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

Raja99 Group Title

Solve: x+y+z=561.5; 3.35y+5.6z=373; 5.6x+2.25y=2769.9; 3.35x+2.25z=1505.66 Pl find x,y and z.

  • one year ago
  • one year ago

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

    what grade u in? ahhh this is hard...sorry this isnt much help.

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

    are these al lthe same values for x,y, and z? IS this vectors (i don't remember vectors well)?

    • one year ago
  3. Raja99 Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    ya

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

    both?

    • one year ago
  5. Raja99 Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    linear equations

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

    Make x the subjext for the last equation and y the subject for the second equation. Then sub those into the first equation.

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

    YOu will get everything in z for the first equation once you do what I told you.

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

    why not rearrange 1 of the equations that has 3 variables, and then substitute in another equation with 2 variables?

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

    Then you can solve for z and finally you can find y. and then x at the end.

    • one year ago
  10. Raja99 Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    i tried all equations are coming same

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

    well ,azteck's got this one covered.

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

    \[3.35x+2.25z=1505.66\] \[3.35x=1505.66-2.25z\] \[x=449.45 -\frac{45}{67}z\]

    • one year ago
  13. Raja99 Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    ok

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

    Do the same thing for the second equaiton but in the second equation, make y the subject.

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

    I got to go somewhere. Toodles. Good luck with that.

    • one year ago
  16. Raja99 Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    thanks

    • 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.