Which of the following is the graph

Which Of The Following Is The Graph

Answers

Answer 1

Option A : The circle represented in the third quadrant has the centre lying at (-3, -1)

What is equation of a circle ?

The location of a circle in the Cartesian plane is represented by a circle equation. We can construct the equation for a circle if we know the location of the circle's center and how long its radius is. All of the points on the circle's circumference are represented by the circle equation.

The group of points whose separation from a given point has a constant value are represented by a circle. The radius of the circle, abbreviated r, is a constant that describes this fixed point, which is known as the circle's center. The equation (x- x₁)²+(y-y₁)²=r²describes a circle with a center at (x₁,y₁) and a radius of r.

There are different forms to represent the equation of a circle :

General formStandard formParametric formPolar form

The equation of the circle is

(x + 3)² + (y + 1)² = 9

The centre of the circle will be at (-3, -1) from the equation .

Option A :The circle represented in the third quadrant has the centre lying at (-3, -1)

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Related Questions

There are 544 calories in eight ounces of a certain ice cream. How many calories are there in three pounds? 1

Answers

Answer:

Below

Step-by-step explanation:

Each pound has two 8 oz servings     so three pounds is 6 servings

6 x 544 =3264 cal

The blueprint for a circular gazebo has a scale of 2 inches=5 feet. The blueprint shows that the gazebo has a diameter of 5.1 inches. What is the actual diameter of the​ gazebo? What is its​ area? Use 3.14 for π.

Answers

The actual diameter of the gazebo is 12.75 feet and has an area of

127.6 square inches.

What is a scale factor?

The scale factor defines a variable in a ratio of two different measurements.

Sometimes drawings of large models are represented in a scale factor of a smaller unit.

Given, The blueprint for a circular gazebo has a scale of 2 inches = 5 feet.

So, The scale factor is (5/2) = 2.5 or 1 inch = 2.5 feet.

Also given, The gazebo has a diameter of 5.1 inches.

Therefore, The actual diameter of the gazebo is = 5.1×2.5 = 12.75 feet.

The area of the gazebo is π(12.75/2)² = 127.6 square inches.

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Find the value of x.

Answers

Answer:

x=65°

Step-by-step explanation:

Solution Given:

let the point having angle 115° be e.

and point having side containing a and c be f.

we have

∡bec+115°= 180° being linear pair

∡bec=180°-115°=65°

again

∡bec= ∡afc=65° being corresponding angle

again

∡afc=x°=65° being corresponding angle

Most jobs pay you per day.

A) True
B) False

Answers

Answer:

B) False

In most job, you will get paid on a weekly basis, usually on a Friday.

Step-by-step explanation:

Hope it helps! =D

If the test scores of a class of 36 students have a mean of 73.1 and the test scores of another class of 28 students have a mean of 67.4, then the mean of the combined group is

Answers

The mean of the combined group can be calculated as follows:

   Calculate the total sum of test scores of both classes:

   Class 1: 36 students * 73.1 mean = 2631.6

   Class 2: 28 students * 67.4 mean = 1888.32

   Total: 2631.6 + 1888.32 = 4519.92

   Calculate the total number of students:

   Total students = 36 + 28 = 64

   Divide the total sum of test scores by the number of students to find the mean:

   Mean = 4519.92 / 64 = 70.9375.

Therefore, the mean of the combined group of 64 students is 70.9375.

Please help!!
Thankyou!!

Answers

The scale factor is: 1.8

because of :

[tex]\frac{36}{20}=1.8\\ \\\\\frac{25.2}{14}=1.8[/tex]

Which inequality represents the graph?

Answers

The inequality that represents the graph is option D: 13x - 3y - 14 < 0.

What is an inequality?

In Algebra, an inequality is a mathematical statement that uses the inequality symbol to illustrate the relationship between two expressions. An inequality symbol has non-equal expressions on both sides. It indicates that the phrase on the left should be bigger or smaller than the expression on the right, or vice versa.

The x-intercept is a = 1.077

The y-intercept is b = -4.677

The equation of line having x-intercept a and y-intercept b is -

x/a + y/b = 1

The equation of line having x-intercept 1.077 and y-intercept -4.677 is -

x/1.077 + y/-4.677 = 1

y/-4.677 = 1 - x/1.077

y = (1 - x/1.077)-4.677

y = -4.677 + 4.677x/1.077

y = -4.677 + 4.342x

Multiply both sides by 3 -

3y = 3(-4.677 + 4.342x)

3y = -14.031 + 13.026x

Now, the line 3y = -14.031 + 13.026x divide the xy-plane in two regions and the region given in the graph is satisfied by the origin.

