Mathematics High School

A swimming pool holds liters of water. The pool has two drainage pipes. When the pool is completely full, the first pipe alone can empty it in minutes, and the second pipe alone can empty it in minutes. When both pipes are draining together, how long does it take them to empty the pool

Answers

Answer 1

Answer:Pipe 1 is emptying the pool at 600,000/200 = 3000 liters per minute.

The second pipe empties the pool at 600,000/120 =5000 litres per minute. With both pipes the pool will be emptied at 8000 litres per minute. It will therefore take 600,000/8000 = 75 minutes to empty the pool of water when both pipes are draining together.

Step-by-step explanation:

Related Questions

what are 5 expressions that are equivalent to 12x4

Answers

Answer:

6 x 8

48 x 1

24 x 2

12 x 4

16 x 3

Are the 5 expressions equivalent to 12 x 4

Solve for x Round your answer to the newer hundredth.
11.22x - 200 < 347.96
(9th grade Algebra 1)

Answers

X< 48.84

The first answer

HELP

Write one equation that has solutions of x = -3 and x = 2.​

Answers

Answer:

x = -3

Equation: 2x + 2 = -4

x = 2

Equation: 3x - 3 = 3

3 points
Below are dot plots for three different data sets. The standard deviation for
these three data sets are given in the following table.
Standard deviation
Data Set
59
Looking at the dot plots and without calculating the
standard deviations, match the data sets to the
standard deviations.
Standard deviation of 5.9
Da Sot
Data Set
Standard deviation of 3.3
Data Set
10
15
20
Standard deviation of 23

Answers

Answer:

I don't understand this

You start a travelling car wash service. You spend $30 on supplies and plan to charge
$6 for each car you wash. Which of the following equations could be used to find your
profit based on the number of cars you wash?
O y = 6x - 30
O y = 6x
O y = 6x + 30

Answers

Answer:

y= 6x - 30

Step-by-step explanation:

First yu would take the 30 dollars you spent then you will subtract 6 times  how many cars you have done.

Express cos9x cos3x as a sum of two trigonometry function ​

Answers

Step-by-step explanation:

the answer is in the image above

Maureen's dad is 32 years older than Maureen. Six years ago, the sum of their ages was 52. How old is Maureen now?

Answers

Answer:

26

Step-by-step explanation:

The volume for a cylinder is ________, for a cone is _______, and for a sphere is_______

Answers

Here are the formulas

[tex]\boxed{\sf Volume_{(Cylinder)}=\pi r^2h}[/tex]

[tex]\boxed{\sf Volume_{(Cone)}=\dfrac{1}{3}\pi r^2h}[/tex]

[tex]\boxed{\sf Volume_{(Sphere)}=\dfrac{4}{3}\pi r^3}[/tex]

Answer:

The volume for a cylinder is πr2h, for a cone 1/3hπr², and for a sphere is 4/3πr³

Step-by-step explanation:

I hope this will help you

What is the first step to solving the division problem below?

6288 divided by 8

Answers

Answer:

devide it by 2 three times

Step-by-step explanation:

6288/2=3144

3144/2=1572

1572/2=786

i think that's the easiest way to do it

If R is the midpoint of QS, find QS. (2x + 16) and (5x - 17) Brainliest to correct answers. Please no spamming or random answers this is due tmrw thx.

Answers

Answer:

QS = 76

Step-by-step explanation:

Given R is the midpoint of QS , then

RS = QR , that is

5x - 17 = 2x + 16 ( subtract 2x from both sides )

3x - 17 = 16 ( add 17 to both sides )

3x = 33 ( divide both sides by 3 )

x = 11

Then

QS = QR + RS

     = 2x + 16 + 5x - 17

     = 7x - 1

    = 7(11) - 1

    = 77 - 1

    = 76

If the point (12,-2) changes to (-12,-2) in what quadrant would it be located?

Answers

Answer:

i think its Quadrant 3, since their both negatives

Can someone help plz?

Use the diagram to the right.
If AD = 13 and AC = 5y - 64, find the value of y. Then find
AC and DC.

Answers

y= 18 =(13x2+64):5
AC=26=13x2
DC=13=AD

Please help me with my homework!!!!!!

Answers

Answer:

Step-by-step explanation:

Given that x = 3 and y = 2 we can figure these out

3x = 3x3 = 9

5y = 5 x 2 = 10

9+10=19

X times y - 1

3x2-1=5

X*+y* =

3x3+2x2 = 13

2x3*-2 =

2x3x3 - 2 = 16

-5x3+9

= -6

2x2-3+5+3*-3x2 =

9

The greater of two numbers is 6 more than 4 times the smaller. Their sum is 41. FInd the numbers.

