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Alex787 [66]
3 years ago
5

The population of the county modeled by the quadrilateral below is 1,500,000. Each unit on the grid represents 1 mile. To the ne

arest whole person, what is the population density of the county?
Mathematics
1 answer:
lbvjy [14]3 years ago
8 0

Answer:

125 people per square mile

Step-by-step explanation:

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A rectangle initially has width 7 meters and length 10 meters and is expanding so that the area increases at a rate of 8 square
Tems11 [23]

Answer:

The length of rectangular is increasing at a rate 0.5714 meters per hour.

Step-by-step explanation:

We are given the following in the question:

Initial dimensions of rectangular box:

Length,l = 10 m

Width,w = 7 m

\dfrac{dA}{dt} = 8\text{ square meters per hour}\\\\\dfrac{dw}{dt} = 40\text{ centimeters per hour} =0.4\text{ meters per hour}

We have to find the rate of increase of length.

Area of rectangle =

A = l\times w

Differentiating we get,

\displaystyle\frac{dA}{dt} = \frac{dl}{dt}w + \frac{dw}{dt}l

Putting values, we get,

8 = \dfrac{dl}{dt}(7) + (0.4)(10)\\\\\dfrac{dl}{dt}(7) = 8 -4\\\\\dfrac{dl}{dt} \approx 0.5714

Thus, the length of rectangular is increasing at a rate 0.5714 meters per hour.

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2 years ago
What is the solution for f(n)=1.25n+6.25; 25???<br> Please answer this quickly
gogolik [260]
It would be f= 1.25n+6.25/n
                

8 0
3 years ago
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spin [16.1K]
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3 years ago
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What is the answer for this ?
vodka [1.7K]

Answer:

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Step-by-step explanation:

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1/27

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2 years ago
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