Answer: standard deviation
Step-by-step explanation:
Answer:
3889
Step-by-step explanation:
you add all the numbers to get the answer
2+(12-8)
2+ (4)
The answer is 6
Given:
The equation of ellipse is
![\dfrac{(x+4)^2}{25}+\dfrac{(y-1)^2}{16}=1](https://tex.z-dn.net/?f=%5Cdfrac%7B%28x%2B4%29%5E2%7D%7B25%7D%2B%5Cdfrac%7B%28y-1%29%5E2%7D%7B16%7D%3D1)
To find:
The length of the minor axis.
Solution:
The standard form of an ellipse is
...(i)
where, (h,k) is center, if a>b, then 2a is length of major axis and 2b is length of minor axis.
We have,
...(ii)
On comparing (i) and (ii), we get
![b^2=16](https://tex.z-dn.net/?f=b%5E2%3D16)
Taking square root on both sides.
![b=\pm 4](https://tex.z-dn.net/?f=b%3D%5Cpm%204)
Consider only positive value of b because length cannot be negative.
![b=4](https://tex.z-dn.net/?f=b%3D4)
Now,
Length of minor axis = ![2b](https://tex.z-dn.net/?f=2b)
= ![2(4)](https://tex.z-dn.net/?f=2%284%29)
= ![8](https://tex.z-dn.net/?f=8)
So, the length of minor axis is 8 units.
Therefore, the correct option is B.