LCD is 12.
12 goes into 12 once. 12x1=12
12 goes into 60 five times. 12x5=60
As the graph is basically y = 2x then <span>all the answer with a higher slope are meant to be equations that represtn relationship B. So the answers will be the second one: y=2.2x and the fourth one y= 3x</span>
Answer:
dy/dt = 7y / (t − 1000)
Step-by-step explanation:
Change in mass of salt = mass of salt going in − mass of salt going out
dy/dt = 0 − (C kg/L × 7 L/min)
where C is the concentration of salt in the tank.
The concentration is mass divided by volume:
C = y / V
The volume in the tank as a function of time is:
V = 1000 + 6t − 7t
V = 1000 − t
Therefore:
C = y / (1000 − t)
Substituting:
dy/dt = -7y / (1000 − t)
dy/dt = 7y / (t − 1000)
If we wanted, we could separate the variables and integrate. But the problem only asks that we find the differential equation, so here's the answer.
27 hours in the maximum hours
Answer:
1, -1, -3
Step-by-step explanation:
6(x+x+2+x+4)=-18
6(3x+6)=-18
18x+36=-18
18x=-54
x=-3
so x=-3, x+2=-1, and x+4=1
