A community for students.

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

anonymous

  • 5 years ago

5x + 2y = 8 x + y = 4 If you want to solve the system of equations by addition, which of the following could you do? a)Multiply the second equation by 5 and add. b)Multiply the second equation by 2 and add. c)Multiply the second equation by -2 and add.

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

    If you're having trouble with a problem like this I'd try a process of elimination. Try the methods outlined in all 3 answers

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

    to see which one would make a variable drop out thus allowing you to solve for the other variable

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

    In this case, one of those methods will make the y-terms in the 2 equations add to 0

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

    The correct answer is C, but you should try to figure out why.

  5. 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.