A swimming pool holds 600,000 liters of water. The pool has two drainage pipes. When the pool is completely full, the first pipe alone can empty it in 200
minutes, and the second pipe alone can empty it in 120 minutes. When both pipes are draining together, how long does it take them to empty the pool?

Answers

Answer 1

Answer:

1 hour

Step-by-step explanation:


Related Questions

A 3-column table with 4 rows is shown. The first column has entries Florida, Hawaii, Montana, Oregon. The second column is labeled Population with entries 19,317,568, 1,392,313, 1,005,141, and 3,899,353. The third column is labeled Area (miles squared) with entries 53,927, 6,423, 145,552, and 95,997.
Which statements are true? Check all that apply.

The population density for Montana can be found using the ratio 1,005,141:145,552.
The population density for Oregon can be found using the ratio 95,997:3,899,353.
The population density for Hawaii is greater than the population density for Florida.
The state with the smallest population density is Oregon.
The state with the smallest population density is Montana.

Answers

Answer:

It's the first and last one

Step-by-step explanation:

I just did it

Answer:

A) The population density for Montana can be found using the ratio 1,005,141:145,552.

E)The state with the smallest population density is Montana.

Step-by-step explanation:

hi can anyone help with this question thx
first part of the question is in the pic
second part is here and it is:

York to London is a distance of 175miles
How many miles an hour faster was the first part of the journey?

Answers

Answer:

88 miles per hour

Step-by-step explanation:

12 + 122 = 134 minutes for the entire journey

The total distance was 197 miles.

The avarage speed is the total distance divided by the total time:

Convert the time from minutes to hours dividing it by 60:

134/60 = 2.24 hours

197/2.24 = 87.95 ≈ 88 miles per hour




are my choices correct?



pls check math geniuses!!


Answers

X would be 10, and 2 because:

(10-10) = 0 and (2-2) = 0

The extraneous solution is correct because the equation does not hold true when x is 2 and only hold trues when it is 10.

Edit: the extraneous solution is 2 is because it doesn't hold true to the equation.

Mrs. Shultz went to New York to do her Christmas shopping. She took a cab to go into the city and they charged her a flat fee of $6 plus $2 for every mile. Mrs. Shultz ended up paying the cab driver $30. How many miles did Mrs. Shultz travel?

Answers

Answer:

12 miles

Step-by-step explanation:

30-6=24

24/2=12 miles

In 2007, the number of tickets sold was again 210.
Adult tickets were $2.60 each and student tickets were $1.40 each.
The total amount received from selling the 210 tickets was $480.
How many student tickets were sold?

Answers

Step-by-step explanation:

1.40x + 2.60x = 480

4x =480

x=480÷4

x=120

168 and 312

whats the error? I SOLVED AND CHECKED. Is it correct? Im confused… pls help il will give brainliest

Answers

Answer:

32 in represents perimeter u added length times width once which would only give half of the rectangle

Step-by-step explanation:

2(3w+8+w) =32

6w+16+2w =32

8w+16 = 32

8w=16

w=2

find the greater common factor
2x^2+7x-30

Answers

Answer:

ty

Step-by-step explanation:



Triangle PQR has vertices P(-2,2), Q(8,2) and R(4,6).
(a) Find the equation of the perpendicular bisector of segment PQ.

I got so confused on this question if I could get help it would mean a lot

Answers

9514 1404 393

Answer:

  x = 3

Step-by-step explanation:

You can forget about point R. It does not have any part in this problem, except to add confusion.

The given line PQ has the same y-coordinate values for points P and Q. This means the segment is a horizontal segment. Its perpendicular bisector will be a vertical line through its midpoint.

The midpoint (M) of PQ is ...

  M = (P +Q)/2

  M = ((-2, 2) +(8, 2))/2 = (-2+8, 2+2)/2 = (6, 4)/2

  M = (3, 2)

The vertical line through a point with x-coordinate 3 will have the equation ...

  x = 3

+
In the figure below, if m<1 = (x + 16)° and m The < sign is angle

Answers

Answer:

Step-by-step explanation:

∠1 + ∠BFE = 180   {linear pair}

x + 16 + 3x + 20 = 180

x + 3x + 16 + 20 = 180   {Combine like terms}

4x + 36 = 180

Subtract 36 from both sides

4x = 180 - 36

4x = 144

Divide both sides by 4

x = 144/4

x = 36

Here's a question ~

can anyone give the explanation ?​

Answers

Answer:

See below

Step-by-step explanation:

As per the question we have:

The y - intercept is b = -1The slope has same angle with x- and y - axis.

