document.write( "Question 975814: Due to melting, an ice sculpture loses half of its weight every hour. After eight hours, it weighs 5/16 of a pound. How much did it weigh in the beginning?\r
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document.write( "I have tried...1/2x-60=8(5/16) I do not know how to set up the equation? \n" );
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Algebra.Com's Answer #597456 by Alan3354(69443) You can put this solution on YOUR website! Due to melting, an ice sculpture loses half of its weight every hour. After eight hours, it weighs 5/16 of a pound. How much did it weigh in the beginning?\r \n" ); document.write( "\n" ); document.write( "I have tried...1/2x-60=8(5/16) I do not know how to set up the equation? \n" ); document.write( "=================== \n" ); document.write( "W = starting weight. \n" ); document.write( "L = weight left. \n" ); document.write( "----- \n" ); document.write( "L = W*(1/2)^t (t in hours) \n" ); document.write( "5/16 = W*(1/2)^8 = W/256 \n" ); document.write( "W = (5/16)*256 = 80 pounds. \n" ); document.write( "----------- \n" ); document.write( "Start: 80 pounds \n" ); document.write( "> 1 hr 40 pounds \n" ); document.write( "> 2 hr 20 pounds \n" ); document.write( "> 3 hr 10 pounds \n" ); document.write( "> 4 hr 5 pounds \n" ); document.write( "> 5 hr 5/2 pounds \n" ); document.write( "> 6 hr 5/4 pounds \n" ); document.write( "> 7 hr 5/8 pounds \n" ); document.write( "> 8 hr 5/16 pounds \n" ); document.write( " \n" ); document.write( " |