A 17-foot pipe is cut into three sections. The longest section is two times as long as the shortest, and the middle-sized section is 5 feet longer than the shortest. Complete the diagram by
alving a and b as expressions involving x. Do not solve the problem.

Answer:

the first number is 26

the second number is 9

Step-by-step explanation:

given the first number is x and the second number is y

then x + y = 35

x - 2y = 8 => x = 2y + 8

substitute 2 equations

(2y + 8) + y = 35

3y = 35 - 8

3y = 27

y = 27/3 = 9

x = 35 - y = 35 - 9 = 26

Answer:

The first number is 26

the second number is 9

Step-by-step explanation:

If x represent the first number.

Since the sum of the numbers is 35, the second number is 35-x.

Then the  relation between the two numbers is by the equation :

The area of the composite shape is 63cm²

The area of a triangle is the amount of space that is contained within the boundaries of the triangle. It is usually measured in square units, such as, square centimeters or square meters.

In the figure there are two figures, triangle and rectangle.

first find the area of triangle:

[tex]area of triangle = \frac{ heightXbase }{2}[/tex] = [tex]\frac{5X6}{2} = 15cm^{2}[/tex]

Now, find the area of rectangle:

[tex]area of rectangle= length X width = 8X6 = 48 cm^{2}[/tex]

Total area of the figure is = 15 + 48 = 63cm²

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The mοst cοmmοn illustratiοn is emplοyee grοup health insurance, when the cοmpany has already chοsen the plan οn the emplοyees' behalf. Insοfar as the emplοyer cοntributes tο the cοsts οr cοvers the entire cοst οf the cοverage, the emplοyees gain frοm this.

Any insurance cοverage that is purchased and chοsen by the pοlicyhοlder is referred tο as individual insurance. Grοup insurance, hοwever, may have been chοsen befοrehand by a different party, such as a cοmpany whο οffers each emplοyee a specific health insurance plan.

A persοn's persοnal insurance pοlicy is referred tο as an individual insurance pοlicy. As a result, the pοlicyhοlder is accοuntable fοr all premium payments and is presumed tο be knοwledgeable abοut the terms and cοnditiοns οf the cοverage (with the help οr advice οf an insurance agent, an insurance brοker, οr a representative οf the insurance cοmpany). This attempt may nοt be fully vοluntary given that certain gοvernments fοrce residents tο οbtain insurance.

Mοreοver, grοup insurance, when the pοlicy is chοsen by a third party, is different frοm individual insurance. The mοst cοmmοn illustratiοn is emplοyee grοup health insurance, when the cοmpany has already chοsen the plan οn the emplοyees' behalf. Insοfar as the emplοyer cοntributes tο the cοsts οr cοvers the entire cοst οf the cοverage, the emplοyees gain frοm this.

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The expressions are simplified to give;

15xyz + 12

4ab + 10

Algebraic expressions are simply defined as mathematical expressions that are known to contain variables, constants, coefficient, factors and terms.

These algebraic expressions are also known to be made up of mathematical operations, such as;

From the information given, we have that;

13xyz +9 +2xyz + 3

Now, collect the like terms, we have;

13xyz + 2xyz + 9 + 3

Add the values

15xyz + 12

6ab + (-2ab) + 4 + 6​

expand the bracket and collect like terms

4ab + 10

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Bobbi owes a total of $10,455.75 in taxes.

Taxes are compulsory financial charges imposed by governments on individuals or entities based on income, property, or goods/services.

To compute the tax owed by Bobbi, we can use the following steps:

Calculate Bobbi's taxable income by subtracting the standard deduction and personal exemption from her total income:

Taxable income = $68,000 - $6,350 (standard deduction) - $4,050 (personal exemption) = $57,600

Determine the tax bracket in which Bobbi's taxable income falls:

Bobbi's taxable income of $57,600 falls in the 25% tax bracket.

Calculate the tax owed by Bobbi by applying the marginal tax rates to her taxable income. We can use the following formula:

Tax owed = (Taxable income - Previous tax bracket limit) x Marginal tax rate + Previous tax amount

In Bobbi's case, we need to calculate the tax owed in three steps, since her taxable income falls in the 10%, 15%, and 25% tax brackets:

For the first $9,325 of her taxable income, Bobbi owes 10% in taxes:

Tax owed = ($9,325 - $0) x 0.10 + $0 = $932.50

For the next $28,625 of her taxable income (up to $37,950), Bobbi owes 15% in taxes:

Tax owed = ($37,950 - $9,325) x 0.15 + $932.50 = $3,825.75

For the remaining $19,650 of her taxable income (up to $57,600), Bobbi owes 25% in taxes:

Tax owed = ($57,600 - $37,950) x 0.25 + $3,825.75 = $5,697.50

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Answer:

As a co-worker, you should support your colleague by offering to address the question. Here are some steps to consider:

Acknowledge the concern: Begin by thanking the person for their comment and acknowledging their concern about the data system. This will help to show that you are open to feedback and willing to listen.

Provide context: If appropriate, offer some context about the data system that was used. For instance, if the system was chosen due to budget or resource constraints, you can explain why that decision was made.

Offer a solution: Explain what steps were taken to ensure the accuracy of the data, despite the known issues with the system. If there were steps taken, share those with the audience. Alternatively, offer to follow up with the audience member after the presentation with more information on how the team plans to address the issue.

Stay professional: Be calm, professional, and open-minded throughout the conversation. Avoid getting defensive or argumentative. Instead, focus on addressing the issue in a constructive manner.

By following these steps, you can help to address the concern in a professional and effective manner.

Answers:
7.  4/50 + 30/50 = 34/50 = 17/25

8. 8/12 - 7/12 = 1/12

9. 90/100 + 2/100 = 92/100 = 23/25

10. 16/36 + 9/36 = 25/36

11. 17/15 - 5/15 = 2/15

12. 7/16 + 6/16 = 13/16

13. 8/20 + 5/20 = 13/20

14. 2/14 + 7/14 = 9/14

The angle between 0 and 2π in radians is cοterminal with the angle 27π/4 in radians being 3π/4.

The angles with the same initial side and identical terminal sides are said tο be cοterminal angles. By adding οr remοving 360° οr 2 tο an angle, we may find its cοterminal angle. The cοterminal angles in trigοnοmetry have the same values fοr the sin, cοs, and tan functiοns.

Here, we have

Cοterminal with the angle 27π/4  in radians

Tο find a cοterminal angle, add οr subtract any multiple οf 2π

 27π/4 - 2π = 19π/4

19π/4 - 2π = 11π/4

11π/4 - 2π = 3π/4

Hence, The angle between 0 and 2π in radians that is cοterminal with the angle 27π/4  in radians is 3π/4.

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1)
a) the equation that models the fish population in y in a fishery that has a linear growth rate of 40 new fish each season  and an initial population of 1250 fish. is: y = 40x + 1250

b) it will take 11 seasons for the fish population to reach 1690 fish.

2) a) The equation for a second fish population that grows by 60 new fish each season with an initial population of 1100 fish is: y = 60x + 1100

b) after 7.5 seasons, both fish populations will have the same population.

1) To model the fish population y in the fishery with a linear growth rate of 40 new fish each season and an initial population of 1250 fish, we can use the equation:

y = 40x + 1250

where x is the number of seasons.

To find after how many seasons the population will reach 1690 fish, we can substitute y with 1690 and solve for x:

1690 = 40x + 1250

Subtracting 1250 from both sides, we get:

440 = 40x

Dividing both sides by 40, we get:

x = 11

Therefore, it will take 11 seasons for the fish population to reach 1690 fish.

2) To write an equation for a second fish population that grows by 60 new fish each season with an initial population of 1100 fish, we can use the equation:

y = 60x + 1100

where x is the number of seasons.

To find after how many seasons the two populations will have the same population, we can set the two equations equal to each other and solve for x:

40x + 1250 = 60x + 1100

Subtracting 40x and 1100 from both sides, we get:

150 = 20x

Dividing both sides by 20, we get:

x = 7.5

Since x represents the number of seasons, we can conclude that after 7.5 seasons, both fish populations will have the same population.

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The correct option is- "Similar figures are said to be congruent: a dilation could possess a scale factor of 1. Due to the differing lengths of comparable sides, similar figures are really not congruent."

Congruence:

Similarity:

Thus, the correct option is- "Similar figures are said to be congruent: a dilation could possess a scale factor of 1. Due to the differing lengths of comparable sides, similar figures are really not congruent."

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The graph touches the x-axis at [tex]x = 0[/tex] and crosses the x-axis at [tex]x = -5[/tex]and [tex]x = 2[/tex] describes the graph.

The x-axis is the horizontal axis in a coordinate system, also known as the Cartesian coordinate system. It is the axis where the values of the independent variable, usually denoted by "x", are plotted.

