Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

rambo2210

  • 3 years ago

If r = 5 z then 15 z = 3 y, then r = (A) y (B) 2 y (C) 5 y (D) 10 y

  • This Question is Closed
  1. nphuongsun93
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    r = 5z ?r = 15z ?r = 15z = 3y

  2. rambo2210
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    please explain.

  3. rambo2210
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    @frx can you please solve this?

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

    One min..

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

    It's A. let me explain

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

    You got \[r=5z; 15 z=3y\]

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

    So what you wanna find is what r is in terms of y

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

    r=5z and 15z=3y so the conclution from that is that 5z is 1/3 of 15z, right?

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

    That means that r=5z=y

  10. rambo2210
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    so final answer is "A"?

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

    Another formulation: you know that 15z=3y and you want to find 5z

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

    Exactly

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

    Do you get it? :)

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

    You can also set it as an equationsystem

  15. rambo2210
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    yeap got it. thank you.

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

    np

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

    \[r=5z \] \[z=\frac{r}{ 5 }\] \[15z=3y\] \[15\frac{ r }{5 }=3y\] \[3r=3y\] \[r=y\]

  18. 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