A 130 gallon tank initially contains 10 lbs salt dissolved in 60 gallons of water. Brine containing 1 lb salt per gallon begins to flow into the tank at the rate of 3 gal/min and the well-mixed solution is drawn off at the rate of 1 gal/min. How much salt is in the tank when it is about to overflow

Answers

Answer 1

Answer:

80 lb of salt

Step-by-step explanation:

Let us assume the water flows into the rank for x minutes.

There is an initial of 60 gallons of water in the tank and water flows in at 3 gal/min. In x minute, the amount of water in the tank = 60 + 3x

Water flows out at 1 gal/min, therefore in x minute the amount of water in the tank = 60 + 3x - x = 60 + 2x

The tank begins to overflow when it is full (has reached 130 gallons). Therefore:

130 = 60 + 2x

2x = 130 - 60

2x = 70

x = 35 minutes.

In 35 minutes the tank would start to overflow.

1 lb salt per gallon flows into the tank at 3 gal/min, in 35 min the amount of salt that entered the tank = 3 gal/min × 35 min × 1 lb/gal = 105 lb

1 lb salt per gallon flows out of the tank at 1 gal/min, in 35 min the amount of salt that flow out of the tank = 1 gal/min × 35 min × 1 lb/gal = 35 lb

Initially there is 10 lb of salt dissloved into 60 gallons of water.

Therefore the amount of salt is in the tank when it is about to overflow = 10 + 105 - 35 = 80 lb of salt.


Related Questions

Salvador runs 24.5 miles per week. How many miles does he run each day?

Answers

Answer:

3.5 miles per day

Step-by-step explanation:

There are 7 days in a week

24.5 miles in a week

24.5 / 7 days

3.5 miles per day

Answer:

3.4 miles

Step-by-step explanation:

You would divide 24.5 by 7 since there are 7 days in a week giving you a quotient of 3.5

Find f (7) when f (x) = -5x + 2.

Answers

Step-by-step explanation:

f(x) = -5x + 2

f(7) = (-5)(7) + 2

= -35 + 2

= -33

Answer:

f (x) = -5x + 2.

= -5*7+2

= -13

Step-by-step explanation:

I guess I was help full for u

plz follow me for more updates

find the distance between theses points:(8,0),(-6,6). Round answer to nearest tenth if necessary.

Answers

Answer:

Chicken strips

Step-by-step explanation:

Dont ask they are just on my mind

Solve the equation.
b + 6 = 27

Answers

Answer:

Step-by-step explanation:

b+6=27

b=27-6

b=21

Answer:

b = 21

Step-by-step explanation:

To find this answer, all you have to do is subtract 6 from both sides of the equal sign, where you will cancel out the 6 and subtract 6 from 27. 27 minus 6 is 21, so you are left with b = 21

The Math 123 book includes about 230 pages (not including the back parts of the book). If you aim to complete 65% of all the pages, how many should you finish?

Answers

Answer: 150 pages

Step-by-step explanation:

I usually just multiply the number by the percentage and it works out just fine :)

234 + 300 and scram. ok bio now go do homework no ples

Answers

Answer:

534

Step-by-step explanation:

catering company uses a linear function to determine the total cost of parties. The following table shows the costs for dinner parties with varied numbers of guests. What is the cost to cater a dinner party with 90 guests?

Answers

Answer:

Your answer is B. #795. Hope this helps!

Answer:

B. $795

Step-by-step explanation:

The graph of y = |x-1|+7 is reflected across the y-axis and then translated up 1 unit. What is an equation of the transformed graph?

Answers

The original equation: y = |x - 1| + 7

The new equation: y = |-x - 1| + 8

say you have (-4,-4) and (8,4)
which ones are the y2, y1, x2, and x1

Answers

It doesn’t matter (8,4) 8=x1 , 4=y1 (-4,-4) -4=x2 , -4=y2

Gabriella makes a profit of $.80 for every cup of coffee that she sells at her coffee shop she wanted to make a profit of at least $75 today on coffee if she’s sold 90 cups today which statement is correct

Answers

Answer:

Gabriela needs to sell 4 more cups of coffee to make a profit of $75.