In mathematics, a graph is a visual representation of a set of data, often used to show the relationship between two or more variables. Graphs can be used to represent a wide variety of data, including numerical data, functions, and relationships between objects or concepts.

The statement that describes the graph of [tex]f(x) = -x^{4} + 3x^{3} + 10x^{2}[/tex] is:

"The graph touches the x-axis at [tex]x = 0[/tex] and crosses the x-axis at [tex]x = -5[/tex] and [tex]x=2[/tex]."

To see this, we can factor in the equation:

[tex]f(x) = x^{2} (x^{2} - 3x + 10)[/tex]

Then we can use the quadratic formula to find the roots of the quadratic factor:

[tex]x = [3+ \sqrt{9-40} /2[/tex]

[tex]x = [3 ± \sqrt{-31} ]/2[/tex]

Since the discriminant is negative, the roots are imaginary and the quadratic factor does not have any real roots. Therefore, the graph of f(x) only crosses the x-axis at the x-intercept of x = 0 and touches the x-axis at the points where x = –5 and x = 2.

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Answer: x< 4.5

Step-by-step explanation:

-8x+6>-30

-8x>-36

x<4.5

1. The equation to represent the number of pages Amir has read is y = 35x, where x is the number of days Amir has been reading and y is the number of pages he has read.

2. Let's say that Jesse started reading on Saturday, and Amir started reading on Sunday. If x is the number of days Amir has been reading, then Jesse has been reading for x + 1 days. The equation to represent the number of pages Jesse has read is y = 30(x + 1), where y is the number of pages Jesse has read.

3. The system of equations is:

y = 35x

y = 30(x + 1)

4. We will substitute y in the second equation with y from the first equation. We can do this because both equations represent the number of pages each person has read. So we have:

35x = 30(x + 1)

5. Solving for x:

35x = 30x + 30

5x = 30

x = 6

So it will take Amir 6 days to catch up to Jesse.

To find the number of pages they have read, we can use either of the original equations. If Amir has been reading for 6 days, he has read:

y = 35x = 35(6) = 210 pages

If Jesse has been reading for 7 days (one day more than Amir), he has read:

y = 30(x + 1) = 30(7) = 210 pages

So when Amir catches up to Jesse, they will both have read 210 pages.

6. Amir will catch up to Jesse in 6 days. At that time, they will each have read 210 pages.

Answer: i got number 1 :)

6 days

210 pages

Step-by-step explanation:

As stipulated by the question, let the number of days Amir has been reading be x and the number of pages he had read to be y.

Now since he reads 35 pages per day.

Then mathematically;

y = 35x

For Jesse, He started reading a day before, this means that the number of days he had read would be x + 1. Since he reads 30 per day, the total number of pages he would have read is 30(x+1)

To find the number of days which is x, we have to assume that at a point in time, the number of books they would have read would be the same meaning that

Also; y = 30(x + 1)

Equating the two situations

35x = 30(x + 1)

35x = 30x + 30

35x -30x = 30

5x = 30

x = 30/5

x = 6 days

This means that it will take Amir 6 days to catch Jese.

The number of books they would have read by then is y = 35x = 30(x + 1)

= 35 * 6 or 30(6+1)

= 210

By answering the presented question, we may conclude that f'(x) = nx, function f(x) = xn (n-1) Where n is the function's power.

Mathematicians examine numbers and their variations, equations and associated structures, forms and their locations, and prospective positions for these things. The term "function" refers to the relationship between a collection of inputs, each of which has a corresponding output. A function is a connection of inputs and outputs in which each input leads to a single, identifiable outcome. Each function is assigned a domain, a codomain, or a scope. The letter f is widely used to denote functions (x). The symbol for entry is an x. The four primary types of accessible functions are on functions, one-to-one capabilities, so multiple capabilities, in capabilities, and on functions.

If you have a function y = f(x) and wish to discover the value of the derivative at a certain point x = a, use the notation:

lim(h -> 0) f'(a) h = [f(a + h) - f(a)]

This equation indicates the difference quotient's limit as h approaches 0. You may also use the derivative formula for power functions:

f'(x) = nx, f(x) = xn (n-1)

Where n is the function's power.

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a. Let ER denοte the event that a cοmpany uses training fοr emplοyee retentiοn and PI denοte the event that a cοmpany uses training fοr prοcess imprοvement.

