Answer:
The correct option is D) 
Step-by-step explanation:
Consider the provided information.
People are entering a building at a rate modeled by f (t) people per hour and exiting the building at a rate modeled by g (t) people per hour,
The change of number of people in building is:

Where f(t) is people entering in building and g(t) is exiting from the building.
It is given that "The functions f and g are non negative and differentiable for all times t."
We need to find the the rate of change of the number of people in the building.
Differentiate the above function with respect to time:
![h'(x)=\frac{d}{dt}[f(t)-g(t)]](https://tex.z-dn.net/?f=h%27%28x%29%3D%5Cfrac%7Bd%7D%7Bdt%7D%5Bf%28t%29-g%28t%29%5D)

It is given that the rate of change of the number of people in the building is increasing at time t.
That means 
Therefore, 
Hence, the correct option is D) 
Answer:
520000 cm
Step-by-step explanation:
multiply the length value by 10000
Answer:
about 4650 square inches
Step-by-step explanation:
The area is the product of length and width. Each conversion factor cancels a unit we don't want and replaces it with a unit we do want.
(1.5 m)(2 m)((1 in)/(0.0254 m))^2 = 3/.00064516 in^2 = 4650.0093... in^2
≈ 4650 in^2
The photograph has an area of 4650 square inches.
We know, Volume of a Cube = Edge³
so, it would be: f(v) = a³
Hope this helps!
Which of these can form a triangle? A 3, 4, 5 B12, 35, 40 C2, 7,7 D 125, 75, 200 5, 6, 13
Jobisdone [24]
Answer:
A
Step-by-step explanation:
Pythagorean Theorem
A^2 + B^2 = C^2
Hope this helps