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emiliapizzillo
14.05.2021 •
Mathematics
It takes a quarter of a yard of ribbon to make a bow. How many bows can be made with 13 yards of ribbon? PLEASE HURRY !!
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Ответ:
t = -1.042, when s = 4 m/s
Step-by-step explanation:
The finishing time of the runner is given as the function of tail-wind speed.
t = 0.0119 s² - 0.308 s - 0.0003
We have to find t, when s= 4 m/s
Substitute s = 4, in the above equation
t = 0.0119 (4²) - 0.308 (4) -0.0003 = 0.1904 - 1.232 - 0.003 = -1.0419
Rounding it to the nearest hundredth, we have,
t = -1.042
∴ t = -1.042, when s = 4 m/s.