suppose electric power is supplied from two independent sources which work with probabilities 0.4, 0.5, respectively. if both sources are providing power enough power will be available with probability 1. if exactly one of them works there will be enough power with probability 0.6. of course, if none of them works the probability that there will be sufficient supply is o.

Answers

Answer 1

Answer:

What is the question

Step-by-step explanation:


Related Questions

Find the LCM of
[tex]8 {a}^{2} {b}^{3} {f}^{4} [/tex]
and
[tex]3abg[/tex]

Answers

The LCM of 8a²b³f⁴ and 3abg is 24a²b³f⁴g.

What is defined by the term LCM?

LCM is an abbreviation for "Least Common Multiple." The smallest multiple which two or even more numbers have in common is defined as the least common multiple.

Consider the following two integers: 2 and 3.2 multiples: 2, 4, 6, 8, 10, 12, 14....Multiples of three: 3, 6, 9, 12, 15, 18, 21, 24, 27, 30, and so on.The numbers 6, 12, and 18 are all common multiples of 2 and 3. The smallest number is six. As a result, the least common multiple of 2 and 3 is 6.The smallest number divisible both by numbers is the LCM of two numbers.

Figuring the lowest common denominator (LCD) of 2 or even more fractions is a common application of LCM.

It is useful for adding, subtracting, as well as compare different or more fractions.

For the given question, the two numbers are given as; 8a²b³f⁴ and 3abg.

The least common multiple which will divide both the numbers are; all the values with their highest power.

LCM = 24a²b³f⁴g.

Thus, the LCM is found as 24a²b³f⁴g.

To know more about the LCM, here

https://brainly.com/question/8393834

#SPJ9


A road sign in Canada gives the distance to Toronto as 140 kilometers. What is this distance to the nearest mile?

Answers

Converting 140 kilometers to miles, the distance from a road sign in Canada to Toronto is 87 miles.

In mathematics, conversion is the process of changing the value of one form or unit to another. It can be changing ones unit of length, weight, volume or even currency to another.

A conversion factor is a number used to change one set of units to another, either by multiplying or dividing.

From the problem, we must convert the distance of 140 kilometers into miles.

Converting kilometers to miles, we must use the conversion

1 kilometer = 0.621371 mile

140 kilometers = 140 (0.621371 mile)

140 kilometers = 86.992 miles

Rounding off to the nearest mile,

140 kilometers = 86.992 miles = 87 miles

To learn more about conversion: https://brainly.com/question/97386

#SPJ4

Imagine that you are a teacher grading your students’ assignments. The following questions were turned in with incorrect answers. Trace through the process of solving them to discover where your students made a mistake in their order of operations. Which step of PEMDAS did they do out of order? Explain.

(6-2)^2+12-3^2

The correct answer is 19
student answer 97

Answers

The student did the subtraction step of PEMDAS out of order.

What is PEMDAS?

PEMDAS is a rule regarding precedence of operations, given as follows, from highest to lowest precedence.

Parenthesis.Exponents.Multiplication/Division.Addition/Subtraction.

In this problem, the expression is:

(6 - 2)² + 12  - 3².

The student reached an answer of 97 as follows:

(6 - 2)² + 9² = 4² + 9² = 16 + 81 = 97.

The student did the subtraction first, hence the student did the subtraction step of PEMDAS out of order.

The correct solution is:

(6 - 2)² + 12  - 3² -> Solve the Parenthesis.

4² + 12 - 3² -> Solve the Exponents.

16 + 12 - 9 -> Solve the Addition and Subtraction.

19.

More can be learned about precedence of operations at https://brainly.com/question/28175493

#SPJ1

See attachments!
Paolo wrote the following equation for the perimeter of a rectangle.
Which equation is equivalent to the equation Paolo wrote?

Answers

Answer:

p = 2 + l w

Step-by-step explanation:

Write the composite function in the form f(g(x)). [identify the inner function u = g(x) and the outer function y = f(u).] y = 3 1 5x

Answers

Answer:

It's really hard to really solve cause I'm a student in learning.

25 points plus brainliest

Answers

Answer:

i think b

Step-by-step explanation:

Answer:

B. y = 2x + 8

Step-by-step explanation:

14x - 7y = 1

7y = 14x - 1

y = 2x - 1/7

If two lines are parallel, their slopes are equal.

With m = 2, x = -2, y = 4

y = mx + b

4 = 2(-2) + b

4 = -4 + b

b = 8

so y = 2x + 8

1/3 ÷ 8 =
what s the answer

Answers

Answer:

0.0416¯

Step-by-step explanation:

after the 1 six is being repeated. Hope this helps! :)

Which number appears farther to the right on the number line?
a) -53/2
b) -1
c) -100

Answers

Answer:

-1

Step-by-step explanation:

-1 has the greatest value

Pierce sold six gallons of paint for $75.78. What was the price per gallon of the paint?

Answers

$12.63 is the answer

The probability a d-link network server is down is 0.10. if you have three independent servers, what is the probability that at least one of them is operational?

Answers

The probability that at least one of them is operational is 0.999

Probability:

Probability means the possibility of happening the particular event. So, it can be written as the fraction of possible event by the total number of event.

Given,

The probability a D-Link network server is down is 0.10.

Here we need to find if you have three independent servers, what is the probability that at least one of them is operational.

Let D be an event that a D-Link network server is down.

It is given that the probability that a D-Link network server is down is

=> P(D) = 0.10

The number of independent servers

=> (n) = 3

The probability that none of the servers is working is

=>P(None) = P(D) x P(D) x P(D)

=> P(None) = 0.10 x 0.10 x 0.10

=> P(None) = 0.001

The probability that at least one of them is operational is given as

=> 1 - P(None)

=> 1 - 0.001

=> 0.999

Therefore, the probability that at least one of them is operational is 0.999.

To know more about Probability here.

https://brainly.com/question/11234923

#SPJ4

a traffic study has shown that the probability that 55 cars will pass over a small bridge in a 4-4-minute period is 0.16.0.16. what are the odds against exactly 55 cars passing over the bridge in that time?

Answers

It’s 30 I took the test


Georgia is on the prom committee. She wants to hang a dozen congruent triangles from the ceiling so that they are parallel to the floor. She sketched out one triangle on a coordinate plane with coordinates (0,4),(3,8) , and (6,0) . If each triangle is to be hung by one chain, what are the coordinates of the point where the chain should attach to the triangle?

Answers

The coordinates of the point where the chain should attach to the triangle are (3, 4).

Given that, a triangle is on a coordinate plane with coordinates (0,4), (3,8), and (6,0).

We need to find the coordinates of the point where the chain should attach to the triangle.

What is the centroid of the triangle?

The centroid is the centre point of the object. The point at which the three medians of the triangle intersect is known as the centroid of a triangle. It is also defined as the point of intersection of all three medians. The median is a line that joins the midpoint of a side and the opposite vertex of the triangle. The centroid of the triangle formula is G = ((x1+x2+x3)/3 , (y1+y2+y3)/3).

Now, centroid = ((0+3+6)/3, (4+8+0)/4)

=(3, 4)

Therefore, the coordinates of the point where the chain should attach to the triangle are (3, 4).

To learn more about the centroid of the triangle visit:

https://brainly.com/question/22503106.

#SPJ1

NEED HELP

Which of the following is and isn't a function? ( There may be more than one answer ). Explain Clearly

Answers

Using the function concept, we have that:

Items, a, and d are functions.Item b and c are not functions.

When does a relation represents a function?

A relation represents a function when each value of the input is mapped to only one value of the output.

On a graph, it means that each value of x is mapped to only one value of y, that is, there are no vertically aligned points on the graph.

For this problem, relation c does not represent a function, as there are multiple values of x are related to two values of y, and there are vertically aligned points on the graph.

In item b, when x = 6, there are two values of y, hence this is also not a function. For items a and d, each value of x is mapped to only one value of y, hence they are functions.

More can be learned about relations and functions at https://brainly.com/question/12463448

#SPJ1

I need help I need it in 1 min please help 13 and 14

Answers

i) 9⁻⁴=1/6561

ii1/2⁻⁶=64

Positive exponent: An exponent defines the number of times a number is multiplied by itself. For example, 32. It means that the number 3 has to be multiplied twice. Here, the number 3 is a base number and 2 is an exponent. The exponent can be positive or negative.

Nagative exponent: We know that the positive exponent tells us how many times a number is multiplied by itself. Whereas, the negative exponent tells us how many times we have to divide the base number. In other words, the negative exponent describes how many times we have to multiply the reciprocal of the base. An example of negative exponents is 3-2.

Thus, x-2 is written as (1/x²).

i)Rewrite expression using a positive exponent  9⁻⁴

We know that positive exponent.

9⁻⁴=1/94

9⁻⁴=1/6561.

ii)Rewrite expression using a positive exponent 1/2⁻⁶

1/2⁻⁶=26

⇒1/2⁻⁶=64.

To learn about more about the reciprocal of the divisor visit: brainly.com/question/13595413 #SPJ9.

Use the graph of each function to estimate intervals to the nearest 0.5 unit on which the function is increasing, decreasing, or constant. Support the answer numerically.

f(x)=x^3-x^2-2x+3

Answers

It appears that from graph that the function is increasing in the interval (-∞,-1) and (1,∞). Also the function is decreasing in the interval (-1,1) and (0.0.5).The function is not constant anywhere.

To check if this is correct, we will find the relative extrema of the function,

f(x) = x³-x²-2x+3

Find it derivative f'(x) = 3x²-2x-2

f'(x) = 0

⇒ x = 2 ± √(4+24)/3

      = 3.77 , -1.1

Find the second derivative f''(x) = 6x -2

f''(3.77) = 20.62>0

So the function has a relative minimum at x = 3.77.

f''(-1.1) = -8.6<0

So the function has a relative maximum at x = -1.1

Now we can conclude with the intervals where the function is increasing is before the relative maximum and after the relative minimum.

i.e., the intervals (-∞,-1) and (3.5,∞) [rounding to the nearest 0.5 unit]

So the interval in which the function is decreasing is between the relative maximum and minimum. i.e.,  the interval (-1, 3.5)

The function is nowhere constant.

Learn more about increasing and decreasing intervals of functions at https://brainly.com/question/1503051

#SPJ4

REWRITE USING SET BUILDER NOTATION

a) the set of natural numbers less than 10

b) the set of integers greater than -7 but less than 7

c) the set of whole numbers greater than zero but less than or equal to 20​

Answers

Answer:

See explanation

Step-by-step explanation:

n=number

a. { n ∈ N | n<10 }    ==> N denotes natural numbers

b. { n ∈ Z | -7<n<7 }    ==> Z denotes integers

c. {n ∈ W | 0<n<=20 }     ==> W denotes whole numbers

find the area and circumference of each circle. Use pi in your answer (example: radius = 8, or diameter = 14).

Answers

The area of the circle is 64π square unit and the circumference is 16π units

Calculating area and circumference of a circle

From the question, we are to find the area and circumference of the circle

The area of a circle is given by the formula,

A = πr²

Where A is the area

and r is the radius

Using the parameter, radius = 8

Then,

A = π × 8²

A = 64π square unit

Calculating the circumference

The circumference of a circle is given by the formula

C = 2πr

Where C is the circumference

and r is the radius

Thus,

C = 2  × π × 8

C = 16π units

Hence, the area of the circle is 64π square unit and the circumference is 16π units

Learn more on Calculating area an circumference here: https://brainly.com/question/15673093

#SPJ1

2. Andrew made an error in determining the polynomial equation of smallest degree whose roots are 3, 2+2i and .

Review Andrew’s work, identify the error and correct all work from that point forward that is affected by this error. Include at least one sentence explaining his error. Use proper mathematical vocabulary, appropriately
(x-3)(x+2+2i)(x+2-2i)=0
(x-3)(x^2+4x+8)=0
x^3+x^2-4x-24=0)

Answers

Using the Factor Theorem, Andrew's error was at the application of the minus signal to the complex roots, and the polynomial of degree 3 is of f(x) = x³ - 7x² + 20x - 24.

What is the Factor Theorem?

The Factor Theorem states that a polynomial function with roots [tex]x_1, x_2, \codts, x_n[/tex] is given by:

[tex]f(x) = a(x - x_1)(x - x_2) \cdots (x - x_n)[/tex]

In which a is the leading coefficient.

For this problem, the roots are given as follows:

[tex]x_1 = 3[/tex].[tex]x_2 = 2 + 2i[/tex].[tex]x_3 = 2 - 2i[/tex].

Hence the polynomial is given as follows, considering leading coefficient a = 1:

[tex]f(x) = (x - 3)(x - 2 - 2i)(x - 2 + 2i)[/tex]

His error was at the application of the minus signal to the complex roots.

Then:

f(x) = (x - 3)[(x - 2)² - (2i)²]

f(x) = (x - 3)(x² - 4x + 4 + 4)

f(x) = (x - 3)(x² - 4x + 8)

f(x) = x³ - 7x² + 20x - 24.

More can be learned about the Factor Theorem at https://brainly.com/question/24380382

#SPJ1

44. the total cost for tuition plus room and board at state university is 2,584 dollars. tuition costs 704 dollars more than room and board. what is the tuition fee?

Answers

If total cost for tuition plus room and board at state university is 2,584 dollars and  tuition costs 704 dollars more than room and board, then the tuition fees is 1644 dollars

Given,

The total cost for tuition plus room and board = 2584 dollars

Consider the cost for room and board as x

Tuition costs 704 dollars more than room and board.

Therefore the tuition fees = 704+x

Then the total cost = Cost for tuition fees+ Cost for room and board

2584 = (704+x)+x

2584= 704+2x

2x= 1880

x= 940  dollars

Then the tuition fees = 704+x

=704+940

=1644 dollars

Hence, if total cost for tuition plus room and board at state university is 2,584 dollars and  tuition costs 704 dollars more than room and board, then the tuition fees is 1644 dollars

Learn more about total cost here

brainly.com/question/14927680

#SPJ4

Matt had 6 books to read. Each book has 11 pages. He has already read 60 pages. How many pages does he have left to read? The answer

Answers

i am pretty sure 6. 11x6=66 and he’s read 60
i think he has 6 left to read

the air quality index, or aqi, measures how polluted the air is in your city and assigns a number based on the quality of the air. over 100 is "unhealthy".the following quadratic regression equation gives us an estimate of n, which is the number of days the aqi exceeded 100 a particular year. we will use this equation to estimate the number of days the aqi was over 100 in the year 1995.n

Answers

Final answer:

The estimated number of days the aqi was over 100 in the year 1995 is calculated as 135 days.

Is linear regression quadratic regression ?

Simple linear regression is expanded upon in quadratic regression. While quadratic regression has the drawback of requiring more data points to ensure that your data falls into the "U" shape, linear regression can be carried out with as few as two points (i.e., enough points to draw a straight line).

In situations where the second differences are constant, a quadratic model is adequate. We can ascertain the degree of the model for the data by identifying variations between the dependent values. The model will be linear if the initial difference has the same value. The model will be quadratic if the second difference has the same value as the first.

Explanation:

The air quality index, or aqi, calculates a number depending on how clean or dirty the air. Then it is estimate n, the number of days the aqi exceeded 100 in a specific year is evaluated and calculated as it is actually as 135 days on edge.

