1. math

    solve by the substitution method. 8x+5y=-46 -4x+y=30. What is the solution set, because i have tried to figure this out for 20 minutes, please help

    asked by sharon on October 30, 2009
  2. physics......PLEASE HELP!!

    A steam engine absorbs 1.98*10^5 J and expels 1.49*10^5 J in each cycle. Assume that all of the remaining energy is used to do work. a. What is the engine's efficiency? b. How much work is done in each cycle? If a gasoline engine has an efficiency of 21

    asked by anonymous on February 14, 2007
  3. Chemistry

    f 27.0 mL of Ca(OH)2 with an unknown concentration is neutralized by 32.40 mL of 0.185 M HCl, what is the concentration of the Ca(OH)2 solution? Show all of the work needed to solve this problem. Ca(OH)2 + 2 HCl 2 H2 O + CaCl2.

    asked by Johnny on June 13, 2011
  4. Algebra

    I'm asked to solve the following system using elimination and say how many solutions there are: 4x - 7y = 15 -8x + 14y = -30 The answer says that there are infinitely many solutions, but I am getting 8x - 14y = 30 and -8x + 14y = -30. I think they both

    asked by Anonymous on January 5, 2014
  5. algebra

    solve the following systwm graphically. Be sure to check your solution. if the system has an infinite number of solutions, use set-builder notation to write no solution, state this. 4y=x+8, x=2/3y+2

    asked by jessica on July 9, 2014
  6. HELP!! Chemistry

    Round your answer to the correct number of significant digits and show work. 1. How many grams of NaI would be used to produce a 2.0 M solution with a volume of 10.00 L? 2. What is the molarity of a 2.50 x 102 cm3 solution containing 450.0 g of C6H12O6 ?

    asked by _Unknown on September 26, 2013
  7. algebra

    1. On three consecutive passes, a football team gains 5 yards, loss 18, and gain 50 yards. What number represents the total net yardage? The total net yardage is 2. -4

    asked by Jimmy on April 26, 2010
  8. Chemistry

    Caluculate the molar solubility of PbCl2 in 0.0040 M KI solution. The Ksp of PbI2 - 7.2 x 10^-9. The answer should be 3.29 x 10^-4. This is my work so far PbI2Pb^+2 + I- PbKI2----->Pb^+2 + KI^-1 7.2 x 10^-9=(s)(s+0.0040M) Assume s

    asked by Anonymous on December 9, 2017
  9. math

    How many solutions does the following system have: 2x + 5y = 10 3x + 6y = 12 Explain how to determine the number of solutions without solving the system. Then apply elimination, and interpret the resulting equation.

    asked by Kathy camkat on March 5, 2011
  10. Physics

    please show me how to work out this problem: A roller coaster moves 85 m horizontally, then travels 45 m at an angle of 30.0 degrees above the horizontal. what is its displacement from its starting point? use graphical techniques. the answer is 126 m at

    asked by y912f on January 31, 2009
  11. organic chemistry

    A solution of acetic acid (CH3COOH; Ka = 1.74 x 10-5) was titrated to a final pH of 4.76 by using NaOH solution. What % of acetic acid is converted to sodium acetate (CH3COO-Na+)? Show your method

    asked by brittany on September 12, 2010
  12. Linear Algebra

    Consider the following system of linear equations: 2x1+2x2+4x3 = −12 x1+6x2−8x3 = −6 x1−2x2+9x3 = −8 Let A be the coefficient matrix and X the solution matrix to the system. Solve the system by first computing A−1 and then using it to find X. I

    asked by sal on October 20, 2018
  13. Psy

    Complate the following chart. The first column shows the name of a research method used in psychology.In the second column, write a brief description of that research method. In the column, provide a situation when this method could be applied. Scientific

    asked by Nan on January 25, 2011
  14. math

    A relief package is released from a helicopter at 1600 feet. The height of the package can be modeled by the equation h(t)= -16t^2+1600 where h is the height of the package in feet and t is the time in seconds. The pilot wants to know how long it will take

    asked by mariah on August 2, 2016
  15. MATH!!!!!HELP

    2x+3y = 7 4x-3y = -19 6x=12/6 x = -2 this is elimination method. i have few questions, when do we know wen to add or subtract? multiply? how? i don't know nothing.

