Answer:
Therefore the concentration of salt in the incoming brine is 1.73 g/L.
Step-by-step explanation:
Here the amount of incoming and outgoing of water are equal. Then the amount of water in the tank remain same = 10 liters.
Let the concentration of salt be a gram/L
Let the amount salt in the tank at any time t be Q(t).
Incoming rate = (a g/L)×(1 L/min)
=a g/min
The concentration of salt in the tank at any time t is = 
g/L
Outgoing rate = 
Integrating both sides
[ where c arbitrary constant]
Initial condition when t= 20 , Q(t)= 15 gram
Therefore ,
.......(1)
In the starting time t=0 and Q(t)=0
Putting t=0 and Q(t)=0 in equation (1) we get
Therefore the concentration of salt in the incoming brine is 1.73 g/L
(1) -6 x + 8 x = -46 Answer = -23
(2) w + 3/4 = w - 2/2 Answer = {}
(3) 2 x + 16 = 3(x - 9) Answer = 43
(4) Answer D)
(5) -3 x + 4 = -8 Answer x = 4
(6) C)
(7) B)
(8) C)
(9) x + 3/5=2 Answer x = 7/5
(10) 4 - 2 x = 10 Answer x= = -3
If something is wrong apologize, I hope it helps.
Answer:
D. liability
Step-by-step explanation:
The Emerson First National Bank is lending you money to buy a new car.
Before an agreement will be reached for any Organization to lend someone money there have to be something like a collateral.
The agreement will in it's document state that there must be a form of a reliability to hold on, such that if something's happen to the car, or you don't meet the paying up time, or something happens to you,they will see something to hold on.
Answer:
-1/2
Step-by-step explanation:
counting down by 2 over one
