1. Maths

    Solving Simultaneous equation Y=x-2 Y=x^2+3x-5

    asked by Becky on May 12, 2014
  2. algebra

    hi could you please take me through the steps of solving the simultaneous equation graphically thank you. y-x+4=0 y-8+x=0

    asked by lila on October 8, 2009
  3. Engineering

    I need help solving the following simultaneous equations, for the values of Vo and a: 1.4 = Vo e^-32a 4 = Vo e^-6a I've never come across simultaneous equations like this (e is the base of natural logarithms, so perhaps taking logs of both sides might

    asked by Stuart on May 13, 2007
  4. Math

    A particular Chemistry book costs $6 less than a particular Physics book. Two such Chemistry books and three such Physics books cost a total of $123. Construct two simultaneous equations and solve them using the substitution method. Show your working. I

    asked by anonymous on February 23, 2018
  5. Physics

    Two events that are simultaneous in one frame of reference will be: A) simultaneous in all frames of reference B) simultaneous in another frame that is moving in the opposite direction C) simultaneous in another frame of reference that is moving in the

    asked by Jeff on January 12, 2010
  6. Mathematics

    The value of a certain fraction becomes 1/5 if one is added to its numerator. If one is taken from its denominator, its value becomes 1/7. Find the fraction by setting up a pair of simultaneous equations and solving them

    asked by Jiskhaa on March 13, 2012
  7. exponential and logarithmic graphs question

    hi, i desperately need help solving this question: Find the values of A and k if the general equation of the graph shown is y=Ae^kx where the graph goes through the points (-1,-4) and (-2,-10) do i solve it using simultaneous equations? because i have

    asked by elle on March 21, 2007
  8. Math

    How do I solve this simultaneous equation 3x-2y=5 (1) 2y-5x=9 (2) I managed to find the value of x and that is -7 but I am having problems to substitute it's value in equation (1)

    asked by Vince on May 16, 2010
  9. System of equations

    3x =2y = 17 2x-y =9 and 3x+y = 3 x+2y = -4 How do I do these?? 22Z 6Y These are simultaneous equations. You have a typo in #1. For the second set, just multiply equation 1 by 2, then subtract equation 2 from equation 1 (which will eliminate y), then solve

    asked by Gracie on August 21, 2006
  10. maths

    solve the simultaneous equation 1/y + 1/x =5 .......(i ) 1/x - 1/y =1 ........(i i )

    asked by somay on April 25, 2016
  11. maths

    Solve the following simultaneous equation: 8x+3y=23 6x+5y=9

    asked by nabiha on March 15, 2010
  12. math

    solve the simultaneous equation 2x+2y=7 x^2-4y^2=8

    asked by fardeen on November 20, 2010
  13. asu prep

    solve simultaneous equation 1/2x+2y=16 2x +1/2y=19

    asked by comfort on November 12, 2017
  14. math

    solve the simultaneous equation 2y=3x-13 5x-6y=23

    asked by charlene on April 13, 2015
  15. Maths

    To solve the simultaneous equation 1.4x + 3y = -1 2y - 3x = -12

    asked by Jeremiah on June 26, 2016
  16. math

    answer this simultaneous equation please. 3a-b=9 2a+2b=14

    asked by Rhondi on October 15, 2008
  17. algebra

    If dx=-18 and D=3 are the values of certain simultaneous equation in x and y. What is the value of y

    asked by Sonu on January 12, 2012
  18. Mathematics

    Solve the simultaneous equation: x^2 + y^2 = 13 and x + 3y = -3

    asked by Grace on February 9, 2017
  19. maths

    solve the following simultaneous equation: 5x+2y=29 x-y=-4 2x-y=-1 3x-y=2 5x+y=16 x-2y=1 5x+2y=16 -3x+4y=-7 3x+2y=19 5x-2y=5 7x-1/3-2(7y+3)/5=10/3 5x+2/4+3y-2/5=16/5

    asked by JERMAINE on February 11, 2010
  20. Math

    please answer this simultaneous equation. 3a-b=9 2a+2b=14

    asked by Rhondi on October 15, 2008
  21. Mathematics

    simultaneous equation x squared = 4-y x = y+2

    asked by India on April 20, 2012
  22. Math

    x^2 + 9y^2 = 37 x - 2y = -3 simultaneous equation by elimination

    asked by Princess on December 11, 2012
  23. maths algebra

    HI STEVE, THANKS for your reply back it was the wrong answer the one you worked, yes a hard question, here is an example of simultaneous questions. x-2/3 + y-1/4 =13/12 (1) 2-x/2 + 3+y/3 =11/6 (2) first step is to get rid of fractions. in equation (1) the

