An inlet pipe on a swimming pool can be used to fill the pool in 15 hours. The drain pipe can be used to empty the pool in 20 hours. If the pool is [tex]\frac{1}{3}[/tex] filled and then the inlet pipe and drain pipe are opened, how many more hours would it take to fill the pool? Round your answer to two decimal places, if needed.


_____________ hours

Answers

Answer 1

Answer:

40 hours

Step-by-step explanation:

Rate of filling is 1/15Rate of draining is 1/20

If both lines are open the rate of filling is:

1/15 - 1/20 = 4/60 - 3/60 = 1/60 per hour

Since tank is 1/3 full we need to fill the remaining 2/3 of it.

Time required:

2/3 : 1/60 = 2/3*60 = 40 hours

Related Questions

Solve using proportions

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4:3 means 4/7 of the class are men

4/7 of 490 is 280

cuantos paquetes de 5/8 de kilo harán falta para envasar 125 kilos de harina

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Step-by-step explanation:

dcfhhjjvcdddfhjkhfsazgjhsswrup07532490ojdhj

Simplify the following:

[tex]\sqrt{50} x^{2} y^{3}[/tex]

Answers

Answer:

5xy[tex]\sqrt{2y}[/tex]

Step-by-step explanation:

Answer: simplify

5√2x² y²

solve pls brainliest

Answers

Answer:

Below.

Step-by-step explanation:

a. 360 - 168

= 192 ft above sea level.

b. -168 - (-132) = -36.

36 feet lower.

Solve for the variable

9b+4−8b=7

b = ?

Answers

The answer is 3
B+4=7
B=7-4
B=3

please help algebra ii!

Answers

Answer:-4

Step-by-step explanation:we can easily see it on the graph

Yeah and that is what’re the point is on the graph

Choose the 3 correct answers please! ( Branliest )

Answers

Answer:

Option A,B,E are equivalent.

Step-by-step explanation:

What we are given: Expression

To find : Which expressions are equivalent to given expression ?

Solution :

We solve the expression and check,

A) Yes it is equivalent.

B) Yes it is equivalent.

C) No it is not equivalent.

D) No it is not equivalent.

E)  Yes it is equivalent.

Therefore, Option A,B,E are equivalent.

Step-by-step explanation:

Hope this Helps =)

Answer:

A , C , E

Step-by-step explanation:

Answer A :

[tex] - 30(3 + 2w) \\ - 30(3) - 30(2w)\\ - 90 - 60w[/tex]

It's equivalent. ✔️

Answer B :

[tex]( - 9 - 6w) - 10 \\ - 9 - 6w - 10 \\ - 19 - 6w[/tex]

It's not equivalent. ✖️

Answer C :

[tex] - 3(30 - 20w) \\ - 3(30) -3(20w) \\ - 90 - 60w \\ [/tex]

It's equivalent. ✔️

Answer D :

[tex](6 + 4w) \times 15 \\ 15(6)+ 15(4w) \\ 90 + 60w \\ [/tex]

It's not equivalent. ✖️

Answer E :

[tex] - 20(4.5 + 3w) \\ -20(4.5) -20(3w) \\ - 90 - 60w \\ [/tex]

It's equivalent. ✔️

MATH WEEK 5 DISCUSSION

Answers

5 ————————————————————————-

solve for the value of n
(9n) (8n+8)

Answers

Answer:

undoable

Step-by-step explanation:

theres no =

the price is three for $1.48 how much will one pepper cost?

Answers

Answer:

$0.4933

Step-by-step explanation:

i guess

Just divided by 3 ;)

math read please IMA WRITE USELESS WORDS CONTINUE

Answers

Basically just show using numbers how the shapes are not alike like what makes them different make some numbers up and do it just like that and explain how the shapes won’t Align with each other

CAN Someone PLS HELP ME PLSSSSSSSSSSSS

Answers

Answer: where is the rest of the problem

Step-by-step explanation:

-$107.85

In a school 2/3 parts of the total numbers of students. 3/10 parts are between 8 to 12 years and the remaining are above 12 years . What parts of the students are above the age of 12 years.​
ans:3/10​

Answers

3/10

As you know the answer already I don't think you need any further explanation :)

I really need assistance with this question

Answers

Answer:

first

Step-by-step explanation:

Lumen

Managerial Accounting

Chapter 5: Cost Behavior and Cost-Volume-Profit Analysis

5.6 Break – Even Point for a single product

Finding the break-even point

A company breaks even for a given period when sales revenue and costs charged to that period are equal. Thus, the break-even point is that level of operations at which a company realizes no net income or loss.

A company may express a break-even point in dollars of sales revenue or number of units produced or sold. No matter how a company expresses its break-even point, it is still the point of zero income or loss. To illustrate the calculation of a break-even point watch the following video and then we will work with the previous company, Video Productions.

