Can someone help me with the answer please

( 1,2 ) ∈ R , (2,3 ) ∈ R ⇒ (1 , 3 ) ∈ R, R is transitive .

What connection does the reflexive example have?

If every component of set X is connected to or related to one another, then a binary relation R across that set is said to be reflexive in mathematics.

                          Regarding relations, this can be written as (a, a) R a X or as I R, where I is the identity relation on A. As a result, it is said to hold reflexivity and to have a reflexive feature. For instance, the reflexive relation for the set A = 1, 2 will be R = (1, 1), (2, 2), (1, 2), (2, 1). A relation is hence reflexive if (a, a) R a A.

Let A = {1, 2, 3}.

R = {(1,2),(1,3) ,(2,3)}

(1,1) ∉ R ⇒ R is not reflexive.

( 1,2 ) ∈ R ⇒ but ( 2, 1) ∉ R, R is not symmetric.

( 1,2 ) ∈ R , (2,3 ) ∈ R ⇒ (1 , 3 ) ∈ R

R is transitive .

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First you will get 4dz

Answer:

x = 6

Step-by-step explanation:

35 - 2x = 23

35 - 23 - 2x = 0

35 - 23 = 2x

12 = 2x

x = 6

35- 2x = 23

Subtract 35 from both sides.

Subtract 35 from 23 to get −12.

Divide both sides by −2.

Divide −12 by −2 to get 6.

To rewrite a division of fractions as a multiplication, flip the numerator and the denominator of the divisor:

Then, multiply the numerators and the denominators:

The GCF of 18 and 36 is 18. Then:

Therefore, the answer is:

In this particular scenario, the term "average" mean arithmetic mean.

In this scenario, "average" refers to the arithmetic mean of the prices of PR energy bars sold by eight grocery stores. To determine the average price of the energy bar, Sarah and Andrew added up the prices of the PR energy bar sold at all the eight grocery stores and divided the total by the number of stores which is 8. Sarah calculated that the average price of the candy bar was $1.37, and Andrew calculated that the average price of the energy bar was actually $1.41.

The steps Sarah followed to calculate the average price of the energy bar are shown below:

Add up the prices of the PR energy bar sold at all the eight grocery stores:

1.09 + 1.29 + 1.29 + 1.35 + 1.39 + 1.49 + 1.59 + 1.79 = $11.68

Divide the total by the number of stores, i.e., 8:

$11.68 / 8 = $1.46 (average price)

Therefore, Sarah calculated the average price of the energy bar to be $1.46.

Andrew calculated the average price of the energy bar as shown below:

1.09 + 1.29 + 1.29 + 1.35 + 1.39 + 1.49 + 1.59 + 1.79 = $11.68

Divide the total by the number of stores, i.e., 8:

$11.68 / 8 = $1.46 (average price)

Then add Sarah's value and Andrew's value and divide by 2:

($1.37 + $1.46)/2 = $1.415

Therefore, the average price of the energy bar as per Andrew is $1.415.

The average price difference between Sarah and Andrew’s calculations is not much. It only differs by 4 cents, which is negligible. It will not make much of a difference for most people. However, in situations where large quantities of a product are being sold or purchased, even small differences in price can add up to a significant amount of money. Hence, it is important to use the correct average price. Andrew is correct in this scenario because the value $1.415 lies closer to the price of the energy bars in most stores than $1.37.

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Given the data on the length of the metacarpal bone (X) and the height (Y) of 22 sets of skeletal remains, we are asked to find the random variables, the equation of the best-fitting line (least squares regression equation), interpret the slope and Y-intercept, predict the height for a given length of metacarpal, and compute the residual for a specific data point (47, 172).

(a) The random variables are X (length of metacarpal) and Y (height).

(c) To find the equation of the best-fitting line, we need to perform linear regression. Using the given data, we calculate the slope (β₁) and the Y-intercept (β₀) of the regression line. The equation will be in the form ^Y = β₀ + β₁X.

