# 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 47
1. ## chemistry

Using your 0.0100M oxalate solution and only the equipment and supplies listed below, describe how to prepare a 0.00025M solution of oxalate. Note, you are not allowed to add volumes with pipettes. (example, if you want 20mLs, you can not use a 10mL + 10mL

asked by Annie on June 17, 2013
2. ## Chemistry

Using your 0.0100M oxalate solution and only the equipment and supplies listed below, describe how to prepare a 0.00025M solution of oxalate. Note, you are not allowed to add volumes with pipettes. (example, if you want 20mLs, you can not use a 10mL + 10mL

asked by Jessica on June 17, 2013
3. ## Improving your writing Revised

For the past three months there seems to be an ever-growing problem at our company of DMD Medical Supplies: The quality of work has been poor; the morale of various employees has been brought down; and the workflow has been uneven amongst both teams and

asked by Shawna on February 2, 2012
4. ## statistics/mean and standard deviation

find the mean and standard deviation in the following probability distribution x 1 2 3 p(x) 0.2 0.6 0.2 *i think that the mean is 2 but am lost after that when it comes to the standard deviation. please show work and calculations. the more i work with

5. ## Physics

The work required to bend a steel beam with a spring constant of 10^6 n/m is 5 j. If it is treated like a perfect spring, what is the displacement of the beam? A. 3.2 mm b. .03 m C. 2.5m D. 0.026 m e. 0 Pls show work thank u!

asked by john on December 3, 2012
6. ## Physics

Calculate the force of gravity on a spacecraft 19200 km (3 earth radii) above the Earth's surface if its mass is 1600 kg. I've done all the work but I can't seem to get the right answer, please show work and answer.

asked by Kyle on October 28, 2010

For #1-4, write an equation of the line that passes through each pair of points. Show all of your work to receive full credits. 1.) (9, -2) and (4, 3) Answer: 9 = -1x + -2 2.) (3, 5) and (2, -2) Answer: 3 = 7x + 5 3.) (4, 3) and (2, 0) Answer: 4 = 2/3x + 3

asked by Sharpshooter on September 25, 2017
8. ## algebra2

10 points) Score 2. Allegra has a cell-phone plan that charges \$65 per month and \$0.10 for every minute that she uses the phone beyond what her plan allows. One month, she was billed \$73.40. a. Define a variable for the unknown. b. Write an equation to

asked by myira smith on December 9, 2014
9. ## Physical Chemistry

A saturated solution of Na2SO4, with excess of the solid, is present at equilibrium with its vapor in a closed vessel. (a) How many phases and components are present? (b) What is the number of degrees of freedom o the system? Identify the independent

asked by Jessica on October 3, 2015
10. ## Math

Simplify the expressions in each pair. (2 marks each) (Show your work) (x^2-2x)/(x+1)x (x^2-1)/(x^2+x-6) My work on simplifying the expressions x(x-2)/x+1 x (x+1)(x-1)/(x+3)(x+2) If I've gone wrong please help me understand where I went wrong and help me

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

Twins Diana, and Riana are each 6 years older than their younger brother Kyle. Together, their three ages total 21 years. How old is kyle? Please show your work to help me understand how to work the problem

asked by Theresa on January 6, 2009
12. ## Math

Simplify the expressions in each pair. (2 marks each) (Show your work) (x^2-2x)/(x+1)x (x^2-1)/(x^2+x-6) My work on simplifying the expressions x(x-2)/x+1 x (x+1)(x-1)/(x+3)(x+2) If I've gone wrong please help me understand where I went wrong and help me

asked by Alex on January 10, 2015

I am having trouble, I have a question I think I got the answer because I kept multiplying and dividing, but I have to show my work but when i try, my answer is not the same. The question is A traffic light at one intersection changes every 28 seconds and

asked by Hailey on September 30, 2010
14. ## science

Listed below are six mixtures. Identify physical properties of the components that allow you to separate them. Then, explain the method you would use to separate the components. Mixture 1: Salt dissolved in water Physical Properties: Density Method of

asked by Hope on October 24, 2011
15. ## Math

1. Is the equation true, false, or open? 5x+2=6x+11 a. Open; there is a variable b. True; the expressions are the same for all values of the variables c. False; the expressions are never the same 2. Which equation is an identity? a. 8-(5x+2)=-5x-6 b.

asked by Shaghayegh on October 12, 2015
16. ## college chemistry

A) In some regions of the southwest United States, the water is very hard. For example, in Las Cruces, New Mexico, the tap water contains about 560 ug of dissolved solids per milliliter. Reverse osmosis units are marketed in this area of soften water. A

asked by Stephanie on April 28, 2010
17. ## math

Can someone help me figure this out. The difference of two numbers is 80. The second is 8 less than 5 times the first. What are the two numbers? first write an equation 5x-8=y and then solve it Tiff gave you part of the solution. 5x-8=y However, there is

asked by jessica on May 7, 2007
18. ## Augmented Matrix

Perform row operations on the augmented matrix as far as necessary to determine whether the system is independent, dependent, or inconsistent. DO ALL WORK BY HAND. x + 2y + 4z = 6 y + z = 1 x + 3y + 5z =10 If one subtracts the first equation from the last

asked by GetYourLeash on July 22, 2005

The Candle Shop -Annual Inventory of candles. _______-________________________________ Jan 1 Beg Inventory 5,000 units @\$0.89 ---------------------------------------- Feb 15 Purchase 10,000 units @ \$0.69 ________________________________________ April

asked by Anonymous on November 9, 2007
20. ## algebra

Translate the problem into a pair of linear equations in two variables. Solve the equations using either elimination or substitution. State your answer for both variables. In a basketball game, Will scored 26 points, consisting only of three-point shots

asked by star on August 26, 2010
21. ## Math

How would I find the solution set for a system of linear inequalities? For example, x-3y

asked by HEL on July 27, 2014
22. ## Algebra II

Use a matrix to find the solution to the system of equations. {-8x - 8y = -16 {6x - 9y = -108 A.(-6,8) B.(6,8) C.(8,-6) D.(6,-8)

23. ## Algebra

Graph the system below and write its solution. =+3xy−6 =y−−12x1

asked by Anonymous on October 9, 2014
24. ## computer science

. Investigate the values of  and  such that the system of equations x + y + z = 6 x + 2y + 3z = 10 x + 2y + z = , may have (i) Unique solution

asked by sonia on November 16, 2010
25. ## Math help!

What is the value of y in the solution set of the system of linear equations shown below? y=-x+12 4x-2y=36 A. 10 B. 8 C. 6 D. 2*** I think its D but Im not sure, help?

26. ## ALGEBRA HELP

Which of the following points lie in the solution set to the following system of inequalities? y < −3x + 3 y < x + 2 (1, −5) (1, 5) (5, 1) (−1, 5)

asked by Oscar on January 19, 2016
27. ## MATH

Which of the following ordered pairs represents the solution to the system of equations below? -3x+2y=2 7x-3y=7 [8.EE.8.b] A. (2, 4) B. (4, 7) C. (7, 14) D. (8, 13)

asked by keke on May 30, 2014
28. ## math

the system of linear equations below has a unique solution for all but one value of a: 6 x−12 y=−6 58 x+a y=−58 What is this exceptional value for a?

asked by Tiff on October 26, 2010
29. ## Math

Solving systems of equations with three variables? What is the solution to the system? 1] x+y+z=-3 2] 3y-z=4 3] 2x-y-2z=-5

asked by Kori on May 30, 2011
30. ## college algebra

Compute x +y, given the linear system with T # 1 and with the ordered pair (x,y) as solution x + 2y=3 Tx + ( T+1)y = T + 2

asked by Mark on December 15, 2010
31. ## Algebra

Which graph represents the solution to the given system? y=-x+5 y=1/4x+10 Im rlly behind and need some help on the test .-.

