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anonymous

  • one year ago

HELP! lol

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  1. anonymous
    • one year ago
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    wait up

  2. anonymous
    • one year ago
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  3. anonymous
    • one year ago
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    OKIE HELP :C

  4. Haseeb96
    • one year ago
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    you can solve it by using carmer's rule

  5. anonymous
    • one year ago
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    ?

  6. anikhalder
    • one year ago
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    We have the 3 equations. Subtract eq 3 from eq 2 and solve for y. After you get y plug it into eq 1 and you will get an equation in x and z. Now solve that equation and eq 3 and you will find x and z. (Simultaneous equations)

  7. anonymous
    • one year ago
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    i need to solve using matrixes x.x

  8. anonymous
    • one year ago
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    i mean substitution and elimination are easy methods but matrixes are confusing :(

  9. anikhalder
    • one year ago
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    Do you know about Gauss' elimination?

  10. anonymous
    • one year ago
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    eh no

  11. anonymous
    • one year ago
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    if its related to matrixes maybe

  12. anikhalder
    • one year ago
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    Gaussian elimination is to do with matrices

  13. anikhalder
    • one year ago
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    From Google: You can perform three operations on matrices in order to eliminate variables in a system of linear equations: You can multiply any row by a constant (other than zero). multiplies row three by –2 to give you a new row three. You can switch any two rows. swaps rows one and two. You can add two rows together.

  14. anonymous
    • one year ago
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    x.x thats different I'm solving for x and y and z using matrixes not finding the discriminant

  15. anikhalder
    • one year ago
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    http://www.dummies.com/how-to/content/how-to-use-gaussian-elimination-to-solve-systems-o.html Have a quick look into this and see if this is what you want or not.

  16. anonymous
    • one year ago
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    ok

  17. anonymous
    • one year ago
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    no i won't help :C

  18. anonymous
    • one year ago
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    :(

  19. anikhalder
    • one year ago
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    I'm sorry my friend, Gaussian elimination is the way that's coming to my mind in order to solve the system of equations using matrices. It's a very powerful technique and I would highly recommend you to go through this video on Khan Academy: https://www.khanacademy.org/math/precalculus/precalc-matrices/matrix-equations/v/matrix-equations-systems

  20. anonymous
    • one year ago
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    okie

  21. anonymous
    • one year ago
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    :C i don't get it I'm doomed

  22. anonymous
    • one year ago
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    wait in my book it tells me to use a graphing calculator

  23. anonymous
    • one year ago
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    how do i even type this into a graphing calculator

  24. anikhalder
    • one year ago
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    I'll be honest with you. It's a shame, I know, but I never used a graphing calculator. I always tried to graph by hand and used a simple fx calculator in order to go about. I found this article, I do not know whether it will be of any help. But you might want to go through it: http://mathbits.com/MathBits/TISection/Algebra1/systems.htm

  25. anonymous
    • one year ago
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    x.x okie thnx

  26. anikhalder
    • one year ago
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    Sorry, couldn't be of any help.

  27. anonymous
    • one year ago
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    its okie have a meal fur effort xD

  28. anikhalder
    • one year ago
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    I really appreciate it. Thank you. But it's really important that you know how to tackle these questions than me getting a medal. And I'd suggest once again, when you get time, go through Gaussian elimination. :)))

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