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nignag [31]
2 years ago
7

The sides of a square field are 32 meters. A sprinkler in the center of the field sprays a circular area with a diameter that co

rresponds to a side of the field. How much of the field is not reached by the sprinkler? Round your answer to the nearest hundredth. Use 3.14 for π.
Mathematics
1 answer:
olga2289 [7]2 years ago
5 0
You find the area not touched by the sprinkler by subtracting the area of the circle from the area of the square.  The area of the square is 32*32 which is 1024.  The area of the circle is found by multiplying 3.14 by the radius squared.  Our radius is half the diameter of 32, so r = 16.  A=3.14(16)(16) which gives us an area of the circle to be 803.84.  Subtracting the 2 areas, square minus circle, is 1024-803.84=220.16 meters squared.
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Kira looked through online census information to determine the average number of people living in the homes in her city. What is
Goshia [24]
First we need to identify if the data is qualitative or quantitative.

The data is average number of people living in the homes.

Qualitative data as its name indicates is an attribute or characteristic. It can not be measured e.g color. Quantitative data is such a data which can be counted or measured.

Since the average number of people can be counted and measured, the data is Quantitative.

In an observational study the individuals are observed. In the given case, Kira did not observed the individuals to gather the data, rather she used an Online resource to gather the data.

Therefore, the correct answer will be:
Kira used published data that is quantitative.
4 0
2 years ago
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While remodeling her kitchen Angela is repainting. She estimates that she paints 55 square feet every half-hour. How many square
madreJ [45]
110 square feet. 55x2=100
5 0
2 years ago
Find the average rate of change of the function defined by the following table. x y -2 -5 2 35 6 75 10 115
Pani-rosa [81]

By definition we have that the average rate of change of the function is:

 AVR =  \frac{f(x2) - f(x1)}{x2 - x1}

 Evaluating the function for the complete interval we have that the AVR is given by:

 AVR = \frac{115 - (-5)}{10 - (-2)}

 Rewriting we have:

 AVR = \frac{115+5}{10+2}

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 Answer:

 the average rate of change of the function defined by the table is:

 AVR = 10

6 0
2 years ago
Use the geometric definition of the cross product and the properties of the cross product to make the following calculations. (a
kirill [66]

Answer:

Step-by-step explanation:

we know

\vec{i}\times \vec{j}=\vec{k}

\vec{j}\times \vec{k}=\vec{i}

\vec{k}\times \vec{i}=\vec{j}

(a)\left [ \left ( \hat{i}+\hat{j}\right )\times \hat{i}\right ]\times \hat{j}

=\left [ \hat{i}\times \hat{i}+\hat{j}\times \hat{i}\right ]\times \hat{j}

=\left [ 0-\hat{k}\right ]\times \hat{j}

=\hat{i}

(b)\left ( \hat{j}+\hat{k}\right )\times \left ( \hat{j}\times \hat{k}\right )

=\left ( \hat{j}+\hat{k}\right )\times \left ( \hat{i}\right )

=\hat{k}+\hat{j}

(c)4\hat{i}\times \left ( \hat{i}+\hat{j}\right )

=4\hat{i}\times \hat{i}+4\hat{i}\times \hat{j}

=0+4\hat{k}

(d)\left ( \hat{k}+\hat{j}\right )\times \left ( \hat{k}-\hat{j}\right )

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6 0
2 years ago
A department store sells t-shirts for $16.00. Every month that a t-shirt doesn’t sell, the store reduces the selling price by 25
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Answer:

Step-by-step explanation:

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C = 25% of 10.5

=\frac{25}{100}*10.5=\frac{10.5}{4}

= 2.625 = $ 2.63

Selling price = 10.5 - 2.63 = $ 7.87

5 0
2 years ago
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