Answer:
3.2
Step-by-step explanation:
x² + xy = 20
Take the derivative with respect to time:
2x dx/dt + x dy/dt + y dx/dt = 20
(2x + y) dx/dt + x dy/dt = 20
Given x = -5, y = 1, and dx/dt = -4:
(2(-5) + 1) (-4) + (-5) dy/dt = 20
(-10 + 1) (-4) − 5 dy/dt = 20
36 − 5 dy/dt = 20
5 dy/dt = 16
dy/dt = 3.2
Answer:
V = 20πr²
Step-by-step explanation:
In this question, volume of the cylindrical tank has been defined as,
Volume V of the tank = Product of π, the square of the radius of the tank 'r' and the length of the tank 'h'.
Therefore, formula to calculate the formula will be,
V = πr²h
If the length of the cylindrical trailer is,
h = 20 feet
Then the volume of the trailer will be,
V = πr²(20)
V = 20πr²
Answer:
11
Step-by-step explanation:
first divide 715 and 13, which is 55
then you divide 605 and 55, which is 11
so he drove 605 miles in 11 hours.
Answer:
16
Step-by-step explanation:
+++
16
Answer:
The formula of a²-b² are as follows:
Step-by-step explanation:
(a-b)(a+b)