    asked by mohammad on November 13, 2014
  24. Math

    9(x+2)(x+1)-2(x+2)-4(x+1)=0 I'm in the middle of solving an equation. I know that you have to FOIL but how did they get 9(x^2+3x+2)-(4x+4)=0 ? I thought you distribute the 9 through (x+2)(x+1). and why is it (4x+4) instead of (4x-4) because -4 x 1 = -4

    asked by Beth on June 9, 2013
  25. math

    how do you solve that pair of simultaneous equation^2=4-y x=y+3?

    asked by Cathrine on January 25, 2010
  26. Math

    Solve the simultaneous equation 1/p minus 1/q = 3/2 1/p plus 1/q = 4

    asked by Nicole on March 18, 2015
  27. math

    how do you solve that pair of simultaneous equation^2=4-y x=y+3?

    asked by Cathrine on January 25, 2010
  28. Maths

    Can you pliz help me solve the following simultaneous equation 3x-y=2 and 3y+9x=4

    asked by Smangele Phakathi on September 20, 2013
  29. math

    how do you solve that pair of simultaneous equation^2=4-y x=y+3?

    asked by Cathrine on January 25, 2010
  30. math

    solve the following pair of simultaneous equation 5x-2y=14, 2x+2y=14

    asked by nwosu miracle on November 6, 2016
  31. maths

    solve the following simultaneous linear equation: -5x+6y=44 9x+7y=-8

    asked by nabiha on March 15, 2010
  32. math

    the sum of the ages of two siblings is 23 and the difference between their ages is 7. if frank is the older brother of beth, determine their ages by creating a pair of simultaneous equations and solving them. this is killing me i have been working on it

    asked by lucy on September 10, 2015
  33. Math

    Simultaneous equation and surds 5x-3y=41 (7route2)x+(4route2)y=82

    asked by Tom on October 2, 2010
  34. Mathematics

    Use Elimination Method To Solve This Simultaneous Equation 5V=11+3U 2U+7V=3

    asked by Francisca on January 22, 2019
  35. MATHS

    SOLVE THIS SIMULTANEOUS EQUATION USING SUBSTITUTION METHOD 3X+Y=11 AND 2X-Y=4

    asked by DARLINGTON on February 2, 2016
  36. Maths

    solve simultaneous equation by substitution method 3x+2y=12, 4x-3y=1

    asked by Esteem on December 1, 2018
  37. Math

    Solve the simultaneous equation P^2-Q^2=40 Q+P=10 Using the substitution method

    asked by Zulaiykherh on January 3, 2017
  38. algebra

    solve the following simultaneous equation algebraically,for a and b 8a+5b=23 12a+3b=12

    asked by walter on October 23, 2007
  39. Math

    Solve the simultaneous equation n/4-m/6=-1 Using elimination method

    asked by Zulaiykherh on January 3, 2017
  40. Maths

    Solve the following simultaneous equation by substitution method 5x+y=35 & 3x-2y=14

    asked by Anonymous on February 4, 2015
  41. Math

    solve simultaneous equation,* *4m=(9-n)²* *4n=(3-m)²* Show workings

    asked by Mjay on June 7, 2018
  42. Math

    Solve the simultaneous equation n/4-m/6=-1 m/5+n/2=10 Using elimination method

    asked by Rukayyerh on January 8, 2017
  43. math

    solve the simultaneous equations to find the coordinates of the point of intersection for the pair of lines of the simultaneous equations. Then check the answer by graphing the equations 3x-y=-4 2x-y=0

    asked by Lauren on October 16, 2010
  44. equations of tangents and normals

    hi, i'd really appreciate some help solving this question! I am completely at loss here :/ The question is to: Find the equation of the normal to y=loge(x+2) which is parallel to the line with equation y+3x-5=0 I am fine at solving these sorts of equations

    asked by elle on May 20, 2007
  45. 5a-2b=14 , 2a+2b=14

    Use the method of elimination to solve the following pairs of simultaneous equation 8y+4z=7 6y-8z=41

    asked by Gabriel on March 6, 2016
  46. math

    use the method of substitution to solve the following pairs of simultaneous equation. 2m+n=0,m+2n=3

    asked by joel on January 29, 2017
  47. Math

    How is solving a rational equation different from solving linear equations like 3x+5=7x-2?

    asked by Hannah on December 14, 2017
  48. maths

    Solve simultaneous equation. log2(x-14y)=3 logx-log(y+1)=1

    asked by muleya on August 13, 2018
  49. maths

    simultaneous equations x + 2y = 4 3x - 4y = 7 x=3 and y = 1/2 i need to explain how i got this answer and do not know how to do that? i am confused about how you got this answer what working out is it the object in "elimination" is to get the coefficients

    asked by Vicki on April 15, 2007
  50. Math

    Explain how solving a linear inequality is similar to solving a linear equation. Explain how solving a linear is different from solving a linear equation.

    asked by Cindy on February 8, 2011
  51. math simultaneous equation with surds

    ive got quite far but im stuck, can you go through each stage so i can check. simultaneous equation with surds 5x-3y=41 (7root2)x+(4root2)y=82 thanks for the help

    asked by jim on October 1, 2010
  52. Maths

    solve the following pair of simultaneous equation: (x/a)+(y/b)=1 (x/b)+(y/a)=1 can someone help please?i have no idea how to solve it =( x/(ab) + y/b^2 = 1/b x/(ab) + y/a^2 = 1/a Subtract one from the other y(1/b^2 - 1/a^2) = 1/b - 1/a y(1/b + 1/a)(1/b -

    asked by Emma on July 11, 2007
  53. Chemistry

    I need help in solving this problem: A certain substance has a heat of vaporization of 42.46 kJ/mol. At what Kelvin temperature will the vapor pressure be 5.00 times higher than it was at 291 K? I know that I have to use the Clausius-Clapeyron equation,

    asked by Confused on February 24, 2013
  54. college algebra

    compare and contrast the ways in which solving a linear inequality is similar / dissimilar to solving a linear equation please explain

    asked by Debra on September 9, 2014
  55. MATH URGENT

    a. Solve a – 9 = 20 b. Solve b – 9 > 20 c. How is solving the equation in (a) similar to solving the inequality in (b)? d. How are the solutions different? I don't know how to do this i forgot ... could u help (Steve, or Mrs.Sue, or Writeteacher plz

    asked by Gabby on January 18, 2013
  56. physics

    Can someone please explain to me why or how this statement is true? I don't understand it.. Two events that are simultaneous in one inertial frame of reference will not necessarily be simultaneous in any other inertial frame of reference. Thank you

    asked by kayla on February 11, 2013
  57. Algebra

    Explain the difference between solving a linear equation graphically and solving a system of equations graphically. How would I go about doing this?

    asked by Suzanne on February 18, 2009
  58. math algebra

    COULD SOME OF WITH DEGREE IN MATHS HELP ME TO SOLVE THIS SIMULTANEOUS EQUATION PLEASE, PLEASE ? I HAVE RIED DIFFERENT METHODS BUT IT CANNOT GET THE CORRECT ANSWER, AS IN THE BOOK. X-3/4 -Y-2/5 = -1/4 (1) 4-X/3+ 3-Y/2 = - 13/20 (2) 5x-15-4y+8= -1 5x-4y=17-1

    asked by mohammad on November 12, 2014
  59. Math

    How is solving a rational equation the same as solving any other equation?

    asked by Hannah on December 14, 2017
  60. 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
  61. Math

    Explain how solving a linear inequality is similar to solving a linear equation. Explain how solving a linear inequality is different from solving a linear equation.

    asked by Cindy on February 8, 2011
  62. Calculus

    Solve the differential equation dy/dx = -xe^y and determine the equation of the curve through P(1,2) I tried solving the differential equation and I get y = log(x^2/2 + C). Is this correct? Now I forgot how to find the equation. Thank you!

