Need help im givin out brainliest

A tank contains 6,000 L of brine with 16 kg of dissolved salt. Pure water enters the tank at a rate of 60 L/min. The solution is

aalyn [17]

Answer:

a) $S_{a}(t)=16Kg-0.16Kg*\frac{t}{min}$

b) $S_{a}(20)=12.8Kg$

Step-by-step explanation:

It can be seen in the graph that the water velocity and solution velocity is the same, but the salt concentation will be lower

Water velocity $V_{w} = 60\frac{L}{min}$

Solution velocity $V_{s} = 60\frac{L}{min}$

Brine concentration = $\frac{6,000L}{16Kg}=375\frac{L}{Kg}$

a) Amount of salt as a funtion of time Sa(t)

$S_{a}(t)=16Kg-\frac{60Kg*L}{375L}*\frac{(t)}{min}=[tex]16Kg-0.16Kg*\frac{t}{min}$

b) $S_{a}(20)=16Kg-0.16\frac{Kg}{min}*(20min)=16Kg-3.2Kg=12.8Kg$

This value was to be expected since as the time passes the concentration will be lower due to the entrance to the pure water tank

7 0

3 years ago

Identify the end behavior brain list for whoever gets it right

morpeh [17]

Answer:

Number 4, the last one

Step-by-step explanation:

8 0

3 years ago

Read 2 more answers

lupita and kevin walk to school.lupita walks 3/5 mi.kevin walks 0.65 mi.who walks a greater distance to school?how much greater?

yKpoI14uk [10]

Answer:

Kevin walks greater distance by .5mi

Step-by-step explanation:

8 0

3 years ago

Miguel’s class went to the state fair. The fairground is divided into sections. Farm exhibits are in 1/10 of the fairground How

pshichka [43]

Answer:

9 times

Step-by-step explanation:

Let the total area be x.

Farm exhibits are in 1/10 of the fairground:

f = 1/10x

Part of the fairground with rides:

r = x - f = x - 1/10x = 9/10x

How much greater is the part of the fairground with rides than farm exhibits?

r/f = 9/10x : 1/10x = 9 times

5 0

3 years ago

WHAT IS THE STEPS FOR 13+[9x(3x2)-12]x4

kolbaska11 [484]

Answer:

181

Step-by-step explanation:

Assuming that the 'x's' all symbolize multiplication, follow these steps.

First, begin with the innermost set of parenthesis: 3x2

This will give you the answer of six, this will now give you the new equation of:

13+[9x(6)-12]x4

Following the rules of PEMDAS (Parenthesis, Exponents, Multiplication, Division, Addition, and Subtraction), it is inferable that you must multiply before subtracting the twelve.

Perform this step: 9x6 to get the answer of 54.

13+[54-12]x4

Now, as there are still brackets, perform the bracketed information:

54 - 12 = 42

This now gives you: 13+[42]x4

Yet again, following the rules of PEMDAS, you multiply 42x4 then add the result of that to 13.

42x4 = 168

168 + 13 = 181

Therefore, this expression provides the answer of 181.

Hope this helps!

6 0

3 years ago