The surface area of a sphere is given by
![A=4 \pi r^{2}](https://tex.z-dn.net/?f=A%3D4%20%5Cpi%20%20r%5E%7B2%7D%20)
where r represents the radius.
As the radius is given as 60 meters we replace r with 60 in the formula above to get the surface area.
18,000.00.This is the answer
The first thing we must do for this case is to take into account the following variable:
x = speed in miles per hour
Then, by definition we have to:
d = v * t
Where,
d: distance
v: speed
t: time
Substituting values:
250 = x * 5
Answer:
An equation that can be used to find the speed of the train is:
250 = x * 5
Answer:
Value of expression 1 = 3
Value of expression 2 = 42
Value of expression 3 = 15
Value of expression 4 = 2
Step-by-step explanation:
Expression 1 : the sum of m and 3 divided by the difference of m minus 3
Expression 1![: \frac{m+3}{m-3}](https://tex.z-dn.net/?f=%3A%20%5Cfrac%7Bm%2B3%7D%7Bm-3%7D)
Substitute m = 6
So, value of expression 1=![\frac{6+3}{6-3}=3](https://tex.z-dn.net/?f=%5Cfrac%7B6%2B3%7D%7B6-3%7D%3D3)
Expression 2 : the sum of 3 times m and 4 times m
Expression 2: 3m+4m
Substitute m = 6
So, value of expression 2=3m+4m=3(6)+4(6)=42
Expression 3 : the difference of the product of 3 and m minus the quotient of m divided by 2
Expression 3:![3m-\frac{m}{2}](https://tex.z-dn.net/?f=3m-%5Cfrac%7Bm%7D%7B2%7D)
Substitute m = 6
So, value of expression 2= ![3m-\frac{m}{2}=3(6)-\frac{6}{2}=15](https://tex.z-dn.net/?f=3m-%5Cfrac%7Bm%7D%7B2%7D%3D3%286%29-%5Cfrac%7B6%7D%7B2%7D%3D15)
Expression 4 :the quotient of 6 divided by the difference of m minus 3
Expression 4:![\frac{6}{m-3}](https://tex.z-dn.net/?f=%5Cfrac%7B6%7D%7Bm-3%7D)
Substitute m = 6
So, value of expression 4=![\frac{6}{m-3}=\frac{6}{6-3}=2](https://tex.z-dn.net/?f=%5Cfrac%7B6%7D%7Bm-3%7D%3D%5Cfrac%7B6%7D%7B6-3%7D%3D2)