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Brut [27]
3 years ago
9

Hello, can you help me with a probability question, please:)​

Mathematics
1 answer:
sladkih [1.3K]3 years ago
6 0
Ok what is it that u need
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Bob wants to create two pens, as shown in the figure. One pen is for a garden and it needs a heavy duty fence to keep out the cr
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\bf \textit{the area of either pen is 2744, thus}\\\\&#10;A=xy\implies 2744=xy\implies \cfrac{2744}{x}=y

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notice... the dog's pen perimeter, does not include the side that's bordering the garden's, since that side will use the heavy duty fence, instead of the light one

so, the sum of both of those costs, will be the C(x)

\bf C(x)=\left( 30x+\cfrac{82320}{x} \right)+\left( 10x+\cfrac{27440}{x} \right)&#10;\\\\\\&#10;C(x)=40x+\cfrac{109760}{x}

so, just take the derivative of it, and set it to 0 to find the extremas, and do a first-derivative test for any minimum

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3 years ago
A town population has been increased at a constant rate. in 2010 the population was 46,020. by 2012 the population had increased
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