(d) The slope (β₁) represents the expected change in Y (height) for every 1-unit increase in X (length of metacarpal). Its interpretation will include the units of Y divided by the units of X.

(e) The Y-intercept (β₀) represents the expected height when X (length of metacarpal) is 0. The interpretation will include the units of Y.

(g) To compute the residual for the ordered pair (47, 172), we substitute X = 47 into the regression equation ^Y = β₀ + β₁X and subtract the actual Y-value (172). The residual is the difference between the predicted and observed Y-values.

To provide specific numerical values for the equations and predictions, the original data and calculations are needed.

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Answer:

2

Step-by-step explanation:

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Answer: Choice A

The two angles must be supplementary and adjacent to form a linear pair.

Adjacent angles are angles that touch and share a common line segment, line, or ray. Think of two rooms that share the same wall and how they are considered adjacent rooms.

Supplementary angles form a straight angle. They add to 180 degrees.

Rose curve equations have two forms: r = a cos(nθ) and r = a sin(nθ) where a ≠ 0 and n is a positive integer. Petals have length determined by a. If n is odd, the number of petals is n. However, if n is even, the number of petals is 2n.

hope it helps aaa ^^'

Step-by-step explanation:

Original cost = 900

Cost after VAT = 990

VAT amount = 990 - 900 = 90

Rate of VAT = 90/900×100 = 90/9 = 10%

Answer: 27, 29

Step-by-step explanation:

Let's say that the 2 numbers are x and x+2

That means that: x+x+2=56

Simplify: 2x+2=56

Solve: 2x=54

x=27

27,29 are the 2 numbers

Answer: X equals 7

Step-by-step explanation:

Answer:

7

Step-by-step explanation:

First you want to simplify the equation

8x + (-5) = 23 + 4x

-5 + 8x = 23 + 4x

Then solve for x, but before we do that we !!!must!!! move all terms that have x  to the left. Everything else would go to the right.

So we add -4x to both sides ..

-5+ 8x + (-4x) = 23 + 4x + (-4x)

-5 + 4x = 23 + 4x + (-4x)

-5 + 4x = 23 +0

-5 + 4x  = 23

Then add 5 to both sides of the equation:

-5 + 5 + 4x = 23 + 5

0 + 4x = 23 + 5

4x = 23 + 5

4x = 28

Then divide each side by 4:

x = 7

And there you have it. The answer is 7. Hope this helps! :)

Answer:

d.The monthly payment is reduced by $14 and you plan to sell the home at the end of 7 years.

Step-by-step explanation:

Using the inscribed angle theorems, the measure of the indicated angles are:

1. m∠BOA = 26°

2. m∠BDA = 13°

3. m∠BCA = 13°

Based on the inscribed angle theorem, the following relationships are established:

Given:

Intercepted arc BA = 26°

1. ∠BOA is central angle

Thus:

m∠BOA = 26° (inscribed angle theorems)

2. ∠BDA is inscribed angle.

m∠BDA = 1/2(30) = 13° (inscribed angle theorems)

3. m∠BCA = m∠BDA = 13° (inscribed angle theorems)

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Step-by-step explanation:

the price per pound of grass is $2.12

Answer:

10 ml

Step-by-step explanation:

This is the volume for Zinc!

Answer:

see attached

Step-by-step explanation:

Morning:

12, 19, 19, 21, 23, 25, 27, 31, 36, 39

Min value: 12

Lower quartile (Q1): 19

Median (Q2): 24

Upper Quartile (Q3): 31

Max value: 39

Afternoon:

8, 8, 11, 15, 16, 27, 34, 39, 43, 51

Min value: 8

Lower quartile (Q1): 11

Median (Q2): 21.5

Upper Quartile (Q3): 39

Max value: 51

Answer:

7.  AM IQR: 12   PM: IQR: 28  8. see below in explanation

Step-by-step explanation:

7. 31-19=12

    39-11= 28

You subtract Q1 from Q3 to get the IQR.

