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Dmitrij [34]
3 years ago
10

Your friend comes from a large family. This list shows the ages of all of the children in her family. What is the median age of

the children? 12, 9, 15, 7, 9, 13, 16
Mathematics
2 answers:
Marat540 [252]3 years ago
8 0
The answer is 12. Median tends to find the middle. This has an odd number of numbers so it makes this easy. Put them in all numerical order and the middle is 12.
fomenos3 years ago
6 0

Answer:

12

Step-by-step explanation:

If you're on ttm

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Answer:

The second regon

Step-by-step explanation:

4 0
2 years ago
J= 6 for 15 - j= 21<br> What’s the answer
Ann [662]

Answer:

15+6=21

15-(-6) = 21

5 0
3 years ago
Read 2 more answers
A sphere of radius r is cut by a plane h units above the equator, where
Anika [276]
Consider the top half of a sphere centered at the origin with radius r, which can be described by the equation

z=\sqrt{r^2-x^2-y^2}

and consider a plane

z=h

with 0. Call the region between the two surfaces R. The volume of R is given by the triple integral

\displaystyle\iiint_R\mathrm dV=\int_{-\sqrt{r^2-h^2}}^{\sqrt{r^2-h^2}}\int_{-\sqrt{r^2-h^2-x^2}}^{\sqrt{r^2-h^2-x^2}}\int_h^{\sqrt{r^2-x^2-y^2}}\mathrm dz\,\mathrm dy\,\mathrm dx

Converting to polar coordinates will help make this computation easier. Set

\begin{cases}x=\rho\cos\theta\sin\varphi\\y=\rho\sin\theta\sin\varphi\\z=\rho\cos\var\phi\end{cases}\implies\mathrm dx\,\mathrm dy\,\mathrm dz=\rho^2\sin\varphi\,\mathrm d\rho\,\mathrm d\theta\,\mathrm d\varphi

Now, the volume can be computed with the integral

\displaystyle\iiint_R\mathrm dV=\int_0^{2\pi}\int_0^{\arctan\frac{\sqrt{r^2-h^2}}h}\int_{h\sec\varphi}^r\rho^2\sin\varphi\,\mathrm d\rho\,\mathrm d\varphi\,\mathrm d\theta

You should get

\dfrac{2\pi}3\left(r^3\arctan\dfrac{\sqrt{r^2-h^2}}h-\dfrac{h^3}2\left(\dfrac{r\sqrt{r^2-h^2}}{h^2}+\ln\dfrac{r+\sqrt{r^2-h^2}}h\right)\right)
5 0
3 years ago
What is the value of a in the figure shown?
Lemur [1.5K]

Answer:

Step-by-step explanation:

z = 180 - (180 - 114.8) - 45.6 = 114.8-45.6 = 69.2°

5 0
3 years ago
10. Two plots of land, one square and other rectangle have same perimeter. If the rectangular field is of size 90 m by 70 m, whi
masya89 [10]

Answer:

Here is your answer.

Hope you will enjoy

7 0
2 years ago
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