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anonymous

  • 5 years ago

complete the ordered triple 3x+3y+z=1 x-3y+2z=19 8x-2y+3z=34 someone please help

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  1. amistre64
    • 5 years ago
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    whats this?

  2. amistre64
    • 5 years ago
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    you should be a pro by now ;)

  3. anonymous
    • 5 years ago
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    there u r, thought so cant figure out what i did wrong

  4. amistre64
    • 5 years ago
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    let me do this up in notepad and show you a better view of it....matrix style :)

  5. anonymous
    • 5 years ago
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    please

  6. anonymous
    • 5 years ago
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    r u still there doesnt usually take you this long

  7. amistre64
    • 5 years ago
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    z =-1324/23 is one of them, if I did it right :)

  8. amistre64
    • 5 years ago
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    does that sound right to you :)

  9. anonymous
    • 5 years ago
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    i have no idea i didnt do the fractions

  10. amistre64
    • 5 years ago
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    y = -5931/207

  11. amistre64
    • 5 years ago
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    its messy, but lets see if it works in the end :)

  12. anonymous
    • 5 years ago
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    i got x,y,z 2,-3,1

  13. amistre64
    • 5 years ago
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    x = 3324/69

  14. amistre64
    • 5 years ago
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    does it work what you got?

  15. anonymous
    • 5 years ago
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    and of course mathlab says its wrong

  16. anonymous
    • 5 years ago
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    dont know i hate fractions so i eliminate them

  17. amistre64
    • 5 years ago
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    :) i dont think you can get around it this time

  18. anonymous
    • 5 years ago
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    what happen to the superhero genious

  19. anonymous
    • 5 years ago
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    can we start from the begining and work the problem

  20. amistre64
    • 5 years ago
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    were gonna half to , i messed it up somewhere ;)

  21. anonymous
    • 5 years ago
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    ok ready when u r

  22. amistre64
    • 5 years ago
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    I got this so far :) and it looks about like what I had the last time...

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  23. anonymous
    • 5 years ago
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    its confusing its not at all what i got i was doing it the way we were earlier

  24. amistre64
    • 5 years ago
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    z = 4 :)

  25. amistre64
    • 5 years ago
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  26. anonymous
    • 5 years ago
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    -6x-6y-2z=-2 x-3y+2z=19 add them and u get -5x-9y=17

  27. amistre64
    • 5 years ago
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    yeah, then it gets messy :)

  28. amistre64
    • 5 years ago
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    y=-3, z=4

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  29. amistre64
    • 5 years ago
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    x=2 :) lets double check it ;)

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  30. amistre64
    • 5 years ago
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    it just formats better in notepad, and I dont get as lost :)

  31. anonymous
    • 5 years ago
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    -9x-9y-3z=-3 8x-2y+3z=34 add them and you get -x-11y=31

  32. anonymous
    • 5 years ago
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    -5x-9y=17 5x+55y=-155 add them together and get 46y=-138 y=-3

  33. amistre64
    • 5 years ago
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    3(2)+3(-3)+(4)=1 6 -9 +4 = 1 10-9=1...true (2)-3(-3)+2(4)=19 2 +9 +8=19 10+9=19.......true 8(2)-2(-3)+3(4)=34 16 +6+12=34 16 +18=34 .......true (x,y,z) (2 ,-3, 4)

  34. anonymous
    • 5 years ago
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    -x-11y=31 -x-11(-3)=31 -x-33=31 -x=-2 x=2

  35. amistre64
    • 5 years ago
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    you got it :) I did the substitution method....I dont get as many errors that way

  36. amistre64
    • 5 years ago
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    common "Z" ;)

  37. amistre64
    • 5 years ago
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    that didnt work as well as it did in my head :)

  38. amistre64
    • 5 years ago
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    you got 2 out of 3.... work the z.. work the z

  39. anonymous
    • 5 years ago
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    3x+3y+2=1 3(2)+3(-3)+z=1 6x+-9y+z=1 -3+z=1 z=4

  40. amistre64
    • 5 years ago
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    yay!!

  41. anonymous
    • 5 years ago
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    my math was off thats how i got z=-1

  42. amistre64
    • 5 years ago
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    lol..... my math was waaaayyyyyy off to begin with on this one :) BAD FINGERS!!!!

  43. anonymous
    • 5 years ago
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    i forgot how to add i guess

  44. amistre64
    • 5 years ago
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    hey, the cavemen lived without it... and we evolved ;)

  45. anonymous
    • 5 years ago
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    yeah i think people made up this stuff and had to make it confussing so no one could tell them it was wrong

  46. anonymous
    • 5 years ago
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    so when the variables change to a, b, c its the same just different letters

  47. amistre64
    • 5 years ago
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    yep.

