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Strike441 [17]
2 years ago
11

A tank contains 1000L of brine with 10kg of dissolved salt. Pure water enters the tank at a rate of 25 L/min. The solution is ke

pt thoroughly mixed and drains from the tank at the same rate. How much salt is in the tank after t minutes?
Mathematics
2 answers:
Lilit [14]2 years ago
7 0

Answer:

its 5000kg

Step-by-step explanation:

KATRIN_1 [288]2 years ago
4 0

Answer:

(a) 5000 kilos

Step-by-step explanation:

If  is the amount of salt (in kg) after  minutes, then  and the total amount of liquid in the tank remains constant at 1000 L.

and

Because , we have

so

Since  is continuous, , and the right-hand side is never zero, we deduce that  is always positive.

Thus,  and

(b)

After one hour,

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Evaluate C(3, 3)<br><br> 1<br> 6<br> 24
Anestetic [448]

Answer:

1

Step-by-step explanation:

Using the definition

nC_{r} = \frac{n!}{r!(n-r)!}

where n! = n(n - 1)(n - 2) × 3 × 2 × 1

and 0! = 1

3C_{3}

= \frac{3!}{3!(3 - 3)!}

= \frac{3!}{3!(0!)}

= \frac{3!}{3!} = 1

4 0
3 years ago
Are there any linear quantities in the chart shown? And if so, what is the slope of said pairs?
VashaNatasha [74]

The chart does not represent a linear quantity

<h3>How to determine if there are linear quantities in the chart shown?</h3>

From the chart, we have the following coordinates

(x, y) = (0.10, 0.14), (0.50, 0.32), (1.00, 0.46), (1.70, 0.59) and (2.00, 0.63)

To determine if the chart is a linear quantity, we simply calculate the slope using the coordinates.

The slope is calculated as:

m = (y2 - y1)/(x2 - x1)

So, we have:

m = (0.32 - 0.14)/(0.50 - 0.10) = 0.45

m = (0.46 - 0.32)/(1.00 - 0.50) = 0.28

In the above computations, the calculated slopes are not equal

Hence, the chart does not represent a linear quantity

Read more about linear equations at:

brainly.com/question/1884491

#SPJ1

7 0
2 years ago
If x= -4, find the value of x²-5+6.​
lbvjy [14]

Answer:

42 is your answer if there is -5x

Step-by-step explanation:

when x=-4

x²-5x+6=(-4)²-5×-4+6=16+20+6=42

3 0
2 years ago
Read 2 more answers
What is 6 1/2 + 10? please tell me and explain for me to understand
ipn [44]

Answer:

33/2

Step-by-step explanation:

6 1/2 ---> 13/2

10 ---> 20/2

13/2 + 20/2 =

33/2

5 0
3 years ago
Why did large numbers of Africans migrate to the Americas? A. Countries competed over resources during the Age of Exploration, a
Marianna [84]

Answer:DEFINITELY B

THE PROOF IS IN YOUR BIBLE

Step-by-step explanation:

7 0
3 years ago
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