pre calc

solve following using "elimination method"

3x^2 + 4y = 17
2x^2 + 5y = 12

  1. 👍
  2. 👎
  3. 👁
  1. Multiply the first equation by 2 and the second equation by 3, and subtract one from the other. That will eliminate the x^2 variable.

    6x^2 + 8y = 34
    6x^2 + 15y = 36

    7 y = 2
    y = 2/7

    2x^2 = 12 - 5y = 12 - 10/7
    = 74/7
    x = sqrt(37/7) = 2.299

    1. 👍
    2. 👎

Respond to this Question

First Name

Your Response

Similar Questions

  1. elimination

    solve by elimination method:2r +3s=29 and 3r +2s=16

  2. math

    can someone please help me with this elimination methods problem? 0.05x+0.25y=11 0.15x+0.05y=12 solve using the elimination method and give the ordered pair...

  3. Math

    y=3x+2 4x-2y=-8 Solve using Elimination method

  4. math/116

    solve x+y=7 x-y=5 using elimination method

  1. math

    solve the system by the elimination method: 4x=5y+24 5x=4y+21

  2. Math

    Solve by eliminnation methods 2x-4y=5 2x-4y=6 solve the system by elimination method 5x+2y= -13 7x-3y=17 Solve x+64 Determine whether the given numbers are solutions of the inequality 8,-10,-18,-3 y-8>2y-3 Solve by the

  3. MaTh = Algebra = help

    Solve this system of linear equaiton by an algebraic method. So If I had to solve this the elimination method way, how would I do it? x-2y = 10 3x-y = 0

  4. algebra

    Solve by using the elimination method. 7x-8y=-20 8x+7y=74

  1. Algebra

    Solving system of linear equations by using the apropiate method name the method and the x,y coordinates 1)X=4y+8 2x-8y=-3 2)3x-7y=6 elimination method 2x+7y=4 (2,0) 3)5x-2y=12 elimination method 3x-2y=-2 (7,23/2) 4)9x-8y=42

  2. maths

    1.solve the set of linear equation by matrix method.a+3b+2c=3,2a-b-3c=-8,5a+2b+c=9 solve for a,b,c 2.solve by Guassian elimination method, (a)a+2b+3c=5,3a-b+2c=8,4a-6b-4c=-2, (b)

  3. math

    Can someone please check my work? Solve using substitution method 1. 3x+2y=12 x=52-6y answer:-40.8 I am pretty sure that one is wrong. Solve using elimination method 2. 2r-7s=-31 7r+2s=24 answer: (230/53,-468/53) 3.3x+4y=3 6x+8y=6

  4. Algebra

    solve by elimination method 5x+2y=-13, 7x-3y=17

You can view more similar questions or ask a new question.