This can be a function with the slope of m = 1 or m = - 1 as these lines must be perpendicular to each other and make 90°/2 = 45° or 45° + 90° = 135° angle with the x- or y- axis.

So the lines could be:

y = x - 1 ory = -x - 1

Lines must be perpendicular to each other as they are cutting at y intercept -1

Slope intercept form of line

for slope -1

y=-x-1

For slope 1

y=x-1


what is a pair of angles formed when a third line (transversal) intersects two other
lines. These angles are on opposite sides of the transversal are outside the other two lines.

Answers

Answer:

Alternate exterior angle

Step-by-step explanation:

THis is literally the only option

You have

Alternate interior

Alternate exterior

Exterior

Interior

Corresponding

Well we know it’s on the outside so correpsoning, interior, and alternative interior are out.

We only have exterior and alternative exterior.

Since it’s opposite sides its alternative exterior

\frac { 3 ^ { p + 1 } - 3 ^ { p } } { 2 \times 3 ^ { p } } = 1​

Answers

Answer:

Given equation:

[tex](3^{p+1} - 3^p) /(2 *3^p) = 1[/tex]

Solving for p:

[tex]3^{p+1} - 3^p = 2 *3^p[/tex][tex]3*3^p - 3^p = 2 *3^p[/tex][tex]2 *3^p =2 *3^p[/tex]

p - any real number

We can state the initial expression is correct for any value of p.

Answer:

True for all p

Step-by-step explanation:

Given equation:

  [tex]\dfrac{3^{p+1}-3^{p}}{2 \times 3^{p}}=1[/tex]

Multiply both sides by [tex]2 \times 3^p[/tex]:

[tex]\implies 3^{p+1}-3^p=2 \times 3^p[/tex]

Add [tex]3^p[/tex] to both sides:

[tex]\implies 3^{p+1}-3^p+3^p=2 \times 3^p+3^p[/tex]

[tex]\implies 3^{p+1}=3 \times 3^p[/tex]

Rewrite 3 as 3¹:

[tex]\implies 3^{p+1}=3^1 \times 3^p[/tex]

[tex]\textsf{Apply exponent rule} \quad a^b \cdot a^c=a^{b+c}[/tex]

[tex]\implies 3^{p+1}=3^{1+p}[/tex]

[tex]\implies 3^{p+1}=3^{p+1}[/tex]

[tex]\textsf{Apply exponent rule} \quad a^{f(x)}=a^{g(x)} \implies f(x)=g(x):[/tex]

[tex]\implies p+1=p+1[/tex]

Subtract 1 from both sides:

[tex]\implies p+1-1=p+1-1[/tex]

[tex]\implies p=p[/tex]

Therefore as both sides are equal, true for all p.

{[(3x+8)+6(2.5x-3)]}

Answers

Answer: The answer is 18x + 26

Step-by-step explanation:

What I did was simplify the Expression of (3x+8)+6(2.5x-3) then combine the terms and last evaluate the Expression.

Tickets to see a movie cost $5 for children and $8 for adults. The equation 5x + 8y = 80 represents the number of children (x) and adults (y) who can see the movie with $80.
If no adults see the movie, how many children can see the movie with $80?

Answers

Answer:

40

Step-by-step explanation:

Answer:

44444444444444444444

if Brian is driving 50 miles per hour how far did he drive​

Answers

Answer:

2.5 km long after 59 miles

Answer:

50 miles

Step-by-step explanation:

on average, what value is expected for the t statistic when the null hypothesis is true?

Answers

Answer:

0

Step-by-step explanation:

Please show all steps to 2- (-1)

Answers

Answer:

3

Step-by-step explanation:

2-(-1)=2+1=3

Román preguntó en servicio al cliente si le podían fabricar los Zetas con medidas especiales aló cual respondieron que si él requiere una loseta cuadrada con un aria de 225 m² cuanto miden los lados de la loseta que le fabricaron

Answers

Answer:

Los lados de la lista cuadrada que le fabricaron  miden 15 m

Step-by-step explanation:

Hola! Sabemos que la loseta tiene área cuadrada y que el área del cuadrado está dada por:

Ac = a²

Donde a es la medida de los lados del cuadrado.

Para hallar la medida de la lista cuadrada despejamos a aplicando raíz cuadrada a ambos miembros:

a = √(Ac)

a = √(225 m²)

a = 15 m

Los lados de la lista cuadrada que le fabricaron  miden 15 m

Respuesta:  Los lados de la lista cuadrada que le fabricaron  miden 15 m

Explicación paso a paso:

Hola! Sabemos que la loseta tiene área cuadrada y que el área del cuadrado está dada por:

Ac = a²

Donde a es la medida de los lados del cuadrado.