She sells 90 cups and makes $0.80 profit on each cup. That equals $72 profit.

90 x $0.80= $72

She wants to make $75 profit.

$75 - $72 = $3  profit short for the day

$3/$0.80 = 3.75 cups of coffee short  so to make her profit she must sell a total of 94 cups of coffee for the day or an additional 4 cups.

Step-by-step explanation:

x is less than nine ​

Answers

Answer:

x < 9

Step-by-step explanation:

x is less than nine

x < 9

Answer:

x<9

Step-by-step explanation:

less than symbol is this <

The question is x is less than 9

so

x<9

Hope this helps!

can I get an answer please ​

Answers

Answer:

the first one.

jimmy has a pool sixteen feet wide and twelve feet long how much material does he need to cover the pool

Answers

Answer:

192 square feet of material

Step-by-step explanation:

You find the area of the pool, which is length x width, and that is 12 x 16, which is equal to 192

I hope this helps!

Answer:

16 x 12=192

Step-by-step explanation:

(a) Reuben runs 12 miles in 96 minutes.
How many miles does he run per minute?
miles per minutes?

Answers

Answer:

0.125 miles per minute

The quotient of 5 and a number, k ? Write the algebraic expression

Answers

Answer:

[tex] \frac{5}{k} [/tex]

Step-by-step explanation:

Quotient refers to the result we get when we divide a number by another number. In more precise words, the dividend (numerator) over the divisor (numerator) equals the quotient.

In this case, 5 is the dividend, k is the divisor, which is representing an unknown number.

We cannot get an actual number, but we can use algebraic expression to express the quotient as follows:

Quotient of 5 and k = [tex] \frac{5}{k} [/tex]

Rewrite 118 as a fraction in lowest terms.

Answers

Last choice 1 9/50

118/100 =

(2 × 59)/(22 × 52) =

((2 × 59) ÷ 2) / ((22 × 52) ÷ 2) =

59/(2 × 52) =

59/50

Then

59 ÷ 50 = 1 and remainder = 9 =>

59 = 1 × 50 + 9 =>

59/50 =

(1 × 50 + 9) / 50 =

1 + 9/50 =

1 9/50

eric ran 3 miles in 20 minutes. what is eric’s speed?

Answers

Answer:

Step-by-step explanation:

speed=distance/time

20 minutes=1/3 hours

=3*3/1

=1miles/hour

Top answer is wrong it is
9miles per hour since 20 minute / 60 hour = 0.333333
D=s/t
D=3/0.33333
D=9 miles per second

What is the slope of the equation y-3 =-4(X - 5)?
-4
-3
20
23

Answers

Answer:

-4

Step-by-step explanation:

Answer:
The slope of the equation is -4.

Explanation:
Usually, when the question asks us to find the slope of the equation, the values are organized in this formula:

y=mx+b

This formula is called slope-intercept form. Here’s what the variables mean:

y=the y axis
m= the slope of the line
x=the x axis
b=the point on the line that intercepts the y axis (the y-intercept)

And to find the slope, all we would need to do is look at what number is plugged in as “m”. However, the equation the your problem gave us isn’t organized in slope-intercept form (yet) so we’re going to have to do some maneuvering.

Firstly, simplify the equation and isolate the y variable (because it’s isolated in slip-intercept form)

y-3=-4(x-5)
Move -3 to the other side to isolate y
y=-4(x-5)+3
Multiply -4 to the parentheses
y=-4x+20+3
y=-4x+23

Now, it’s clear that -4 is in the place of the “m” variable, which is the slope. Here is a comparison:

y=mx+b
y=-4x+23

Therefore, the slope of the equation is -4.

I hope this helped! If it did, a brainliest would be much appreciated :)

1) The smallest perfect square number 1 point
divisible by 5, 6 and 27 is

Answers

Answer:

[tex]8100[/tex], which is the square of [tex]90[/tex].