asked by Anon on January 30, 2019
32. ## math

a + bc = -1 b + ac = -1 c + ab = -1 Which of these values of 'a' is one solution for this system of equations? A) -2 B) -1 C) 0 D) 2 Please also explain how you got the answer, thanks.

asked by anonymous on June 16, 2017
33. ## Differential equation- Math

Find the general solution of the following system of equation? Please help, i don't know what to do... dx/dt = 3x +2y +2z dy/dt = -5x - 4y - 2z dz/dt = 5x + 5y +3z.

asked by katie on March 17, 2011
34. ## Math help mrs sue

When solving A system by graphing how can you tell if the solution is the equation of the line

asked by Taylor on February 16, 2014
35. ## Algebra

Find the solution to the system of equations by using either graphing or substitution. y+x=3 y-2x=18 (-4.5,7.5) (-5,8) (-6,9) (-7.5,10.5)

asked by katy on May 16, 2019
36. ## Algebra

2. What is the value of x in the solution to the system of equations below? 15x – 12y = 13 30x + 9y = 4

asked by Astral Tellurian on February 4, 2016
37. ## math

What is the solution of the system of equations? y=5/6x+1 −x+y=2 Enter your answer in the boxes.

asked by Jay on February 11, 2017
38. ## math

(19) Does the following system of equations have a solution? If it does, find one; if not, explain why not. √ x + √ y = 1 r 4x 9 − r 25y 64 = 1

asked by sukh on February 12, 2017
39. ## Algebra

Determine if the ordered pair ( -5,2) is a solution to the following system of equations. x + 3y = 1 y = 3x + 17

asked by slomo on January 7, 2015
40. ## algebra1B

The Directions Say "What Is The Solution Of The System Of Linear Equations?" The Question Is: x-y=2 x+y=-3

asked by Kylie on February 8, 2010
41. ## Math

When solving a system algebrically how can you tell if solution is the equation of the line

asked by Taylor on February 17, 2014
42. ## Algebra

I have to identify the system of equations, if any for: -2x-4=1, 12=-6x-3 no solution? infinitely many solutions? (0,-1)? or (-1,0)?

asked by Sandra on May 4, 2014
43. ## algebra

Which of the graphs below represent the graphical solution to the following system of equations? 4x + y = 5 3x – 7y = 27

asked by Anonymous on September 18, 2011
44. ## algebra

what is the solution of the following linear system? 5x - 2y = 15 5/3x - y = 5 a)(-2,1) b) none c)(3,0) d) inifinite number if solutions

asked by candy on April 29, 2010
45. ## math

compute x+y, given the linear system with T is not = to 1 and with the ordered pair (x,y) as solution: x+2y=3 and Tx+(T+1)y=T+2

asked by Anonymous on December 12, 2010
46. ## Math

Find the solution to the system of equations by substitution. 2x+5y=8 and 6x+y=10 Would the answer be (1.5,1)?

asked by Greg on January 29, 2016
47. ## algebra

Graph the solution set for the system of linear inequalities y=2x-6

asked by Libuse on February 29, 2012
48. ## algebra

what is the solution of the following system of equations? 2y - x = 8 y = 2x + 1 a) (1,2) b) (5,2) c) (2,1) d) (2,5) and the answer i picked is c thank you, poo :)

asked by poo on April 29, 2010
49. ## math

-4x-4y=12 16y=-16x-48 identify the solution of the system or equatuions

asked by sabrina on April 19, 2014
50. ## Algebra!