    asked by Andraline on January 16, 2011
  16. chemistry

    Calculate the [H⁺] for the aqueous solution in which [OH⁻] is 1 x 10⁻⁹. Is this solution acidic, basic or neutral? Show your work

    asked by mary on March 7, 2018
  17. Algebra

    91. Find the domain of: y=-3x+1 a. all negative numbers b. x>0 c. all real numbers d. x=3 Can someone please show the work and how to solve this problem. There are many of these in my lessons and I don't understand how to solve them. Do you solve for x?

    asked by y912f on May 7, 2010
  18. Chemistry

    What is the molarity of a solution that contains 0.30 moles of KBr in 400 mL of solution. Please show all work

    asked by MEGAN!!!! on April 30, 2010
  19. College Algebra

    Solve using substitution.If the system has infinitely many solutions, express your answer in terms of k. If the system is inconsistent, enter INCONSISTENT. Here is my work: y=5x-5 5x-y=5 5x-(5x-5)=5 5x-5x+5=5 5=5 y=5x-5 k=5x-5 5x=k+5 x=1/5k+1 x,y = (k/5+1,

    asked by Gabbi on April 12, 2017
  20. Science

    solve the system of equations algebraically. show all your steps. y=x^2+2x y=3x+20 Can someone show me step by step on how to get the answer it's, there are answers like this that is going to be on my math test and I don'tget it.

    asked by Jorge on May 11, 2018
  21. free will baptiste

    i am trying to help my daughter with home work but don't understand question. Show 30, Broken Key is 3. Show several ways. if am able to solve one i can help her to the rest.

    asked by samuel on September 28, 2011
  22. math

    Determine whether the ordered pair is a solution of the inequality (5, 12); 6y-7x.7 Is the ordered pair a solution of the inequality? no or yes solve the system of equations by graphing. Then classify the system as consistent or inconsistent and the

    asked by mekhi on July 14, 2008
  23. physics

    At the end of the semester, you are loading your gear into a van to go home. In loading the van, you can either lift a 45.0-kg crate straight up(method 1) or push it up a 3.00-m-long ramp that is inclined at an angle above the horizontal (method 2).In both

    asked by ajo on December 9, 2007
  24. Math Algebra

    Resolve(17x²+14x + 9) – (-13x² +6x - 12) 30xsquared+20x+21 I'll try to be helpful and show the work. This is the method I learned last quarter. (17x"sq"+14x+9) + (13x"sq"+6x+12) = (30X"sq"+20x+21) I used the vertical method but the step are the same

    asked by Rosa on June 5, 2007
  25. Algebra

    Solve each inequality algebraically:how do I solve this problem? What is the answer? Show the work. x+4/x-2 less than equal 1 thanks for your help

    asked by Jackie C on January 11, 2013
  26. college Algebra

    Solve the system, if possible. (If the system is inconsistent, enter INCONSISTENT. If the system is dependent, enter a general solution in terms of x, y, or z.) x + y = 18 y + z = 18 x − z = 0

    asked by Dee on December 13, 2013
  27. college Algebra

    Solve the system, if possible. (If the system is inconsistent, enter INCONSISTENT. If the system is dependent, enter a general solution in terms of x, y, or z.) x + y + z = 7 2x + y + z = 14 x + 2y + 3z = 2

    asked by Dee on December 13, 2013
  28. chemistry

    If 3.5 ml of distilled water is added to 1.5 ml of a 0.150M solution of CoCl2 what is the concentration of the resulting solution? please show the work

    asked by Tonya on April 9, 2012
  29. chemistry- morality

    To what volume should 1.19 ml of an 8.00 m acetic acid solution be diluted in order to obtain a final solution that is 1.50 M? show all work

    asked by liz on May 21, 2017
  30. Math

    I cannot come up with the right answers for my matrix. I need to write as a system of equation and solve the system. 1 2 3 x 1 1 1 1 y = 12 -1 1 2 z 2 The answers I come up with are 31 15 15 when I check these, they will not work, what I am doing wrong?

    asked by Lynn on April 23, 2008
  31. PHYSICS HELP

    If the external world does work on the system, the quantity of work is negative. Is negative right or is it positive? If you are writing the system equations, the work done by external forces will be a + number, indicating an increase of energy to the

    asked by Pat on January 10, 2007
  32. algebra

    solve the system by the method of substitution x-4y=-21 3x+y=2 I got (0,2) Try plugging in x=0 and y=2 into your first equiation and uopu will that your answer must be wrong. Do it this way: x - 4y =-21 12x+ 4y =8 13 x = -13 x = -1 y = 2 - 3x = ? x=0 and

    asked by Rose on December 14, 2006
  33. math

    Could someone check these questions for me? Please? My answers are under the questions... Questions~ 1. Solve: | x | = 6 |6|=6 and |-6|=6 x must be 6 or -6 2. Solve: | x + 7 | = 12 (x+7)=12 and -(x+7)=12 x+7=12 and -x-7=12 x= 5 and -19=x The the solution

    asked by Abby on October 2, 2015
  34. math,correction

    can someone correct these for me i'll appreciate it thank. dirctions: solve 3x-7=2x+8 my answer: x = 15 directions: solve 2/5x=-10 my answer: x = -25 Directions: solve -3(x+1)=2(x-8)+3 my answer: x= -3.2 1 looks ok. Show your work on 2 and 3 and we can

    asked by jasmine20 on January 11, 2007
  35. chemistry

    Calculate the change in internal energy of the system in a process for which 100J of heat is absorbed by the system from surroundings and does 85J of work. (I want to learn the solution on how to calculate it... pls. help thank you... )

    asked by jaycab on January 23, 2011
  36. chemistry

    A particular weak acid (HA) with a Ka of 2.0e-5 is 75% titrated with a strong base to produce a buffer solution. What is the pH of this final solution? Show all work.

    asked by Nicole on March 24, 2015
  37. chemistry

    When you add 100ml of a 0.1M HCl solution to 200 ml of 0.4M NaOH solution what is the pH? can you please show detailed work. o don't understand this

    asked by jen on June 8, 2012
  38. Geometry

    The coordinates of a triangle are X(0,0, Y(2h,2h), and Z(4h,0). Is the triangle a right triangle? Show work to support your answer. I don't really know how to solve this, or show m work.

    asked by Sally on November 17, 2015
  39. Algebra

    Solve the inequality and express the solution in terms of intervals whenever possible. | x+3 | < 0.01 I know the answer is : (-3.01,-2.99) Please show me how to solve this type of math problem.

    asked by Alex on August 12, 2012
  40. Geometry :(

    this maths problem is wrecking my head.... 1.find the points of interesction of the line L and the circle k in the following L:x-2y=0 K:X Squared + y squared=25 I would solve both equations for y, and then you'll have a system with two equations and two

    asked by emer on September 9, 2006
  41. intermediate algebra

    inequalities –1 ≤ x – 3 ≤ 5 –2x – 5 < –2 or x – 3 < –10 Be careful of how a negative x-term is handled in the solving process. Show all math work arriving at the solutions. •Show the solution sets written algebraically and as a union or

    asked by sean on March 15, 2017
  42. algebra 1

    Solve the following systems of linear equations using any algebraic method.If possible,check your solution. 1)2x+5y=3 X-3y=7 2) 3y=11-2x 3x=y-11 3)8x-6y=14 12x-9y=18

    asked by Janet on October 30, 2012
  43. 7th grade math

    find a solution method use backtracking to solve equation; 54=6 (4-7V) _______ 2 7b+1 =2 __________ 4 8(56+12 -1) =64 _____3______

    asked by holiday on March 29, 2011
  44. MATH- Algebra 2

    x^2-6>-5x 6x^2-5x+1

    asked by Blair on February 17, 2013
  45. psy210

    psy 210 CheckPoint: Research Methods Research Method Description Application Scientific method Case study method Survey method Naturalistic observation method Correlation method Experimental method

    asked by Anonymous on February 21, 2010
  46. Math

    Could some one please explian how to do this problem thanks :) A company purchased an air conditioning system for $10,200. The shipping charges on the system were $875, and the set up cost were $1,250,The system is expected to last for five years and has a

    asked by Anonymous on November 13, 2007
  47. PSYCHOLOGY

    provide a situation when scientific method, case study method, survey method, Naturalistic observation method, Correlation method, and Experimental method could be applied

    asked by scooby on November 20, 2009
  48. PSY 210

    Complete the following chart. The first column shows the name of a research method used in psychology. In the second column, write a brief description of that research method. In the third column, provide a situation when this method could be applied.

