document.write( "Question 397749: Hi! I was hoping that you could help me solve the following problem: The resistance of copper wire varies directly with its length. A copper wire 275 feet long has a resistance of 950 ohms. What is the resistance of 1,575 feet of copper wire?\r
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Algebra.Com's Answer #281835 by ankor@dixie-net.com(22740) You can put this solution on YOUR website! The resistance of copper wire varies directly with its length. \n" ); document.write( " A copper wire 275 feet long has a resistance of 950 ohms. \n" ); document.write( " What is the resistance of 1,575 feet of copper wire? \n" ); document.write( ": \n" ); document.write( "That's a lot more resistance than actual, but anyway: \n" ); document.write( ": \n" ); document.write( "Let r = resistance of 1575 ft of wire \n" ); document.write( ": \n" ); document.write( " \n" ); document.write( "Cross multiply, solve for r \n" ); document.write( "275r = 950 * 1575 \n" ); document.write( " |