1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Help me in these questions

  1. Oct 23, 2009 #1
    hi

    help me in these questions

    I want to explain the solution to these questions

    How do we get the result ???
     

    Attached Files:

  2. jcsd
  3. Oct 23, 2009 #2
    Your attachment may take a while to get 'approval'. Perhaps post the question in text
     
  4. Oct 23, 2009 #3

    HallsofIvy

    User Avatar
    Staff Emeritus
    Science Advisor

    It's pretty much basic algebra. The first equation is y= 3- 2/x and I guess the problem is to solve for x. First subtract 3 from both sides: y- 3= -2/x. Divide both sides by -2 to get (y- 3)/(-2)= 1/x. Now take the reciprocal of both sides: -2x/(y- 3)= x.

    The second equation is y= (1/5) x. Okay, since x is divided by 5 and you want to solve for x, do the "opposite"- multiply both sides by 5: 5y= x.
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook




Similar Discussions: Help me in these questions
Loading...