Which ordered pair is a solution to the system y(line under)-x-1? A. (0,-2) B. (1,2) C. (-5,0) D. (0,-5) I'm thinking it's B.. but i need some help with this.

asked by Allyson on June 9, 2011
51. ## Math

When solving A system by graphing how can you tell if the solution is the equation of the line

asked by Taylor on February 16, 2014
52. ## computers

i have a java problem. i'm trying to write the hunt the wumpus game with simple conditions: (check-marked the ones i already accomplished) [x]the pits will be placed randomly [x] the wumpus is placed in the maze randomly (not sure if i did that one

asked by yuki on November 29, 2007
53. ## criminal justice

Read Chapter Four in The Courts in Our Criminal System and then write a 200 -300 word response comparing your home state court system and the federal court system. In your response, describe in detail how the court system in your home state structured, how

asked by Anonymous on July 16, 2010
54. ## chemistry

The enzyme Y catalyzes the elementary reaction AB-->A + B An enzyme concentration of 1.0M Y can convert a maximum of 0.5M AB to the products A and B per second. What will happen when each of the following is added to a solution that contains 1.0M Y and

asked by tomi on March 22, 2009
55. ## Algebra

Write the equation of the line L satisfying the given geometric conditions. L has y-intercept (0,2) and is perpendicular to the line with equation 2x-3y=6 Show work I will be happy to critique your work on this. 3x+2y=4?

asked by Linda on May 20, 2007

Find solutions of the equation in the interval [0, 2pie} Cos(x+pie/3)+Cos(x-pie/3)=1 I need to show work without calculator and be able to check in order for it to work Thanks for help

asked by Mike on May 24, 2010
57. ## chemistry - instrumentation

What can account for differences in the calculated value of a drug concentration in a sample as determined by standard curve method and response factor method?

asked by Anonymous on November 2, 2014
58. ## Math

2. Assuming your weekly gross earnings are \$525, calculate your withholding tax using the wage bracket method and the percentage method.

asked by John on February 3, 2014
59. ## math

A clock is 4 minutes fast when the correct time is 10am,but it is losing 2 minutess every half hour.What time will it show when the correct time is 4pm.the same day?would u please show me how to work it out,thanks

asked by lien on May 12, 2013
60. ## finance charges

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. (Round your answers to the nearest cent.) \$500 balance, 17%, \$50 payment (a)

asked by Anonymous on November 16, 2013
61. ## algebra

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. (Round your answers to the nearest cent.) \$300 balance, 18%, \$50 payment (a)

asked by Mary Ann on May 18, 2014
62. ## Math-examples?

Can anyone give an example of recursive method, explicit method using the variable n?

asked by Helen on December 20, 2013
63. ## intermidate alegebra

ac Method 15t^ -17t-4 ac=15*4=60 This the ac Method can you help me finished this problem

asked by JJ on May 12, 2010
64. ## College Algebra

8x - 4y + 2z=16 for elimanation method,substitution method and cramer's rule?

asked by MJ on September 1, 2016
65. ## Java

If I declare a method static, does it mean only a class can call that method?

asked by Luke on May 5, 2019
66. ## math

What is the difference between Gauss Jordan method and the Echelon method

asked by Holly on July 22, 2010
67. ## maths

the easiest method for simutanious equations using subsitution method is??

asked by salman on October 22, 2009
68. ## Math-examples?

Can anyone give an example of recursive method, explicit method using the variable n?

asked by Helen on December 20, 2013
69. ## Math

Please help me answer this question At the Cats galore cat show, 1/2 cat were Siamese, 1/6 were Persian, 1/5 were Abyssinian and 4 cats were tabby. how many cats were at the show? write an equation and solve it Thank you BJ

asked by BJ on October 26, 2015
70. ## thermodynamic

1.5kg water in a closed system initiallu have a pressure of 700 kPa and x=0.7.Then,water had been expanding at constant temperature process until the pressure decrease to 150kpa.During the process,1000kJ heat was transferred to the system.Determine the

asked by SYAZWANI URGENT on November 1, 2012
71. ## math

1.How many grams of carbon monoxide are needed to react with an excess of iron (III) oxide to produce 198.5 grams of iron? Fe2O3(s) + 3CO(g) ----- 3CO2(g) + 2Fe(s) Show all work! 2.Hydrogen gas can be made by reacting methane (CH4) with high temperature

asked by Anonymous on November 27, 2018
72. ## Math

If 3 dice are thrown, in how many ways can we obtain a sum of 12? Please explain step by step and the easiest method to solve this?

