document.write( "Question 78065: 1. Find the length of a shorter leg of a right triangle if the longer leg is 10 miles more than the shorter leg and the hypotemuse is 10 miles less than twice the shorter leg.\r
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Algebra.Com's Answer #55969 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! Find the length of a shorter leg of a right triangle if the longer leg is 10 miles more than the shorter leg and the hypotemuse is 10 miles less than twice the shorter leg. \n" ); document.write( "--------------- \n" ); document.write( "Let the length of the shorter leg be \"x\" miles. \n" ); document.write( "Longer leg is \"x+10\". \n" ); document.write( "Hypotenuse is \"2x-10\". \n" ); document.write( "------------------------ \n" ); document.write( "EQUATION: Use Pythagoras to get: \n" ); document.write( "x^2 + (x+10)^2= (2x-10)^2 \n" ); document.write( "x^2 + x^2+20x+100 = 4(x^2-10x+25) \n" ); document.write( "2x^2+20x+100 = 4x^2-40x+100 \n" ); document.write( "2x^2-60x=0 \n" ); document.write( "2x(x-30)=0 \n" ); document.write( "x=30 (this is the length of the shorter leg) \n" ); document.write( "============= \n" ); document.write( "cheers, \n" ); document.write( "Stan H. \n" ); document.write( " |