    asked by Robert on August 6, 2012
  63. Math

    ok so i'm kinda sort of confused... I had this for a equation X^2 + 4X - 1 = 0 and then I was like zero??? zero... really zero... hmm... X^2 + 4X - 1 = dy ???????? That zero does represent when Y equals zero correct??? this allows us to solve for X

    asked by Kate on January 3, 2010
  64. MATH

    Solving by graphing DQ 1 Solving by substitution Solving by elimination Which method do you think would be best to solve this system? y=10x-8 y=1/2x+5

    asked by Anonymous on October 19, 2010
  65. Maths

    Solve this simultaneous equation: x+3y=2 and x/3+y/2 =1 Please explain step by step so i understand for future reference. Thankyou x

    asked by Anonymous on November 6, 2015
  66. mathematics for management

    helo sir/madam can u help me to solve this problem solve the following simultaneous equation logx Y+logy X=5/2 xy=64

    asked by shiha on April 15, 2014
  67. maths

    helo sir/madam can u help me to solve this problem solve the following simultaneous equation logx Y+logy X=5/2 xy=64

    asked by fizz on April 15, 2014
  68. Math

    How do you do this Simultaneous Equation? 3x+4y=14 x+y=3 Please give me the step by step solution. Thanks a lot!

    asked by teg1901 on October 21, 2010
  69. Algebra

    Solving Linear Equations and Inequalities Solve by eliminating x (this is solving 3 linear equations) then substitute to the other two equation x + y + 5z =2 (1) 4x - 3y + 5z =3 (2) 3x - 2y + 5z=1 (3) my teacher gave me the answer she said the solution set

    asked by Clyde on April 25, 2016
  70. Algebra I DONT KNOW HOW TO DO 3 VARIABLES

    Solving Linear Equations and Inequalities Solve by eliminating x (this is solving 3 linear equations) then substitute to the other two equation x + y + 5z =2 (1) 4x - 3y + 5z =3 (2) 3x - 2y + 5z=1 (3) my teacher gave me the answer she said the solution set

    asked by Clyde on April 25, 2016
  71. algebra (check answers)

    1. what equation represents the following word sentence? the quotient of a number b and 0.3 equals negative 10 i think it's b/0.3 = -10 2. which equation is equivalent to the following equation? -3/4x + 1/8 = -3/8 a. -3/4x = -3/8 - 1/8 b. -3/4x = -3/8 +

    asked by teaopi on December 15, 2015
  72. ks maths

    2x - 4y = 12 3x + 2y = 10 whats the answer Do you know how to solve simultaneous equations? Multiply equation (2) by 2, then add eqution 1 to eqution 2. That process gets rid of the y term. Then solve for x. Substitute the value of x into either equation

    asked by Me on July 15, 2006
  73. science

    Two events that are simultaneous in one inertial frame of reference will not necessarily be simultaneous in any other inertial frame of reference. Explain.

    asked by Lisa on April 18, 2019
  74. Physics

    Two events that are simultaneous in one inertial frame of reference will not necessarily be simultaneous in any other inertial frame of reference. Explain.

    asked by HI on July 7, 2018
  75. math

    The area of the wall you are going to paint is 50 feet2. If the width is half the height, what are the dimensions of the wall? In answering this problem follow the steps below: 1. Represent the height as ‘x’ and then write the width in terms of x (for

    asked by Jennifer on January 2, 2012
  76. Math

    Solve the simultaneous equation x+y=1 x squared + y squared=25

    asked by Greg on December 8, 2007
  77. pre algebra

    How do I solve this equation the find te slope of the line? Please show me the steps in solving this equation.

    asked by sherry on February 10, 2010
  78. Math

    Julie is solving the equation x2 + 6x + 9 = 0 and notices that the discriminant b2 - 4ac has a value of 0. This tells her that the equation has

    asked by Jack on October 23, 2012
  79. math

    I need help solving this equation please. Use the qudratic formula to find any x-intercepton the graph of the equation. Y=3x^2+9-1

    asked by Sam on April 24, 2013
  80. MATH

    Julie is solving the equation x2 + 6x + 9 = 0 and notices that the discriminant b2 - 4ac has a value of 0. This tells her that the equation has...

    asked by LINDSEY on May 16, 2013
  81. Math

    7d-4 (d+8) = -8 ??? When I did this equation I got 8=d I know I did something wrong. I just don't know any other way to do it. I did basic equation-solving rules and got his answer. Help?

    asked by Andrey on January 6, 2015
  82. Alg2/Trig

    How would I go about solving this equation algebraically? Find the equation of the parabola y=ax^2 + bx+c that passes through the given points. (2,0) (3,-1) (4,0) Thanks.

