tbt81
17.07.2019 •
Mathematics
At a nascar race, the lead car has 7 1/2 laps to go. suddenly there is a caution flag, so all the racers must hold position while continuing at a reduced speed for 5/6 of a lap. when racing resumes, how many laps does the lead car have to go?
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Ответ:
F(x) = 25x² - 100
g(x) = 1/5x
{ 7 1/5x² - 100 = y
{ 1/5x = y
∴ 25 x² - 100 = 1/5x
x = 2
y = 0.4