  48. amistre64
    • 5 years ago
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    it dont matter what you name them, they are all just different variables in the end

  49. anonymous
    • 5 years ago
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    ok so 6a+3b+c=-20 a-3b+2c=-12 17a-2b+3c=-88

  50. amistre64
    • 5 years ago
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    work it out like you did the other one, and let see your moves lol

  51. anonymous
    • 5 years ago
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    -12a-6b-2c=40 a-3b+2c=-12 add them together get -11a-9b=28

  52. amistre64
    • 5 years ago
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    good so far...

  53. anonymous
    • 5 years ago
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    -18a-9b-3c=60 17a-2b+3c=-88 add them get -a-11b=-28

  54. amistre64
    • 5 years ago
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    -28?

  55. amistre64
    • 5 years ago
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    yeah.......

  56. amistre64
    • 5 years ago
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    -11a-9b=28 -a-11b=-28

  57. anonymous
    • 5 years ago
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    -11a-9b=28 11a+121=308 add them get 112b=336 112(3)=336 b=3

  58. amistre64
    • 5 years ago
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    b = 3, I agree

  59. anonymous
    • 5 years ago
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    -a-11b=-28 -a-11(3)=-28 -a-33b=-28 -a=-61 a=61

  60. anonymous
    • 5 years ago
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    is a right?

  61. amistre64
    • 5 years ago
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    -a -33 = -28 -a = -28+33 -a = 5 a = -5

  62. anonymous
    • 5 years ago
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    i got that the first time thought -61 was too high

  63. anonymous
    • 5 years ago
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    6a+3b+c=-20 6(5)+3(3)+c=-20 30+9+c=-20 c=-59

  64. amistre64
    • 5 years ago
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    c looks good :)

  65. amistre64
    • 5 years ago
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    double check your answers by plugging these values in your eqautions and see if they work

  66. anonymous
    • 5 years ago
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    mathlab says no

  67. amistre64
    • 5 years ago
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    not mathlab, the original equations :)

  68. anonymous
    • 5 years ago
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    i put my answers into mathlab it said they were wrong

  69. amistre64
    • 5 years ago
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    do you have the correct equations? no typos?

  70. anonymous
    • 5 years ago
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    a,b,c 5,3,-59

  71. anonymous
    • 5 years ago
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    c has got to b wrong

  72. amistre64
    • 5 years ago
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    6(5)+3(3)+(-59)=-20 30 +9 -59 = -20 39 - 59 = -20 -20 = -20 (5)-3(3)+2(-59)=-12 5 -9 -118 .....yeah :) 17a-2b+3c=-88

  73. anonymous
    • 5 years ago
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    equation 1 is the only won that ckecked out right

  74. amistre64
    • 5 years ago
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    -12a -6b -2c =40 a -3b +2c =-12 ------------------ -11a -9b = 28

  75. anonymous
    • 5 years ago
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    thats what i got so where did i go wrong

  76. amistre64
    • 5 years ago
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    (6a+3b+c=-20)-3 -18a -9b -3c = 60 17a -2b +3c =-88 ------------------ -a -11b =-28 ....good

  77. amistre64
    • 5 years ago
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    (-a -11b =-28 )-11 11a +121b = 308 -11a - 9b = 28 ------------------ 112b = 336 b = 3

  78. amistre64
    • 5 years ago
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    -11a - 9(3) = 28 -11a = 28+27 -11a = 55 a = -5

  79. amistre64
    • 5 years ago
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    -5 -3(3) +c =-12 -5-9 +c = -12 -14 + c = -12 c = -12+14 c = 2

  80. anonymous
    • 5 years ago
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    ok hold on thats way different then what i got

  81. amistre64
    • 5 years ago
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    6a+3b+c =-20 a-3b+2c =-12 17(-5)-2(-3)+3(2) =-88 -85 +6 +6 that aint working either....

  82. amistre64
    • 5 years ago
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    ow my brain hurts.....

  83. anonymous
    • 5 years ago
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    dont quit on me now

  84. amistre64
    • 5 years ago
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    do substitution......less error :)

  85. amistre64
    • 5 years ago
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    doing it on paper :)

  86. amistre64
    • 5 years ago
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    doing it on paper :)

  87. anonymous
    • 5 years ago
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    a=-5

  88. amistre64
    • 5 years ago
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    (a,b,c) (-5,3,1)

  89. anonymous
    • 5 years ago
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    yeah thats what i just got

  90. anonymous
    • 5 years ago
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    forgot to multiply by -1 to get a

  91. amistre64
    • 5 years ago
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    and I had it, but missed that "2"c....which threw me lol

  92. anonymous
    • 5 years ago
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    i still got 8 more and another page to do gonna b a long night for me

  93. amistre64
    • 5 years ago
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    :) post another question on the left if you need to, this ones a bit long :)

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