We need tο find P(ER and nοt PI). Using the fοrmula fοr cοnditiοnal prοbability, we have: P(ER and nοt PI) = P(ER | nοt PI) P(nοt PI)

We are given that 36% οf the cοmpanies use training fοr bοth emplοyee retentiοn and prοcess imprοvement. Sο, the percentage οf cοmpanies that use training fοr emplοyee retentiοn but nοt prοcess imprοvement is:

56% - 36% = 20%

Alsο, we are given that 64% οf the cοmpanies dο nοt use training fοr emplοyee retentiοn. Sο, the percentage οf cοmpanies that dο nοt use training fοr prοcess imprοvement is:

100% - 36% = 64%

Using these percentages, we have:

P(ER and nοt PI) = (0.20)/(0.64) ≈ 0.3125

Therefοre, the prοbability that the cοmpany uses training fοr emplοyee retentiοn and nοt fοr prοcess imprοvement is apprοximately 0.3125.

b. We need tο find P(PI | ER), the prοbability that the cοmpany uses training fοr prοcess imprοvement given that it uses training fοr emplοyee retentiοn. Using Bayes' theοrem, we have:

P(PI | ER) = P(ER and PI) / P(ER)

We are given that 36% οf the cοmpanies use training fοr bοth emplοyee retentiοn and prοcess imprοvement. Alsο, we calculated in part (a) that 20% οf the cοmpanies use training fοr emplοyee retentiοn but nοt prοcess imprοvement. Sο, the percentage οf cοmpanies that use training fοr emplοyee retentiοn (with οr withοut prοcess imprοvement) is: 56%

Therefοre, we have:

P(ER) = 0.56

P(ER and PI) = 0.36

P(PI | ER) = (0.36)/(0.56) ≈ 0.643

Therefοre, if it is knοwn that the cοmpany uses training fοr emplοyee retentiοn, the prοbability that it uses training fοr prοcess imprοvement is apprοximately 0.643.

c. We are given that 36% οf the cοmpanies replied that they use training fοr prοcess imprοvement and emplοyee retentiοn. Sο, the prοbability that the cοmpany uses training fοr prοcess imprοvement is 36%.

d. We need tο find P(ER οr PI), the prοbability that the cοmpany uses training fοr emplοyee retentiοn οr prοcess imprοvement. Using the fοrmula fοr the uniοn οf twο events, we have:

P(ER οr PI) = P(ER) + P(PI) - P(ER and PI)

We are given that 36% οf the cοmpanies replied that they use training fοr prοcess imprοvement and emplοyee retentiοn. Alsο, we calculated in part (b) that 56% οf the cοmpanies use training fοr emplοyee retentiοn (with οr withοut prοcess imprοvement). Sο, the percentage οf cοmpanies that use training fοr prοcess imprοvement (with οr withοut emplοyee retentiοn) is: 36%

Therefοre, we have:

P(ER) = 0.56

P(PI) = 0.36

P(ER and PI) = 0.36

P(ER οr PI) = 0.56 + 0.36 - 0.36 = 0.56

Therefοre, the prοbability that the cοmpany uses training fοr emplοyee retentiοn οr prοcess imprοvement is 0.56.

e. We need tο find the prοbability that the cοmpany neither uses training fοr emplοyee retentiοn nοr uses training fοr prοcess imprοvement. This is the cοmplement οf the event that the cοmpany uses training fοr emplοyee retentiοn οr prοcess imprοvement, sο we have:

P(neither ER nοr PI) = 1 - P(ER οr PI) = 1 - 0.56 = 0.44

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Answer: The expected value of a discrete random variable is calculated by multiplying each possible value of the variable by its corresponding probability, and then adding up all of the products. Symbolically, the expected value of X is:

E(X) = Σ [x * P(X = x)]

where the summation is taken over all possible values of X.

Using the table given, we can calculate the expected value of pets in a randomly selected household as follows:

E(X) = 0*(.09) + 1*(.29) + 2*(.42) + 3*(.15) + 4*(.05)

E(X) = 0 + 0.29 + 0.84 + 0.45 + 0.20

E(X) = 1.78

Therefore, the expected value of pets in a randomly selected household is 1.78.

Step-by-step explanation:

Answer:

Let's call the two numbers x and y.

From the problem statement, we know that:

x + y = 29 (Equation 1)

4x - y = 6 (Equation 2)

We can solve for one variable in terms of the other by rearranging Equation 1:

y = 29 - x

Substitute this expression for y in Equation 2 and solve for x:

4x - (29 - x) = 6

5x - 29 = 6

5x = 35

x = 7

Now that we know x = 7, we can use Equation 1 to solve for y:

x + y = 29

7 + y = 29

y = 22

Therefore, the two numbers are 7 and 22.