asked by Sassy Girl on September 7, 2019
73. ## math

I would appreciate any help thanks select two intergers between -12 and +12 write two equations that have the two intergers as solutions. solve the equation using addition/subtraction method

asked by yorkie16 on April 16, 2009
74. ## Pre-Calculus

Is it possible to factor x^3 - 9x^2 + 24x - 20 and solve for x by hand? I tried using the grouping method and got x^2(x-9) + 4(6x-5) but how can I continue solving for x? If I use a calculator I get x= 2 and 5 but is it possible to find this by hand?

asked by Ann on December 16, 2013
75. ## math

Solve the linear programming problem by the method of corners. Find the minimum and maximum of P = 3x + 2y subject to 3x + 5y ≥ 20 3x + y ≤ 16 −2x + y ≤ 2 x ≥ 0, y ≥ 0 The minimum is P = at (x, y) =

asked by Brian on June 10, 2017
76. ## math

Solve the linear programming problem by the method of corners. Find the minimum and maximum of P = 3x + 2y subject to 3x + 5y ≥ 20 3x + y ≤ 16 −2x + y ≤ 2 x ≥ 0, y ≥ 0 The minimum is P = at (x, y) =

asked by Brian on June 9, 2017
77. ## Science

Which of the following is not a method by which minerals form a crystallization BD crystallization see water evaporation from a solution see cooling of magma or lava I pic c?

asked by Me on January 29, 2019
78. ## circuit analysis

The question is to determine the range for Vs in which both diodes are on: --------R1-------+D1- ---------------- -D2+ -------- | | | | | | Vs R2 R3 | | | ---------------------------------------------------------- Where R1 = 1Kohm, R2 = 2Kohm, R3 = 2Kohm

asked by EE student on September 17, 2018
79. ## government

During the middle 1930s the WPA (Works Progress Administration) put unemployed people to work building bridges, roads and school paid for by posting US Bonds. Why could that not work to solve economic and similar problems today?

asked by Charles on September 6, 2011
80. ## chemistry

How would you solve this problem?... magnesium metal reacts rapidly in hot water. Predict the mass of pericipitate that will form if a 2.0g strip of magnesium reacts completely with water. *Use the 5-step method* *Answer: 4.8g* I don't know what the five

asked by B on October 24, 2006
81. ## Math

1. Tell whether the system has one solution infinitely many solutions or no solution. 6y=-5x+24 2.5x+3y=12 a. one solution b. infinitely many solutions*** c. no solution 2. Tell whether the system has one solution infinitely many solutions or no solution.

asked by Kaai97 on January 11, 2016
82. ## Pre-Algebra

Can someone show me how to solve this problem step by step?Here is the problem, 26cm/s= m/min,how to solve it by convert rate suing dimensional analysis.

asked by kj on January 1, 2011
83. ## algebra

I have a problem that I have no idea how to solve. The instruction say to solve and check the given equation by rational exponents. The equation is: x to the 5/2 power = 32. Can you show me how to do this step by step?

asked by ron on December 7, 2011
84. ## inequity question

Can someone show me how to solve the inequality below? -5(x + 4) > 3(x - 4) To solve, treat it as you would an equation. First, multiply each side out, then get the numerical terms on one side and the x terms on the other. I hope this helps. Thanks for

asked by Christian on May 29, 2007
85. ## Computer Science

(From Lesson 17 of Blue Pelican Java) Use the following code for problems 1 – 15. In each problem state what’s printed. String s = “Lucky hockey puck”; String m = “uck”; int j = 6, z = 99; 1. int k = s.indexOf(m); System.out.println(k); 2. int

asked by Erinn on November 24, 2015
86. ## Algebra

I am re posting this for fear that it was overlooked earlier. I have also decided to show my work in the hopes of preventing any issues that might arise. Solve the absolute value equation. I y+3 I +5=2y Would the solutions be 8=y and y=2/3? Subtract 5 from

