, 2017
16. ## Algebra

Identify the solution(s) of the system of equations, if any. -6x - 4y = 24 8y = -12x - 48

asked by Tia on June 2, 2013
17. ## Algebra 1

What is the solution of the system? use substitution . 4x+2y=10, y=-3x+6 My answer chosies are a. (1,-3) b.(1,3) c.(3/10, 4/5) d.(-2,-2)

asked by Sierra Elizabeth on January 5, 2016
18. ## MATH

what is the solution of the system y=-3x 3x+2y=6 a. 2, 6 b. -1, 3 c. -2, 6 d. 1.5, -4.5 I have an answer but I seriously doubt it's wrong. Please help for this one? Thanks

asked by SkatingDJ on January 20, 2015
19. ## Algebra 1

In which quadrant does the solution ofthen system fall? y=x-1 y= -3x-5

asked by Steve on December 18, 2014
20. ## mat 116

identify the solution(s)of the system of equations, if any -2x-4y=1 and 12y=-6x-3

asked by csrla on March 2, 2014
21. ## Algebra

Identify the solution(s) of the system of equations 3x-2y=6 5x=5-25y

asked by Monica on June 4, 2013
22. ## math

Is the given ordered pair a solution of the system? (1,19) y is less then or equal to 7x-13 y>3x+6 thanks!!!

asked by ashley on March 24, 2009
23. ## algebra1a

Identify the solution(s) of the system of equations, if any. -2x - 6y = 4 24y = -8x - 16

asked by cccapwell on May 24, 2014
24. ## Math

Find the solution to the system of equations by substitution. 2x+5y=8 and 6x+y=10

asked by tim on January 28, 2016
25. ## math

Identify the solution(s) of the system of equations, if any. 3x-2y=6 5x=5-25y a) (28/13, 3/13) b) (-3/17, 32/17) c) (32/17, -3/17) d) (32/9, 7/3)

asked by monet on January 30, 2013
26. ## Calculus

Determine whether the given orderd pair is a solution of the system ( -2, 1) X/3

asked by Kelly on November 27, 2007
27. ## Math

asked by Janice on August 19, 2011
28. ## HELP !!! Algebra 2

15. What is the solution of the linear-quadratic system of equations? {y = x^2 + 5x - 3} {y - x = 2}

asked by Robert on November 16, 2012
29. ## Algebra

Identify the solution of the system of equations 3x-2y=6 5x=5-25y

asked by Korie on June 6, 2013
30. ## math

Can you help me answer this question? I have no idea how to do this... 1. Is (2,3) as solution of the system 3x +4y = 18 2x - y =1?

asked by Carla on October 26, 2009
31. ## Math

How do you find the solution to this system of equations? y=x+2 y=x(squared)

asked by Jillian on February 9, 2011
32. ## math

Identify the solution(s) of the system of equations, if any. x + 5y = 6 6x - 15y = 18

asked by Brenda on September 27, 2014
33. ## math-inequalities

graph solution set of system of inequalities x+y< 4 x-2y>6

asked by Anonymous on April 11, 2012
34. ## Math

x^+y^=36 y=x+2 Find exact solution for the system of equations

asked by Jillian on February 9, 2011
35. ## Algebra 2

Find the exact solution(s) of each system of equations? x^2+y^2=25 and 9y=4x^2 a.(4,3),(-4,3) b.(3,4),(3,-4) c.(4,3),(4,-3) d.(3,4),(-3,4) I had d but im not sure if that is right.