To learn more about quadratic regression , visit ,

brainly.com/question/2005465

#SPJ4


Write the number 86,360,000 using the number word "million" and then round to one decimal place.

million
M

Answers

The number 86,360,000 using the number word "million" and then round to one decimal place is Eighty-six million three hundred sixty thousand.

The writing style used to express numbers in India is known as the Indian numeral system. In this case, numbers are divided into several time periods or groupings. This numbering scheme uses ten distinct symbols, including the digits 0, 1, 2, 3, 4, 5, 6, 7, 8, and 9.

The order of the digits when using the Indian number system is one, ten, hundreds, thousands, ten thousand, lakhs, lakhs, crores, and crores. The era and locations are shown in the table below according to the amount of digits in a number.

Given number: 86,360,000

Eighty-six million three hundred sixty thousand in numbers

To learn more about number system refer the link:

#SPJ9

Heyy! Could you guys possibly help with the answer to this question? I’m stuck.

Answers

The codes of the countries are 34, 35 and 36

How to determine the codes of the countries?

The given parameters are

Sum of codes = 105

Where the numbers are consecutive numbers

This means that

B = A + 1

C = A + 2

So, we have

A +A + 1 + A + 2 = 105

Evaluate the like terms

3A = 102

Divide through by 3

A = 34

So, we have

B = A + 1 = 34 + 1 = 35

C = A + 2 = 34 + 2 = 36

Hence, the codes of the countries are 34, 35 and 36

Read more about consecutive numbers at

https://brainly.com/question/10853762

#SPJ1

Homework help please

Answers

Answer:

Step-by-step explanation:

180

Simplify an expression for the perimeter of the rectangle shown.
8.6x + 3
5.2
4
Write your answer with NO spaces:

Answers

The perimeter of the rectangle is P = (17.2x₊16.4).

Given that,

Length, l = 8.6x₊3

Width, b = 5.2

In the formula P=2l+2w, where l is the rectangle's length and w is its width, the perimeter P of a rectangle is determined. Using the formula A=l×w, where l is the length and w is the width, we can determine the area A of a rectangle.

We need to find the expression for the perimeter of the rectangle. The formula for the perimeter of the rectangle is given by :

P=2(l₊b)

Putting values of l and b in the above formula:

p = 2(8.6x ₊ 3 ₊ 5.2)

= 2(8.6x ₊ 8.2)

= 2(8.6x) ₊ 2(8.2)

= 17.2x ₊ 16.4

So, the required perimeter of the rectangle is 17.2x₊16.4.

Learn more about Area Perimeter here:

brainly.com/question/25292087

#SPJ9

Find the distance between the two points rounding to the nearest tenth (if necessary).
(-6, 5) and (3,-7)

Answers

Answer: 15

Step-by-step explanation:

Distance formula: a^2+b^2=c^2 where c is the distance.

a^2=

(-6-3)^2=

(-9)^2=81

b^2=

(5-(-7))^2=

(5+7)^2=

12^2=144

c^2=81+144=225

If c^2=225, then what's c?

c=15

total u.s. land area is 3.537 million square miles. what percentage of u.s. land is national park system land ?

Answers

The percentage of u.s. land is national park system land is approximately 41.8%

Percentage

Convert acres to square miles

945,000,000 acres = 1476562.5 square miles

Percentage of u.s. land is national park system land = national park system land / Total U.S. land area × 100

= 1476562.5 square miles / 3,537,000 square miles × 100

= 0.417461832061068 × 100

= 41.74618320610687%

Approximately,

41.8%

Therefore, the percentage of u.s. land is national park system land is approximately 41.8%

Complete question:

Total U.S. land area is 3.537 million square miles. Total U.S. national park system land occupies 954 million acres. What percentage of U.S. national park system land?

Learn more about percentage:

https://brainly.com/question/11360390

#SPJ4

W
Which graph represents the solution of the system

{x² + y² = 4

x-y = 1

Answers

The graph is plotted in the following figure .

To plot a graph we need 2 pts .