Para hallar la medida de la lista cuadrada despejamos a aplicando raíz cuadrada a ambos miembros:

a = √(Ac)

a = √(225 m²)

a = 15 m

Los lados de la lista cuadrada que le fabricaron  miden 15 m

look at the figures how can u prove the triangles are congruent is it
A)

B)

C)

Answers

B) because the lines on the triangles show that they are equal in length and therefore congruent (the same)

Answer:

ABC by the SSS postulate

ASA  rule shows 1 side is congruent and 2 angles congruent

SAS rule shows 2 sides are congruent and 1 angle congruent

SSS rule shows 3 sides are congruent as angles already proven ASA and SAS

What Is the slope of the line on the graph?​

Answers

Answer:The slope equals the rise divided by the run: . You can determine the slope of a line from its graph by looking at the rise and run. One characteristic of a line is that its slope is constant all the way along it. So, you can choose any 2 points along the graph of the line to figure out the slope.

Step-by-step explanation:

HELPP FAST im tired and it's due realy really really soon

Answers

Answers:

The linear inequality is 2y - 3x >_ -2

Biancas number line is C

By which rule are these triangles congruent. A. AAS B. ASA C. SAS D. SSS

Answers

The answer is D. SSS

Consider the matrix.
6 3
5 4
What is the value of |C|?
|C|=

Answers

Answer:

e0

Step-by-step explanation:

why is this not a polynomial?
3^x - x/3 + x^3

Answers

Answer:

It is not a polynomial because the polynomial is the term given to an expression which has coefficients as well as variables with powers having a non-negative entegral value or we can say natural number. The power of the variable × here is not an integer so 3/× is not a polynomial

Step-by-step explanation:

I hope I helped you

Answer:

below

Step-by-step explanation:

-x/3 + x³ is polynomial

3ˣ IS NOT a polynomial, it makes the function be an  "exponential function", which does not fit the criteria of polynomial definition.

by what percentage did the high temperature increase from friday to saturday ? round ur answer

Answers

Answer:

Step-by-step explanation:

First, you must find the actual decrease in temperature.

Decrease = Yesterday's temperature - Today's temperature

Decrease = 80 - 75

Decrease = 5 degrees

Now, find the percentage decrease.

% Decrease = Actual decrease / Yesterday's temperature x 100

% Decrease = 5/80 x 100

% Decrease = 0.0625 x 100

% Decrease = 6.25 %

So, the percent decrease in high temperature from yesterday to today is 6.25%

I'll give brainliest if correct.
File included down below

Answers

No solution. The first two equations would need to equal each other, but they don't, so it is mathematically impossible.

Answer: k=0

Step-by-step explanation:

[tex]kx+z=3\\\\-z -z[/tex]

[tex]kx=3-z[/tex]

[tex]\frac{kx}{k} =\frac{3}{k}-\frac{z}{k}[/tex]

[tex]x=\frac{3-z}{k}[/tex]

Feel free to let me know if it's wrong

You start at (9, 5). You move left 3 units and up 1 unit. Where do you end?

Answers

Hello!

(9,5)

3 units left: (6, 5) (we subtract 3 from the x-coordinate)

1 unit up: (6, 6) (we add 1 to the y-coordinate)

Hope this helps you!

~Just a joyful teen

[tex]SilentNature[/tex]

-
What is the equation of the line that passes through the point (-4,-7) and has a
slope of?

Answers

Answer:

y = -4 x -9

Step-by-step explanation:

If it wrong i'm sorry

Write a sentence for the equation.

2(t+4q)=2q+4t

Answers

Two point three tens times m equals zero point forty six hundredths

The given equation in the form of a statement can be written as Two times of the sum of the t and 4 times of q is equal to the sum of two times of q and  four times of t.

What is an equation?

An equation is formed when two equal expressions are equated together with the help of an equal sign '='.

The given equation can be written in the form of an statement as:

Two times of the sum of the t and 4 times of q is equal to the sum of two times of q and  four times of t.

Hence, the given equation in the form of a statement can be written as Two times of the sum of the t and 4 times of q is equal to the sum of two times of q and  four times of t.

Learn more about Equation here:

https://brainly.com/question/14686792

#SPJ2

whats the answer for 6x+4y=−12

Answers

The answer is Y=-3/2x-3
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