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Strike441 [17]
3 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]3 years ago
7 0

Answer:

its 5000kg

Step-by-step explanation:

KATRIN_1 [288]3 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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Can u guys pls help me on this question and pls explain how u got the answer
Pie

Answer:

Step-by-step explanation:

find the area of every face and the base

area of face 1= 2

area of face 2= 2

area of face 3 = 2

area of base 1= 1.7

7.7 in squared

area of a triangle is the base x height divided by 2

face 1- 2 x 2=4

4/2=2

2x3(theres 3 faces to a triangle) =6

area of base- 2 x 1.7= 3.4

3.2/2=1.7

add the faces and the base together

7.7

8 0
3 years ago
The gas tank in Ms. Brown's car holds 16 gallons. The gas tank in Mrs. Baylis car holds 25% than Ms. Brown's car. How much gas d
Vera_Pavlovna [14]
Mrs brown =16gallons
25%=1/4
16g/4=4g

So you will either need to add or subtract 4gallons to find out what’s mr Baylis car holds you haven’t said if mr Baylis car contains more or less so
4 0
2 years ago
Read 2 more answers
Classify 8x^3+32x^2+x+4.......
liq [111]

Answer:

(x+4)( 8x^{2}+1)

Step-by-step explanation:

:)

4 0
1 year ago
Point A(4,2) is translated according to the rule (x,y)-> (x+1, y-5) and then reflected across the Y-axis.
marishachu [46]
Given:

Point A with coordinates: (4, 2) is in the first quadrant.

The point is translated to the rule (x, y) --> (x+1, y-5)

Now, point A becomes (4+1, 2-5) = (5, -3) which is now in quadrant 4. 

The point is reflected across the y-axis. Now, it is in the third quadrant. 
8 0
3 years ago
Read 2 more answers
The function f(x)=2x+1 is defined over the interval [2, 5]. If the interval is divided into n equal parts, what is the value of
vodomira [7]

Answer:

  D.  5 +6k/n

Step-by-step explanation:

The width of the interval is (5 -2) = 3. The width of one of n parts of it will be ...

  3/n

Then the difference between the left end point of the interval and the value of  x at the right end of the k-th rectangle will be ...

  k·(3/n) = 3k/n

So, the value of x at that point is that difference added to the interval's left end:

  2 + 3k/n

The value of the function for this value of x is ...

  f(2 +3k/n) = 2(2 +3k/n) +1 = (4 +6k/n) +1

  = 5 +6k/n

4 0
3 years ago
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