    asked by MIKE THOMPSON on November 17, 2008
  49. Chemistry;HELP

    Help me set them up and then check my answers? Round your answer to the correct number of significant digits and show work. 1. How many grams of NaI would be used to produce a 2.0 M solution with a volume of 10.00 L? 2. What is the molarity of a 2.50 x 102

    asked by Unknown on August 20, 2013
  50. Chemistry

    Help me set them up and then check my answers? Round your answer to the correct number of significant digits and show work. 1. How many grams of NaI would be used to produce a 2.0 M solution with a volume of 10.00 L? 2. What is the molarity of a 2.50 x 102

    asked by _Unknown on August 18, 2013
  51. Algebraic Systems

    Okay i just wanna know what you think is the easiest between substitution and elimination/combination. I hate elimaination becuase i get confused quicker with this when actually solving it than in substitution, but it's actually easier for me. Still,

    asked by <3Medic+Droid<3 on January 25, 2009
  52. Algebra

    Foam fingers sold for $5. Spirit bracelets for $4. You sold 40 more foam fingers than bracelets and earned $965. Write a system of equations to describe this situation. Solve this system using as least 2 different methods. Explain each method.

    asked by Jake on January 26, 2009
  53. physics- please check

    a. Two sticks are rubbed together to start a fire. b. A firecracker explodes. c. A red-hot iron bar is set aside to cool. In which of the situations listed above is energy being transferred as heat to the system in order for the system to do work? I would

    asked by Anonymous on February 4, 2007
  54. Business English

    What are two or three solution that might improve the efficiency of my office What does each solution involve and how much work and money is required to introduce that change How exactly does each change solve the problem? which is the best solution at

    asked by Joycelyn on November 21, 2008
  55. Algebra

    Solve using the appropriate method. 0.05x+0.25y=66 0.15x+0.05y=72 I came up with the answer (420,180) Is this correct? a)The solution is___?(simplify your answer. Use integers or fractions for any numbers in the expression. Type an ordered pair)

    asked by Josie on February 22, 2014
  56. math

    Find conditions on k that will make the following system of equations have a unique solution. To enter your answer, first select whether k should be equal or not equal to specific values, then enter a value or a list of values separated by commas. Then

    asked by Excel on October 12, 2015
  57. Algebra 2

    Solve for B: P.S. How do you solve for variables? Show your work. 3V=4(pi)a^2(b) I would truly appreciate it, if you helped! ^-^

    asked by Shawol on October 12, 2011
  58. Chemistry

    Calculate the molarity of a solution made by dissolving 0.680 grams of Na2SO4 in enough water to form exactly 940 mL of solution. Please show me how to solve

    asked by Veronica on October 7, 2010
  59. Chemisty Help Please!

    A solution is prepared by dissolving 25.0 g of glucose, C6H12O6, in 125 g of water at 25oC. (show work please) Determine the freezing point of the solution.

    asked by Igor on January 14, 2014
  60. Algebra

    Explain why the addition method might be preferred over the substitution method for solving the system 2x-3y=5 5x+2y=6 Am lost on these.Please help

    asked by Logan on March 14, 2011
  61. Algebra

    Solve. Please show the algebraic inequality you used and show all of your work. Stephanie has the following scores on her algebra tests: 85, 92, and 71. What score must she earn on her fourth test in order to have an average of 80 or above?

    asked by Geena on May 4, 2011
  62. Algebra

    When is the substitution method a better method than graphing for solving a system of linear equations?

    asked by Cassidy on January 28, 2013
  63. Algebra

    Is there a difference between solving a system of equations by the algebraic method and the graphical method? Why?

    asked by Duck on February 22, 2008
  64. Math

    Is there a difference between solving a system of equations by the algebraic method and the graphical method? Why or why not?

    asked by Craig on March 10, 2010
  65. Algebra

    Explain why the addition method might be preferred over the substitution method for solving the system 2x-3y=5 5x+2y=6

    asked by Amy L on March 15, 2011
  66. Algebra II

    We are learning how to solve systems using elimination. 2y - 1 = 3x - y / 5 3x - 4 / 8 = y/4 How would I begin to solve this? I'm mostly unsure of how to simplify the fractions. Thanks so much :)

    asked by Lindsey on February 22, 2011
  67. Science Project Help

    Hello, My science project is asking me to "compose a scientific summary of your method, observations, data, and conclusions" on determining the volume of both regular & irregular objects. They wanted me to answer the 4 questions below in my summary: 1. Why

    asked by NAtasha on January 4, 2016
  68. Algebra

    What is the graph of the system? y ≤ −x − 1 y ≥ 2x + 4 Would I use elimination for this?

    asked by meh on January 4, 2018
  69. Precalculus...repost.. The tutor didn't quite answ

