document.write( "Question 21958: Cathy's yard is in the shape of a rectangle. The length is 5 m. more than three times the width of the rectangle. The area of the rectangle is 350 sq.m. Find the length and width of the rectangle. \n" ); document.write( "
Algebra.Com's Answer #10583 by Paul(988)\"\" \"About 
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width = x
\n" ); document.write( "lenght = 3x+5
\n" ); document.write( "area = 350
\n" ); document.write( "(x)(3x+5)=350
\n" ); document.write( "\"3x%5E2%2B5x=350\"
\n" ); document.write( "\"3x%5E2%2B5x-350=0\"
\n" ); document.write( "Use Quadratic Formula: \"x+=+%28-b+%2B-+sqrt%28+b%5E2-4%2Aa%2Ac+%29%29%2F%282%2Aa%29+\"
\n" ); document.write( "a=3, b=5, c=-350
\n" ); document.write( "\"x+=+%28-5+%2B-+sqrt%28+5%5E2-4%2A3%2A%28-350%29+%29%29%2F%282%2A3%29+\"
\n" ); document.write( "\"x+=+%28-5+%2B-+sqrt%28+25%2B4200%29+%29%29%2F%286%29+\" / divide by 6
\n" ); document.write( "\"x+=+%28-5+%2B-+sqrt%28+4225%29+%29%29%2F%286%29+\" / divide by 6
\n" ); document.write( "Add: x=10
\n" ); document.write( "3(10)+5=35
\n" ); document.write( "Hence, the width is 10cm and the length is 35cm\r
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