asked by Chely on November 13, 2007
36. ## Algebra1solutions help

Any help would be appreciated. Thank you. What are the solutions of the system? y = x2 + 3x – 4 y = 2x + 2 Options: (–3, 6) and (2, –4) (–3, –4) and (2, 6) (–3, –4) and (–2, –2) no solution

asked by Jennifer W. on May 29, 2013
37. ## MATH

Identify the solution(s) of the system of equations, if any. 3x-2y=6 5x=5-25y a) (28/13, 3/13) b) (-3/17, 32/17) c) (32/17, -3/17) d) (32/9, 7/3)

asked by Anonymous on January 31, 2013
38. ## Math

For this system, is the ordered pair a solution of both equations?How do you know? (5,1) y=-x+4 y=x-6

asked by Angie on March 30, 2009
39. ## math

15. What is the solution of the linear-quadratic system of equations? y=x^2+5x-3 y-x=2

asked by Jasmine on November 18, 2014
40. ## math

Which ordered pair is a solution to the system of equations? {4x+y=2 −2x+y=5 A. (1, -2) B. (- 1/2, 4) C. (2, -6) D. (7/2, -12)

asked by Jay on January 9, 2017
41. ## linear equations

What is the solution to the linear system –4x + 2y = –56 and –3x – 6y = 33?Question 3 options: (–9, 10) (–9, –10) (9, 10) (9, –10)

asked by alli on January 5, 2011
42. ## Algebra

What would the solution to this system of equations be? y = x - 50 y = 0.6x I got (138.8, 83.3), but that doesn't seem right at all.

asked by Kathy on January 27, 2014
43. ## algebra2

What is the value of x in the solution to the system y = 4x + 3 and 3x + 2y = -16? (Round to the nearest integer if necessary.)

asked by meghan on February 1, 2011
44. ## math

write a system of equations with the graph solution (2,1,0).

asked by anonymous on October 11, 2008
45. ## Math: algebra 1

6. In which quadrant does the solution of the system fall? y = x – 1 y = –3x – 5 A.) I B.) II C.) III D.) IV I think it is c.

asked by Timothy on November 27, 2012
46. ## Math

Hi! How to determine other linear systems that have the same solution as this system: 2x+5y=8 x-3y=-7 many thanks.

asked by Me on April 13, 2010
47. ## solving systems by elimination

What is the solution to the linear system –4x + 2y = –56 and –3x – 6y = 33?Question 3 options: (–9, 10) (–9, –10) (9, 10) (9, –10)

asked by alli on January 5, 2011
48. ## equations and inequalitys

You are saving moneyto buy a \$200 video game system.You earn \$20 a week for doing chores around the house.You get \$35 from a reliative on your birthday.How many whole weeks will it take for you to have enough money to buy the system? You are charged 7%

asked by anymous on August 27, 2012
49. ## 8th grade math asp help

Plz help me ASPWrite a sequence of transformations that maps quadrilateral ABCD onto quadrilateral A" B"C"D" in the picture below. like talk about it Find the area for the circle ( use 3.15 for pi). show your work. round to the nearest tenth. and the next

asked by supergirl on March 13, 2017
50. ## classroom management

Collecting, correcting, recording, and returning seatwork assignments (for the teacher) Completing assigned work on their own (for the student) Responses would include strategies for challenges so for teachers some examples would include providing more

asked by scooby on May 7, 2010
51. ## chem

you have 100 mL of a saturated solution of Pb(NO3)2 at 0 degrees celsius. If the solution is evaporated to dryness how many grams of Pb(NO3)2 do you expect to remain in the crucible? Im not sure how to do this because i don't have a number to work with

asked by keri on November 23, 2010
52. ## chemistry

A student determined the chloride content of a commercial salt by using the Mohr method. A 0.5324 -g sample of the salt was dissolved in distilled water and diluted to a final volume of 250. mL. A 25.-mL aliquot of the analyte solution was then titrated

asked by tara on April 4, 2011
53. ## CHEMISTRY

At what temperature do KCL and KNO3 have the same solubility If a saturated solution of KNO3 at 20.0 C is heated to 80.0 how much more could be dissolved? If a saturated solution of KCL at 90.0 C is colled to 30.0 C how much of the solid will precipitate?

asked by Mike on September 23, 2012
54. ## Chemistry Help? Thanks

At what temperature do KCL and KNO3 have the same solubility If a saturated solution of KNO3 at 20.0 C is heated to 80.0 how much more could be dissolved? If a saturated solution of KCL at 90.0 C is colled to 30.0 C how much of the solid will precipitate?

asked by Hannah on September 23, 2012
55. ## Algebra

Jesse Played two days of golf. On the second day, he got a score of six bellow par, or -6. His total score for the two days was o above par, or 0. Define a variable. Then write and solve an equation to find the score Jesse got on the first day. Show your

asked by Ella on November 8, 2017

I have to write a 700-1050 word paper that addresses the following:Develop a unique proposal that describes a new health care system. Consider the current U.S. health care system's strengths,weaknesses, and challenges. Be sure to include your answers to

asked by Susan H. on January 10, 2010
57. ## Math, plz help!

