document.write( "Question 916959: The area of a triangle is 70 square centimeters(cm^2). Find the length of the base and the altitude if the base is 13 cm longer than the altitude \n" ); document.write( "
Algebra.Com's Answer #556425 by lwsshak3(11628)\"\" \"About 
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The area of a triangle is 70 square centimeters(cm^2). Find the length of the base and the altitude if the base is 13 cm longer than the altitude
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\n" ); document.write( "let x=length of altitude
\n" ); document.write( "x+13=length of base
\n" ); document.write( "1/2*base*altitude=area of a triangle
\n" ); document.write( "1/2*(x+13)*x=70
\n" ); document.write( "1/2*(x^2+13x)=70
\n" ); document.write( "x^2+13x=140
\n" ); document.write( "x^2+13x-140=0
\n" ); document.write( "(x-7)(x+20)=0
\n" ); document.write( "x=7
\n" ); document.write( "x+13=20
\n" ); document.write( "length of altitude=7 cm
\n" ); document.write( "length of base=20 cm \n" ); document.write( "
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