First eqn is of a circle ( [tex]x^{2}[/tex] ) + ( [tex]y^{2}[/tex] ) = 4

Second eqn is of a line x - y = 1

The center of circle is ( 0 , 0 )

The circle passes through ( 2 , 0 ) , ( 0 , 2 ) , ( - 2 , 0 ) , ( 0 , - 2 ) .

The line passes through ( 0 , 1 ) , ( 0 , - 1 ) .

To learn more on circles plotting follow link :

https://brainly.com/question/24375372

#SPJ9

Bob is interested in examining the relationship between the number of bedrooms in a home and its selling price. After downloading a valid data set from the internet, he calculates the correlation. The correlation value he calculates is only 0. 5. What does bob conclude?.

Answers

Bob after downloading the valid data set from the internet and calculating the correlation values as 0.5 concludes that as the number of bedrooms in a home increases its selling price also increases.

This happens because as there is an increased demand for the number of bedrooms in a home there should be enough supply in the market to fulfill the requirements. So, there should be a surplus of beds in the market and for that the selling price increases to maintain the surplus.

The law of Demand states that as the demand for a particular commodity or a product increases its price also increases. The above example of Bob gets verified according to the Law of Demand.

Learn more about Law of Demand at:

brainly.com/question/18181192

#SPJ4

The difference in the x-coordinates of two points is 3, and the difference in the y-coordinates of the two points is 6. What is the slope of the line that passes through the points? 2 3 6 9 ​

Answers

Solution :

the differences in the X coordinates and Y coordinates:

The x-coordinate tells you how many steps you have to take to the right (positive) or left (negative) on the x-axis. And the y-coordinate tells you have many steps to move up (positive) or down (negative) on the y-axis.

Given : difference in the x-coordinates of two points is 3

the difference in the y-coordinates of the two points is 6

The slope of the line :

In Mathematics, a slope of a line is the change in y coordinate with respect to the change in x coordinate.

The net change in the y-coordinate is represented by Δy and the net change in the x-coordinate is represented by Δx.

Hence, the change in y-coordinate with respect to the change in x-coordinate is given by,

m = change in y/change in x = Δy/Δx

Where “m” is the slope of a line.

Tan θ = Δy/Δx can also represent the slope of the line

So, tan θ to be the slope of a line.

Generally, the slope of a line gives the measure of its steepness and direction. The slope of a straight line between two points says (x1,y1) and (x2,y2) can be easily determined by finding the difference between the coordinates of the points. The letter ‘ m’ usually represents the slope.

If P(x1,y1) and Q(x2,y2) are the two points on a straight line, then the slope formula is given by:

Slope,

m = Change in y-coordinates/Change in x-coordinates

m = (y2 – y1)/(x2 – x1)

Therefore, based on the above formula, we can easily calculate the slope of a line between two points.

In other terms, the slope of a line between two points is also said to be the rise of the line from one point to another (along the y-axis) over the run (along the x-axis). Therefore,

Slope, m = Rise/Run

Use the slope formula.

the slope of a line given the coordinates of two points on the line. The slope formula is m=(y2-y1)/(x2-x1), or

the change in the y values over the change in the x values.

The coordinates of the first point represent x1 and y1. The coordinates of the second points are x2, y2. It does not matter which point you label as the first point and which you label as the second. Don't forget to include the correct sign of each value. Simplify to get the value of the slope. Check the your answer by graphing the points and verifying that the vertical distance between the two points and the horizontal distance between the two points is captured by the numerator and denominator of the slope

Ponit (2,3) & (6,9)