asked by Anonymous on October 13, 2009
87. ## Algebra 2

So I solved this problem but, strange as it sounds, I don't know how to do the work. Here's the question: One number is eight less than another number. The sum of the numbers is eighty. Find both numbers. Here's what I've got: y-8=x x+y=80 x=36 y=44 I

asked by Louis on October 17, 2015
88. ## algabra

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
89. ## chemistry

A. What is the standard potential, in volts, of a galvanic cell made of Ce4+ and Cu2+, given the standard reduction potentials below? Ce4+ + e− → Ce3+ Eº = 1.61 V Cu2+ + 2e− → Cu(s) Eº = 0.34 V I think it is 1.27 V but it might be 1.95V b. How

asked by Morgan on January 17, 2015
90. ## com220

While cyclical revision is obviously more time-consuming than holistic revision, what might be some advantages of using the former rather than the latter method to revise written work?

asked by anonymoys on November 20, 2008
91. ## Math

Write a linear system of equations that can be used to solve these problems. Then, solve to get your final answer. Please help me solve this. 2. The Clippers scored a total of 80 points in a basketball game against the Bulls. The Clippers made a total of

92. ## Algebra

Can you please help on this Algebra problem? Keana's piggy bank contains \$4.30 in nickels and dimes only. If she has 59 coins in her ban, then what is the sum of the digits in the number of nickels in Keana's bank? Write a system of equations for this

asked by Leroy on December 10, 2016
93. ## Calc: euler's method

Use Euler's method with step size 0.2 to estimate y(1), where y(x) is the solution of the initial-value problem below. Give your answer correct to 4 decimal places. y' = 1 - xy y(0) = 0 y(1) = ____ ? ... help, this is what i've done but got the wrong

asked by COFFEE on June 20, 2007
94. ## physics

If a pulley is 57% efficient and you lift a 35kg box 5m how much work do you do? 1716.75 N*m A crane that is 13m long and is at a 20 degree angle to the ground can hold a load of 296N. What is the torque on the crane? 1,316.10 N*m A cylinder with a radius

asked by anonymous on February 1, 2007
95. ## physics

A car travelling at 25 m/s slams its break leaving skids marks along a distance 125 m as it comes to rest. the coefficient f friction between the tire and the road is a 5 b 2.5 c 1 2 .4 e .25 A 500N worker pulling a 500 N crate on a rope with a force of 50

asked by Anthony on February 20, 2017
96. ## chemistry

Strychnine, C21H22N2O2(aq) is a weak base but a powerful poison. Calculate the pH of a 0.001 mol/L solution of strychnine. The Kb of strychnine is 1.0 x 10^-6 My work: I called Strychnine SN SN + HOH --> SNH+ + OH- Kb = (SNH+)(OH-)/(SN) (SNH+) = x (OH-) =x

asked by Ross on April 7, 2008
97. ## chemistry

Strychnine, C21H22N2O2(aq) is a weak base but a powerful poison. Calculate the pH of a 0.001 mol/L solution of strychnine. The Kb of strychnine is 1.0 x 10^-6 My work: I called Strychnine SN SN + HOH --> SNH+ + OH- Kb = (SNH+)(OH-)/(SN) (SNH+) = x (OH-) =x

asked by Ross on April 7, 2008
98. ## Physics Urgent

A 3.2 kg block is hanging stationary from the end of a vertical spring that is attached to the ceiling. The elastic potential energy of this spring/mass sytem is 2.2 J. What is the elastic potential energy of the system when the 3.2 kg block is replaced by

asked by Papito on April 24, 2007
99. ## science

Discuss the importance of each step in the scientific method. Why do you think scientists utilize this type of experimentation and reasoning? I will be happy to critique your thinking. Try this site: (Broken Link Removed) Steps of the scientific method 1.

asked by Anonymous on June 6, 2007
100. ## Dynamics

Find the angle of banking for a highway curve of 300 ft radius design to accommodate cars traveling at 100 mph, if the coefficient friction between the tires and the road is 0.6. What is the rated speed of the curve? show solution step by step show FBD (if

asked by 19 on July 14, 2018