A community for students.

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

anonymous

  • one year ago

Solve the inequality: 1-4|n+2|<-23

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

    Would i subtract 1 to the other side or subtract it with 4 first?

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

    the -4 is being multiply to |n+2| so u cant subtract 1frm the -4.... however you can subtract 1 frm both sides of the inequality to get -4|n+2|<-23-1

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

    But i'm supposed to isolate the absolute value first.

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

    Would i divide -4?

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

    after that we can divide both sides by -4

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

    wat do we get?

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

    n+2< -24/4 -> n+2<-6

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

    then we subtract 2 with -6 so n<-4 right?

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

    what? |n+2|<-24/4 |n+2|<6 we now get rid of the absolute value be spliting the inequality ... making 1positive and 1negative ..like this (n+2)<6 and (n+2)<-6 we now solve for n

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

    that shd be -24/-4 ** (error +4)

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

    so n+2<6 n<6-2 and n+2<-6 n<-6-2

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

    Oh i see what you did :O so n<-4 and n<-8. How would this be graphed?

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

    oh whoops i put -4 instead of 4

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

    |dw:1441506827688:dw|

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

    n>4 and n<-8

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

    |dw:1441506974345:dw|more like this^^

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

    This is kind of different to what my teacher taught... Example: 3|b+8|-10<5 then make a negative equation: -3|b+8|-10>5 +10 +10 (signs are switched) +10 +10 ----------- ----------- 3|b+8|<15 -3|b+8|>15 ---------- ----------- 3 -3 b+8<5 b+8>-5 -8 -8 -8 -8 ------- ----------- b<-3 b>-13

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

    |dw:1441500150377:dw|

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

    Oh :P should have saw what you typed before what i typed. I see, thanks for the help though.

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

    yes it shd be n+2>6 and n+2<-6 i made and error not switching the first sign shd be n+2>6 n>4 and n<-8

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

    So how would you make 1-4|n+2|<-23 into a positive?

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

    im not sure i understand what ur asking...?

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

    like my example

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

    There is an error in the example the 2nd equation should have been 5 instead of -5 to be equaled to -15 when adding -10.

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

    *should have been -5 instead of 5

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

    no its correct

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

    Alright then :D Thanks for the help.

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

    -3|b+8|-10>5 then we add 10 to bot sides we get -3|b+8|>5+10

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

    we then divide both sides by -3 to get |b+8|>10/-3

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

    10+5 = 15

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

    yes correct tpye error

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

    |b+8|>15/-3

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

    It's fine you don't have to say anymore i understand what you mean. Thanks for the time to help me @LynFran :)

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

    ok welcome

  35. 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.