    asked by Chris on March 5, 2009
  83. math 2

    Julie is solving the equation 3x2 + 5x + 15 = 0 and notices that the discriminant b2 - 4ac has a value of -155. This tells her that the equation has

    asked by Anonymous on May 5, 2013
  84. maths

    I've to solve the following absolute value equation 8|w-7|=72. I solved the equation and the answers I got were -2 and 16. However the problem is that when I'm checking the equation with the answers it's not coming right. I.E. 8|16-7|=72 8|9| = 72 8(9)= 72

    asked by bindiya farswani on January 30, 2010
  85. Math

    having trouble solving equation 8+3x6-4-1=13 can anyone help we have tried everything and it's not working out for me is that 3x or 3*6 3*6 Are you sure you put the right equation? yes. 8+3*6-4-1=13 what do the instructions say? Is this a grouping problem?

    asked by Cory on November 2, 2006
  86. Algebra

    I need help solving an equation Solve the following equation for a. Please show all of your work. C = 1/6 (10b-7a)

    asked by Rebecca on December 18, 2010
  87. maths pls help

    1. Solve the following simultaneous equations: log2 xy = 7 log2 (x^2/y) = 5 2. If log y x =a and log z x=b where x is not equal to 1, express the following in terms of a and b: logy (yz) Solve the following simultaneous equations: y = 2 log3 x y+1 = log3

    asked by Claire on November 21, 2007
  88. Algebra I

    In planning for a new item, a manufacturer assumes that the number of items produced x and the cost in dollars C of producing these items are related by a linear equation. Projections are that 100 itmes will cost $10,000 to produce and that 300 items will

    asked by Katie on August 21, 2007
  89. Calculus

    Hello, I would greatly appreciate any help that I can have with the following calculus question below. It has to do with separable differential equations. I'm also going to explain what I've done so far, so please bear with me (but honestly I don't think

    asked by Stephen on April 16, 2017
  90. algebra attn Reiny

    Thanks for your help with the solving of the three equations! Yes, it was a typo. I just finished solving it a long way, solving for the 1st 2 equations then the 2nd and 3rd and plugging in variables...etc. etc. Your way gave the same answer, but quicker,

    asked by Terri on February 24, 2009
  91. math

    I am getting difficulties by doin this homework.plzzzz can u hel pme;Solve this simultaneous equation;1/3(x+2)-1/4(y-1)=1,5X=4Y(B)SOLVE TO 2 DECIMAL PLACES'x-15/x=12. The second number am not sure of my calcalations;The point (x,y)is transformed by the

    asked by nellyna on August 23, 2007
  92. Math

    a.) Solve a - 9 = 20 b.) Solve b - 9 > 20 c) How is solving the equation in part a similar to solving the inequality in part b? d.) How are the solutions different?

    asked by Jenny on January 17, 2014
  93. MATH

    a.) Solve a - 9 = 20 b.) Solve b - 9 > 20 c) How is solving the equation in part a similar to solving the inequality in part b? d.) How are the solutions different?

    asked by Cindy on January 17, 2014
  94. math

    a. Solve a - 9 = 20 b. Solve b - 9 > 20 c. How is solving the equation in part a similar to solving the inequality in part b? d. How are the solutions different?

    asked by victoria on December 19, 2013
  95. math prob:(

    a. Solve a – 9 = 20 b. Solve b – 9 > 20 c. How is solving the equation in part a similar to solving the inequality in part b? d. How are the solutions different?

    asked by Princess Anna on January 22, 2014
  96. Math

    In the equation ax^2+bx+c=0, one root is the square of the other. Without solving the equation, prove that c(a-b)^3=a(c-b)^3

    asked by Adriana on September 11, 2011
  97. math

    when solving the exponential equation, 2^2x-1=16 what do I do first? do I convert to a log equation?

    asked by Sanya on October 27, 2008
  98. Chemistry

    How would you go about solving an equation like this when all they give you is a equilibrium equation?: Given the standard free energies of formation in Appendix B in the textbook, what is the value of E ^\circ for the cell reaction?

    asked by Claire on June 21, 2012
  99. Chemistry

    How would you go about solving an equation like this when all they give you is a equilibrium equation?: Given the standard free energies of formation in Appendix B in the textbook, what is the value of E ^\circ for the cell reaction?

    asked by Claire on June 21, 2012
  100. Trigonometry

    "Sketch the graph of y=tan(x/2) By solving the equation x/2=-pi/2 x=- pi and the equation x/2=pi/2 x=pi..." Before I go any further, I need to understand where these equations came from. Where does the pi come from out of thin air? What becomes of the

    asked by Ellyn on January 24, 2010