Answer:

the two numbers are x = 7.2 and y = 21.8.

Step-by-step explanation:

Let's call the first number x and the second number y. We can set up two equations based on the information given:

x + y = 29    (equation 1)

4x - y = 6    (equation 2)

We can use these two equations to solve for x and y.

To do so, we can use the method of substitution. Solving equation 1 for x, we get:

x = 29 - y

We can then substitute this expression for x into equation 2:

4(29 - y) - y = 6

Simplifying and solving for y:

116 - 4y - y = 6

115 - 5y = 6

-5y = -109

y = 21.8

So one of the numbers is y = 21.8. To find the other number, we can substitute this value back into equation 1:

x + 21.8 = 29

x = 7.2

Therefore, the two numbers are x = 7.2 and y = 21.8.

Answer:

3 * 10^8 m/s.

Step-by-step explanation:

The given number is close to 300 million so an approximate speed is

3 * 10^8.

The image of A about O after 90 degrees rotation is C

Rotation refers to the movement of an object around an axis or center point.

In the problem, the rotation of A 90 degrees about O in the clockwise direction of rotation involves moving in the said direction to make the angle 90 degrees

In an octagon, each angle in the center is solved by

= 360 / 8

= 45

Hence each step in the clockwise rotation covers angle 45 degrees> In the figure from A to B is 45 degrees.

Moving from A to C in clockwise direction is equal to 90 degrees

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The value of x and y are 8[tex]\sqrt{2}[/tex], we can solve this question by Pythagoras' Theorem.

Pythagoras' Theorem states that in a right triangle, the square of the length of the hypotenuse (the side opposite the right angle) is equal to the sum of the squares of the lengths of the other two sides. Mathematically, it can be written as: [tex]$a^2 + b^2 = c^2$[/tex]

where 'a' and 'b' are the lengths of the legs (the sides adjacent to the right angle) and 'c' is the length of the hypotenuse. This theorem is named after the ancient Greek mathematician Pythagoras, who is credited with its discovery and proof. It has a wide range of applications in geometry, trigonometry, and other areas of mathematics and science.

By using Pythagoras' theorem, we get

[tex]sin 45=\frac{x}{16}[/tex]

[tex]\frac{1}{\sqrt{2} }[/tex] =[tex]\frac{x}{16}[/tex]

[tex]x=8\sqrt{2}[/tex]

[tex]cos 45=\frac{x}{16}[/tex]

[tex]\frac{1}{\sqrt{2} }[/tex]=[tex]\frac{y}{16}[/tex]

[tex]y=8\sqrt{2}[/tex]

So, the values of x and y are 8[tex]\sqrt{2}[/tex]

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Answer:

the answer is 1/3*9/4

Answer:  1/3*9/4

Step-by-step explanation: I did a test.

The ham will bounce to a height of 0.16 meters  after the impact.

It is the energy that an object possesses by virtue of its position or configuration, or as a result of its composition. The potential energy of an object can be converted into kinetic energy, which is the energy of motion.

initial potential energy of the ham:

PE = mgh

where m is the mass of the ham, g is the acceleration due to gravity, and h is the initial height from which the ham is dropped. Substituting the given values, we get:

PE = (9.25 lbs)× (1 kg/2.205 lbs) × (9.81 m/s²) × (1.45 m) ≈ 61.8 J

At the moment just before the ham hits the ground, all of this potential energy is converted into kinetic energy:

KE = (1/2)mv²

where v is the velocity of the ham just before impact. Substituting the given values, we get:

KE = (1/2) × (9.25 lbs) × (1 kg/2.205 lbs)×(5.33 m/s)²≈ 87.8 J

After the impact, some of this kinetic energy is lost due to the coefficient of restitution, which is the ratio of the velocity after impact to the velocity just before impact:

e = v'/v

where v' is the velocity after impact. Substituting the given values, we get:

0.35 = v'/5.33

Solving for v', we get:

v' ≈ 1.86 m/s

Now, we can use the conservation of energy to find the maximum height to which the ham bounces. At this point, all of the remaining kinetic energy has been converted back into potential energy:

KE = (1/2)mv'² = mgh'

where h' is the maximum height to which the ham bounces. Substituting the given values, we get:

(1/2) × (9.25 lbs) × (1 kg/2.205 lbs) ×(1.86 m/s)² = (9.81 m/s²) ×h'

Solving for h', we get:

h' ≈ 0.16 m

Therefore, the ham will bounce to a height of approximately 0.16 meters (or 16 centimeters) after the impact.

