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math

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A rectangle has a perimeter of 120 cm.

Write the length of the rectangle as a function of its width.

  • math - ,

    2 L + 2 W = 120
    so
    L + W = 60
    so
    L = 60 - W

  • math - ,

    oh yea there's a second part of it. how do i find the range and domain.

    I got

    domain => x=R<60
    range => y=R<60

  • math - ,

    Neither can be negative !

  • math - ,

    hmm

    x=R; 0<x<60
    y=R; 0<x<60

    how's that

  • math - ,

    I like that better.

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