Answer:
Step-by-step explanation:
The magnitude of this vector is the square-root of the sum of squares of the horizontal change and vertical change
Let the vector be t
magnitude of t will be
Answer:
Step-by-step explanation:
Amount of brine = 100 gal
amount of salt = 80 lb
rate of water running = 4 gal / min
Let A be the amount of salt in lb in the tank at any time t.
(a) dA/dt = rate of salt in - rate of salt out
Rate of salt in = 0
rate of salt out = A x 4 / 100 = A / 25 lb/min
So, dA/dt = 0 - A/25 = - A/25 lb/min
When t = 0, A = 80 lb
So,
(b) Now, A = 40 lb
So,
take log on both the sides
t = 17.3 minutes
Answer:20$ and 50% off
Step-by-step also i made 100% first try
The answer for your question is 10.46
This problem is very simple. Knowing that y=2, plug 2 into the "y" in the equation: -x+2(2)=8
-x+4=8
subtract 4 on both sides of the equation:
-x=(8-4)
-x=4
Divide both sides of the equation by (-1):
x=(-4)