Also, the line 3y = 14.031 + 13.026x is dotted and not dark ,therefore, the points on the line are not included in the shaded region.

Therefore, the inequality that represents the shaded region is -

0 > - 3y - 14.031 + 13.026x ≈ 13x - 3y - 14 < 0

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The value of log 3 ⁡ 5 × log 25 ⁡ 9 is

Answers

The value of [tex]log_35 \times log_{25}9[/tex] is 1.

What is an expression?

An expression is a way of writing a statement with more than two variables or numbers with operations such as addition, subtraction, multiplication, and division.

Example: 2 + 3x + 4y = 7 is an expression.

We have,

[tex]log_35 \times log_{25}9[/tex]

[tex]log_ab = \frac{logb}{loga}[/tex]

So,

= log 5 / log 3 x log 9 / log 25

= log 5 / log 3 x log 3² / log 5²

[tex]logm^n = n~logm[/tex]

So,

= log 5 / log 3 x log 3² / log 5²

= (log 5 / log 3) x (2 log 3 / 2 log 5)

= (log 5 / log 3) x (log 3 / log 5)

= 1

Thus,

1 is the value.

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What is the slope of the linear relationship? a graph of a line that passes through the points 0 comma 3 and 2 comma negative 2 negative five halves five halves negative two fifths two fifths

Answers

The slope of the linear relationship is equal to: A. negative five halves.

How to calculate the slope of a line?

In Mathematics, the slope of a linear relationship can be determined by using this mathematical equation;

Slope (m) = (Change in y-axis, Δy)/(Change in x-axis, Δx)

Slope (m) = (y₂ - y₁)/(x₂ - x₁)

Based on the information provided, we can logically deduce the following slope and data points on the line:

Points on x-axis = (0, 2).Points on y-axis = (3, -2).

Substituting the given data points into the slope formula, we have the following;

Slope, m = (y₂ - y₁)/(x₂ - x₁)

Slope, m = (-2 - 3)/(2 - 0)

Slope, m = -5/2

Note: -5/2 is negative five halves.

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Answer: The Answer is A. -5/2

Step-by-step explanation: I took the test.

Which of the following functions is most likely to have the smallest value for y if x is large? (Assume k is positive.) a. a direct variation function with a small value for k c. an inverse variation function with a small value for k b. a direct variation function with a large value for k d. an inverse variation function with a large value for k

Answers

An inverse variation function with a small value for k. Therefore, option C is  the correct answer.

What is a proportional relationship?

Proportional relationships are relationships between two variables where their ratios are equivalent. Another way to think about them is that, in a proportional relationship, one variable is always a constant value times the other. That constant is known as the "constant of proportionality".

The association between x and y can be classified in two ways, as follows:

Direct proportional: when the input x increases, the output y also increases.

Inverse proportional: when the input x increases, the output y decreases.

For this problem, we need an inverse proportional function, that has the following format:

y = k/x.

The lower the value of k, the lower the value of y when x goes to infinity.

Therefore, option C is  the correct answer.

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Question
Each side of the base of a square pyramid measures 10 inches. The height of each lateral face of the pyramid is also 10 inches.

What is the surface area of the pyramid?

Enter your answer in the box.

in²

Answers

The surface area of the pyramid that has these measures is given as 300 inches square

How to solve for the surface area of the pyramid

The surface area of a square pyramid is the sum of the area of the base and the areas of the lateral faces.

The area of the base of the square pyramid is given by the formula for the area of a square:

A = s^2, where s is the length of one side of the square.

In this case, each side of the base measures 10 inches, so the area of the base is:

A = 10^2 = 100 square inches.

The lateral faces of the pyramid are triangles, and the surface area of each lateral face can be found using the formula:

A = (1/2)bh, where b is the length of the base and h is the height.

In this case, the height of each lateral face is 10 inches, and the base is a side of the square base, which measures 10 inches.

So the surface area of each lateral face is:

A = (1/2)(10)(10) = 50 square inches.

Since there are 4 lateral faces on a square pyramid, the total surface area of the lateral faces is 4 * 50 = 200 square inches.

Finally, the surface area of the pyramid is the sum of the surface area of the base and the lateral faces:

A = 100 + 200 = 300 square inches.

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Answer:

180 hope this helps!

