document.write( "Question 1122643: A tortoise and a hare are competing in a 1200-meter race. The arrogant hare decides to let the tortoise have a 530-meter head start. When the start gun is fired the hare begins running at a constant speed of 9 meters per second and the tortoise begins crawling at a constant speed of 5 meters per second. \r
\n" );
document.write( "\n" );
document.write( "a. Define a function f to represent the tortoise's distance from the finish line (in meters) in terms of the number of seconds t since the start of the race.
\n" );
document.write( "f(t)=\r
\n" );
document.write( "\n" );
document.write( "b. solve f(t)=0 for t
\n" );
document.write( "t=\r
\n" );
document.write( "\n" );
document.write( "c. Define a function g to represent the hare's distance from the finish line (in meters) in terms of the number of seconds t since the start of the race.
\n" );
document.write( "g(t)=\r
\n" );
document.write( "\n" );
document.write( "d. solve g(t)=0 for t
\n" );
document.write( "t=\r
\n" );
document.write( "\n" );
document.write( "e. who won the race \n" );
document.write( "
Algebra.Com's Answer #738770 by Boreal(15235)![]() ![]() You can put this solution on YOUR website! Tortoise has to go 670 m \n" ); document.write( "Does so at 5 m/sec os it will take 670/5=or 135 seconds to finish. \n" ); document.write( "Distance from finish line is g(t)=670-5t for any time t.\r \n" ); document.write( "\n" ); document.write( "For the hare, the distance from the finish is g(t)=1200-9t, for any time t \n" ); document.write( "It will take the hare 1200/9 or 133.3 seconds to finish and the hare will win.\r \n" ); document.write( "\n" ); document.write( "They meet at t where both equations are equal \n" ); document.write( "670-5t=1200-9t \n" ); document.write( "4t=530 \n" ); document.write( "t=132.5 seconds, at which time the rabbit is 1200-9(132.5)=7.5 m from the end and the tortoise is 670-5t=7.5 m from the end. \n" ); document.write( " |