Step-by-step explanation:

Factor the three divisors into prime numbers:

[tex]5[/tex] is a prime number itself.[tex]6 = 2\times 3[/tex].[tex]27 = 3^3[/tex].

Any number divisible by these three divisors should include the following factors:

[tex]2[/tex],[tex]3^3[/tex], and [tex]5[/tex].

Note that all these three prime factors have an odd power ([tex]1[/tex], [tex]3[/tex], and [tex]1[/tex], respectively)

[tex]2[/tex] becomes [tex]2^2[/tex] (add [tex]1[/tex] to the initial power of [tex]1[/tex] to obtain [tex]2[/tex].)[tex]3^3[/tex] becomes [tex]3^4[/tex].[tex]5[/tex] becomes [tex]5^2[/tex].

The product of these three factors would be:

[tex]2^2 \times 3^4 \times 5^2 = 8100[/tex].

Indeed, [tex]8100[/tex] is divisible by all these three divisors. At the same time, because all the powers of its prime factors are even,

[tex]8100 = (2 \times 3^2 \times 5)^2 = 90^2[/tex].

Answer:

8100 is the smallest perfect square divisible by 5,6 and 27

Step-by-step explanation:

5 = 5 * 1

6 = 2 * 3

27 = 3 * 3 *3

5 * 6 * 27 = 2 * 3 * 3 * 3 * 3 * 5

Factors of perfect square will be perfect squares

To make this a perfect, multiply by 5 * 2

Perfect square = 5 * 6 * 27 * 5 * 2

                        = 8100

A farmer owns 28 acres of land . Of the 28 acres only 65% can be formed .how many acres Are available for farming ?

Answers

Answer:

18.20 acres

Step-by-step explanation:

28×65% =

= 28×65/100

= 1820/100

= 18.20 acres

All sale items are marked an additional 10% off the sale price. If a coat that originally costs $110 is on sale for 25% off, what is the new sale price? Is this a reduction of 35% off the original price

Answers

Answer:

The new sales price is $74.25

Step-by-step explanation:

110 x 0.25 = 27.5

110 - 27.5 = 82.5

82.5 x 0.10 = 8.25

82.5 - 8.25 = 74.25

Simply discounting 35% off the original price does not work in this specific problem.

1. Set A represents rational numbers. Set B represents integers. Which diagram shows
the numbers placed in the correct
sets?
Set A
Set A
1.5
1
10
3
3.1
С
Set B
Set B
-12
Set A
Set A
7.1
10
2
win
mi
B
D
Set B
Set B
-3.4
-6.8

Answers

Answer: Choice C) Upper right corner (aka northeast corner)

====================================================

Explanation:

Rational numbers are ones where we can write as a fraction of two integers. Any rational number is in the form a/b where a,b are integers and b is nonzero.

Terminating decimals can be written as a rational number. Something like 3.1 is equivalent to 31/10.

Of the four answer choices, only choice C is correct.

Choice A has the value '3' as a rational number, but it doesn't have it in the set of integers as well. So that's why choice A is incorrect.

Choice B has -3.4 in the set of integers, which is not correct. Integers do not have any decimal portion. The same applies to choice D also. We can rule choices B and D out.

a can of paint covers 400 square feet how many cans will needed to cover 3,000 square feet

Answers

Answer:

7 and a half cans of Paint ( 7.5 cans of paint )

Step-by-step explanation:

If one can of paint covers 400 square feet then this should be easy. Since you need 3,000 square feet covered with paint (and one paint can cover 400 sq) then just divide 3,000 by 400.

This will show you how many times 400 can go into 3,000 which is the same as saying "how many cans of paint can i used to cover 3,000 square feet?"