Slope of Line = y2-y1/x2-x1

= 9-3/3-2

=6/1

Slope of Line = 6

More Details : brainly.com/question/16180119

#SPJ9

Other Questions
Why did the Phoenicians establish Carthage? A. To fight Rome B. To serve as a trading post C. To sell slaves D. To control the gold trade Divide.76 divded by 17Enter your answer as a mixed number in simplest form by filling in the boxes. v=u+ at307 80 Marksu=2a=-7Work out the value of v.t = 0.5Help If the price of pineapples increases from $3 to $5, and in response the quantity of pineapples purchased decreases from 28 to 20, the price elasticity of demand for pineapples during this period is? What was one reason South Carolina gave for its decision to secede from the Union?Responses:to form its own military.to break its contract with the federal government.to uphold the rights of property owners.to avoid paying federal taxes. Economic expansion and suburbanization in the 1950s led to cultural pressures to behave in certain ways according to your __________. In human populations of northern European origin, the disorder called hemochromatosis causes excess iron uptake from food and affects one in 200 adults. Among adults, men are ten times as likely as women to suffer from iron overload. Taking into account the existence of a menstrual cycle in humans, devise a hypothesis that explains this difference. The three main areas in the value chain where significant differences in the costs of? staffing fluctuations associated with project completion and initiation are most likely to occur in organizations that are: According to the pyramid of corporate social responsibility, which component involves being a good corporate citizen, contributing resources to the community and improving the quality of life? Which actions will the nurse take after noticing bibasilar crackles in a client who had an open cholecystectomy on the previous day? select all that apply. one, some, or all responses may be correct. Collecting an accounts receivable affects financial statements by increasing ______. Consider a physical pendulum with length of 94.7 cm and mass of 166 g. if the pendulum was released from an angle less than 10o, then calculate the angular speed of the pendulum. (g = 9.80 m/s2) 2 pointsIn order for a goal to be measurable, it must be specific. Which goal is fully measurable, according the SMART technique?I would like to run a 5K race, 3.1 miles, in under 30 minutes.I would like to be healthier in the next 3 monthsWithin the next 3 months, I would like to run a 5 K race, 3.1 miles, in under 30 minutes.I would like to lose 15 poundsPrevious A cross-country skier moves 36 meters eastward, then 44meters westward, and finally 22 meters eastward.What is the magnitude and direction of the displacement ? improvement of automatic extraction of inventive information with patent claims structure recognition 9.The Senior House Master of (SHS) invited the School's Volleyball players and Prefects onduty to his office. 14 students altogether reported. 7 Volleyball players left his office, leavingbehind only the Prefects on duty. If 10 of them play Volleyball, find:the number of students who were both prefects and Volleyball players;those who were only Prefects. What are the intervals of increase and decrease for the absolute value function below?1. Increase: x > 0, decrease: x < 02. Increase: x < 0, decrease: x > 03. Increase: y < 0, decrease: y > 04. Increase: y > 0, decrease: y > 0 Modern Managed Hospitals (MMH) is a national for-profit chain of hospitals. Management wants to survey patients discharged this past year to obtain patient satisfaction profiles. It wishes to use a sample of such patients. Several sampling techniques are described below. Categorize each technique as simple random sample, stratified sample, systematic sample, cluster sample, or convenience sample.(a)Obtain a list of patients discharged from all MMH facilities. Divide the patients according to length of hospital stay (2 days or less, 37 days, 814 days, more than 14 days). Draw simple random samples from each group.simple random samplestratified sample systematic samplecluster sampleconvenience sample(b)Obtain lists of patients discharged from all MMH facilities. Number these patients, and then use a random-number table to obtain the sample.simple random samplestratified sample systematic samplecluster sampleconvenience sample(c)Randomly select some MMH facilities from each of five geographic regions, and then include all the patients on the discharge lists of the selected hospitals.simple random samplestratified sample systematic samplecluster sampleconvenience sample(d)At the beginning of the year, instruct each MMH facility to survey every 500th patient discharged.simple random samplestratified sample systematic samplecluster sampleconvenience sample(e)Instruct each MMH facility to survey 10 discharged patients this week and send in the results.simple random samplestratified sample systematic samplecluster sampleconvenience sample Each molecule of ammonia (nh3) is made up of one nitrogen atom and three hydrogen atoms. which term best describes ammonia?(1 point) compound compound heterogeneous mixture heterogeneous mixture homogeneous mixture homogeneous mixture element element