=(0.4n)(16n)
multiply 0.4 & 16 and n & n
=(0.4*16)(n * n)
=6.4n^2
Hope this helps! :)
Answer:
The domain of the expression is all real numbers except where the expression is undefined. In this case, there is no real number that makes the expression undefined.
(
−
∞
,
∞
)
{x
|
x ∈ R
}
Hope this helps I'm 80% sure this right.
The formula to find the surface area of a sphere is A=4(3.14)r². So if you plug in the data you would get,
A=4(3.14)4²
A=(12.56) (16)
A=200.96
You mught want to check over it so you will be able to solve it for yourself the next time you have this question.
Given:
A figure.
To find:
The value of x.
Solution:
Draw two parallel lines as shown in the below figure.
If a transversal line intersect two parallel lines, then alternate interior angles are same.
(Alternate interior angle)
(Alternate interior angle) ...(i)
The value of angle d is
![d=50-a](https://tex.z-dn.net/?f=d%3D50-a)
![d=50-20](https://tex.z-dn.net/?f=d%3D50-20)
![d=30](https://tex.z-dn.net/?f=d%3D30)
Using (i), we get
![b=30](https://tex.z-dn.net/?f=b%3D30)
If a transversal line intersect two parallel lines, then same sides interior angles are supplementary angles.
![c+140=180](https://tex.z-dn.net/?f=c%2B140%3D180)
![c=180-140](https://tex.z-dn.net/?f=c%3D180-140)
![c=40](https://tex.z-dn.net/?f=c%3D40)
Now,
![x=b+c](https://tex.z-dn.net/?f=x%3Db%2Bc)
![x=30+40](https://tex.z-dn.net/?f=x%3D30%2B40)
![x=70](https://tex.z-dn.net/?f=x%3D70)
Therefore, the value of x is 70.