Answer:
8πcm²/sec
Step-by-step explanation:
The radius of the circle increases at a rate of dr/dt = 0.25cm/sec
The radius of the circle r = 16cm
The area of the circle increases at a rate of dA/dt = ?
Area of a circle = πr²
We take the derivative with respect to t
dA/dt = 2πrdr/dt
dA/dt = 2 π (16)(0.25)
dA/dt = 8πcm²/sec
Thank you!!!
Answer:
c
Step-by-step explanation:
Answer:
I don't know
Step-by-step explanation:
but I feel like I've done that problem before lol.
Answer:
y=(3/1)x
Step-by-step explanation:
the slope intercept form is y=mx+b where m is the slope and b is the y-intercept.
to find the slope you need to (y2-y1)/(x2-x1) meaning.
(1-(-2))/(5-4) which is = 3/1 and that is m
b is not given there fore it's 0.
the answer is y=(3/1)x
hope that helped!
Answer:
t = 5 seconds
Step-by-step explanation:
We have,
Speed of the truck, v = 4 m/s
It is required to find the time taken by a truck to travel 20 meters. It can be assumed that the time is t. Using the formula of speed.
After rearranging, we get :
So, the time taken by a truck to travel 20 meters is 5 seconds.