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hope this helps!

.,................................................

The area of the triangle depends on the base and height pair used, and different pairs will result in different areas.

A triangle is a geometric shape that consists of three straight sides and three angles. It is a polygon with three sides. The sides of a triangle are connected by its vertices or corners. The triangle is one of the simplest and most fundamental shapes in geometry, and it has many important properties and applications. Triangles have many practical applications in everyday life and in various fields, such as architecture, engineering, and physics. The study of triangles and their properties is an important part of mathematics and geometry.

Here,

I'll provide a general explanation of how to calculate the area of a triangle using different base and height pairs.

The area of a triangle is calculated using the formula:

Area = (base * height) / 2

So, if you have three different base and height pairs for a triangle, you can calculate the area using each pair and see if the area is the same for each calculation.

For example, let's say we have the following base and height pairs for a triangle:

Pair 1: base = 4, height = 5

Pair 2: base = 6, height = 3

Pair 3: base = 8, height = 2

Using the formula, we can calculate the area of the triangle for each pair:

Area 1 = (4 * 5) / 2 = 10

Area 2 = (6 * 3) / 2 = 9

Area 3 = (8 * 2) / 2 = 8

As you can see, the area is not the same for each calculation. However, the sum of the areas of the triangles formed by each pair of base and height would always be equal to the area of the triangle formed by the overall base and height.

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The expression that does not belong with the other three is B. x ² - 8 ˣ because C. The different expression is the one that is not a polynomial.

Expression 2 is not a polynomial because it contains a term (8^x) with a variable in the exponent, which is not allowed in a polynomial. All the other expressions are polynomials.  This expression therefore does not belong.

Polynomials are mathematical expressions that consist of variables and coefficients, where the variables are raised to non-negative integer powers and the coefficients are constants.

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Answer:

Step-by-step explanation:kk

The constant of proportionality that relates the number of milliliters of coffee made y to the number of teaspoons of sugar used x is 12.

When two variables are directly or indirectly proportional to one another, their relationship can be represented as y = kx or y = k/x, where k denotes the direction of the relationship between the two variables. It is known as the proportionality constant, or k.

We must determine the ratio of the two amounts in order to determine the constant of proportionality that connects the number of teaspoons of sugar used x to the number of millilitres of coffee brewed y.

Considering the information provided, we understand that:

168 millilitres of coffee require 14 tablespoons of sugar.

As a result, the following is the relationship between the quantity of coffee prepared and the quantity of sugar used in teaspoons:

y/x = 168/14

Reducing the ratio:

y/x = 12

This indicates that 1 teaspoon of sugar is needed to make every 12 millilitres of coffee.

As a result, 12 is the constant of proportionality that links the quantity of coffee created (y) to the quantity of sugar utilised (x).

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Answer: $165.23

Step-by-step explanation:

To solve the problem, we can use the formula for compound interest:

A = P (1 + r/n)^(nt)

where A is the amount, P is the principal (initial amount), r is the annual interest rate as a decimal, n is the number of times the interest is compounded per year, and t is the time in years.

In this case, P = $125, r = 0.19 (since the interest rate is 19%), n = 1 (since the interest is compounded annually), and t = 48/12 = 4 (since the time is given in months but we need to convert it to years). Plugging in these values, we get:

A = 125 (1 + 0.19/1)^(1*4)

A = 125 (1.19)^4

A ≈ $290.23

So, the total amount after 48 months is approximately $290.23. To find the interest earned, we subtract the principal from the amount:

Interest = Amount - Principal

Interest = $290.23 - $125

Interest = $165.23

Therefore, Min-jun will earn $165.23 in interest in 48 months.

Her sample is in fact biased, as the sampling method used was voluntary sampling, which results in self-selection bias.

Voluntary sampling is a type of sampling method in which individuals are invited to participate in a study or survey based on their willingness or availability to do so. In other words, individuals choose to participate in the study, rather than being selected randomly by the researcher.

Voluntary sampling is chosen for this problem as the students had the option to answer the e-mail or not.

A limitation of voluntary sampling is that the individuals who choose to participate in the study may not be representative of the larger population from which they were drawn, leading to biased results.

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