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

mathstahp Group Title

Need help with finding four numbers! (Problem in comments)

  • one year ago
  • one year ago

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

    Suppose you have four numbers (call them a,b,c,d). They have the following characteristics: a is a perfect cube b is a perfect square c is divisible by 10 d is ONLY divisible by 5 They are also related in the following ways: \[c-a=4+b\] \[d/c = (a-(d-51)/a-(c-69))\] \[bc-ad = 2165\] \[-5(d-3a) = 80\] What is a, b, c, and d?

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

    Oh, and just so it doesn't cause any confusion, the second equation can also be written as: \[d/c = (a-(d-51)\div(a-(c-69))\]

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

    well i'm doing some calculations...but i think one thing i know is that d is 5?

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

    how did you get d=5, joshi? I would just like to know how to start dealing with all of these.

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

    oh wait never mind what i said about d. from c-a=4+b, i got c=4+b+a and i cross multiplied the second equation. and substituted c for 4+b+a that's what i have until now

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

    Bahh...I'm just gonna give up on this stupid problem. Thanks for your help, though.

    • one year ago
  7. joshi Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    aw nooo well do you know the actual answer though? i'm going to finish this anyway, you're welcome

    • 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.