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anonymous

  • one year ago

Will fan and medal Use a graphing calculator or spreadsheet software to solve 4x + y + z = 1 8x – 4y – 7z = 2 5y + 9z = 3 using matrices A. (0.5, -3, 2) B. (1, 2, 3) C. (-3, 0.5, 2) D. (0.5, 3, 2)

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  1. IrishBoy123
    • one year ago
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    these are 3 planes, yep: \(4x + y + z = 1 \\ 8x – 4y – 7z = 25 \\ 0 x + y + 9z = 3\) any idea what the "answer" means ? :p

  2. anonymous
    • one year ago
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    Don't you solve for x, y, and z?

  3. anonymous
    • one year ago
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    what grade is this?

  4. anonymous
    • one year ago
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    @pokamons

  5. anonymous
    • one year ago
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    It's algebra 2

  6. anonymous
    • one year ago
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    im in geometry but i can try

  7. anonymous
    • one year ago
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    oka

  8. anonymous
    • one year ago
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    im sorrry, idk this :(

  9. anonymous
    • one year ago
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    Hey it's all good. I don't know this either.

  10. anonymous
    • one year ago
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    But thanks for trying anyway

  11. IrishBoy123
    • one year ago
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    I think you are supposed to do something like this: +++++++++++++++++ import numpy as np a = np.array( [ [4,1,1], [8,-4,-7], [0,5,9] ] ) b = np.array([1,2,3]) x = np.linalg.solve(a, b) print x +++++++++++++++++ Connected to pydev debugger (build 141.1899) [ 0.5 -3. 2. ] it says: "graphing calculator or spreadsheet software "

  12. IrishBoy123
    • one year ago
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    it certainly assumes some knowledge if that is lacking, we can have a crack at solving just 2 of them: \(4x + y + z = 1; \\ 8x – 4y – 7z = 2\)

  13. IrishBoy123
    • one year ago
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    or these: \(8x – 4y – 7z = 2 \\ 5y + 9z = 3\)

  14. anonymous
    • one year ago
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    [0.5, -3, 2] is correct. I just guessed and got 100%

  15. IrishBoy123
    • one year ago
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    awesome, telepathic!!!

  16. anonymous
    • one year ago
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    Thank you for your help!

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