# 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 179
1. ## Chemistry

An aqueous solution of copper (I) chloride is 15.7% by mass copper (I) chloride. Copper (I) is 35.8% by mass chlorine. If the solution has a density of 1.045 g/cm³, how many gallons of solution contain 2.3 kg of copper?

asked by Matthew on October 8, 2011
2. ## chemistry

You have been asked to do a dilution of a copper sulfate solution. The solution to be diluted is 2.88 M copper sulfate. What volume of the 2.88 M copper sulfate is required to make 250 mL of 1.03 M copper sulfate solution?

asked by Anonymous on April 10, 2014
3. ## Chemistry

If I have to make a solution with sodium bicarbonate (baking soda) how do i find the molarity and how do i correctly make the solution??? i.e. how do i prepare a solution of sodium bicarbonate with a molarity of 0.01?

asked by Jake on January 8, 2008
4. ## chemistry

24 mL of 0.39 mol/L acetic acid is titrated with a standardized 0.33 mol/L KOH solution. Calculate the pH of the solution after 17 mL of the KOH solution has been added. Assume the Ka of acetic acid is 1.8 x 10-5.

asked by Ericka on April 19, 2008
5. ## chemistry

24 mL of 0.39 mol/L acetic acid is titrated with a standardized 0.33 mol/L KOH solution. Calculate the pH of the solution after 17 mL of the KOH solution has been added. Assume the Ka of acetic acid is 1.8 x 10-5.

asked by Chaitanya on April 19, 2008
6. ## chemistry

24 mL of 0.39 mol/L acetic acid is titrated with a standardized 0.33 mol/L KOH solution. Calculate the pH of the solution after 17 mL of the KOH solution has been added. Assume the Ka of acetic acid is 1.8 x 10-5.

asked by Ericka on April 19, 2008
7. ## chemistry

24 mL of 0.39 mol/L acetic acid is titrated with a standardized 0.33 mol/L KOH solution. Calculate the pH of the solution after 17 mL of the KOH solution has been added. Assume the Ka of acetic acid is 1.8 x 10-5.

asked by Ericka on April 19, 2008
8. ## Intro to Technology

Lab 2.1 (This one's a little less confusing than the others, so I think I can do it with a little help) BACKGROUND: All technology involves a machine or device to process materials, energy or information. These machines are used to change the form of one

asked by y912f on May 18, 2010
9. ## math

Write two inequalities that require that you to use the addition, subtraction, multiplication, and division properties in order to solve them. Solve the inequality you wrote and graph the solutions on a number line

asked by Erica McDonnell on October 5, 2018
10. ## Math

I'm not sure how to do this. Can anyone help me solve it correctly? On the past two quizzes, a student scored a 75 and 83. Write and solve a compound inequality to find the possible values for the 3rd quiz score that would get her an average between 85 and

asked by Help me! on October 30, 2018
11. ## chemistry

A 0.1943g iron ore sample was dissolved in hydrochloric acid and the iron was obtained as Fe 2+ (aq). The iron solution was titrated with Ce 4+ solution according to the balanced chemical reaction shown below.After calculation, it was found that 0.0237 g

asked by matt on October 17, 2010
12. ## science

Identify the three dwarf planets in our solar system. Identify the three dwarf planets in our solar system. http://en.wikipedia.org/wiki/Dwarf_planet

asked by michaela on March 30, 2007
13. ## Math

Which best describes a system of equations that has infinitely many solutions? consistent, independent inconsistent, dependent consistent, dependent inconsistent How many solutions does this system have? y = x + 5 y = -5x - 1 one none infinite two

asked by Starbucks on June 3, 2017
14. ## Ksp/Ka Questions-Chem

I really don't understand how to set this up. Any help is really appreciated! I really don't quite understand how to set up a caluculation to figure out whether a precipitate will form and i'm struggling with the second half too! When 25.75 mL of 0.00826 M