8. I believe the morning group of dogs would be easier to walk as one group because the group has a closer range of weights (12-39) compared to the afternoon group of (8-51). Walking a large group of dogs with similar weights would be easier than walking a group of very small and very large dogs at the same time because their pace of walking would be so different.

The answer of this question is ,the correct answer of this rational function is b) F(x) =1/ (x+1)(x+2).

A rational function is  function that can be expressed as ratio of two polynomial, where the denominator polynomial is not zero. In other words, a rational function is in  the form of :

f(x) = p(x) / q(x)

where p(x) and q(x) are polynomials in x, and q(x) is not equal to zero for any value of x.

Rational functions can have various properties and behaviors, depending on the degree and roots of the numerator and denominator polynomials. For example, they may have vertical and horizontal asymptotes, holes, intercepts, and other features.

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The speaking turn, the adjacency pair, and the sequential implicativeness are the three fundamental components of conversation that conversation analysts identify.

The three essential elements of conversation that conversation analysts identify are the speaking turn, the adjacency pair, and the sequential implicativeness.

Mary: Hello! Mary is my name.

Andrew: Hey Mary I'm Andrew, and how are you? Nice to meet you.

Mary: Thank you; I just arrived from Memphis; I'm OK. , From where do you hail?

Andrew: You are a Memphis native? I'm a Cleveland native; is this also your first day of classes?

Mary: Indeed! I recently met someone from Cleveland at the front desk, and I'm a freshman.

Andrew: Really...? I don't know many Clevelanders who come here.

Clarissa is there, Mary, there she is! Let me introduce you to my pal, please come over!

Clarissa was undoubtedly a student of mine in high school, Andrew

Oh, Clarissa Hello Andrew Hey Mary Are you prepared for the semester to begin?

Mary: Obviously!

Andrew: I can't even find my dorm room, so not really.

The complete question is:

Write a conversation between two students who are meeting for the first time. Have them greet each other, ask each other how they are doing, ask each other where they are from, introduce a third person and say goodbye.

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Answer:

Step-by-step explanation:

It's given that PL = PM

so the equation is

3x+4=6x-14

3x-6x=-14-4

-3x=-18

x=6

6x-14

6.6-14

36-14

22

Answer: 22

because PL = PN = PM => P is the centre of the inscribed circle of ΔHJK

=>  the radius = PL =PM =PN

because PL = PM

=> 3x + 4 = 6x - 14

⇔ 3x = 18

⇔ x = 6

=> PL = 3.6 + 4 = 22

Step-by-step explanation:

Answer:

A. y+3=4(x+1)

Step-by-step explanation:

Lets find an equation having the form y=mx+b, where m is the slope and b the y-intercept.  We are given the slope, so let's add that first:

  y = 4x + b

That was easy.  No how can we find the value for b?  We are given a point that the line passes through:  (-1,-3).  If the line gors through this point, then it must be a valid solution to the equation.  Let's use that point in the equation and solve for b:

 y = 4x + b

 -3 = 4*(-1) + b  for point (-1,-3)

 -3 = -4 + b

  b = 1

The equation becomes y = 4x + 1

Put this into point slope form:

y = 4x + 1

y+3 = 4x + 1 + 3

y+3 = 4x + 4

y+3 = 4(x + 1)

See the attached graph.

Answer:

Step-by-step explanation:

multiply the expression out keeping in mind order of operation so paranthesis first

6x-12-10(x+3)

6x-12-10x-30

combine like terms

-4x-42=0

-4x=42

x= - 21/2

Answer:

44 answers

Step-by-step explanation:

80% of total questions are answered, ie 80% of 55 questions are answered.

So, (80/100) x 55 , ie 44 questions are answered.

Assuming that all answered questions are correct, 44 answers are correct.

