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9 June, 07:51

A tortoise and a hare are competing in a 1200-meter race. The arrogant hare decides to let the tortoise have a 580-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. 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. f (t) = 1200-5t + 580 Incorrect Solve f (t) = 0 for t. t = Incorrect 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. g (t) = Incorrect Solve g (t) = 0 for t. t = Incorrect Who won the race? Incorrect

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  1. 9 June, 09:50
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    Step-by-step explanation:

    The total distance to be covered in the race is 1200 meters.

    Distance = speed * time

    The arrogant hare decides to let the tortoise have a 580-meter head start. The tortoise begins crawling at a constant speed of 5 meters per second when the start gun is fired.

    If t represents the number of seconds since the start of the race, then the distance covered by the tortoise is 580 + 5t

    Therefore, the function f, used to represent the tortoise's distance from the finish line (in meters) would be

    f (t) = 1200 - (580 + 5t)

    f (t) = 1200 - 580 - 5t

    f (t) = 620 - 5t

    For f (t) = 0,

    620 - 5t = 0

    5t = 620

    t = 125 seconds

    When the start gun is fired the hare begins running at a constant speed of 9 meters per second. The 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 would be

    g (t) = 1200 - 9t

    If g (t) = 0, then

    1200 - 9t = 0

    9t = 1200

    t = 1200/9 = 133.33 seconds

    The tortoise won the race.
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