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kari74 [83]
3 years ago
13

the perimeter of cover of a textbook is 34 inches. If the width of the cover is 7 inches,what is the length of the cover

Mathematics
2 answers:
Nikitich [7]3 years ago
8 0
Merry Christmas to you and your family
Ronch [10]3 years ago
4 0
The answer is 4.857 but rounded its 4.86
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Use graphing technology to find the domain of the function f(x) = x2.
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5 0
3 years ago
In this exercise, we estimate the rate at which the total personal income is rising in the Richmond-Petersburg, Virginia, metrop
babymother [125]

Answer:

The rate at which the total income is increasing is$1627415600

Step-by-step explanation:

From the given data

Population in the area=P=961400

The rate of increase in population=dP/dt=9200

The Average Income=I=$30593

The rate of increase in Average Income=dI/dt=$1400

Now the total income is given as

Total Income=TI=PI

So the rate of increase of total personal income is given as \frac{d}{dt}(PI)

From the product rule of derivatives

\frac{d}{dt}(P*I)=I*\frac{dP}{dt}+P*\frac{dI}{dt}

Here

I is the Average Income which is given as $30593

dI/dt is the rate of increase of income which is given as $1400.

P is the population of the area which is given as 961400

dP/dt=9200 is the rate of increase of population which is given as 9200

By substituting the values,

\frac{d}{dt}(P*I)=I*\frac{dP}{dt}+P*\frac{dI}{dt}\\\frac{d}{dt}(P*I)=30593*9200+961400*1400\\\frac{d}{dt}(P*I)=\$1627415600

So the rate at which the total income is increasing is$1627415600

8 0
3 years ago
1. A restaurant bill, b, is $21. You leave a 15% tip. How much do you pay including the tip?
Lena [83]
i think it’s $24.15
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2 years ago
Read 2 more answers
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