1. We multiplied: x to the exponent of 3 muliplied by x to the exponent of 4. a) Suppose the exponents 3 and 4 were different. Would the adding method still work? Explain. b) Suppose the base x was different. Would we get similar results? Explain. 2. We

asked by Zoie on October 11, 2006
58. ## math

Use an inequality to solve the problem. Be sure to show the inequality and all of your work. A car rental company has two rental rates. Rate 1 is \$63 per day plus \$0.18 per mile. Rate 2 is \$126 per day plus \$0.09 per mile. If you plan to rent for one week,

asked by Kay on December 6, 2010
59. ## physics (elastic collision)

A ball of mass .44 kg and speed of 4.5 m/s collides head-on with a .22 kg ball at rest. Assuming perfect elasticity, what is the speed and direction of each ball afterwards? I know that the momentum is conserved here and since I am solving fo two

asked by sean on February 1, 2007

Which cannot describe a system of linear equations? no solution exactly two solutions infinite solutions exactly one solution I thought it was A or D but someone else is telling me it is B...no I'm confused...I thought it was 2 or more solutions

asked by Deborah on November 23, 2012
61. ## fiances

Calculate the monthly finance charge for the credit card transaction. Assume that it takes 10 days for a payment to be received and recorded, and that the month is 30 days long. \$500 balance, 17%, \$50 payment previous balance method, adjusted balance

asked by Anonymous on November 18, 2013
62. ## Maths ( urgent help )

20 men can do a piece of work in 24 days. After working for 6 days, an additional number of men are taken to finish the work in 21 days from the beginning. Find the number of additional men . . . I tried using variation method but the answer didn't come

asked by mark on October 21, 2015
63. ## chemistry

suppose that after measuring the pH of 1.05 M HCl solution, three drops (0.20 mL) of the solution remained behind on the pH electrode. a) when this electrode is then dipped into 100 mL of pure distilled water, show by calculation that the pH of the water

asked by Nicollette on September 28, 2015
64. ## college-chemistry

2. A 0.1967 g sample of pure ascorbic acid is weighed out and dissolved in 50.0 mL of distilled water in an Erlenmeyer flask. One week later, when about one third of the water in the flask has evaporated, this solution is titrated against 0.01735 M KIO3

asked by john on November 15, 2009
65. ## chemistry

I keep getting wrong answers for this question. Determine the pH of an HF solution of each of the following concentrations. a) .280 M b) 5.3*10^-2 M c) 2.50*10^-2 M No Ka has been given. I haven't attempted b or c yet because I want to at least solve a

asked by maura on March 29, 2012
66. ## Chemistry

Beside the usual method of titrating with KMNO4, what is/are the alternative method/s to test for the presence/amount of oxalate in a compound?

asked by Alan on March 23, 2010
67. ## math

Provide two different ways to simplify each of the problems below. Please write all final answers using positive exponents. (-4m^-2 n^2)^3 * (2m^3 n)^-1 method 1: method 2: (X^-1/2 Y^3)^-2 -------------------- XY^1/3 * X^2 Y^-4

asked by lesly on February 20, 2019
68. ## CRIMINOLOGY

Identify 1 crime prevention method for property crime and 1 crime prevention method for enterprise crime. How successful is each prevention method? Illustrate your findings with statistics and anecdotal evidence.

