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20.04.2021 •
Mathematics
If 40% of a number is 14, find 20% of that number.
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Ответ:
7
Step-by-step explanation:
Because half of 40% is 20%
So 14%2 = 7
Ответ:
1.66 sec
Step-by-step explanation:
F(t) =t/sqrt(1-v^2)
ATQ, v=0.8*c and t=1
F(1)=1/sqrt(1-(0.8)^2)
F(1)=1/sqrt(0.36)
F(1)=10/6=1.66 sec