asked by Sigurd on April 8, 2008
15. ## Algebra

I don't know how to solve this at all. You work every Sunday in the yard from 8:00 A.M. To 11:30 A.M. Draw a diagram that shows the rotation completed by the hour hand of a clock during this time. Find the measure of the angle generated by the hour hand in

asked by Stephanie on September 17, 2016
16. ## Computer Science Java

I have to write program for a dice game and use a boolean variable in the application class of the dice game that equals true when snake eyes, doubles, and box cars have been meet. I am having a little trouble doing that in my application class so I was

asked by Lisa on October 13, 2009
17. ## language arts

2) Which sentence BEST explains how art and painting differ slightly in meaning? A) A work of art can be viewed from all angles; a painting can be viewed from only one angle. B) A work of art shows images that cannot occur in real life; a painting shows

asked by matt on October 16, 2018
18. ## Math

I wanted to double check my work. I am trying to find the domain: 1. f(x)= x+5 Answer: No Domain 2. f(x) = 1 X+5 Work: x+5≠0 X=-5 Answer: (-∞,-5) ᴜ (-5,∞) 3. f(x)= √x+2 Work: x+2 ≥ 0 x ≥ -2 Answer: [-2,∞)

asked by kim on September 30, 2014
19. ## Chemistry

25 ml of cloudy ammonia solution is added to a 250 ml Erlenmeyer flask. 50 ml of .1 M HCl is then immediately added to the flask, which reacted with the ammonia in the solution. Next, the solution was titrated with .025 M NaOH to neutralize the excess HCl

asked by Anonymous on February 2, 2014
20. ## ALGEBRA 1

Consider the equation 4x + 6y = 48. Part 1: On your own paper, graph this equation using the slope-intercept method. In the space provided, explain, in words, each step of the procedure you used. Make sure to use COMPLETE SENTENCES IN PERFECT GRAMMER Part

asked by TOBIAS on August 19, 2010
21. ## Math - Algebra 2 some1 plz help?

in a certain math class, each student has a text book, every 2 students share a book of tables, every 3 students share a problem book, and every 4 students share a mathematics dictionary. If the total number of books is 75.. how many students are in a

asked by Agnes on December 2, 2006
22. ## Geometry 2020

HELP!!! I am soooo lost.... I don't understand anything....I can't really show what I am doing because it has a picture but the direction is: Show an organized proof with justification for every step. Given:Parallelogram ABCD Prove: angel 1 + angel 2= 180

asked by ? on October 22, 2008
23. ## I have posted this so many times..can someone help

I need someone to right an introduction to an essay in which you saying that the meaning of the quote bellow is true: "and tuhs the whirigig of time brings back his revenges." I may not be the one to write this but I don't want to see your question go

asked by Gina on October 11, 2006
24. ## physics

1)The difference of potential between terminals of a battery is 6V. How much work is done when a series of negative charges totaling 0.5 C are moved from one terminal to another? 2) Two parallel metal plates have opposite charges and a difference of

asked by Sylvia on February 27, 2010
25. ## mat117/algebra

If the sides of a square are increased by 3 cm, the area is decreased by 36 cm^2. What were the dimensions of the original square? Please show me the formula and how to work. That doesn't sound possible. If the sides of a square are increased, the area

asked by Diana on June 27, 2007
26. ## Maths

Solve for x (exact solutions): sin x - sin 3x + sin 5x = 0 ¦Ð ¡Ü x ¡Ü ¦Ð ---------------- Thankyou. I tried find the solutions on my graphics calculator but however, the question is to find the EXACT solution(s) for the equation so I guess it will

asked by sqleung on February 28, 2008
27. ## Math - Logarithmic

Solve: 2log_3(x) - log_3(x-2) = 2 My Work: log_3(x^2) - log_3(x-2) = log_3(3^2) log_3 [(x^2) / (x-2)] = log_3(27) (x^2) / (x-2) = 27 x^2 = (x-2)(27) x^2 = 27x - 54 x^2 - 27x = -54 27x = -54 x = -2 Textbook Answer: 3 or 6 Where did I go wrong and how should

asked by Anonymous on December 12, 2007
28. ## Algebra

Mary is 15 years older than her niece Katie. In 10 years Mary is two times as old as Katie. How old are Mary and Katie now? How do I solve this (equation + work) Thank you!

