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Lilit [14]
3 years ago
5

The diameter of the circle is 8 ft

Mathematics
1 answer:
Neporo4naja [7]3 years ago
3 0

Answer:

50.24

Step-by-step explanation:

r = d/2

r = 8/2

r = 4

Area of a Circle:

A = πr²

Work:

A = πr²

A = 3.14(4²)

A = 3.14(16)

A = 50.24

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Calculate the mean given the frequency table
ratelena [41]

Answer:

15.6

Step-by-step explanation:

First, multiply the midpoint of each class by its frequency, as follows:

            Class      midpoint   frequency   midpoint*frequency  

            0-9         4.5             24                4.5*24 = 108

            10-19      14.5            20                14.5*20 = 290

            20-29    24.5           32                24.5*32 = 784

Total                                      76               1182

The mean is computed as the division between the addition of the "midpoint*frequency" column by the addition of "frequency" column.

mean = 1182/76 ≈ 15.6

 

5 0
3 years ago
given the vector with a manitude of 9m at an angle a of -80 degrees, decompose this vector into two vector components oarallel t
lana [24]

Answer:

We have the magnitude, M, and the angle A.

(The angle is always measured from the +x-axis)

Then we have that:

x = M*cos(A)

y = M*sin(A)

in this case:

M = 9m

A = -80°

x = 9m*cos(-80°) = 1.562

y = 9m*sin(-80) = -8.86m

Now, the component parallel to the x axis is:

x = 9m*cos(-80°) = 1.562 m

And the slope of something parallel to the x-axis is always zero, as this is a constant line.

3 0
3 years ago
The latest online craze is a new game, Khan on Seven. You get
Alika [10]

Do you have any answer choices?

8 0
3 years ago
Read 2 more answers
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Blizzard [7]

Answer:

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7 0
3 years ago
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A class votes for their class President Kennedy receives 21 votes which is 6% of the vote what is the total number of students w
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Answer:

21

Step-by-step explanation:

literally says it in the text ight

6 0
3 years ago
Read 2 more answers
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