    Calculate the solution set. x^2+y^2+8x=-15 9x^2+25y^2=225 My work: I did elimination...multiplied -25 to the top equation and got..... -16x^2-200x-600...I then used quadratic formula ... And got -7.5 and -5..... Is -7.5 an EXTRANEOUS SOLUTION because when

    asked by Anonymous on May 24, 2014
  70. Precalculus

    Calculate the solution set. x^2+y^2+8x=-15 9x^2+25y^2=225 My work: I did elimination...multiplied -25 to the top equation and got..... -16x^2-200x-600...I then used quadratic formula ... And got -7.5 and -5..... Is -7.5 an EXTRANEOUS SOLUTION because when

    asked by Anonymous on May 24, 2014
  71. algebra

    Could someone show me how to solve system of equations by graphing? 9x-9y=-45 9y-9x=45

    asked by Casey on March 19, 2008
  72. Algebra 2

    Solving Quadratic System y=4x+1 2x-y+1 Please show work!!!

    asked by Alicia on November 21, 2014
  73. MATH#2

    find the solution to system by the substitution method. y=2x+5 y=3x The answer is(5,15). Just don't know how the professor got that answer.

    asked by Anonymous on August 20, 2014
  74. math help pls pls

    Two systems of equations are shown below: System A 6x + y = 2 −x − y = −3 System B 2x − 3y = −10 −x − y = −3 Which of the following statements is correct about the two systems of equations? The value of x for System B will be 4 less than

    asked by Oscar on December 21, 2015
  75. algebra

    How would you explain to a 6th grader the difference between solving a system of equations by the algebraic method and the graphical method?

    asked by Anonymous on January 13, 2011
  76. Math

    Solve the system below: Y= x^2-4 Y= -4 A. 0, -4 B. -4, 0 C. 0, -4)(-4,0 D. No solution

    asked by Alysa on April 22, 2016
  77. College Algebra

    Solve the system: x + y + z = -1 2x + 2y + 5z = 1 5x + 2y + 3z = 8 what is the value of x in the solution?

    asked by Eli on December 11, 2010
  78. Algebra

    How do you solve an equation with a fraction like x^(2/3) +13=17. I don't think the quadratic formula would work for this method, and neither would completing the square. What should I do?

    asked by Leyla on November 23, 2009
  79. math

    (Systems) how do I solve 5x+3y=2 and x+2y=6 using substition This is what I did X+2y=6 eq.1 5x+3y=2 eq.2 X=-3y/5 Sub(x=-3y/5) into eq.1 -3y/5 + 2y=6 7/5y=6 y=30/7 Sub(y=30/7) into eq.2 5x+3(30/7)=3 5x+90/7=3 5x=-69/7 x= -68/35 The answer I got was (-68/35,

    asked by Esther on March 1, 2017
  80. Microbiology

    What is the preferred method of sterilization for heat-sensitive solution? In addition, note a heat-sensitive solution that can be sterilized using the method you noted. a. Preferred method: b. Example:

    asked by Rose on September 26, 2014
  81. MATH/ALGEBRA

    I am going over some math homework and need to know if I am getting the right answers. 1. Solving by elimination: 2x+3y=3, and 4x+6y=6 I say the determinant is o, there is no solution 2. y-11>2y-2 Is 1,-15,-17,-2 solutions: My answer = 1 is not, -15 is,

    asked by HGO on December 19, 2009
  82. algebra

    I NEED HELP SOLVING THIS PROBLEM ,PLEASE EXPLAIN AND SHOW HOW TO SOLVE the answer ."I HAVE 63 LITERS OF HYDROGEN PEROXIDE, HOW MANY TEST TUBES CAN I FILL IF EACH CONTAINED 7/8 OF A LITER?" PLEASE SHOW ME YOUR WORK. AND THANK YOU IN ADVANCED.

    asked by Chuck on October 11, 2011
  83. Algebra

    Need help with these-- 6. Chase scored 14 points on Monday, and he doubled his score each day thereafter. How many points did he score on Thursday? 8. Find a solution to the following system of equations using elimination: -5x + y = -5 -4x + 2y = 2 21.

    asked by mysterychicken on June 11, 2010
  84. English

    Correct all errors using standard proofreading marks. After reviewing our Current Method of keeping track of employees hours; we have concluded that time cards leave a lot to be desired. So starting Monday, we have a new system, a time clock. You just have

    asked by Tino Martinez on September 5, 2009
  85. SIMULTANEOUS EQUATION

    Solve the equation 5x^2-5x-63=0 by using the "complete the square" method. Give your answer to 2 decimal place. Please show me in clear steps how to get the answers 4.08 and -3.08.

    asked by Cheezel on June 24, 2016
  86. math ergent please please...