69. ## Math

Hi! I know I am asking a lot since this is a huge question, but I was wondering if anyone could help or walk me through it. I totally understand if you do not want to help. But I am really confused and any help at all would be amazing. Thank you! You are

asked by Sasha on May 14, 2015
70. ## Math

Find the LCM for the given numbers by an appropriate method. 135, 56, and 150. Which method is the most appropriate?

asked by Anonymous on October 20, 2009
71. ## College Algebra

4. Translate the problem into a pair of linear equations in two vaiables. Solve the equations using either elimination or substitution. State your answer for the specified variable. Don runs a charity fruit sale, selling boxes of oranges for \$11 and boxes

asked by Ashley on January 29, 2010
72. ## testing and selection of dogs

Please check this for me thanks A dog with strong nerves or good nerve strength is one that A. doesn't show fear reactions to unexpected noises, sights, or events. B. doesn't have a high-strung, nervous disposition. C. is extremely nervous all the time and

asked by Anonymous on June 26, 2008
73. ## Chemistry

if antiseptic hydrogen peroxide is 3% H2O2 by mass, approximately how many moles of H2O2 are present in each gram of antiseptic solution? you can assume the solution has the same density as water. show your calculations.

asked by Ivy on December 2, 2011
74. ## Calculus

Show that u(x, t) = f(x−ct)+g(x+ct), where c is a constant and f and g have continuous second derivatives, is a solution of the wave equation in one dimension, ie (∂t)^2 u = c^2 ∂x^2 u. Note that this solution to the wave equation consists of two

asked by Margo on September 30, 2015
75. ## Chemistry

A 15.5 mL sample of 0.215 M KOH solution requires 21.2 mL of acetic acid in a titration experiment. Calculate the molarity of the acetic acid solution. Please show all steps, I don't understand this.

asked by Tina on May 23, 2011
76. ## calculus

A projectile is launched from a platform 20 feet high with an initial velocity of 72 feet per second, The height h of the projectile at t seconds after launch is given by h = –16t2 + 72t + 20 feet. (a) How many seconds after launch does the projectile

asked by Brian on March 10, 2012
77. ## Physics

i'm really lost here. please show me how to solve this A 0.10 kg piece of copper at an initial temperature of 94 degrees C is dropped into 0.20 kg of water contained in a 0.28 kg aluminum calorimeter. The water and calorimeter are initially at 15 degrees

asked by teamjakeward on February 15, 2009
78. ## CJA/363

Due Week 1 Day 5 (Due Saturday) Please post your response to the following discussion questions by clicking Reply. 1. What is an example of an effective presentation within the criminal justice system? How does an effective presentation relate to effective

asked by Florence on June 28, 2010
79. ## Java programming

without running on java, what is the final answer, please show your work. public class sample { public static void main(String[] args){ Sample x = new Sample(); int i = 10; int b = x.g(i); System.out.println(b + i); } public int f(int d){ int n = 0;

asked by anonymous on April 8, 2019

A handful of 65 coins consist of pennies, nickels and dimes. The number of nickels is 4 less than twice of pennies, and there are 13 more dimes than nickels. How many coins of each kind are there? Solve using Gauss-Jordan Elimination.

asked by Gray on January 19, 2016
81. ## chemistry Thank a lot help

100ml of h2s04 solution having molarity 1M and density 1.5g/ml is mixed with 400ml of water. Calculate final molarity of h2s04 solution if final density 1.25g/ml. 50ml of 20.8% bacl2 and 100ml of 9.8% h2s04 solution are mixed. Molarity of cl ions in the

asked by Ken on November 22, 2014
82. ## Corporate Fiance

Given an annual lease payment of \$438,020 find the rate of return earned by the lessor on a 3 year, \$1 million (present value) capital lease. Please don't show me how to solve this by using a financial calculator!! Please show me step by step how to do

asked by Cindy on May 9, 2013

I tutor 2nd Graders and they are stating to learn measurement in cups, gallons, Pints, Inches, Feet, Cm, . . . etc. I need a website that will show me how to better explain to them of how to solve the answers. Also, I don't know how to measure. I need a

