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)\"\" \"About 
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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?
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\n" ); document.write( "That's a lot more resistance than actual, but anyway:
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\n" ); document.write( "Let r = resistance of 1575 ft of wire
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\n" ); document.write( "\"275%2F950\" = \"1575%2Fr\"
\n" ); document.write( "Cross multiply, solve for r
\n" ); document.write( "275r = 950 * 1575
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