Quantcast

A community for students.

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

MeowKate

  • 2 years ago

Can someone check my answer For what interval does this quadratic inequality hold ture? x^2−4x−4≤28 A.[2,6] B. [-4,8] C. [-1,2] D. [-2,6] E. [0,4]

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

    will it be b?

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

    solve x^2 - 4x - 32 <=0 for x (x -8)(x + 4) <= 0 between x = -4 and x = 8, the inequality is true for x < -4, the left side exceeds 28 for x > 8, the left side exceeds 28

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

    ??

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

    @tkhunny

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

    The interval is -4<=x<=8

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

    |dw:1361409569193:dw|

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

    Plug the numbers of the interval betwenn -4<=x<=8 in the equation above.

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

    @MeowKate > will it be b? CORRECT

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

    The option "B" is the correct one.

  10. 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.