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anonymous

  • one year ago

Solve the system algebraically. Check your work. 5x + 2y = 10 3x + 2y = 6

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  1. arindameducationusc
    • one year ago
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    i m here

  2. anonymous
    • one year ago
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    x=2 y=0

  3. UsukiDoll
    • one year ago
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    the y's seems to be the same so we can distribute a negative sign all over one equation and use elimination method to solve for x.

  4. UsukiDoll
    • one year ago
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    @saseal please don't give direct answers as it's a violation of OpenStudy's Code of Conduct.

  5. anonymous
    • one year ago
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    oh ok..

  6. anonymous
    • one year ago
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    Try using matrix method. It works everytime.

  7. arindameducationusc
    • one year ago
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    Check this

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  8. UsukiDoll
    • one year ago
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    for some reason matrix method is taught way later :(

  9. anonymous
    • one year ago
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    Yea, they are saving the best for the last lol.

  10. arindameducationusc
    • one year ago
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    x John can find out now, what say guys?

  11. UsukiDoll
    • one year ago
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    ?

  12. arindameducationusc
    • one year ago
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    Y is in the solution I gave, now x he can easily find out by putting in the equation

  13. arindameducationusc
    • one year ago
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  14. UsukiDoll
    • one year ago
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    oh XD

  15. anonymous
    • one year ago
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    \[A=\left[\begin{matrix}5 & 2 \\ 3 & 2\end{matrix}\right]\] \[B = \left(\begin{matrix}x \\ y\end{matrix}\right)\] \[C = \left(\begin{matrix}10 \\ 6\end{matrix}\right)\] \[A ^{-1} = \left[\begin{matrix}0.5 & -0.5 \\ -0.75 & 1.25\end{matrix}\right]\] \[A ^{-1}C = B = \left[\begin{matrix}0.5 & -0.5 \\ -0.75 & 1.25\end{matrix}\right] \left(\begin{matrix}10 \\ 6\end{matrix}\right) = Find out yourself :)\]

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