Answers

Answer:

7 and 34

Step-by-step explanation:

let x and y be the 2 numbers with x > y

The 2 equations to solve are

x = 4y + 6 → (1)

x + y = 41 → (2)

Substitute x = 4y + 6 into (2)

4y + 6 + y = 41 , that is

5y + 6 = 41 ( subtract 6 from both sides )

5y = 35 ( divide both sides by 5 )

y = 7

Substitute y = 7 into (1)

x = 4(7) + 6 = 28 + 6 = 34

The 2 numbers are 7 and 34

7 and 34 is the answer

Estimate 26 to the nearest tenth. Then locate 26 on a number line.

Answers

Answer:

30 is the nearest tenth of 26

can yall pls go to my other question before this one plss!!​

Answers

Answer:

Ok

Step-by-step explanation:

Suppose Clare labels the books at a constant speed of s books per minute. Write an equation that represents the relatinoship between her labeling speed and the number of minutes it would take her to finish labeling. ​

Answers

it will take her 34 mins coz I said so innit

How is the fear of power reflected
in the Articles of Confederation?
(Posted in math bc nobody answers me in history)

Answers

Answer: It mentions how they  fear the authority government, also I believe u meant "Power of fear"

Step-by-step explanation:

4. Rosa says, “Integers are
whole numbers and their
opposites.” She's correct.
Find the opposites of these
integers: 12, 29
Their opposites are
-12 and -29.
torso panel
Their opposites are
1
and 1.
12 29
torso panel

Answers

Answer:

-12,-29

Step-by-step explanation:

if it is on a numbering . then write the inverse of the number given eg.1 = -1,2 = -2 etc.

- Is this a function? Why or why not?
Independent
Variable
Dependent
Variable
3
6
4
15
+8
12
14
agen 20
22
11
asking for

Answers

9514 1404 393

Answer:

  a) yes (a function)

  b) no (not a function)

Step-by-step explanation:

A functional relationship will have only one value of dependent variable for each value of independent variable. That is, the column on the left can only have one arrow tail per item.

__

a) is a function. Each independent variable maps to one dependent value

b) not a function. Independent variable values 7 and 30 map to two values each.

If △ABC is translated down nine unit(s) and to the right two unit(s), which
of the following would be the new coordinates of point A?

Answers

Answer:

A'(2, -5)

Step-by-step explanation:

we only need to focus on point a (0,4). The translation is moved 9 units down and 2 units to the right, so point (x,y) would become (x+2, y-9). plug 0 and 4 in for x and y respectively, and you get (0+2, 4-9) = (2, -5)

What is the sum of 9.8 and 12.05 please i need help

Answers

The answer is 21.85.
The answer would be 21.85

A square sandbox has an area of 42ft to the power of 2. What is the approximate perimeter of the sandbox to the nearest hundredth?

Answers

Assuming I’m reading your question correctly, that the area is 42 square feet…

The length of each side is then sqrt(42) feet or about 6.480741 feet.

Since a square has four sides, you’d have 4*6.480741 for the perimeter, or about 25.922964 feet.

Rounding this to the hundredths place, you’d have 25.92 feet.

5(x + 1) - 8 = 5x(2-4)

what is the value of x?

a. -5
b. -1/5
c. 5
d. 1/5

Answers

Answer:

d) 1/5

Step-by-step explanation:

5(x + 1) - 8 = 5x(2-4)

5x+5-8 = 5x(-2)

5x-3=-10x

15x = 3

x = 1/5

Answer:

d. 1/5

Step-by-step explanation:

5(x + 1) - 8 = 5x(2-4)

=> 5x + 5 - 8 = 10x - 20x

=> 5x + 20x - 10x = 8 - 5

=> 15x = 3

[tex] = > x = \frac{3}{15} [/tex]

=> x = 1/5 (option d) (Ans)

A swimming pool is 50 m long and 25 m wide. It is 1.2 m deep at shallow end and 2 m deep at the other end.

Answers

Answer:

the answer is in picture

Can someone please explain to me how we do this please...

Answers

Answer:

(7/8, 0)

Step-by-step explanation:

The formula to find the midpoint is (x1+x2/2, y1+y2/2).

(5.5-3.75/2, 2.25-2.25/2)

(1.75/2, 0/2)

(0.875, 0)

(7/8, 0)

Best of Luck!

PLS HELP ITS URGENT

Answers

Answer:

Surface area=48 in^2

See the image for solution

\sqrt{3^{2} - 4^{2} } CAN YOU SOLVE THIS.

Answers

Answer:

√-7

Step-by-step explanation:

√(3² - 4²)

=> √(9 - 16)

=> √-7

\sqrt{9-16} =\sqrt{-7} => no answer

add brackets to make this calculation correct 3+4×6-2=28​

Answers

Answer:

3+4×(6-2)=28

Step-by-step explanation:

7×4=28

Answer:

3+4×6-2=28

3+4×(6-2)=28

7×4=28. answer.

I don't want the answer I just want to know how to do it​

Answers

Answer:

1st- thorn forest - forest which have many thorns it is in rajasthan

2nd- evergreen forest - a forest whose trees are rest green in any season

3rd- Amazon forest - in Amazon forests there are many poisonous snake, frogs etc. like anacondas and wild animals.

Step-by-step explanation:

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