document.write( "Question 178933: The police use the formula v = 4.9 √L to estimate the speed of a car v based on the length L of its skid marks on dry pavement.
\n" ); document.write( "a.) What is a reasonable estimate for a car's speed if its skid marks measure 220 feet?\r
\n" ); document.write( "\n" ); document.write( "b.) What would be the length of your skid marks if you drove with the speed of 65 mph?
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Algebra.Com's Answer #133880 by Mathtut(3670)\"\" \"About 
You can put this solution on YOUR website!
\"v=4.9sqrt%28L%29\"
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\n" ); document.write( "a)\"v%28220%29=4.9sqrt%28220%29=4.9%2814.83%29=highlight%2872.68%29\"mph
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\n" ); document.write( "b)\"65=4.9sqrt%28L%29\"
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\n" ); document.write( "\"13.265=sqrt%28L%29\"
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\n" ); document.write( "\"highlight%28L=175.96%29\"feet
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