asked by Kate on October 29, 2015
29. ## Science

which of the following describes scientific inquiry? (1 point) a statement that describes what scientists expect to happen in an experiment facts, figures, and other evidence gathered through observation the diverse ways in which scientists study the

asked by LOVE on August 15, 2016
30. ## science ( biology)

What are the various method a farmer should do to increase his land fertility by spending less money ???

asked by TUHITUHI on September 13, 2012
31. ## accounting

: Are there any differences between the organizations that adopt a particular accounting method? Please explain your answer.

asked by robbie on April 21, 2011
32. ## Math

−2,−2,3 1,−3,0 −2,3,−2 Find the minor ⓐ a3 ⓑ b3 ⓒ c3 How do I set this up. I know how to use the 2x2 method but with 3x3 im confused.

asked by Josh on March 13, 2019
33. ## greek philosophy and history

How are Aristotle's teachings related to the scientific method used by scientists today?

asked by im_a_h8r_n_luvin_it(only hate certain people) on January 21, 2012
34. ## computers in day care

a method in which children must see and touch objects in order to learn about them is called

asked by alana on June 13, 2011
35. ## maths

using determinant method find the area of the quadrilateral ABCD given the coordinates A(3,3) B(-2,5) c(-1,2) D(1,1)

asked by stephanie on May 11, 2016
36. ## Project Management

I need a Gantt Chet and a Critical Path Method chart for any project.

asked by Karol Goney on July 27, 2009
37. ## Please Help

The method used to calculate depreciation for federal income tax purposes is ?

asked by Math Question on November 22, 2010
38. ## math

Prime factorization of 88 with division and factor tree method. I am not able to do this question.

asked by mauli on August 31, 2016
39. ## algebra

write down each step of the procedure you used, using the slope-intercept method. For the following equation: 4x + 6y = 48

asked by Sarah on November 26, 2011
40. ## algebra

write down each step of the procedure you used, using the slope-intercept method. For the following equation: 4x + 6y = 48

asked by Sarah on November 26, 2011
41. ## trapezoidal method

dy dt = 1 + (t − y)^2, t ∈ [2, 3], y(2) = 1 use a step size of h = 1 and the Trapezoidal method to calculate by hand a numerical value for Y1 (≈ y(t = 3)).

asked by Lee on March 10, 2015
42. ## Psychology

Which research method is BEST at explaining behavior (as opposed to simply describing it)?

asked by jenny on June 11, 2016
43. ## science

why is using a veterinarian's method of finding a dog's age better than x7 to human years.

asked by Anonymous on January 8, 2016
44. ## Chemistry

What factors do you need to consider if you wish to use the volumetric method for preparation of stock ethanol solutions?

asked by Stock Solutions on November 24, 2013
45. ## algebra/math

use the FOIL method to perform the multiplication. (x^1/2-2)(x^1/2+4) I can not seem to find the answer to this problem. Can anyone help? Thank You!

asked by Ashley on September 26, 2008
46. ## calculus 1

Find the limit. Use l'Hospital's Rule where appropriate. If there is a more elementary method, consider using it. lim x → 0 (x 6x)/(6x − 1)

asked by john on November 4, 2017
47. ## science

What step of the scientific method dose it involve clinical trails?

asked by Anonymous on September 11, 2017
48. ## GeOmEtRy!!!

