Quantcast

Got Homework?

Connect with other students for help. It's a free community.

  • across
    MIT Grad Student
    Online now
  • laura*
    Helped 1,000 students
    Online now
  • Hero
    College Math Guru
    Online now

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

0214

If f(x) = x − 4 and g(x) = 1 over 2x − 2, find f[g(−6)].

  • one year ago
  • one year ago

  • This Question is Closed
  1. bahrom7893
    Best Response
    You've already chosen the best response.
    Medals 1

    g(-6) = 1/(2*(-6)-2) = 1/(-12-2) = -1/14

    • one year ago
  2. bahrom7893
    Best Response
    You've already chosen the best response.
    Medals 1

    f [g(-6)] = f [ -1/14] = (-1/14) - 4

    • one year ago
  3. 0214
    Best Response
    You've already chosen the best response.
    Medals 0

    -4 isnt an option.

    • one year ago
  4. 0214
    Best Response
    You've already chosen the best response.
    Medals 0

    9 3 −9 −3

    • one year ago
  5. bahrom7893
    Best Response
    You've already chosen the best response.
    Medals 1

    Well did I say 4 is the answer? whatever -1/14 - 4 is.. wait

    • one year ago
  6. bahrom7893
    Best Response
    You've already chosen the best response.
    Medals 1

    By the way is it: |dw:1352646754665:dw|

    • one year ago
  7. 0214
    Best Response
    You've already chosen the best response.
    Medals 0

    first one

    • one year ago
  8. bahrom7893
    Best Response
    You've already chosen the best response.
    Medals 1

    oh, then scratch what i did before, and use parenthesis when you post the question

    • one year ago
  9. bahrom7893
    Best Response
    You've already chosen the best response.
    Medals 1

    f(g(-6)) = 1/[2*(-6)] - 2 = (-1/12) - 2 = (-1/12) + (-24/12) = -25/12

    • one year ago
  10. bahrom7893
    Best Response
    You've already chosen the best response.
    Medals 1

    wait that's just g(-6)

    • one year ago
  11. bahrom7893
    Best Response
    You've already chosen the best response.
    Medals 1

    now: f(g(-6)) = f(-25/12) = -25/12 - 4 = (-25 - 48)/12 = -73/12... i don't see where i'm going wrong.

    • one year ago
  12. bahrom7893
    Best Response
    You've already chosen the best response.
    Medals 1

    @UnkleRhaukus can u go over this real quick?

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

    all of it?

    • one year ago
  14. bahrom7893
    Best Response
    You've already chosen the best response.
    Medals 1

    lol i guess u can just solve the question, i don't see what i did wrong, because i am not getting any of his options

    • one year ago
  15. 0214
    Best Response
    You've already chosen the best response.
    Medals 0

    i sent them to you

    • one year ago
  16. 0214
    Best Response
    You've already chosen the best response.
    Medals 0

    9 3 −9 −3

    • one year ago
  17. bahrom7893
    Best Response
    You've already chosen the best response.
    Medals 1

    like i said, im not getting any of the options......

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

    \[g(x)=\frac1{2x}−2\] \[g(−6)=\frac1{2(-6)}−2=-\frac{1}{12}-2=\frac{-36}{12}=\color\gray{-3}\]

    • one year ago
  19. bahrom7893
    Best Response
    You've already chosen the best response.
    Medals 1

    unkle.... are you sure you added those right?

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

    hmm, no

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

    \[g(−6)=\frac1{2(-6)}−2=-\frac{1}{12}-\frac{24}{12}=\frac{-25}{12}\]

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

    \[f(-25/12)=-\frac{25}{12}-4=-\frac{25}{12}-\frac{48}{12}=-\frac{25+48}{12}\color\grey=\color{white}{\frac{-73}{12}}\]

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

    im getting what you are getting now bahrom

    • one year ago
  24. 0214
    Best Response
    You've already chosen the best response.
    Medals 0

    how about this one If f(x) = −2x − 4 and g(x) = x + 4, find (f over g)(−8).

    • one year ago
  25. 0214
    Best Response
    You've already chosen the best response.
    Medals 0

    options are −3 3 −1 1

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

    what do you mean by 'over'

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

    do you mean \(f\circ g\)

    • one year ago
  28. 0214
    Best Response
    You've already chosen the best response.
    Medals 0

    f/g

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

    f(x) = −2x − 4 g(x) = x + 4 (f / g)(x) = ( −2x − 4 ) / ( x + 4) (f / g)(−8) = ( −2(-8) − 4 ) / ( (-8) + 4)

    • one year ago
  30. 0214
    Best Response
    You've already chosen the best response.
    Medals 0

    wats the answer

    • one year ago
  31. 0214
    Best Response
    You've already chosen the best response.
    Medals 0

    ??

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

    ( −2(-8) − 4 ) / ( (-8) + 4) =( 16 − 4 ) / ( -4) =

    • one year ago
    • Attachments:

See more questions >>>

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.