asked by Qiayamah on February 2, 2014
84. ## Math B

The path of a rocket fired during a fireworks display is given by the equation s(t)=64t2,( t do the 2nd power) where t is the time in seconds and s in the height in feet. What is the maximum height in feet the rocket will reach? In how many seconds will

asked by Caroline on January 29, 2010
85. ## Algebra II

A student is asked to solve b2 + a2 = c2 for a and gives the following solution. Assume all variables represent positive Real Numbers. b2 + a2 = c2 pb2 + a2 = pc2 b + a = c a = c-b Explain the mistake(s) made by the student and provide the correct

asked by Kiara on July 9, 2014
86. ## chemistry

A) solve for the number of grams of Ca2+ ion in a solution prepared by adding 1 gram of calcium oxalate powder to 100 mL at pH 9. (B) explain what happens to the dissolved Ca2+ calculated before if you reduce the pH of this solution to 2.

asked by naresh on February 10, 2014
87. ## Trigonometry

Solve the equation, where 0° ≤ x < 360°. Round approximate solutions to the nearest tenth of a degree. (Enter your answers as a comma-separated list. If there is no solution, enter NO SOLUTION.) 3 sin x − 3 cos x = 1

asked by Karen on October 22, 2014
88. ## Algebra

11.) -4 = 2/5 x -- = my answer A.x = 10 B.x = -10 C.x = -1-- D.x = 1 12.) Which equation is an identity? A. 11 - (2v + 3) = -2v - 8 B. 5w + 8 - w = 6w - 2(w - 4)-- C. 7m - 2 = 8m + 4 - m D. 8y + 9 = 8y - 3 13.) Which equation has no solution? A. 8 - (5v +

asked by XD on October 16, 2018
89. ## math

My problem I have involves a method that requires using the quadratic equations that comes from India. Here the problem that I have to solve : x to the second power plus 12x minus 64 equals 0 I need someone to walk me through each step to arrived to the

asked by Dave on February 13, 2011
90. ## managerial economics

given π=1000x - 2x - xy + 180y - 4y. subject to profit constraints x + y =30. using solution method, what is the optimal profit under contraint

asked by yahaya on February 11, 2016
91. ## Mathematics

Hello, I am currently computing the "efficiency index" of an iterative method, given by this formula E = p^(1/m), where p is the order of the method and m is the number of functional evaluation of the iterative method. However, i do not know how to compute

asked by Gabriel on October 18, 2017
92. ## Physics

A mass m1 = 4.1 kg rests on a frictionless table and connected by a massless string to another mass m2 = 5.9 kg. A force of magnitude F = 32.0 N pulls m1 to the left a distance d = 0.83 m. 1) How much work is done by the force F on the two block system? 2)

asked by Drew on January 2, 2013
93. ## Chemistry

Hi, I'm really having trouble this this chemistry problem. I have the answers; however I don't have extensive knowledge about titrations and I'm struggling with working it out. If anyone could suggest how to work this out (or even where to start) that

asked by Stein on August 26, 2007
94. ## math/algebra

how do I solve system of linear inequalities by graphing x-y6.

asked by rex on September 16, 2007
95. ## Algebra

Solve the system.4x+3y=11 and3x -2y=4 x= -2 and y = -1 678/987

asked by Linda on June 3, 2007
96. ## finitie math

solve the system of equation for all variables using a matrix 2x+y+z=6 -3x-4y+2z=4 x=y-z=-2

asked by crystal on June 26, 2009
97. ## algebra 2

Solve the given system of linear inequalities by graphing: x+y>4 x-y

asked by saRa on November 4, 2009
98. ## math

Solve the following linear system of equations. 3x-2y+z=2 x-y+z=2 5x+10y-5Z=10

asked by Nick on December 12, 2010
99. ## algebra

solve the following system of equations? y=3xsquarerd+4x+1 y=xsquared-7x-4

asked by Anonymous on February 1, 2012
100. ## Math

Solve the system using substitution: x = y - 6 y = 6 - 3x Answer choices: (0,6) (6,0) (0,-6) (-6,0) (

asked by David on January 3, 2016