A community for students.

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

anonymous

  • one year ago

Could someone help me? I'm not sure at what I did wrong

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

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

    the middle step should not have an "x" in it for the amount of copper it should read 0.3*400 (which is 120)

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

    sorry i got 'cut off' x = amount of 10% alloy so amount of copper in this = 0.10x grams your error in in the second line the amount of copper in the 30% alloy is 0.30(400) not 0.30x(400)

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

    do you follow that ok?

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

    Is the .20(x+400) correct. I understand what I did wrong @welshfella

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

    yes that is correct so the equation will be the sum of the first 2 amounts of copper = 0.20(x + 400)

  7. 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.