Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

SephI

  • 3 years ago

Alright, guys, I'm confused. J + S = 150 2J + 3.5S = 405 Solving for J

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

    you have 2 methods : elimination, substitution. which one u wanna use ?

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

    I thought, S = 150 - J <-- sub 2J + 3.5(150 - J) = 405 2J + 525 - 3.5J = 405 -1.5J = -120 J = 80, is that right?

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

    yes, correct.

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

    any doubts

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

    No doubts.

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

    good :)

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

    @hartnn , got a question. If I had, 2x + y = 3, and I wanted to put in y = mx + b I would say: y = 2x + 3, or would the 2x be negative because I switched it's side?

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

    since u switched side its -2x

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

    a better way to explain that is 2x+y=3 subtracting 2x from both sides 2x-2x+y= -2x +3 i subtracted because we need to do inverse operation, since 2x was added to y, to isolate y, you subtract it.

  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