Step-by-step explanation:

Land O' Lake's average annual household income in 2021


A) ~$62,000

B) ~$84,000

C) ~$96,000

D) ~$71,000

Answers

According to statistics, Land O' Lake's 2021 average annual household income was given at $84,146. Thus, the correct answer is Option B which indicates that the amount is approximately $84,000.

What is Average Annual Household Income?

Average Annual Household Income is the average amount of money earned annually by a household, calculated by dividing the total household income by the number of households. It provides a measure of the economic well-being of a particular group or population.

Average Annual Household Income is useful because it provides a broad overview of the economic well-being of a population and can be used to compare the standard of living across different regions, demographic groups, and over time. It is an important indicator of the economy's health and the distribution of wealth.

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You purchase 200 shares for $70 a share ($14,000), and after a year the price falls to $80. Calculate the percentage return on your investment if you bought the stock on margin and the margin requirement was (ignore commissions, dividends, and interest expense): 20 percent

Answers

Answer: First, calculate the total value of the shares after the price fall to $80:

value = 200 shares * $80/share = $16,000

Then, calculate the amount of money borrowed:

borrowed = $14,000 / (1 - margin requirement)

= $14,000 / (1 - 0.20)

= $14,000 / 0.80

= $17,500

Finally, calculate the percentage return on investment:

return = (value - borrowed) / borrowed * 100%

= ($16,000 - $17,500) / $17,500 * 100%

= -6.06%

The return on investment is -6.06%, meaning that the investment lost 6.06% of its value.

Step-by-step explanation:

HELPP!!!!!!!!!!
ASAPPP

Answers

Based on each given parallelogram, the correct answers are:

x = 9; y = 15m = 4; n = 10d = 126; z = 28unable to answer (not complete screenshot)∠B = 129°∠N = 85°LM = 13MN = 8.07LP = 7MQ = 16.4∠LMN = 80°∠NQL = 80°∠MNQ = 100°∠LMQ = 29°

Let's try to solve each parallelogram problems

1. In paralellogram, each parallel sides have equal lengths; then:

x // 9; then x = 9

y // 15; then y = 15

2.  In paralellogram, each parallel sides have equal lengths; then:

m + 1 // 5; then m + 1 = 5

m = 4

n // 10; then n = 10

3.  In paralellogram, each parallel sides have equal lengths; then:

z - 8 // 20; then z - 8 = 20

z = 28

Opposite angles share the same size; then:

d - 21 = 105

d = 126

4. Uncomplete screenshot

5. In parallelogram, adjacent angles is supplementary to each other; then:

∠A + ∠B = 180°

51 + ∠B = 180°

∠B = 129°

6. In parallelogram, adjacent angles is supplementary to each other; then:

∠M + ∠N = 180°

95 + ∠N = 180°

∠N = 85°

In the given parallelogram LMNQ, the length of MP is 8.2 and PN is 7. Angle ∠MQN is 29° and ∠MLQ is 100°.

7. LM can be calculated by focusing on triangle MLQ. Under the Sinus Law, we can find that:

LM / sin LQM = MQ / sin MLQ

MQ is one of the parallelogram diagonal. MP is the mid point, then MQ is twice of MP.

MQ = 2(8.2) = 16.4

∠MLQ = 100°

∠LQN = 180° - 100°

∠LQN = 80°

∠LQN = ∠LQM + ∠MQN

80° = ∠LQM + 29°

∠LQM = 51°

LM / sin 51 = 16.4 / sin 100

LM / 0.78 = 16.4 / 0.98

LM = 12.9 = 13

8. LQ is parallel with MN; then they share the same length.

LQ = MN

MN can be calculated by focusing on triangle QMN. Under the Sinus Law:

MN / sin MQN = MQ / sin MNQ

∠MNQ is the opposite angle of ∠LMQ, then ∠MNQ = ∠LMQ = 100

MN / sin 29 = 16.4 / sin 100

MN = 8.07

9. LP = PN = 7

10. MQ = 2 x MP

MQ = 2(8.2)

MQ = 16.4

11. ∠LMN = ∠LQN = 80°

12. ∠NQL = 80°

13. ∠MNQ = ∠MLQ = 100°

14. ∠LMQ is the alternate interior angle of ∠MQN; then ∠LMQ = ∠MQN = 29°

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Ergonomics Supply Inc., a wholesaler of office products, was organized on July 1 of the current year, with an authorization of 100,000 shares of 2% preferred stock, $40 par and 300,000 shares of $25 par common stock. The following selected transactions were completed during the first year of operations:

Answers

The journal entry for the issuing of 1, 000 shares of common stock as payment for legal fees is:

Date               Account title                                  Debit                 Credit

July 1              Organizational expenses           $ 25, 000

                      Common stock                                                   $ 25, 000

How to record the transaction ?

