A community for students.

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

anonymous

  • one year ago

If a = -7, what is 3-2(4+a)³ ?

  • This Question is Closed
  1. Nnesha
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 2

    substitute a for -7

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

    Yeah I did that

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

    so what did you get ?

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

    Do I have to add what's inside the parenthesis when I substitute the -7 in ? @Nnesha

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

    yes right PEMDAs rule first solve whats in the parentheses and then take cube

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

    Kk

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

    Okay so I did that and I got -3

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

    is it 3-2 front of the parentheses ?

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

    4-7=-3 (-3)^3 <--solve that

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

    Wait no the 3-2 is not in the parenthesis its on the outside to the left

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

    Okay so I solved -3³ and I got +27

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

    @Nnesha

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

    no don't forget the parentheses it's (-3)^3 not -3^3

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

    Yeah the exponent

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

    I already solved it

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

    what did you get ?

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

    I got 27 when I solved (-3³) then I subtracted 3-2 which was on the left so now I got 28 I'm not sure if its correct

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

    no

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

    \[\huge\rm 3-2(4+a)^3\] substitute a for -7 \[\huge\rm 3-2(4+(-7))^3\] \[\huge\rm 3-2(-3)^3\] it is (-3) to the 3rd power not -(3^3) totally different

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

    (-3)^3= -3 times -3 times -3 -3^3=-3 times 3 times 3 sign difference

  21. madhu.mukherjee.946
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    i guess the answer is 57

  22. madhu.mukherjee.946
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    coz 3-2(-3)^3 3-2(-27) 3+54 57

  23. madhu.mukherjee.946
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    @Nnesha am i correct?

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

    You already know.

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

    Wait so I dont have to subract 3-2 ?

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

    Wait never mind I got it !! :) thanks @Nnesha & @madhu.mukherjee.946

  27. madhu.mukherjee.946
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    no

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

    np

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

    Can you help me with one more problem ?

  30. madhu.mukherjee.946
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    say

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

    @madhu.mukherjee.946 I'm done with math for today my brain hurts 😞 tomorrow I'll finish them

  32. madhu.mukherjee.946
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    okay:)

  33. 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.