2 ( x - 3) = 2x 5
2x - 6 = 10x
2x - 10x = 6
-8x = 6
x = -6/8
x = -3/4
So, final answer is -3/4
Hope it helped
Answer:
8
Step-by-step explanation:
56/7=8
Answer:
C. 0.8125
Step-by-step explanation:
The probability to sell 5 or more DVDs in a day is the complement of the probability of selling less than 5 DVDs in a day, since sales <5 DVDs + sales >= 5 DVDs = 100% of the sales.
So, we know what's the probability of selling less than 5 DVDs in a day is... it's 0.1875
So, to find the possibility of selling 5 or more DVDs in a day, we take 100% of the chances (1.0) and we subtract the probability of selling <5 DVDs in a day:
P = 1.0 - 0.1875 = 0.8125
C. 0.8125 is your answer.
At any time
(min), the volume of solution in the tank is

If
is the amount of salt in the tank at any time
, then the solution has a concentration of
.
The net rate of change of the amount of salt in the solution,
, is the difference between the amount flowing in and the amount getting pumped out:

Dropping the units and simplifying, we get the linear ODE


Multiplying both sides by
allows us to identify the left side as a derivative of a product:



Integrate and divide both sides by
to get

The tanks starts off with 30 lb of salt, so
and we can solve for
to get a particular solution of

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Multiply sides by 8√3


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