Answer:

4•(2+5)^2 -5^2 = 171

Step-by-step explanation:

Do BIDMAS
(brackets, indices, division, multipy, add, sub)

so brackets
4*7^2-5^2
then do the indices
4*49-25
then the multiply
196-25
= 171
Hope this helps

Answer: Brackets => 4 x (7)^2 - 5^2
               Indices/Orders => 4 x 49 - 25

               Multiplication => 196 - 25

               Subtraction => 171

Although a bigger random sample can aid in increasing the precision and decreasing the variability of a national opinion poll, it cannot ensure a decrease in bias, which is dependent on the efficacy of the sampling technique and the sample's representativeness.

A nationwide opinion poll's results are often less variable as the random sample size is increased since the bigger sample size more accurately represents the people being sampled.

It does not necessarily lessen bias, which is the term for systemic mistakes in the sampling process or polling methodology that may endure even with a larger sample size.

The accuracy of the poll's results can be improved by reducing random mistakes like sampling and measurement errors with a bigger sample size.

The standard error of the mean, a measurement of the variability of the sample mean from sample to sample, is often less the bigger the sample size.

A national opinion poll's measure of interest, the population mean, can be more accurately estimated with a smaller standard error.

If the sample is not completely random or representative of the population being investigated, bias may still exist in a bigger sample.

For instance, the findings may be biassed if the pollsters oversample a certain demographic group or geographic area.

Non-response bias can also happen if a certain group of people is less likely than others to reply to the survey.

As a result, while a bigger random sample can aid in increasing the precision and decreasing the variability of a national opinion poll, it cannot ensure a decrease in bias, which is dependent on the efficacy of the sampling technique and the sample's representativeness.

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Answer: it isn’t possible to compare.

Step-by-step explanation:

Percents represent parts of something, and 24 is an actual number.

Based on this data, for every inch in height, the arm span increases by 1.1 inches.

Here, we have,

I put the height of people on the x-axis because this is what I am trying to correlate the arm span to. I put the arm span on the y-axis because it is dependent on height.

I used point (60,61) and (70,72) to draw the line of best fit and to get the equation. First, to get the slope I would use the slope formula of m = 72-61/70-60 or 11/10 to get a slope of approximately 1.1. Then I used (60,61) to get the rest of the equation by plugging it in: y-61 = 1.1(x -60). This becomes y-61 = 1.1x - 66. Add 61 to both sides and the final equation is y = 1.1x – 5.

The slope represents the rate of change arm span based on height. The y intercept is the arm span.

Using points (66,68) and points (70,72) I plug each into the equation y=1.1x-5 to figure each out based on the difference from the actual points and get .4 for (66,68) and 0 for point (70,72) so I would say, based on .4 and 0 for these two points that this is a good line of best fit.

Based on this data, for every inch in height, the arm span increases by 1.1 inches.

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complete question:

There are many measurements of the human body that are positively correlated. For example, the length of one's forearm (measured from elbow to wrist) is approximately the same length as the foot (measured from heel to toe). They are positively correlated because, as one measurement increases, so does the other measurement.

The dimensions of the rectangle are 40 and 120m respectively.

Let the width = w

The length will be:

= 3 × w

= 3w

Perimeter = 320

Therefore, the dimensions will be:

= 2(3w + w) = 320

8w = 320

w = 320/8

w = 40

Length = 3 × 40

= 120

The dimensions of the rectangle are 40 and 120m respectively.

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The numerical length of the line segment FG is 10 units.

An equation is an expression that shows the relationship between two or more numbers and variables. An independent variable is a variable that does not depend on other variables while a dependent variable is a variable that depends on other variables.

Point G is on FH, hence:

FH = FG + GH

Given that GH = 8, FH = 3x + 3, FG = 2x, hence:

3x + 3 = (2x) + 8

x = 5

FG = 2x = 2(5) = 10

The numerical length of the line segment FG is 10 units.

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Solution

For this case the confidence interval is given by:

(0.27; 0.33)

We can find the estimaed proportion in the following way:

then the sample proportion would be 0.30

Answer:

15/16

Step-by-step explanation:

3/8 = 6/16

6/16+3/16=9/16

9/16+3/16=12/16

12/16+3/16=15/16