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marysya [2.9K]
3 years ago
8

PLEASE HELP! What is the approximate area of the shaded region? use 3.14 for Pi

Mathematics
2 answers:
VashaNatasha [74]3 years ago
8 0

Answer:

16.86

Step-by-step explanation:

The circle area =3.14*1=3.14

The area of the square- the circle=shaded area.

=20-3.14=16.86

tiny-mole [99]3 years ago
6 0

Answer:

A. 16.86 square inches

Step-by-step explanation:

Area of Circle = \pi r^2, where r = radius.

Area of Rectangle = l * w, where l = length and w = width.

We are given the radius of the circle as 1, and we use π as 3.14

  • 3.14*1^2
  • 3.14*1
  • 3.14

Next, we find the area of the rectangle.

  • 5*4
  • 20

Lastly, we subtract 3.14 from 20.

  • 16.86

Therefore, the answer is A. 16.86 square inches.

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Determine the distance between point (x1, y1) and point (x2, y2), and assign the result to point distance. the calculation is: d
Ronch [10]

we are given two points as

(1.0, 2.0) and (1.0, 5.0)

so,

(x1, y1)= (1.0 , 2.0)

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x1=1 , y1=2

x2=1 , y2=5

now, we can use distance formula

d=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}

now, we can plug values

and we get

d=\sqrt{(1-1)^2+(5-2)^2}

d=\sqrt{(0)^2+(3)^2}

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3 years ago
A professor at a university wants to estimate the average number of hours of sleep the students get during exam week. The profes
balandron [24]

Answer:

The sample size is n = 2

Step-by-step explanation:

From the question we are told that

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From the question we are told the confidence level is  99% , hence the level of significance is    

      \alpha = (100 - 99 ) \%

=>   \alpha = 0.01

Generally from the normal distribution table the critical value  of  \frac{\alpha }{2} is  

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Generally the sample size is mathematically represented as  

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=>  n = [\frac{2.58  *  2.539  }{4.266} ] ^2

=>  n = 2

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3 years ago
What do you call when a relation with each x value has one y value
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3 years ago
In isosceles triangle ABC, BC is the shortest side. If the degree measure of A is a multiple of 10, what is the smallest degree
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n b knhkn hbk n

Step-by-step explanation:

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1.In a class of 45 pupils ,21play chess and 23 play cards and 5play both games
Mumz [18]

Step-by-step explanation:

(a)

ii.

21 - 5 = 16 play only chess.

iii.

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5 play both.

that is 16+18+5 = 39 that play at least one of these games.

i.

so, 45 - 39 = 6 don't play any of these games.

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2 years ago
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