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12.03.2020 •
Mathematics
Sean has a total of 60 books on his book shelf. Of these, 25 are mystery books, 20 are fantasy books, 10 are biography books, and 5 are science books.
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Ответ:
Ответ:
Step-by-step explanation:
We are given that
Volume,V=9000 L
We have to find the salt in the tank after t minutes.
Let y(t) be the amount of salt dissolved in the tank
y(0)=16
Rate in=0
Rate out=![\frac{y}{9000}\times \frac{dV}{dt}=\frac{y(t)}{9000}\times 90=\frac{y}{100}](/tpl/images/0587/1737/3920b.png)
Where![k=e^{C}](/tpl/images/0587/1737/bd0a5.png)
Substitute t=0 and y=16