Results 1 to 2 of 2

Math Help - geometry problem

  1. #1
    Junior Member
    Joined
    Jun 2007
    Posts
    37

    geometry problem

    the area of a rectangle of legthx is given by 3x^(2) + 5x. find the width of the rectangle
    Is this set up correct?
    2x+2(3x^(2) +5x)= perimeter
    Follow Math Help Forum on Facebook and Google+

  2. #2
    MHF Contributor red_dog's Avatar
    Joined
    Jun 2007
    From
    Medgidia, Romania
    Posts
    1,245
    Thanks
    1
    No!
    Let y be the width. Then the area is xy.
    We have xy=3x^2+5x\Leftrightarrow xy=x(3x+5)\Leftrightarrow y=3x+5
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. Geometry problem help!?!
    Posted in the Geometry Forum
    Replies: 2
    Last Post: March 6th 2010, 08:34 PM
  2. Replies: 2
    Last Post: January 10th 2009, 05:49 AM
  3. geometry problem
    Posted in the Geometry Forum
    Replies: 3
    Last Post: January 5th 2009, 02:01 PM
  4. Geometry problem
    Posted in the Geometry Forum
    Replies: 1
    Last Post: December 13th 2008, 05:40 PM
  5. help this geometry problem
    Posted in the Geometry Forum
    Replies: 2
    Last Post: March 26th 2008, 03:10 PM

Search Tags


/mathhelpforum @mathhelpforum