a circle has a diameter of 4 meters. use 3.14 for and round your final answers to the nearest hundredth. what is its perimeter? what is its area?

The contrapositive of the conditional statement is D. If the graph of two variables is not a linear function, then the two variables are not directly proportional.

"In the event that the graph of two variables fails to exhibit linearity, it can be inferred that the two variables are not directly proportional.

This contrapositive statement provides an alternative perspective on the relationship between variables and the nature of their corresponding graphs.

By examining the contrapositive, we employ an analytical approach that explores the logical implications arising from the negation of the original conditional statement. Consequently, if the graph of two variables deviates from the linear pattern, it leads us to the logical conclusion that the variables themselves are not directly proportional.

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Regardless of the row operation performed, the common eigenvalue remains the same because it represents the underlying property of the matrix and is preserved through the row operations.

What is matrix?

A matrix is a rectangular array of numbers, symbols, or expressions arranged in rows and columns.

The eigenvalues of a matrix are the values λ for which there exists a non-zero vector v such that Av = λv, where A is the matrix. In other words, the eigenvalues represent the scalars by which certain vectors are stretched or shrunk when multiplied by the matrix.

When performing row operations on a matrix, such as multiplying a row by a scalar, adding or subtracting rows, or swapping rows, the resulting matrix may have different eigenvalues than the original matrix. However, there will always be one eigenvalue that remains the same, regardless of the row operation performed. This eigenvalue is known as the common eigenvalue.

To understand why the common eigenvalue remains unchanged, we can consider the definition of eigenvalues and eigenvectors. Let's assume that λ is a common eigenvalue for a given matrix A and its transformed matrix B after performing a row operation.

If v is an eigenvector of A corresponding to the eigenvalue λ, then Av = λv. After performing the row operation, let's say the transformed vector of v is v'. Since the row operation does not affect the vector v, we have Bv' = λv'.

Since λ is a common eigenvalue for both A and B, we have Av = λv and Bv' = λv'. We can see that the row operation does not change the relationship between the matrix and the eigenvector; it only alters the representation of the eigenvector.

Therefore, regardless of the row operation performed, the common eigenvalue remains the same because it represents the underlying property of the matrix and is preserved through the row operations.

Note that the eigenvectors corresponding to the common eigenvalue may change due to row operations, but at least one eigenvector will exist for the common eigenvalue in both the original and transformed matrices.

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The warmest temperature on her hike was when she was at the elevation which had 6°C degree. The Option D.

A warm temperature refers to a moderately high temperature characterized by comparatively high temperature.

Among the temperature given, at the warmest temps on the graph which is 6 degree celcius, the elevation was at 450 meter above sea level based on the graph. Therefore, the Option D is correcr.

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The term that describes jellyfish skeletons formed by fluid-filled compartments is hydrostatic skeletons.

Hydrostatic skeletons are a type of skeletal system found in certain invertebrates, including jellyfish. These skeletons rely on the pressure of fluid within the body to provide support and maintain the body structure. In jellyfish, the fluid-filled compartments act as a hydrostatic skeleton, resisting compression and preventing the body from collapsing or deforming. This enables jellyfish to maintain their shape and move through the water with flexibility. By adjusting the internal pressure of the fluid-filled compartments, jellyfish can control their buoyancy and movement. Hydrostatic skeletons are advantageous for organisms that live in aquatic environments, allowing for efficient locomotion and adaptation to varying water conditions.

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The value of the probability P(B) is 0.67

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

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

P(B) = P(A and B)/P(A)

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

P(B) = 0.10/0.60

Evaluate the quotient

P(B) = 0.167

Hence, the value of P(B) is 0.167

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If a source of sound waves is rapidly approaching a person, the sound heard by the person appears to have a frequency higher than the original frequency.

When a source of sound waves is moving towards an observer, the sound waves become compressed or "squeezed" as the source moves closer. This compression increases the frequency of the sound waves, resulting in a higher perceived frequency or pitch. This phenomenon is known as the Doppler effect.

As the source moves closer, the waves are compressed, leading to a shorter wavelength and higher frequency.

This increase in frequency is perceived by the listener as a higher-pitched sound. Therefore, option B) "a frequency higher than the original frequency" is the correct answer in this scenario.