Before we can begin, we need two things from the previous page: Contribution Margin per unit and Contribution Margin RATIO. These formulas are:

Contribution Margin per unit = Sales Price – Variable Cost per Unit

Contribution Margin Ratio = Contribution margin (Sales – Variable Cost)

Sales

Break-even in units

Recall that Video Productions produces DVDs selling for $20 per unit. Fixed costs

Jeffrey makes 3% commission on
his sales. If his sales total $1800
this week, how much money will he
make?

Answers

Answer:

He will make $54

PLEASE HELP ITS MATH THANK YOUUUU HURRY

Answers

You need to get this app, it’s so helpful!

Label the figure.
20,24,114,702

Answers

The first diagram area= 810 perimeter= 114
The second diagram area= 35 perimeter= 24

The probability that record drawn randomly from a standard deck of 52 cards is a four

Answers

Answer:

1/13

Step-by-step explanation:

no.of sample space n(S) = 52

no.of favourable cases n(E) = 4

probability of getting a four p(E) = n(E) / n(s)

or, 4/52

or 2/26

or 1/13

therefore,the probability of getting a four is 1/13.

Homework help!!!!!!!!

Answers

Answer:

u=-1

Step-by-step explanation:

if you replace with a or b the answer on the left side is actually bigger since it is closer to 0 than -20. same with choice d

choice c makes -12-28 which is a smaller value than -20

the answer is u= -1

-

What do you call 7 in this division problem?
28 = 7 = 4
O A. Dividend
B. Divisor
C. Quotient
D. Product
SUBMIT

Answers

It’s would be b Divisor

Which sign makes this number sentence true?

|-56| __ |56|
A. >
B. <
C. =
D. x

Answers

C. =, the absolute value of a number is always positive

When converted to a household measurement, 9 kilograms is approximately equal to a

Answers

Abt 317.4 oz or 19.4 lb

Answer:

D) 19.8 lbs

Explanation:

1kg in household measurement is equal to 35.274 ounces. 35.274*9=317.466 ounces.

1kg is also equal to 2.205 lbs. 9*2.205=19.8416

9 kg is also equal to 9000 grams, but grams are not a part of the household measurement system

a) 9000 grams. b) 9000 ounces. c) 19.8 ounces. d) 19.8 pounds.

This leaves us with 19.8 lbs

Simplify by using the product, quotient, and power rules

Answers

Answer:

3y^5

Step-by-step explanation:

I NEED HELP PLS.......

Answers

-4x - 2.4

explanation: 1.3 - 3.7 = -2.4
then you leave the -4x by itself since it’s the only variable

write an equation of the line passing through the point( 3, -1) and parallel to the line y=2/3 x-5

Answers

Answer:

[tex]y = \frac{2}{3} x - 2[/tex]

Step-by-step explanation:

find The y-intercept

[tex] - 1 = \frac{2}{3} (3) + b \\ - 1 = 1 + b \\ b = - 2 \: \: \: \: y - intercept[/tex]

The equation of the line

[tex]y = \frac{2}{3} x - 2[/tex]

suzanne bought 50 apples at the apple orchard.She bought 4 times as many red apples as green apples. how many more red apples than green apples did suzanne buy?

Answers

Answer:

30 more red apples

Step-by-step explanation:

let 'a' = # of green apples

let '4a' = # of red apples

a + 4a = 50

5a = 50

a = 10

# of red apples:  10(4) = 40

# of green apples:  10

add the fraction 9/+1 1/6=10 1/4​

Answers

Answer:

41/4

Step-by-step explanation:

Can someone answer this please I need it ASAP

Answers

Answer:

Frank scored 10 runs

B) the mean is 20

Step-by-step explanation:

PLEASE HELP ITS MATH THANK YOUUUU

Answers

Answer: 10 meters

Explanation:

29 cm : blank meters

So how do we get from 348 cm to 29 cm?

To figure this out we divide.

348 divided by 28 = 12

we divided by 12 so we do the same with 120

120 divided by 12 = 10

So that’s the answer.

I hope this makes sense and helps you :)

A seed weighs 0.00002421 ounces. What is this value in correct scientific notation?
A) 2421 x 108
B) 2.421 x 105
2.421 x 10-5
D 2421 x 10
-8

Answers

Answer:

C) 2.421 x 10^-5

Step-by-step explanation:

A negative exponent on a power of ten will make the decimal point go back that amount of times to the left, making it a lesser number. A positive exponent will cause it to move to the right, making the number greater. We aren’t going to need to make any of the numbers being multiplied greater, so we can eliminate the first two. Then we need to solve the others. We can do this by moving the decimal the amount of times that we see the exponent equals. Since C is -5, we move it to the left 5 times, and get the weight of the seed; 0.0002421.

Hope This Helped!

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