8 - (6-4) : 2 = 7
that's it
7.309
The thousandth is third number to the right of the decimal. We round 5+ up and 4- we round down.
So we round the decimal into third place, the fourth place is the 7 so we round that up, and we get 7.309
Answer:
B
Step-by-step explanation:
Answer:
1.10 quarts
Step-by-step explanation:
We are given that
Capacity of system=20 quarts=
1 gallon=4 quarts
Initially mixture contains
Antifreeze=3 quarts=
Water=17 quarts=
Water runs in to the system=1gal/min
We have to find the antifreeze in the system at the end of 5 minutes.
Concentration inflow=0
Let Concentration outflow=x
Rate of system=Concentration inflow(water inflow rate)-Concentration outflow(water outflow rate)
Taking integration on both sides
Using formula
Substitute t=5
Hence, in the end of 5 minute ,the antifreeze in the system=1.10 quarts