document.write( "Question 106679: Help me this ones wrecking my brain and is stressing me out!!!
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document.write( "The perimeter of a triangle ABC is 26m. BC is two thirds the length of AB and is 2m longer than ac. find the length of the sides. \n" );
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Algebra.Com's Answer #77636 by rcmcc(152) You can put this solution on YOUR website! To solve this question it is easier to make a set of simple equations.\r \n" ); document.write( "\n" ); document.write( "because perimeter is x+y+z we can make the equation\r \n" ); document.write( "\n" ); document.write( " \n" ); document.write( "now we can make equations for the other parts of the question \n" ); document.write( "because BC is \n" ); document.write( "\n" ); document.write( " \n" ); document.write( "\n" ); document.write( "now we can add on the other part of the equation. because BC is 2cm longer than AC we can derive the equation\r \n" ); document.write( "\n" ); document.write( " \n" ); document.write( "\n" ); document.write( "now you have the 3 equations below \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "the simplest way to solve is to substitute the 2 lower equations into the top equation in place of their respective variables. so you substitute (2/3)BC in place of AB in the top equation.\r \n" ); document.write( "\n" ); document.write( "you get\r \n" ); document.write( "\n" ); document.write( " \n" ); document.write( "simplify\r \n" ); document.write( "\n" ); document.write( " \n" ); document.write( "\n" ); document.write( "divide by 8/3 \n" ); document.write( "BC=9 \n" ); document.write( "Now because you have BC solved substitute into the other equations to solve for the remainder sides \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "so AC=11 \n" ); document.write( "and AB=6\r \n" ); document.write( "\n" ); document.write( "the lengths of the 3 sides of the triagle are 9,11,6 \n" ); document.write( " |