The first thing to do is to find the par value of the common stock that was exchanged. This amount is :

= 1, 000 x 25

= $ 25, 000

This amount will be debited to organizational expenses because expenses are debited when incurred. This same amount is to be credited to common stock to show that the attorney is now a shareholder in the firm.

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The question is:

Jul. 1. Issued 1,000 shares of common stock at par to an attorney in payment of legal fees for organizing the corporation.

Gabriella went to Tiers of Joy Bakery to buy her mom’s birthday cake. The cake was $25.52, which left Gabriella with $24.48 to spend on her mom’s present. Let a be the amount of money Gabriella had before buying the cake. Write and solve an equation to find a.

Answers

Answer: $50

Step-by-step explanation:

Let's denote the amount of money Gabriella had before buying the cake as "a". Then we can write an equation to find "a":

a - $25.52 = $24.48

Adding $25.52 to both sides:

a = $25.52 + $24.48

So,

a = $50

Therefore, Gabriella had $50 before buying the cake.

In a random sample of 80 Americans, 36 wished that they were rich. In a random sample of 90 Europeans, 49 wished that they were rich. At α = 0.01, is there a difference in the proportions? Find the 99% confidence interval for the difference of the two proportions.

Answers

The difference between the percentage of Americans who want to be rich and the percentage of Europeans who want to be rich, according to our 95% confidence level, is between (-0.078, -0.101).

What is a confidence interval?

The mean of your estimate plus and minus the range of that estimate constitutes a confidence interval. Within a specific level of confidence, this is the range of values you anticipate your estimate to fall within if you repeat the test.

In statistics, confidence is another word for probability

Given In a random sample of 80 Americans, 36 wished that they were rich. In a random sample of 90 Europeans, 49 wished that they were rich.

Let p₁ = probability of Americans wanting to rich

p₂ = probability of Europeans wanting to rich

p₁ = 36/80 = 0.45

p₂ = 49/90 = 0.54

so CI = (p₁ - p₂) ± z₁(p₁p₂/n₁ + p₁p₂/n₂)

CI = (0.45 - 0.54) ± 1.96(0.0236)(0.243)

CI  = -0.09 ± 0.0112

(-0.078, -0.101)

Hence the difference of the two proportions is between (-0.078, -0.101).

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) Write a system of equations to describe the situation below, solve using substitution, and
fill in the blanks.
D) Quinn has $625 in his retirement account, and Ryan has $627 in his. Quinn is adding $12
per day, whereas Ryan is contributing $10 per day. Eventually, the two accounts will contain
the same amount. What balance will each account have? How long will that take?
(0) Quinn and Ryan will each have a retirement account balance of $
days.
after

Answers

On solving the provided question, we can say that equation for Quinn  = > 625 + 12x and equation for Ryan =>  627 - 10x.

What is equation?

A mathematical equation is a formula that joins two statements and uses the equal symbol (=) to indicate equality. A mathematical statement that establishes the equality of two mathematical expressions is known as an equation in algebra. For instance, in the equation 3x + 5 = 14, the equal sign places the variables 3x + 5 and 14 apart. The relationship between the two sentences on either side of a letter is described by a mathematical formula. Often, there is only one variable, which also serves as the symbol. for instance, 2x – 4 = 2.

Quinn has $625 in his retirement account, and Ryan has $627

Quinn is adding $12 per day

equation for Quinn  = > 625 + 12x, x is no. of days

Ryan is contributing $10 per day

equation for Ryan =>  627 - 10x, x is no. of days

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Six players on the Sluggers baseball team are pitchers. The pitchers make up 25% of the
team. How many players are on the Sluggers baseball team

Answers

Answer:

24

Step-by-step explanation:

If there are 6 pitchers on the Sluggers and they make up 25% or 1/4th of the team, you can just add 6 (1/4th) to itself to 3 more times to gett 100% or 4/4ths.

6+6+6+6 (or 6×4) is 24.

The expression (5y + 2)(y - 3) is equivalent to:

Answers

The expression is equivalent to 5y² - 13y - 6. The length of the line segment is √82. The correct option is J.

Algebra and Length in coordinate plane

The first question is about algebra with two variables. To calculate the algebra, sum up all the same variable and count the value.

We have an mathematical expression: (5y + 2)(y - 3).

Find the equivalent value!