Hope this helped!-Greg

manuel works at cheese cake king. He earns $15 per hour as a busboy. the waiters he helps give him 25% of their tips.
a) if manuel worked 6 hours today, how much did he earn, without tips?
b) the waiters mauel assited waited on 16 tabels, and the total bill from all the these tabels was $1,188. the waitress earned 15% in tips, and 25% of these earnings to manuel. How much money did manuel make in tips?
c)what was manuel's total salary for the day?
d) what was manuel's average ernings per hour, including tips? round to the nearest cent

Answers

Answer:

a. 90

b. 44.55

C. 134.55

D. 22.42

Step-by-step explanation:

A. 6*15 = 90

B. 15 % of 1188 is 178.2, and 178.2 divided by 4 (0.25%) is 44.55

C 90 + 44.55 = 134.55

d. 134.55 divided by 6 hours worked is 22.42

a. The earning should be 90.

b. The money that should be made is 44.55.

c. The total salary for the day is 134.55

d. The Manuel average earnings per hour, including tips is 22.42

Calculation of the earning, money, total salry, and average earnings per hour:

a.

The earnings should be

= 6(15)

= 90

b. The money made should be

The 15% of 1188 should be 178.2

Now we have to divide the 178.3 from 4 so it comes 44.55.

c. The total salary should be

= 90 + 44.55

= 134.55

d. The average earnings per hour should be

Here  134.55 divided by 6 hours = 22.42

Learn more about earnings here: https://brainly.com/question/24512296

3|3t+1|=2|6t+3| Need hep

Answers

Answer:

your answer would be  t=-1 or t=1

Step-by-step explanation:

-(2t-3) = 3t-2

Multiply

     -2t+3 = 3t-2

Rearrange and Add up

     -5t = -5

Divide both sides by 5

-t = -1

Multiply both sides by (-1)

t = 1

Which is the solution for the Negative Case

Solve the Positive Case

     (2t-3) = 3t-2

Rearrange and Add up

     -t = 1

Multiply both sides by (-1)

     t = -1

have a great day!

Help me I will give extra points

Answers

Answer: g(x) = -4x + 5

Please mark me brainliest instead of points

Nathan is hosting a part for 40 guests. He will count each of the 45 drop in guests as half a guest. How much of each food item should Nathan order?

Fried chicken- 24 pieces
Deli meats- 3 2/3
Lasagna 10 3/4

Answers

Answer:

25 guests is 2.5 times more than 10

Step-by-step explanation:

Multiply by 2.5

Chicken = 16 x 2.5 = 40

Lasagna = 7 x 2.5 = 17.5 , round to 18

Deli meat = 1.8 x 2.5 = 4.5, round to 5

Sliced cheese = 15 x 2.5 = 37.5, round to 38

Buns = 1 x 2.5 = 2.5, round to 3

Potato salad = 2 x 2.5 = 5

Predict how many times Max will choose a rectangular cracker if he carries out this process 200 times

Answers

Answer:

70 times.

Step-by-step explanation:

The following data were obtained from the question:

SHAPE >>>>>>>>>>>>> FREQUENCY

Oval >>>>>>>>>>>>>>> 18

Rectangle >>>>>>>>>> 14

Star >>>>>>>>>>>>>>> 8

TOTAL >>>>>>>>>>>>> 40

next, we shall determine the probability of chosing a rectangular cracker. This is illustrated below:

Event of Rectangle (nR) = 14

Sample space (S) = 40

Probability of chosing rectangle, P(R) =?

P(R) = nR/nS

P(R) = 14/40

P(R) = 7/20

Therefore, the probability of chosing a rectangular cracker is 7/20.

Thus, if the process were carried out 200 times, the probability of chosing a rectangular cracker will be:

= P(R) × 200

P(R) = 7/20

= 7/20 × 200

= 70

Therefore, max will chose a rectangular cracker 70 times.

Write the equation of the line in point-slope form that passes through the given point with the given slope (1,5); m = -3

Answers

Answer:

y - 5 = -3(x-1)

Step-by-step explanation:

We have the slope and a point

Point slope form is

y-y1 = m(x-x1) where m is the slope and ( x1,y1) is a point on the line

y - 5 = -3(x-1)

A movie theatre needed 980 popcorn
buckets. If each package has 9 buckets,
how
many packages will they need to
buy?

Answers

109 packages of buckets
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