document.write( "Question 921827: Two sides of a triangle have the same length. The third side is 12 cm less than 3 times the length of each equal side. What are the lengths of all three sides if the perimeter is 48 feet? \n" ); document.write( "
Algebra.Com's Answer #559249 by mathwiz16(1)![]() ![]() ![]() You can put this solution on YOUR website! Let x be the equal side and y be the third side.\r \n" ); document.write( "\n" ); document.write( "y = 3x-12\r \n" ); document.write( "\n" ); document.write( "Perimeter = 2x + y = 48 y = 48 - 2x\r \n" ); document.write( "\n" ); document.write( "Make both equations equal:\r \n" ); document.write( "\n" ); document.write( "48 - 2x = 3x - 12 \n" ); document.write( "5x = 60 \n" ); document.write( "x = 12\r \n" ); document.write( "\n" ); document.write( "Sub in x to solve for y :\r \n" ); document.write( "\n" ); document.write( "y = 3(12) - 12 \n" ); document.write( "y = 24\r \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |