suppose that 8% of the patients tested in a clinic are infected with hiv. furthermore, suppose that when a blood test for hiv is given, 94% of the patients infected with hiv test positive and that 7% of the patients not infected with hiv test positive. what is the probability that

The expected sum of the numbers that appear when three fair dice are rolled, is 10.5.

In the given question we have to find the expected sum of the numbers that appear when three fair dice are rolled.

As we know that a dice have six faces. Each faces are mark from the number 1 to 6.

That means if we rolled a dice then there is possibility of coming six numbers. That numbers are 1, 2, 3, 4, 5, 6.

Now the sum of these numbers is

1+2+3+4+5+6 = 21

Total numbers are 6.

So the expected sum of the numbers that appears when one fair dice is rolled

=21/6

=3.5

Since there are three fair dice that are rolled.

So the expected sum of the numbers that appears when three fair dice are rolled = 3*3.5

The expected sum of the numbers that appears when three fair dice are rolled = 10.5

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Alma should sit  7.5 feet apart from the fulcrum, In order to balance the seesaw.

What is Ratio ?

A ratio in mathematics demonstrates how many times one number is contained in another. For instance, the ratio of oranges to lemons in a dish of fruit is eight to six if there are eight oranges and six lemons.

Given, The weights of Alma and Bella are in the ratio 5:7 respectively.

∴ Alma's weight = 5/12 and Bella's weight = 7/12.

they are sitting 18 feet apart on a seesaw.

It means the distance between Alma and Bella is 18 feet.

Now, Alma should sit feet far from the fulcrum in order to balance the seesaw :

       = Distance between Alma and Bella × Weight of Alma

       = 18 feet × 5/12

       = 7.5 feet.

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We can represent 4 integers as a difference of two distinct members i.e.    {1, -1, 2, -2}.

What are Integers ?

The collection of positive and negative integers is known as an integer. Integers, like whole numbers, do not include the fractional portion. Integers can therefore be defined as numbers that can be positive, negative, or zero but not as fractions.

Here, we have 3 distinct positive integers which are {1, 2, 3}.

We can list down the integers as a difference of the two distinct members as follows :

1 - 2 = -1

2 - 1 = 1

2 - 3 = -1

3 - 2 = 1

1 - 3 = -2

3 - 1 = 2

So, we can see clearly it is representing only 4 integers which are {1, -1, 2, -2}.

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Given that, AB ≅ ED, CA ≅ CE, and AE bisects BD, the two-column proof that shows ΔABC is congruent to  ΔEDC by SSS Congruence Theorem.

The side-side congruence theorem (SSS) states that if two triangles has three pairs of sides that are congruent to each other, then both triangles are congruent.

We are given the following information that is;

AE bisects BD; AB is congruent to DE

Since AE bisects BD, thus the third pair of sides of ΔABC and ΔEDC, BC and CD, will be congruent.

This implies that both triangles has three pairs of congruent sides (AB ≅ ED, CA ≅ CE, and BC ≅ CD), meets the criterion of the SSS Congruence Theorem.

Therefore,  ΔABC ≅  ΔEDC by SSS Congruence Theorem.

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Answer:

undefined

Step-by-step explanation:

the line has always the same x, so it is a vertical line

A vertical line has an undefined slope

Scatterplots would show no straight‑line pattern, but there might be a strong pattern of another form.

The correlation coefficient between the values is close to 0, which means that there is no pattern of any form, hence, the scatterplot would show a cloud of points with no visible pattern

A scatter plot is a form of plot or mathematical diagram that uses Cartesian coordinates to display values for typically two variables for a collection of data. It is also known as a scatter graph, scatter chart, scattergram, or scatter diagram. One more variable can be shown if the points are color-, shape-, or size-coded. The data are represented as a set of points, where each point's position on the horizontal axis is determined by the value of one variable and its position on the vertical axis by the value of the other variable.

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37 is the minimum possible value for N.

Given,

Sharks' current winning percentage is 1/3*100, or 33.33%.

Since Shark's winning rate must be at least 95%, we must determine the lowest number of N that can be used. Sharks must thus win every one of the N games in order to reduce N.

Total matches therefore equal N+3.

When sharks have a 95% winning percentage, tigers will have a 5% winning percentage. And they'll only triumph in two games overall.

Therefore,

2 matchups represent 5% of all matches.

As a result, there were 40 total matches (2/5*100).

So,

N+3 = 40 => N= 37

As an alternative, you can determine the solution by solving the following equation.

2/(N+3) = 5/100

You will obtain N = 37 by solving.

That is,

The minimum possible value for N is 37

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The number 28 represented by the equation A = 28x + 5 is the average time it takes to mow one lawn

What is an Equation?

Equations are mathematical statements with two algebraic expressions flanking the equals (=) sign on either side.

It demonstrates the equality of the relationship between the expressions printed on the left and right sides.

Coefficients, variables, operators, constants, terms, expressions, and the equal to sign are some of the components of an equation. The "=" sign and terms on both sides must always be present when writing an equation.

Given data ,

Let the equation be = A

Now , the equation A is given as

A = 28x + 5

where x is the number of lawns to mow

Now , A is the average time required to mow a lawn

So , the number 28 is the average time required to mow a single lawn

Therefore , the number 28  average time it takes to mow one lawn

Hence , The number 28 represented by the equation A = 28x + 5 is the average time it takes to mow one lawn

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The number of pizzas that must be sold to make at least a profit of $500 is 220.

Profit is total revenue less total cost.

Profit = revenue - cost (price of one pizza x number of pizzas sold) - [cost to rent the equipment + (cost of one pizza x number of pizzas made)] ≥ profit

$4.50p - ($250 + $2p) ≥ $300

$4.50p - $250 - $2p ≥ $300

$2.50p ≥ $300 + $250

$2.50p ≥ $550

Divide

p ≥ $550 / 2.50

p ≥ 220

This illustrates the concept of inequality.

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Answer:

Slope M=6

Step-by-step explanation:

Answer:

one solution

Step-by-step explanation:

Pair of points representing parallel line to the x-axis from the given pairs is equal to option a. (3.2, 7) and (5, 7).

As given in the question,

Line parallel to the x-axis has slope = 0

Calculate the slope of each pair of points :

a. (3.2, 7) and (5, 7)

Slope = (y₂ - y₁)/ (x₂ - x₁)

          = ( 7- 7) / ( 5 - 3.2)

          = 0

Pair of points represents parallel line to x-axis.

b. (8, 8.4) and (8, 8.8)

Slope = (y₂ - y₁)/ (x₂ - x₁)

          = ( 8.8- 8.4) / ( 8 - 8)

          = not defined

Pair of points is not parallel to x-axis.

c. (6 1/2, 12) and (6.2, 11)

Slope = (y₂ - y₁)/ (x₂ - x₁)

          = ( 11- 12 / ( 6.2 - 6.5)

          = 1/ 0.3

         = 10/3

Pair of points is not parallel to x-axis.

Therefore, pair of points represents parallel line to x-axis is equal to

option a. (3.2, 7) and (5, 7).

The complete question is:

For each pair of points below, think about the line that joins them. For which pairs is the line parallel to the x-axis? Circle your answer(s). Without plotting them, explain how you know.

a. (3.2, 7) and (5, 7)

b. (8, 8.4) and (8, 8.8)

c. (6 1/2, 12) and (6.2, 11)

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Answer: 5.3

Step-by-step explanation: First, you have to use PEMDAS and then you will get 32 divided by 6, which is 5.3 repeating

The y value of the y-intercept is 146 feet while the slope is -4 feet per second

it was given that Kaliel starts at a height of 142 feet. That means at time 0 second (the start), he is at height 142 feet. So this is y-intercept i.e. time = 0 (x-axis), height = 146  (y-axis)

Thus, the y value of the y-intercept is 146 feet

In this case, the slope is defined as the rate of change in height with time i.e the rate at which he descends

Slope = Change in height / Change in time

From the table, the time given is 8 and 13 when the height is 110 and 94. Slope will be:

Slope = (94-110) /(12-8)

Slope = -16/4

Slope = -4

This implies he descends at a rate of 4 feet per second.

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As described in the analytic geometry, the points are(1.1, -5 )

The area of algebra known as analytical geometry uses an ordered pair of numbers known as coordinates to determine the position of a point on a plane. It is utilized to model many plane objects, including points, lines, and others. The terms Coordinate geometry and Cartesian geometry are both used to refer to analytical geometry.

We have to locate the point where the line is through the x line and y line coordinates

Therefore the point is  (1.1, -5 )

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By using compatible numbers, the estimate is 900

From the question, we have the following expression that can be used in our computation:

92 x 12

From the question, we are to make use of compatible numbers

This means that we have the following approximation

92 = 90

12 = 10

Next, we estimate the product using approximated values

i.e.

Product = Approximation of 92 x Approximation of 12

Substitute the known values in the above equation, so, we have the following representation

Product = 90 x 10

Evaluate the products

Product = 900

Using a calculator, we have

Product = 92 * 12

Evaluate the products

Product = 1104

900 is less than 1104

Hence, the estimate is less than the actual product

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mean =1.532

median = 6.98

standard deviation = 3.5

mean for heating degree days and broken down by season for the california

according to the given values we find the mean

mean =

-1.45+ -2.5+-4.5+1.056+3.67+6.98+3.78+2.67+4.87+3.45+2.97+-4.06/12

=1.532

median for heating degree days and broken down by season for the california  

according to the given values now we find the median

median = 6.98

standard deviation  for heating degree days and broken down by season for the california  

according to the given values now we find the standard deviation

standard deviation = square root of ∑([tex]x_{i}[/tex]- μ)^2/n

  = 3.5

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Answer:

40, 70, 80

Step-by-step explanation:

It would have to be numbers that end in 0.  Numbers that are divisible by 5 end in 0 or 5, but numbers divisible by 2 do not end in 5, so only the numbers that end in 0 are divisible by 2 and 5.

Here the time taken to complete the journey is2 hour 20 minutes

To find it we need to use the formula which include speed, time and distance of total journey.

Speed=Distance/Time

Here we put the number based on the formula,

18km/hr=40km/time

Time=40km/18km/hr

Time=2.2hr or 2 hour 20 minutes

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Answer:

x = 4

Step-by-step explanation:

A line with undefined slope is a vertical line.

Vertical lines have equation in the form:

x = anumber

In this case they gave you the info you need (4,6) The 4 is the x and the 6 is the y. (4,6) is in the form (x,y).

So x is 4.

x = 4

A) Player 1 does not have a dominant strategy because if player 2 plays left, then player 1 should play bottom but if player 2 plays right then player 1 should play top. For a dominant strategy to existing player 1 would have to chose top or bottom regardless of what player 2 does.

B) Player 2 has a dominant strategy of left because this always produces a better outcome for this player. Specifically, if player 1 plays top player 2 is better off playing left (since 5 > 4) and if player 1 plays bottom player 2 is still better off playing left (since 4 > 3)

C) i) Top/Left is not a Nash Equilibrium because if player 2 plays left then player 1 would be better off playing bottom and it only takes one player wanting to deviate to ruin a potential Nash Equilibrium.

Simplest 3 varieties of stresses can exchange the composition of an equilibrium aggregate: (1) a change inside the concentrations (or partial pressures) of the additives by using adding or doing away with reactants or merchandise, (2) an alternate in the general strain or quantity, and (three) an exchange within the temperature of the gadget.

To learn more about A) Player 1 does not have a dominant strategy because if player 2 plays left, then player 1 should play bottom but if player 2 plays right then player 1 should play top. For a dominant strategy to existing player 1 would have to chose top or bottom regardless of what player 2 does.

B) Player 2 has a dominant strategy of left because this always produces a better outcome for this player. Specifically, if player 1 plays top player 2 is better off playing left (since 5 > 4) and if player 1 plays bottom player 2 is still better off playing left (since 4 > 3)

C) i) Top/Left is not a Nash Equilibrium because if player 2 plays left then player 1 would be better off playing bottom and it only takes one player wanting to deviate to ruin a potential Nash Equilibrium.

Simplest 3 varieties of stresses can exchange the composition of an equilibrium aggregate: (1) a change inside the concentrations (or partial pressures) of the additives by using adding or doing away with reactants or merchandise, (2) an alternate in the general strain or quantity, and (three) an exchange within the temperature of the gadget.

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The linear equation associated with slope is 7, and (1, 8) is on the line is y = 7x + 1.

A straight line on the coordinate plane is represented by a linear function.

A linear function always has the same and constant b.

The formula for a linear function is f(x) = ax + b, where a and b are real values.

A linear equation or function is given as ;

y = mx + b

Now,

At x = 0 ⇒ y = b so it will be a y-intercept.

Put m = 7 , x = 1 and y = 8

8 = 7(1) + b

b = 1

Thus, y = 7x + 1

Hence "The linear equation associated with slope is 7, and (1, 8) is on the line is y = 7x + 1".

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The solution of the given equation is  between 4 and 5.

What is solution of an equation?

The points where the lines representing the intersection of two linear equations intersect are referred to as the solution of a linear equation. In other words, the set of all possible values for the variables that satisfy the specified linear equation constitutes the solution set of the system of linear equations.

Consider the given equation,

x^3 - 6x = 72

Subtract 72 from both sides,

x^3 - 6x - 72 = 72 - 72

x^3 - 6x - 72 = 0

After solving this equation we get

x ≈ 4.63902

This value is exactly between the 4 and 5.

Hence, the solution of the given equation is  between 4 and 5.

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Individuals that are far from the mean on the first measurement will lie closer to the mean on second; this phenomenon is called regression towards the mean.

What is regression?

Regression analysis is a group of statistical procedures used in statistical modelling to determine the relationships between a dependent variable and one or more independent variables.

If one sample of a random variable is extreme, the next sampling of the same random variable is likely to be closer to its mean. This is known as regression toward the mean.

Background A statistical phenomenon called regression to the mean (RTM) can cause natural variation in repeated data to appear as actual change. It occurs when measurements that are frequently followed by ones that are more typical of the range are unusually large or small.

Hence, individuals that are far from the mean on the first measurement will lie closer to the mean on second; this phenomenon is called regression towards the mean.

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The 5 separate possibility that officer seats may be filled in 336 different ways.

7 + 4 + 6 = 17 students are running for the 5 officer positions. If at least 3 of the 5 positions must be filled by juniors, there are 6 ways to choose which 3 juniors will fill these positions.

Then there are 7 + 4 - 3 = 8 remaining students 3 juniors and 5 from the remaining sophomores and freshmen to fill the remaining 2 positions.

There are 8 ways to choose the first of these 2 positions and 7 ways to choose the second, so there are a total of 6 × 8 × 7 = 336 ways to choose the officers.

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The measure of the largest angle of the triangle is 93°, while the measure of the smallest and the third angle is 31° and 56° respectively. Considering that the measure of the third angle is 25 degrees more than that of the smallest angle.

In any given triangle, the sum of its interior angles is equal to 180°.

Let the smallest angle be represented by x, so that the other angles are 3x and x + 25.

thus

x + 3x + x + 25 = 180° {collect like terms}

5x + 25° = 180°

5x + 25° - 25° = 180° - 25° {subtract 25° from both sides of the equation}

5x = 155°

x = 155°/5 {divide through by the coefficient of x}

x = 31°

thus the other angles are derived by substituting the value 31° for x as follows;

3(31) = 93°

31° + 25° = 56°

Therefore, the largest angle of the triangle 93°, the smallest angle is 31° and the measure of the third angle is 56°.

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Such a box can hold a maximum volume of (114/2)3 = 9837.4 cubic inches.

A three-dimensional space's occupied volume is measured. [1] It is frequently measured numerically with SI-derived units (like the cubic meter and litre) or with a variety of imperial or US-standard units. In contrast to how much space the container actually occupies, the volume of a container is typically thought of as its carrying capacity, or the amount of fluid (liquid or gas) that it could hold. A shipment cannot be larger than 114 inches in length plus girth if it is going through a specific postal service. The maximum cubic inch volume of a rectangular box with a square base that can be sent is (114/2)3 = 9837.4.

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After 40 days 4467 bees will be the population after 40 days.

An exponential function is a Mathematical function in the form f (x) = ax, where “x” is a variable and “a” is a constant which is called the base of the function and it should be greater than 0.

Given here: A hive of bees contains 27 bees when it is first discovered. After 4 days, there are 45 bees. The population of bees also increase exponentially.

let the function that gives the population of bees after given days

f(x)=aˣ27

a⁴×27=45

       a= [tex]\sqrt[4]{45/27}[/tex]

        a=1.1362

Thus for x= 40 we have f(40)=1.1362⁴⁰×27

                                               = 4465.69

                                               =4467 (approx)

Hence, After 40 days 4467 bees will be the population after 40 days

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1600 square meters is the greatest area that may be enclosed.

 Rectangle.

The internal angles of a rectangle, which has four sides, are all exactly 90 degrees. At each corner or vertex, the two sides come together at a straight angle. The rectangle differs from a square because its two opposite sides are of equal length.

If fencing is required for 200 meters, then the enclosed area's perimeter is 200 meters.

Perimeter of rectangle = 2(L + B)

2(L+B) = 200

Divide both sides by 2

L+B = 100

L = 100 - B

Here,

Area(A) = L X B

Substitute L = 100 - B into the equation above

A = (100 - B) x B

A = 100B - B²

At maximum area dA/dB = 0

dA/dB = 100 - 2B

100 - 2B = 0

2B = 100

B = 100/2

B = 50m

So L = 100 - 50

L = 50m

Maximum area to be enclosed = 50 x 50

Maximum area to be enclosed = 2500 square meters

In conclusion, the 2500 square meters of space that the fence will enclose

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Answer:

Step-by-step explanation:

write all your sides and angles down

Corresponding sides:

AC≅JL

CB≅LK

AB≅JK

Corresponding angles:

∠A≅∠J

∠C≅∠L

∠B≅∠K