Need algebra help with: what are dimensions of this rectangle in centimeters?

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wrferlrf9

Mathematics

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Explanation & Answer

hello

perimeter = 2( length + width)

     42      = 2 (x+4 +2x-7)

      42     = 2( 3x -3 )

     42/2  =  3x-3

      21   = 3x-3

      21+3= 3x

        24 = 3x

         x = 24/3

         x= 8..


length = x+4 = 8+4 = 12................................answer

width = 2x-7 = 2*8 - 7 =9..............................answer



answer is

J.length= 12  and width = 9




hope you understood..please message if you have any doubts...thank you


Anonymous
This is great! Exactly what I wanted.

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