Answer:
The answer is 960
Step-by-step explanation:all you would have to do is multiply the lenth times width. 40x24=960
Answer:
b =21
Step-by-step explanation:
Since this is a right triangle, we can use the Pythagorean theorem
a^2 + b^2 = c^2 where a and b are the legs and c is the hypotenuse
20^2 + b^2 = 29^1
400 + b^2 =841
Subtract 400 from each side
b^2 = 441
Take the square root of each side
sqrt(b^2) = sqrt(441)
b =21
Hey the image doesn't appear for me
Answer:
Yes, F is a continuous function of r
Step-by-step explanation:
We are given that
When r<R
![F(r)=\frac{GMr}{R^3}](https://tex.z-dn.net/?f=F%28r%29%3D%5Cfrac%7BGMr%7D%7BR%5E3%7D)
![r\geq R](https://tex.z-dn.net/?f=r%5Cgeq%20R)
![F(r)=\frac{GM}{r^2}](https://tex.z-dn.net/?f=F%28r%29%3D%5Cfrac%7BGM%7D%7Br%5E2%7D)
Where M=Mass of the earth
R=Radius of earth
G=Gravitational constant
We have to find the function is continuous of r or not.
LHL
![\lim_{r\rightarrow R-}\frac{GMr}{R^3}=\frac{GMR}{R^3}=\frac{GM}{R^2}](https://tex.z-dn.net/?f=%5Clim_%7Br%5Crightarrow%20R-%7D%5Cfrac%7BGMr%7D%7BR%5E3%7D%3D%5Cfrac%7BGMR%7D%7BR%5E3%7D%3D%5Cfrac%7BGM%7D%7BR%5E2%7D)
RHL
![\lim_{r\rightarrow R+}\frac{GM}{R^2}=\frac{GM}{R^2}](https://tex.z-dn.net/?f=%5Clim_%7Br%5Crightarrow%20R%2B%7D%5Cfrac%7BGM%7D%7BR%5E2%7D%3D%5Cfrac%7BGM%7D%7BR%5E2%7D)
![F(R)=\frac{GM}{R^2}](https://tex.z-dn.net/?f=F%28R%29%3D%5Cfrac%7BGM%7D%7BR%5E2%7D)
When a function is continuous at x=a
Then, LHL=RHL=f(a)
RHL==LHL=F(R)
Hence, the function is continuous of r.