Determine whether a figure with the given vertices is a parallelogram. use the method indicated. P(-5,1) S(-2,2) F(-1,-3) T(2,-2); Slope Formula

asked by VeRoNiCa C. on January 2, 2012
49. ## 9th grade

one method that the sumerians used to survive and overcome the limitations of their geographical enviroment was?

asked by ricardo on February 27, 2009
50. ## psych

what does it mean to be empirical in the pursuit of knowledge? how dies this relate to the scientific method?

asked by diana on September 26, 2010
51. ## Business Calculus

Evaluate each indefinite integral. Use the substitution method. X square root (x+3) dx

asked by Lisa on December 4, 2006
52. ## Analytical chemistry

Why HNO3 only can used for acidification in volhard method not other acids like HCl or H2SO4?

asked by Amal on November 11, 2016
53. ## calculus

Find the limit. Use l'Hospital's Rule if appropriate. If there is a more elementary method, consider using it. lim x→∞ {(5x − 4)/(5x + 3)}^5x + 1

asked by christina on March 17, 2017
54. ## Algebra

Help I'm stuck I need to factor a trinomial expression using the AC method 15x^2 + 31x + 2

asked by Tracy on November 1, 2013
55. ## Math

Is there any way that you can find the area of a circle without using pi? Well, since you can also use the formula pi r^2, any such method would be equivalent to calculating pi in some way.

asked by Kevin on June 13, 2007
56. ## Math

I do not understand how to decide which method would you use to determine whether this proportion is true or false? 19/6=4/27

asked by Bart on April 11, 2010
57. ## science

how do you sepeate a mixture of iron and sulphur using a physical method without using a magnet

asked by Ruan van Rooyen on February 17, 2009
58. ## business communication

Suggest options for presenting information audience. Which method do you think is the most effective?

asked by Jaz on May 14, 2008
59. ## Algebra 2

How do you use the FOIL method if there is only one set of parenthesis... Because you use distributive property with 2 sets

asked by Heather on December 10, 2008
60. ## math

A straight line with slope 5 contians the points (1,2) and (3,K). find the value of K. do we use this method: y2-y/ x2-x

asked by Anonymous on March 15, 2009
61. ## math

Please suggest me a easy shortcut method to factorise cubic equations .

asked by J.Nandhini on September 23, 2012
62. ## algebra/math

use the FOIL method to perform the multiplication. (x^1/2-2)(x^1/2+4) I can not seem to find the answer to this problem. Can anyone help? Thank You!

asked by Ashley on September 26, 2008
63. ## help please:)

In the SQR3 method, the three R's stand for all of the following EXCEPT: A. read B. recite C .revive D. review i got C what do you think?

asked by ciara on September 25, 2011
64. ## Maurya

P4 + HNO3 = H3PO4 + NO2 + H20 balance by partial method

asked by Durgesh on August 21, 2016
65. ## physics(measurement)

What accurate method can be used to determine the thickness of a coin. Explain pls..

asked by benjamin on August 26, 2015
66. ## chemistry

P4 + HNO3 = H3PO4 + NO2 + H20 by partial method balancing

asked by Durgesh on August 21, 2016
67. ## chemistry

blance this equestion with partial balincing method:- Zn+HNo3(very dil)

asked by sabin on August 17, 2014
68. ## Ab Initio Derivative

Can anyone plz post the procedure for finding the derivative of :- e^ax by ab inition method?

asked by Mos Def on November 2, 2010
69. ## chemistry

c6+h6+o2=co2+h2o in acidic medium balance by oxidation method

asked by Anonymous on October 15, 2017
70. ## Math

By the method of the fractions partial determine the function f (t) of the following functions F (s). F(s)= s^2+7s+12/(s+2)(s+4)(s+6) F(s)= (s+3)(s+6)/s(s^2+10s+24) F(s)= 5(s+2)^2/s(s+1)^3 F(s)= s+6/s(s+1)^2 F(s)= 27/(s+1)^3(s+4)

asked by SILVA on March 4, 2012
71. ## math

Estimate the product .choose a method. 81x38= 16x59= 43x25=

asked by Pietro on November 4, 2013
72. ## Chemistry

What method of purification is used to separate iodoethane from traces of hydrogen iodide? Thanks :)

asked by Matt on April 18, 2013
73. ## BIOCHEMISTRY

WHAT METHOD CAN BE USED TO PREPARE 0.2M POTASSIUM PHOSPHATE BUFFER USING KH2PO4 AND KOH?

