A community for students.

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

anonymous

  • one year ago

What is the solved systems of equations 3x+4y=16 -4x-3y=-19

  • This Question is Open
  1. pooja195
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    Use elimintation

  2. pooja195
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    4 (3x+4y=16) -4x-3y=-19 Opposites cancel distribute \[\huge~4 (3x+4y=16)\]

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

    okay um here is the link for the first one http://www.geteasysolution.com/3x-4y=-16 and i think it will do the second one too

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

    its a calculator it even shows you the work it out

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

    just put add on it i know it says -

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

    @puppylife101 You have missed the point that this is a SYSTEM of equations your calculator simply re-arranges one equation - but leaves both variables (x and y) in the answer Since BOTH the equations are true together then you can solve BOTH variables from the system

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

    okay just helping maybe on the wrong topic opps

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

    I'm still confused on what the final x and y values would be

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

    to use the method called 'elimination' you need to get 2 equations that have one of the variables with the multiplier - e.g. BITH equations have 4x in them (for instance). To do that in THIS system I suggest this method: multiply the first equation by 4 (that will give you a term with 12x) multiply the second equation by 3 (that will give you an equation with -12x) then ADD those 2 equations and the 12x will disappear and you will have an equation with just y in it (and constants) You can then solve that equation for y If you have not seen the 'elimination method' then you should look at your text, or ask your class or study online. It is one of the basic methods for solving questions like this

  10. 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.