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Answer:

656 nm

Step-by-step explanation:

We have the energy level transition from n = 1 to n = 2 after absorbing a photon whose wavelength is 426 nm. The photon's energy must then be equal to the difference of the energy levels  

ΔE  =
[tex]-R[\frac{1}{n_{f}^{2}} - \frac{1}{n_{i} ^{2}}][/tex]
=  -13.6(-3/4)
= 10.2
So, from n = 2 to n = 3, ΔE  = 1.89
From here, we can calculate the wavelength of that photon as 1240/1.89
= 656 nm

In the late Roman Republic, individuals would typically ensure they had essential items such as a tunic or clothing appropriate for the occasion, footwear, and possibly a small writing implement like a stylus.

During the late Roman Republic period, individuals would prioritize wearing appropriate clothing, such as a tunic, which was a basic garment worn by both men and women. Footwear, such as sandals or shoes, would also be essential to protect the feet while traveling. Carrying money or valuables was crucial for transactions and personal needs, ensuring they had the means to purchase goods or services.

Additionally, individuals might carry a small writing implement, such as a stylus, for taking notes, marking important information, or engaging in correspondence. These items would have been considered essential for individuals in the late Roman Republic when leaving their homes.

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The introduction of a new battery in the computer market that requires charging only once per week would result in a shift or outward expansion of the production possibility curve.

The production possibility curve (PPC) represents the maximum combination of goods or services that an economy can produce given its resources and technology. It illustrates the trade-offs between producing different goods or services. When a new battery is introduced in the computer market that needs to be charged only once per week, it leads to an improvement in technology or an increase in productive efficiency. This technological advancement allows computer manufacturers to produce more computers or allocate fewer resources to battery charging, thus increasing their production capacity. As a result, the production possibility curve shifts outward or expands, indicating that the economy can now produce a greater quantity of computers without sacrificing the production of other goods or services. This expansion of the PPC demonstrates an increase in the economy's productive capabilities and potential for higher levels of output.

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Check the picture below.

so by using that template on that picture, let's rewrite the function some and get the period.

[tex]y=\stackrel{A}{1}\cos\stackrel{ B ~\qquad ~ C }{\left(\frac{8\pi }{5}x+\frac{5\pi }{2} \right)}+\stackrel{D}{0} \\\\[-0.35em] ~\dotfill\\\\ \stackrel{\textit{the period is}}{\cfrac{2\pi }{B}}\implies \cfrac{2\pi }{~~ \frac{ 8\pi }{ 5 } ~~}\implies \cfrac{2\pi }{1}\cdot \cfrac{5}{8\pi }\implies \cfrac{5}{4}[/tex]

The solution of expression on algebraic fractions is,

⇒ y = 47/21

We have to given that;

Expression to simplify is,

⇒ 5/y + 1/7y - 2/3y = 2

Now, WE can simplify the expression as,

⇒ 5/y + 1/7y - 2/3y = 2

⇒ (35y + y)/7y² - 2/3y = 2

⇒ 36y/7y² - 2/3y = 2

⇒ 36/7y - 2/3y = 2

⇒ (108 - 14) / 21y = 2

⇒ 94 = 21y × 2

⇒ 94 = 42y

Divide both side by 42;

⇒ y = 94 / 42

⇒ y = 47/21

Therefore, The solution of expression on algebraic fractions is,

⇒ y = 47/21

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Based on the given scenario, the most suitable recommendation for the firm would be D) Decentralize; give authority to the lower level managers regarding events in their own units.

Decentralizing decision-making in the given firm would involve granting authority to lower level managers to make decisions for their own units. This approach has several benefits. First, it empowers lower level managers and allows them to take ownership of their units, fostering a sense of responsibility and motivation.

Second, it reduces the burden on upper level managers, freeing up their time to focus on strategic planning and higher-level tasks. Third, it promotes faster decision-making at the operational level, leading to increased efficiency and responsiveness.

Fourth, it allows for better utilization of the knowledge and expertise of lower level managers who have a deeper understanding of their specific units. Decentralization can enhance overall organizational agility and adaptability to changing market conditions. So, the correct answer is D).