The equivalent value is

= (5y + 2)(y - 3)

= 5y² + (-15y) + 2y - 6

= 5y² - 13y - 6

The expression of (5y + 2)(y - 3) is equivalent to 5y² - 13y - 6.

The second question is about length in coordinate plane. The following is the formula for the length in coordinate plane.

d = √[(x₂ - x₁)² + (y₂ - y₁)²]

A line segment with endpoints (-6, 2) and (3, 1).

Find the length!

From the endpoints, we have

x₁ = -6y₁ = 2x₂ = 3y₂ = 1

The length is

d = √[(3 - (-6))² + (1 - 2)²]

d = √[9² + (-1)²]

d = √[81 + 1]

d = √82

Hence,

The equivalent value is 5y² - 13y - 6.The line segment has a length of √82.

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581 divided by 8 with remainder

Answers

Answer:

581 divided by 8 should be 72 with a remainder of 5

Step-by-step explanation:

to check if i was correct i did 72 times 8 plus 5 and got 581

Graph 2, 1, and –1 on the number line.

Answers

Answer: 2 would be on the 3rd number on the number line, 1 would be before that, and negative one is 1 below 0 means it would be the one in between -2 and 0. Have a nice day ;)

Carry your intermediate computations
to at least four decimal places, and round your answer to at least one decimal place.

Answers

The mean of the histogram is 904.8

How to determine the mean of the histogram

The mean of the histogram is calculated as

Mean = Sum of the product of carrying load and frequency/Sum of frequency

Using the above as a guide, we have the following:

Mean = (870 * 5 + 890 * 7 + 910 * 8 + 930 * 4 + 950 * 3)/(5 + 7 + 8 + 4 + 3)

Evaluate

Mean = 904.8

Hence, the mean is 904.8

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Lydia has money in two savings accounts. One rate is 12% and the other is 13%. If she has $850 more in the 13% account and the total interest is $388, how much is invested in each savings account?

Answers

Lydia invested an amount of $1110 in the 12% savings account and $1960 in the 13% savings account.

Let's assume the amount invested in the 12% savings account "x". Then, the amount invested in the 13% savings account would be "x + 850".

The total interest earned is $388, so we can write the following two equations to represent the interest earned in each account:

0.12x + 0.13(x + 850) = 388

Expanding the second equation, we get:

0.12x + 0.13x + 110.5 = 388

Combining like terms and simplifying, we get:

0.25x = 277.5

Dividing both sides by 0.25, we get:

x = 1110

So, she invested $1106 in the 12% savings account and $1110 + 850 = $1960 in the 13% savings account.

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discuss four contribution of the slave trade positive and negative effect​

Answers

According to Eltis, the Atlantic economy became more beneficial to slavery as a result of the rising demand for commodities that could be produced at a low cost by slaves, such as sugar, coffee, tobacco, and cotton textiles.

What benefit did the slave trade provide? According to Eltis, the Atlantic economy became more beneficial to slavery as a result of the rising demand for commodities that could be produced at a low cost by slaves, such as sugar, coffee, tobacco, and cotton textiles.Afric a's impact of slavery.Competitors absorbed competitor states, destroying them utterly and decimating their populations.Towns and villages were depopulated, and millions of Africans were forcibly uprooted from their homes.During the slaving battles, many Africans died or remained in slavery in their native continent.The findings support the historical evidence by showing that the repercussions of the slave trades are seen in ethnic fragmentation, weakened governments, and a deterioration in the standard of domestic institutions.

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1. Starting at the initial side, make 3.3 rotations counterclockwise.
a. What is the angle measure?
b.Name a positive angle and a negative angle that are both coterminal to the angle
c. In what quadrant is the terminal side of the angle?
d. What is the reference angle?

Answers

Answer:

(+7)[(-12)-(+8)]

Step-by-step explanation:

(+7)[(-12)-(+8)

a parcel can be sent by a frieghter at a cost of MVR 20 per kg .The same parcel can be sent by cargo boat at a cost of MVR 280 per parcel . If the weight of the parcel is 13kg,which option is cheaper ti choose ?​

Answers

The better option to choose is MVR 20 per kg

How to find the weight of the parcel?

A parcel can be sent by a freighter at a cost of MVR 20 per kg . The same parcel can be sent by cargo boat at a cost of MVR 280 per parcel .

The weight of the parcel is 13 kg. Let's find the better options as follows:

Therefore, let's convert

Hence, the cost of using cargo boat is  MVR 280 per parcel.

