Quantcast

A community for students. Sign up today!

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

hugsandkisses

  • 2 years ago

Solve the equation for y. Then find the value of y for the given value of x. 3/5y-4x=3-2y; x=9

  • This Question is Closed
  1. purplec16
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    What is it that you don't understand?

  2. smarty
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    So you plug in the value of X and then you solve it. \[3/5y-36=3-2y\] \[13/5y=39 \]\[Multiply 5 \to each side\] \[13y=195\] \[y=195/13\] \[y = 15\]

  3. purplec16
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    Yup :). But I don't see what you did on your 2nd line... I really don't understand how you got that answer am getting something completely different your question is... \[\frac{3}{5y}-4x=3-2y\] right?

  4. purplec16
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    It ends up being a quadratic that has to be solved using the quadratic formula.

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

    Thanks!

  6. purplec16
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    \[\frac{3}{5y}-4(9)=3-2y\] \[\frac{3}{5y}-36=3-2y\] Add 36 to both sides \[\frac{3}{5y}=39-2y\] Multiply both sides by 5y \[3=(39-2y)5y\] \[3=195y-10y^2\] Put the equation in standard form \[0=-10y^2+195y-3\]

  7. purplec16
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    You do know how to use the quadratic formula right?

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

    Yeah

  9. purplec16
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    Okay let me know if you have any problems! and You're welcome

  10. Not the answer you are looking for?
    Search for more explanations.

    • Attachments:

Ask your own question

Ask a Question
Find more explanations on OpenStudy

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.