document.write( "Question 109825: In 2005, Dan raced his car 500 miles. His rate was 157.603 mph. What was his time (to the nearest thousandth of an hour)? \n" ); document.write( "
Algebra.Com's Answer #80052 by tutorcecilia(2152)![]() ![]() You can put this solution on YOUR website! Use the distance formula: Distance = (Rate)(Time) \n" ); document.write( "500 miles = (157.603)(t) [plug-in the values] \n" ); document.write( "500/157.603=157.603t/157.603 [isolate the t-term] \n" ); document.write( "3.172528=t \n" ); document.write( "or \n" ); document.write( "t=3.173 hours \n" ); document.write( ". \n" ); document.write( "Check by plugging all of the variables back into the original equation and solve: \n" ); document.write( "D=rt \n" ); document.write( "500=(157.603)(3.173) \n" ); document.write( "500=500.074 [close enough] \n" ); document.write( " |