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Tpy6a [65]
2 years ago
11

In this problem, the ratios are inversely proportional. Find the missing value. If R1 = 6, R2 = 8, and I1 = 12, what is the valu

e of I2?
Mathematics
1 answer:
Drupady [299]2 years ago
5 0

Answer:

I_2=9

Step-by-step explanation:

We have been told that the ratios are inversely proportional in our given problem. We are asked to find the missing value.

We know that two inversely proportional quantities are in form y=\frac{k}{x}, where, y is inversely proportional to x and k is the constant of proportionality.

Let us find constant of proportionality using R_1 = 6 and I_1 = 12 in above equation.

6=\frac{k}{12}

6*12=\frac{k}{12}*12

72=k

Now, we will use 72=k and R_2 = 8 in our equation to find I_2 as:

8=\frac{72}{I_2}

I_2=\frac{72}{8}

I_2=9

Therefore, the value of I_2 is 9.

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Answer:

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Step-by-step explanation:

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Surface area of box = 2xy+2yz+2xz=2xy+2y(\frac{1728}{xy})+2x(\frac{1728}{xy})

Let f(x,y)=2xy+2(\frac{1728}{x})+2(\frac{1728}{y})

To get minimal surface area

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\frac{\partial(2xy+2(\frac{1728}{x})+2(\frac{1728}{y}))}{\partial y}=0

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The dimensions of the box are 12 cm , 12 cm , 12 cm

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