A community for students.

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

anonymous

  • one year ago

Please, please, please help! I need help with 2 questions. I'll fan/medal. ------ A system of equations is given below: y = 3x + 4 2x + 3y = 10 Which of the following steps could be used to solve by substitution? 3x + 4 = 2x + 3y 2x + 3(3x + 4) = 10 2(3x + 4) + 3y = 10 3(y = 3x + 4) ----- A set of equations is given below: Equation S: y = x + 9 Equation T: y = 2x + 1 Which of the following steps can be used to find the solution to the set of equations? x = 2x + 1 x + 9 = 2x x + 1 = 2x + 9 x + 9 = 2x + 1

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

    1) When using susbstion its best to use it if it tells you that a varible equals something y = 3x + 4 2x + 3y = 10 In this case it is a given that y equals something so we use that information and plug it into the 2nd equation like this \(\huge\rm\color{black}{2x + 3(3x+4)=10}\)

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

    It erased my work here is what i had typed http://prntscr.com/7qa7fu

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

    That should take care of #1

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

    Try #2 by yourself let me know what you get

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

    @Moe95 Okay so since #2 tells us what y equals on both equations, shouldn't I combine the two equations? Or do I try for x?

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

    @Moe95 And thank you btw

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

    You are welcome and yes! Thats exactly what you do! So the answer is......*drum rolls* ...

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

    @Moe95 The answer for #2 is D ? :D

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

    yes! :D Good job! :)

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

    @Moe95 Thank you so much for helping me!

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

    No problem! :)

  12. 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.