A community for students.

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

anonymous

  • 5 years ago

need to use interval notation to indicate the domain!

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

    f(x)=\[f(x)=\sqrt{-7x+2.5}\]

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

    ignore the first f(x) at the top..

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

    well your value of x has to make sure that what's under the root isn't negative. So, -7x +2.5 > or = to 0. So, 7x > or = to 2.5, x>= 2.5/7. so, I'd say [5/14, + infinity)

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

    wait what I said doesn't make sense

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

    it says to round any decimals to two decimal places. Thanks! Since this is an online assignment I want to make sure to type it in correctly.

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

    ha. I don't understand this section well so I didn't catch any errors.. hmm

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

    it has to be smaller than 5/14, not greater. Forgot to change the sign when I multiplied by -1

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

    0.36 is 5/14 rounded to 2 decimals

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

    sorry about the mistake before

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

    so 0.36 should be the answer? or .36? this online thing is really picky about correct format.

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

    interval notation would be (-infinity, 0.36]

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

    I don't think I can type infinity. is there a sign for that or something?

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

    Sorry I'm so clueless.. and thanks for your help. I appreciate it!

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

    \[\infty\] is the sign for infinity, just add a - in front of it for the negative. No Problem!

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

    I realized that after I asked. Thanks!

  16. 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.