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

33,307 questions
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

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

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

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

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

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

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