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

onegirl

Simplify the numerator. You should get just 13. Show your work. f'(x) = 3(5x + 1) + -5(3x - 2) over (5x + 1)^2

  • one year ago
  • one year ago

  • This Question is Closed
  1. onegirl
    Best Response
    You've already chosen the best response.
    Medals 0

    @Mertsj can u help?

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

    @tcarroll010 can u help?

    • one year ago
  3. tcarroll010
    Best Response
    You've already chosen the best response.
    Medals 1

    Use the distributive property on: 3(5x + 1) + -5(3x - 2) Which is your numerator. a(c + d) = ac + ad You will get 2 terms that will cancel and 2 other terms that can be combined.

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

    okay can u show it?

    • one year ago
  5. tcarroll010
    Best Response
    You've already chosen the best response.
    Medals 1

    That is now for you to show it. You should show your work now instead of me because that is sufficient help for you to at least start to try to solve it. Go ahead now. It's your problem so take ownership and do some work.

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

    okay

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

    let me try

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

    so for the first i got 15x + 3

    • one year ago
  9. tcarroll010
    Best Response
    You've already chosen the best response.
    Medals 1

    That is good so far. So continue.

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

    ok so i gto 15x + 3 + -5x + 10 what do i do next?

    • one year ago
  11. tcarroll010
    Best Response
    You've already chosen the best response.
    Medals 1

    You did well on the first half, but: -5(3x - 2) is not equal to -5x + 10 the "10" is right but concentrate on the "-5x". That is where you went wrong a little bit.

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

    okay

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

    so its 15x + 10 right?

    • one year ago
  14. tcarroll010
    Best Response
    You've already chosen the best response.
    Medals 1

    You have -5 times 3x There is a negative sign involved. Always check your signs.

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

    so -15x + 10

    • one year ago
  16. tcarroll010
    Best Response
    You've already chosen the best response.
    Medals 1

    Yes. So, your numerator is : 15x + 3 + -15x + 10 so far. So now, 2 of the terms will cancel and the other 2 can be combined.

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

    ok so -15x and 15x will cancel and we will combine 10 and 3 to get 13 :)

    • one year ago
  18. tcarroll010
    Best Response
    You've already chosen the best response.
    Medals 1

    You got it! Great job! :-)

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

    thanks!

    • one year ago
  20. tcarroll010
    Best Response
    You've already chosen the best response.
    Medals 1

    uw! Thanks for the recognition! Good luck in all of your studies! @onegirl

    • 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.