document.write( "Question 1167529: Lolo Jose constructs a wooden ladder with 6 steps. The height of the ladder is 6ft longer than the lengths of the steps. What are the dimensions of the ladder if only 20 feet of wood is used?
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Algebra.Com's Answer #792120 by Theo(13342) You can put this solution on YOUR website! let H = the height of the ladder. \n" ); document.write( "let S = the length of each step.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "the height of the ladder is 6 feet longer than the length of each step.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "equation for that is H = S + 6\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "the ladder has 2 pieces of wood that are as long as the height of the ladder and 6 pieces of wood that are as long as the length of each step.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "the total amount of wood is 20 feet.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "therefore:\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "2H + 6S = 20\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "since H = S + 6, then:\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "2 * (S + 6) + 6S = 20\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "simplify to get 2S + 12 + 6S = 20\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "combine like terms to get 8S + 12 = 20\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "subtract 12 from both sides of the equation to get 8S = 8\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "solve for S to get S = 1\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "the length of each step is equal to 1 foot.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "the height of the ladder is S + 6 = 7 feet.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "there are 2 pieces of wood that are 7 feet long each and 6 pieces of wood that are 1 foot long each.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "total amount of wood = 2 * 7 + 6 * 1 = 14 + 6 = 20.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "the dimensions of the ladder are 7 feet high by 1 foot wide.\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |