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Cloud [144]
3 years ago
5

(I will give brainliest, a thanks, 30 points, and 5 stars if you can answer these 2 questions)

Mathematics
1 answer:
dimulka [17.4K]3 years ago
4 0

Answer:

1. 9 pi, 2. 121 pi

Step-by-step explanation:

The formula for circumference is pi d. So for the first question the radius would be three. The you do pi r ^2 for area so 3 times pi squared. Which is 9 pi. For the second you will do the same thing you will do 22 pi divided by 2 which is 11 pi then you will square 11pi and get 121 pi

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On the rectangular coordinate system, what is the shortest distance between points (−4, 3) and (−2, −1)?
pogonyaev
Shortest Distance = \sqrt{ (-4+2)^{2} + (3+1)^{2} }
Shortest Distance = \sqrt{ (-2)^{2} + (4)^{2} }
Shortest Distance = \sqrt{20}
Shortest Distance = 4.47 units
3 0
3 years ago
Read 2 more answers
Could someone answer the question with the photo linked below?
Ne4ueva [31]

Answer:

\sqrt{28}

Step-by-step explanation:

Let's pretend the empty, white space in the middle is a triangle. A right triangle. then we just use the pythogerean theorem to get the a.

\sqrt{a \:}  \: equals \:  {8}^{2}  -  {6}^{2}

5 0
3 years ago
A giant scoop, operated by a crane, is in the shape of a hemisphere of radius 24 inches. The scoop is filled with molten steel.
shtirl [24]

Answer:

40 inches

Step-by-step explanation:

Volume, V of hemisphere = 2/3 π r^3

Radius, r = 24 inches ;

V = 2/3 π 24^3

V = 28952.917 in³

Volume of cylinder = π r^2 * h

h = height ; r = Radius = 32 /2 = 16 inches

Volume of hemisphere = volume of cylindrical tank

28952.917 = π (16)^2 * h

28952.917 = 804.24771h

h = 28952.917 / 804.24771

h = 35.9999

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Molten stell rise is 40 inches

6 0
2 years ago
How many halves are in 6 wholes
GenaCL600 [577]

Answer:

12

Step-by-step explanation:

So, all you have to do is multiply 6 and 2.

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Hope this helped!

6 0
3 years ago
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madam [21]

Answer:

y = 4 sin(½ x) − 3

Step-by-step explanation:

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y = A cos(2π/T x) + C

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The midline is the average of the min and max:

C = (1 + -7) / 2

C = -3

The amplitude is half the difference between the min and max:

A = (1 − -7) / 2

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The maximum is at x = π, and the minimum is at x = 3π.  The difference, 2π, is half the period.  So T = 4π.

Plugging in, the options are:

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y = 4 cos(½ x) − 3

Since the maximum is at x = π, this must be a sine wave.

y = 4 sin(½ x) − 3

4 0
3 years ago
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