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lana66690 [7]
3 years ago
13

Seventh grade

Mathematics
1 answer:
irina [24]3 years ago
8 0

Answer:

median of seventh grade = 16.5

median of ninth grade = 16.5

Step-by-step explanation:

median = middle number, there are 18 numbers in total of each set. Since its even the middle number is kinda 16 and 17, but you can only choose one so the middle of 16 and 17 is 16.5

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A volume of the cone is (1/3) the volume of a cylinder. The volume of the sphere is what fraction of the volume of the cylinder?
xenn [34]

Answer:

4/3

Step-by-step explanation:

To know this, let's write down the formulas for the volume of cylinder and sphere.

Vs = 4/3πr³   (1)

Vc = π r² h    (2)

Now, we do have a little problem here and its the fact that the sphere do not have a height like the cylinder do. But in this case so if you want to have an idea of the fraction of the volume, we will assume that the cylinder has the same height as its radius. Assuming this we have the following:

Vs / Vc = 4πr³ / 3πr²h

Vs/Vc = 4πr³ / 3πr³

From here, we can cancel out the values of π and r³:

Vs/Vc = 4/3

<h2>Vs = 4/3 Vc</h2>

Thus we can conclude that the volume of the sphere is 4/3 the volume of a cylinder.

Hope this helps

8 0
3 years ago
4(2x+3)=x(3+5)+12<br> Help
Karo-lina-s [1.5K]

Answer:

Step-by-step explanation:

8x + 12 = 3x + 5x + 12

8x + 12 = 8x + 12

Bringing like terms on one side

8x - 8x = 12 - 12

x = 0

7 0
3 years ago
Read 2 more answers
Which of the numbers 19 21 23 and 25 has the most factors
belka [17]
It would either be 21 or 25 as they both have the same amount of factors :)
5 0
3 years ago
The county hospital is located at the center of a square whose sides are 3 miles wide. If an accident occurs within this square,
Dmitry_Shevchenko [17]

Answer:

3

Step-by-step explanation:

The x-coordinate of the accident is a random variable of uniform distribution with range [-1.5,1.5]. The same can be said for the y-coordinate. However, |x| and |y| are also uniform variables with range [0,1.5], since we still have the same probability on every pair of intervals with the same lenght.

Note that |X| and |Y| are independent with each other, therefore E(|x|+|y|) = E(|x|) + E(|y|) = 2*E(|x|). The last equality holds because both x and y are identically distributed, then so are |x| and |y|.

E(|x|) = \int\limits^{1.5}_0 {\frac{x}{1.5} \, dx = \frac{2}{3}* ((1.5^2)/2 - 0^2/2) = \frac{3}{2}

Therefore, E(|x| + |y|) = 2 * 3/2 = 3.

I hope that works for you!

4 0
3 years ago
If A = (-2,-4) and B = (-8,4), what is the length of AE?
almond37 [142]

Answer:

It's C

Step-by-step explanation: How far is it from -2 to -8 horizontally?

They are 6 apart, right?

How far is -4 to 4 vertically? 8.

__________________________________________________________

6^2 + 8^2 = c^2

36 + 64 = c^2

c = 100 = 10

___________________________________________________________

So in short yea...it's C UwU

3 0
3 years ago
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