Recall

1 parcel = 13 kg

This means the cargo ship cost MVR 280 for 13 kilograms of the goods.

Therefore, the better option is the cost of MVR 20 per kg .

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The accompanying data represent the miles per gallon of a random sample of cars with a​ three-cylinder, 1.0 liter engine.
​(a)
Compute the​ z-score corresponding to the individual who obtained miles per gallon. Interpret this result.
​(b)
Determine the quartiles.
​(c)
Compute and interpret the interquartile​ range, IQR.
​(d)
Determine the lower and upper fences. Are there any​ outliers?
LOADING... Click the icon to view the data.

Answers

The table is given as,

Z- Score     -0.299

Q₁                  36.47

Q₂                  38.45

Q₃                  41.2

IQR               4.25

Lower fourth   30.375

Upper fourth       47.375

What is z- score?

An illustration of a standardised score is the z-score. A z-score calculates how far a data point deviates from the distribution's mean by standard deviation.

Given:

Sample Data = 31.5, 36.0, 37.8, 38.5, 40.1, 42.2, 34.2, 36.2, 38.1, 38.7, 40.6, 42.5, 34.7, 37.3, 38.2, 39.5, 41.4, 43.4, 35.6, 37.6, 38.4, 39.6, 41.7, 49.3

(a) The value of z-score is calculated as follows,

μ =[tex]\sum_{i=1}^n X_i[/tex]/ n = 933.1 /24 = 38.88

σ = 3.61

z = X - μ / σ  

  = 37.8 - 38.88/3.61

  = −  0.299

Therefore, the value of z-score is -0.299.

(b) Quartile:

Recalling the values: 31.5, 36, 37.8 ,38.5, 40.1 ,42.2, 34.2 ,36.2, 38.1, 38.7, 40.6 ,42.5, 34.7, 37.3 ,38.2, 39.5 ,41.4, 43.4, 35.6, 37.6 ,38.4 ,39.6 ,41.7, 49.3

Q₁ = ( n+1/4)th value

= (24+1/4)th value

= 6.25th value  

=  36.2 + 0.25 x ( 37.3 −  36.2 )  

= 36.47

and, M = ( n+1/2)th value

= (24+1/2)th value

= (24+1/4)th value

=  12.5 t h

= 38.4 + 38.5/2

= 38.45

Q₃ = 3( n+1/4)th value

= 3(24+1/4)th value

= 18.75 t h  v a l u e

= 40.6 + 0.75 x ( 41.4  −  40.6 )  

= 41.2

(c) Interquartilerange =  Q ₃ −  Q ₁  

= 41.2  −  36.47  

= 4.25

Therefore, the IQR value is measure of spread of data, and here the value of IQR = 4.25.

(d) Lower fences =  Q₁− 1.5 ( I Q R )  

                            =  36.75 −  1.5  ( 4.25 )  

                            =   30.375  

Upper fences = Q ₃+1.5

                       =  41 + 1.5( 4.25 )  

                       = 47.375

Hence, there is outliers since observations are not less than 30.375 and greater than 47.375.

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Find the distance between the following numbers on the real number line
a=-11, b=1

Answers

Answer:

Step-by-step explanation:

12.

1+|-11|=12

lol

Elizabeth is thinking of a two-digit number. When the tens digit is subtracted from the ones digit, the difference is 2. One-fifth of the number is 1 less than the sun of the digits. What is the number?

Answers

The two digit number is 35.

What is equation modelling?

Writing a mathematical statement in the form of a mathematical equation for the correct analysis, measurement and solutions.

Given is that Elizabeth is thinking of a two - digit number. When the tens digit is subtracted from the ones digit, the difference is 2. One-fifth of the number is 1 less than the sun of the digits.

Let the number be (xy).

We can write the two digit number as -

xy = 10x + y                                                   ... Eq { 1 }

Now, it is given that when the tens digit is subtracted from the ones digit, the difference is 2. We can write -

y - x = 2                                                              ... Eq { 2 }

Also, one - fifth of the number is 1 less than the sun of the digits. We can write -

(1/5)(10x + y) = (x + y) - 1                                         ... Eq { 3 }

Now, from eq { 1 } and eq { 2 }, we have -

y - x = 2    

y = x + 2

and

(1/5)(10x + y) = (x + y) - 1    

(1/5)(10x + x + 2) = (x + x + 2) - 1

(1/5)(11x + 2) = 2x - 1

11x + 2 = 10x - 5

x = - 7

y = -5

So, the number would be -

xy = 35

Therefore, the two digit number is 35.

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