A community for students.

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

anonymous

  • 5 years ago

confused on this one because if i multiply the first equation by 2, it cancels out both the x and y components. Solve by the elimination method. 2x + 3y =1 4x + 6y = 2

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

    that is okay but you need to multiply first equation by -2

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

    sorry about that...you will get 0=0 which is always true so infinitely many or all real numbers as solution

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

    ok, that is the first time i saw the answer come out like that, thanks!

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

    you're welcome....good job on elimination...you may also get something like -2=0 which is never true so NO SOLUTION

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

    so which would it be, infinitely many solutions or no solution?

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

    no solution is a different type-when left side doesn't equal right side INFINETLY MANY/ALL real numbers mean same things

  7. radar
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    You have what is known as an identity.

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

    exactly radar

  9. radar
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    I hope the course that ms elegant prepared for such an event lol

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

    can you help me with polynomial question Find polynomial P(n)=Sn for 1, 2, 3, ...10 and explain method

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

    so the answer i get when multiplying by -2 is 0=-2. so I'm guessing that the answer is there is no solution. but how do i perform a check to make sure that my answer is right?

  12. radar
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    It is unsolvable,it is an identity, it is the same equation just one is double the other you need two distinct equations for the two unknowns.

  13. radar
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    btm2011, I wouldn't be much help on that polymonial series!

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

    ok, so there is no solution, thx!

  15. radar
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Ms elegant do you understand even though they provided you with two equations, they are actually the same, one does not provide any new information for you.

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

    for that problem the answer is all real numbers, infinitely many (identity) because 0=0 -2(2x+3y=1)____-4y-6y=-2

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

    -4y-6y=-2 + 4x+6y=2

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

    There is a solution!

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

    ok i think i got it, there is a solution, but it is just an infinite amount of solutions that can be the answer, right?

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

    YES...bc every number equals itself

  21. radar
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    yes, x=0 and y=1/3 could be a solution, but there is no specific solution, I could put down another solution like x=-2, y=1

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

    ok, i get it. and that's the check, that several answers fit this equation - so there are infinite solutions, not just one

  23. radar
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    That is what it seems to be.

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

    ok great thx! i appreciate the explanation so that i could understand what i was doing

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

    GREAT!

  26. 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.