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anonymous

  • one year ago

What is the solution to the rational equation ? **Medal/fan*

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  1. anonymous
    • one year ago
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    |dw:1437061349807:dw|

  2. anonymous
    • one year ago
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    @Study_together

  3. anonymous
    • one year ago
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    @Michele_Laino

  4. anonymous
    • one year ago
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    I got 15/7

  5. alekos
    • one year ago
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    Is the first fraction x/(x^2-4)?

  6. anonymous
    • one year ago
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    no it is x/(x^2-9) @alekos

  7. alekos
    • one year ago
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    ok give me a minute to check your answer

  8. anonymous
    • one year ago
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    ok:)

  9. alekos
    • one year ago
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    well done! that's correct

  10. anonymous
    • one year ago
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    yay! Will you check another?

  11. alekos
    • one year ago
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    yep!

  12. anonymous
    • one year ago
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    Dominique can ice cupcakes twice as fast as Houston. When they work together, Dominique and Houston can ice a large order of cupcakes in 5 hours. How many hours would it take Houston to ice them by himself?

  13. anonymous
    • one year ago
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    I got 13/2

  14. anonymous
    • one year ago
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    a. 13/2 b. 1 c. 4 d. 15/2

  15. alekos
    • one year ago
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    ok give me a sec

  16. anonymous
    • one year ago
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    kk

  17. alekos
    • one year ago
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    I dont get any of those choices?

  18. anonymous
    • one year ago
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    i posted them up there hold on.

  19. anonymous
    • one year ago
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    a. 13/2 b. 1 c. 4 d. 15/2

  20. alekos
    • one year ago
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    what i meant was that I dont get any of the choices you posted?

  21. anonymous
    • one year ago
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    oh! I know, I don't understand either.

  22. alekos
    • one year ago
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    could be a typo?

  23. anonymous
    • one year ago
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    |dw:1437062887584:dw|

  24. anonymous
    • one year ago
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    Solve for x and determine if the solution is extraneous or not.

  25. anonymous
    • one year ago
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    no, it's a dumb question. Can we do this one instead?

  26. anonymous
    • one year ago
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    I got 3, non-extraneous

  27. alekos
    • one year ago
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    with the previous question I think it should be "how long would it take dominique on his own" Then you would get one of those choices

  28. anonymous
    • one year ago
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    Ok. So for the previous question, i got 15/2 ?

  29. alekos
    • one year ago
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    Yep! thats it let me check the 3rd question

  30. anonymous
    • one year ago
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    kk

  31. alekos
    • one year ago
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    it is 3 but it would be classed as extraneous because if you substitute this in the original fractions you get zero on the bottom line

  32. anonymous
    • one year ago
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    Oh! Thanks:)

  33. anonymous
    • one year ago
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    |dw:1437063265629:dw|

  34. anonymous
    • one year ago
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    Last one because I have no idea how to solve this one but I got 1/3x

  35. alekos
    • one year ago
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    is that x^2 on the top and x^5 on the bottom?

  36. anonymous
    • one year ago
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    x^2 on the top and x^3 on the bottom

  37. alekos
    • one year ago
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    It goes like this \[\frac{ 1/x ^{2} }{3/x ^{3} } = \frac{ 1 }{ x ^{2} }.\frac{ x ^{3} }{ 3 }\]

  38. alekos
    • one year ago
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    can you do the rest?

  39. anonymous
    • one year ago
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    @alekos I got 1/3x

  40. anonymous
    • one year ago
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    x^3/3x^2

  41. alekos
    • one year ago
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    No. I'll go a bit further.......... \[= \frac{ x ^{3} }{ 3x ^{2}}\]

  42. alekos
    • one year ago
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    now what do you get?

  43. anonymous
    • one year ago
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    x/3x

  44. alekos
    • one year ago
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    here are the rules of exponents \[\frac{ x ^{a} }{ x ^{b} } = x ^{a-b}\]

  45. anonymous
    • one year ago
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    So then I assume it would be 3x

  46. alekos
    • one year ago
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    No, the three stays on the bottom line

  47. anonymous
    • one year ago
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    Then it would just be 3/x

  48. anonymous
    • one year ago
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    sorry, x/3

  49. alekos
    • one year ago
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    yeah thats it

  50. anonymous
    • one year ago
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    Yay! Thanks so much! <3

  51. alekos
    • one year ago
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    No problem. I enjoyed helping you out

  52. alekos
    • one year ago
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    you're a good student

  53. anonymous
    • one year ago
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    Thanks:)

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