    10.a)Solve the inequality x^3-5x^2+2x+8

    asked by kavi on November 29, 2013
  87. alegebra

    solve the sytem of equation by graphing. Then classify the system as consistent or inconsistent and the equation as dependent or independent. y=-x-11 3x-2y=2 what is the solution of the system of equation.,

    asked by anaya on March 23, 2008
  88. Maths

    Solve the following system of linear equations by addition. Indicate whether the given system of linear equations is consistent, inconsistent, or dependent. If the system is consistent, find the solution. {−7x + 7y −9x + 9y == −21 −27

    asked by Leticia on July 12, 2016
  89. information systems

    Assignment: You are required to briefly but properly document the functional requirements for an INVENTORY INFORMATION SYSTEM by creating the following using the correct symbols: 1. The description of the selected information system in the selected

    asked by tom on December 2, 2017
  90. precalculus

    Solve the system of equations at the right by the method of substitution. Verify your results by using a graphing utility. x2+y2-4x+6y-5=0, x+y+5=0 answer: x=-y-5 (-y-5)2+y2-4(-y-5)2+6y-5=0 y=√5-5, y=-5-√5 x+√5-5+5=0 x=-√5 x-5-√5+5=0 x=√5

    asked by Anonymous on December 14, 2016
  91. Math

    Ok so you're supposed to solve the system by method of substitution. And the problem is: -2/3x + y = 2 2x - 3y = 6 So i put y= 2/3x into the second equation which looks like: 2x - 3(2/3x + 2) = 6 and then 2x-2x-6=6 So like everything cancels out? So then

    asked by Carrie on February 15, 2012
  92. 8th grade math - system of equations

    I'm not sure how to solve these. Solve using any method (substitution or elimination) 23. The sum of two numbers is 27. The larger number is three more than the smaller number. What are the two numbers? Ans: l = large; s = small l + s =27 and l = 3S 3s + s

    asked by Alexis on April 27, 2016
  93. math

    Can someone please help me with this math problem. My teacher is looking for me to show my work, but I don't how to solve the problem to show my work. Please help!!! The problem is 2 1/2 + 3 1/4 + 3 5/8. Thank you for your help.

    asked by adore001 on August 24, 2010
  94. MATH

    Two cell phone companies have different rate plans. Runfast has monthly charges $25 plus $10 per gig of data. B A &D’s monthly charge is $18 plus 15 per gig of data. Your task is to determine under what circumstances each company has the better pricing.

    asked by SOMEBODY PLEASE HELP ! on June 2, 2016
  95. Algebra

    Graph the two equations to solve the system. Write the ordered pair solution like this (1,2) with no spaces, or write no solution or infinitely many solutions. x + y = 6 and x - y = 4

    asked by joshua on January 30, 2011
  96. Algebra

    Graph the two equations to solve the system. Write the ordered pair solution like this (1,2) with no spaces, or write no solution or infinitely many solutions. 1/2 x - 2y = 4 and 4y - x = -8

    asked by joshua on January 30, 2011
  97. Algebra 2

    1.) Write a system of equations that has NO solution. 2.) If you wanted to eliminate the y variables in the system of equations below, what would you multiply the first and second equations by?( Do not solve the equation) 2x-3y=8 7x-4y=11

    asked by Audrey on October 4, 2007
  98. Algebra 2

    1.) Write a system of equations that has NO solution. 2.) If you wanted to eliminate the y variables in the system of equations below, what would you multiply the first and second equations by?( Do not solve the equation) 2x-3y=8 7x-4y=11

    asked by Audrey on October 3, 2007
  99. Algebra 2

    1.) Write a system of equations that has NO solution. 2.) If you wanted to eliminate the y variables in the system of equations below, what would you multiply the first and second equations by?( Do not solve the equation) 2x-3y=8 7x-4y=11

    asked by Audrey on October 5, 2007
  100. College Algebra

    using the knowledge of systems of equations, and that the equation of a circle is (x-h)^2 + (y-k)^2 = r^2, where (h,k) is the center and r is the radius. Find the equation of a circle that contains the following points: (6,2), (4,6), and (-3,5). (These 3

    asked by Kevin on December 15, 2011

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