asked by MODI on February 28, 2011
74. ## Calc 1

Find the limit. Use l'Hospital's Rule if appropriate. If there is a more elementary method, consider using it. lim x→0 (e^9x−1−9x)/(x^2)

asked by TayB on April 20, 2015
75. ## math

Two consecutive whole numbers add up to 31. Find the number using an algebraic method.

asked by odean on June 15, 2019
76. ## Hisyory

How are Aristotle's teachings related to the scientific method used by scientists today?

asked by Alexis on May 21, 2016
77. ## chemistry

what is another way you could determine the enthalpy of formation of magnesium oxide beside the experimental method?

asked by Anonymous on November 25, 2013
78. ## Calc 1

Find the limit. Use l'Hospital's Rule if appropriate. If there is a more elementary method, consider using it. lim x→3 (x^2+3x−18)/(x−3)

asked by TayB on April 20, 2015
79. ## Math

Prime factorize the following using factor tree method: 66, 99, 20, 108, 37 and 450

asked by Jacob on June 4, 2015
80. ## Math

what is the point of intercept for 30x+50=25x+75 using the equal values method

asked by Reece on March 3, 2013
81. ## Chemistry

How would you purify decanoic acid contaminated with biphenyl? what method and solvent.Please help me

asked by SK on November 11, 2007
82. ## algebra

Find all real or imaginary solutions to equation. Use the method of your choice. 3v^2+4u-1=0

asked by Jessica on July 20, 2009
83. ## science

describe 2 different ways to find the volume of an object. why might you choose to use on method or the other?

asked by PLEASE HELP ME on September 13, 2011
84. ## Organic Chemistry

How would you purify Fluorene contaminated with ethyl-4-aminobenzoate? What method and solvent you would use? Please help...

asked by Scott on March 2, 2009
85. ## Calculus 1

Use Newton's method to approximate the root of the equation x^3+x+2=0 with initial guess x1=-1 gives:

asked by Olivia on October 31, 2011
86. ## science

P +HNO3 gives HPO3 + NO Balance the chemical equation by oxidation no. method

asked by mohd atif on February 23, 2016
87. ## Algebra

Using complete sentences, explain how to graph y = x - 2 using the slope-intercept method.

asked by Kelvin on July 24, 2011
88. ## Math page 167 algebra did you hear about...

Hi I need help with this one problem. It's on page 167 algebra with pizzazz. It has to use the addition method. 3x-5y=7 5x-2y=-1

asked by J on February 5, 2013
89. ## physic

anyone can suggest a method to determine specific heat of non-volatile liquids?

asked by yuss on March 6, 2011
90. ## research

What is the most controllable method of increasing the precision of or narrowing the confidence interval

asked by Anonymous on January 27, 2011
91. ## science

Why do you think that the Scientific Method is so important when we talk about the development of Psychology as a science?

asked by mac on September 28, 2010
92. ## calculus

sketch the graph of the line defined by y 2 +4 using the dual-intercept method.

asked by Anonymous on September 15, 2011
93. ## statistical inference

find an estimator for theta from gamma distribution using method od moment

asked by saimi on September 7, 2014
94. ## Math

What is the method used to calculate depreciation for federal income taxes(USA)?

asked by Alarena on November 27, 2007
95. ## calculus

y' = 2y(1/2) , y(0) = 8 The function starts with y0 = 4 ,what is Euler’s method for computing yk+1 from yk with step size ∆t.

asked by melina on March 28, 2017
96. ## math

Average of 4 dates marked in calender 4,5,6,10 how do u write method wise

asked by venkatesh on July 25, 2016
97. ## analytical chm

Analytical Balance which weighing method does one use when drying constant weight? Why?

asked by harune on September 7, 2014
98. ## worl history

one method that the sumerans used to survive and overcome the limitations of their geographical environment was

asked by agustin on November 29, 2009
99. ## Bio

what is another method for classifying bacteria? (other than shape or cell wall structure). thanks! :)

asked by Josh on March 2, 2011
100. ## Math

Find the positive square roots by factors method of 10816

asked by Hira on June 8, 2017