A community for students.

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

anonymous

  • one year ago

Help!

  • This Question is Closed
  1. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    1/3x+ 1/3 (2x-15) =3 1/2

  2. Jhannybean
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    That's much better.

  3. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    @Emeyluv99

  4. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    now where were we.

  5. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    $$(3(2x-15) 1 + (3(2x-15)) (3x) \frac{1}{(3(2x-15))} = (3(2x-15)) (3x) \frac{7}{2}$$

  6. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    At the second denominator.

  7. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    yes, so when we multiply by the second denominator, we get ^^ that mess up there

  8. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    so lets simplify the second equation when the (3(2x-15)) cancels itself out

  9. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    $$(3(2x-15)) 1 + (3x) 1 = (3(2x-15)) (3x) \frac{7}{2}$$

  10. Jhannybean
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Original question: \[\sf \frac{1}{3x}+\frac{1}{3(2x-15)}=\frac{7}{2}\]

  11. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    @Emeyluv99

  12. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    oh my, it does

  13. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    it'll be worth it in the end! lets finish off the last denominator! 2!

  14. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    1 Attachment
  15. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    $$2(3(2x−15))1+2(3x)1=2(3(2x−15))(3x) \frac{7}{2}$$

  16. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Nice anime pic x'3

  17. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    that pic is awesome by the way

  18. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Mys is loves drawing like you and ok.

  19. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    my sis*

  20. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    so simplify the problem out: 6(2x-15) + 6x = 9x(3x-15)

  21. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Wait, I thought x's were out?

  22. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    no not yet, because we had to multiply by the denominators and the denominators had x's in them

  23. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    its our job now to get rid of them.

  24. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    and its quite easy too, no calculator required! watch!

  25. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    6(2x-15) + 6x = 9x(2x-15) 6(2x-15) - 9x(2x-15) = -6x <- I just switched the places of 9x(2x-15) and 6x, because now i can use the ax+bx = (a+b) x rule.

  26. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Following so far.

  27. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Can we eliminate x's now?

  28. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    so that would give you (2x-15)(6-9x) = -6x

  29. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    to basically, what we have now on the left side is a factored quadratic.

  30. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    To baically? What?

  31. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    sorry, SO, we have a factored quadratic on the left. which equates to -6x.

  32. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    K.

  33. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    what you have to do now is expand the quadratic on the left which will give you $$147x-18x^2-90=-6x$$

  34. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    then you get rid of -6x by adding 6x to both sides: $$147x-12x^2-90=0$$

  35. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    then you factor it again. ...

  36. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Session expired. :( It's OK though, you have some physics right? :)

  37. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    ugh hang on, we mustve done somehting wrong... im getting radicals

  38. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    ill get back to you later, i have some homework to do... is that ok?

  39. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    It's fine. I could try to help if you want.

  40. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    im writing a lab up so its fine... thanks tho!

  41. Not the answer you are looking for?
    Search for more explanations.

    • Attachments:

Ask your own question

Sign Up
Find more explanations on OpenStudy
Privacy Policy

Your question is ready. Sign up for free to start getting answers.

spraguer (Moderator)
5 → View Detailed Profile

is replying to Can someone tell me what button the professor is hitting...

23

  • Teamwork 19 Teammate
  • Problem Solving 19 Hero
  • You have blocked this person.
  • ✔ You're a fan Checking fan status...

Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.

This is the testimonial you wrote.
You haven't written a testimonial for Owlfred.