2 years ago

Help me fast literally fast!!!!

Mathematics

2 answers:

lions [1.4K]2 years ago

8 0

The correct answer is 12. Hope this helps.

Iteru [2.4K]2 years ago

7 0

Pretty much it is the same as saying, what is 4 times 3,

Generally, when a number is divided by a fraction, you can safely say that if you flip the fraction (in this case let's take 4 / (1/3).) it will be equivalent to the expression (in this case 4 * (3/1).)

So the answer is 12, you will plot 12 boxes.

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Will someone help with this ! I was allowed a retry for it and I don’t know how to do it

pashok25 [27]

Answer:

$\frac{dN}{dt}=k(725-N)\\separating the variables and integrating\\\int \frac{dN}{725-N}=\int kdt+c\\-log (725-N)=kt+c\\log (725-N)=-kt-c\\(725-N)=e^{-kt-c} =e^{-kt} *e^{-c} =Ce^{-kt} \\when t=0,N=400\\725-400=Ce^{0} =C\\C=325\\when t=3,N=650\\725-650=325e^{-3k} \\\frac{75}{325}=(e^{-k})^3\\\\e^{-k} =(\frac{3}{13}) ^{\frac{1}{3} } \\when t=5\\725-N=325(\frac{3}{13}) ^{\frac{5}{3} } =325*\frac{3}{13}*(\frac{3}{13} )^{\frac{2}{3}}\\N=725-75*(\frac{3}{13} )^{\frac{2}{3} }=725-28=697$