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--The given question is incomplete, the complete question is given below "  After extensive job cuts to reduce costs, upper level managers are spending significant amounts of time solving problems in the production units. Lower level managers are resentful that they cannot make decisions for their own units. What recommendation would you make for this firm? A) Reorganize; departmentalize around customers instead of products. B) Formalize; write explicit job descriptions, rules, and procedures so the upper managers won't have to decide each case individually. C) Centralize; create a department that does nothing but make decisions. D) Decentralize; give authority to the lower level managers regarding events in their own units."--

A straight angle is a 180-degree angle formed by two sides that create a straight line.

It represents a complete reversal of direction and plays a fundamental role in geometry and practical applications involving angles and spatial relationships.

A straight angle is an angle that measures 180 degrees.

It is formed by two sides that are opposite to each other and together form a straight line.

The concept of a straight angle can be visualized as a half turn, where you rotate or pivot around a point by 180 degrees, resulting in a complete reversal of direction.

The measurement of 180 degrees for a straight angle is derived from the fact that a complete circle is divided into 360 degrees.

Since a straight angle covers half of the circle, it occupies 180 degrees.

In geometry, a straight angle can be formed by combining two right angles.

A right angle measures 90 degrees, so when two right angles are placed next to each other, they create a straight angle with a total measurement of 180 degrees.

This relationship highlights the complementary nature of right angles within a straight angle.

Understanding the concept of a straight angle is essential in geometry and helps in analyzing and classifying various angles.

By recognizing and identifying straight angles, we can apply geometric principles and solve problems involving angles, lines, and shapes.

In real-life applications, knowledge of straight angles can be useful in areas such as engineering, architecture, and navigation.

It allows for accurate measurement and calculation of angles, ensuring precise positioning and alignment in various structures and systems.

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The court's action of taking judicial notice that it is impossible to travel from New York to Tampa without crossing a state line has the effect of establishing a fact without requiring formal proof during the trial.

Judicial notice is a legal doctrine that allows a court to accept certain facts as true without requiring formal evidence or proof. In this case, the court has taken judicial notice of the fact that it is impossible to travel from New York to Tampa without crossing a state line. By doing so, the court treats this fact as common knowledge that does not need to be proven during the trial. This means that the prosecutor does not have to provide specific evidence or arguments to establish the element of crossing state lines, as it is considered an indisputable fact in this particular case. The court's action simplifies the proceedings by accepting this fact without requiring further substantiation.

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Answer:

17:10

Step-by-step explanation:

720÷1.2=600seconds

60s=1minute

600s= 600÷60=10minutes

Answer:

-128

Step-by-step explanation:

Given, f(x)=2x

3

−21x

2

+36x−20

∴f

′

(x)=6x

2

−42x+36

When f(x) is a maximum or a minimum, f

′

(x)=0

Hence, 6x

2

−42x+36=0

x

2

−7x+6=0

x

2

−6x−x+6=0

x(x−6)−1(x−6)=0

(x−6)(x−1)=0

x=1,6

Again f

′′

(x)=12x−42

=6(2x−7)

Now, when x=1,f

′′

(x)=−30 ....[negative]

And when x=6,f

′′

(x)=30 ....[positive]

Hence, f(x) is maximum for x=1 and minimum for x=6.

The maximum and minimum values of f(x) are

f(1)=2(1)

3

−21(1)

2

+36(1)−20

=2−21+36−20=−3

f(6)=2(6)

2

−21(6)

2

+36(6)−20

=432−756+216−20=−128

Answer:

x=20

Step-by-step explanation:

We know that all 3 angles in a triangle must add up to 180°, so let's write an equation:

180=120+3x

subtract 120 from both sides

60=3x

divide both sides by 3

20=x

So, x=20

Hope this helps! :)

Al Barkley's average tax rate can be determined using the provided tax rate schedule and his taxable income of $67,000.

To calculate Al's average tax rate, we need to determine the total amount of taxes he owes and divide it by his taxable income.

Using the provided tax rate schedule, we can find the tax owed for each income bracket. However, since the specific tax rate schedule is not provided, I will provide an example based on the 2021 tax rate schedule for single individuals in the United States.

Lets assume the tax rates are as follows:

10% on the first $9,950 of taxable income

12% on the income between $9,951 and $40,525

22% on the income between $40,526 and $86,375

24% on the income between $86,376 and $164,925

... and so on

To calculate the total tax owed, we determine the tax for each income bracket and sum them up. For example, if Al's taxable income is $67,000, we calculate the tax as follows:

Tax on the first $9,950 (10%): $9,950 * 0.10 = $995

Tax on the income between $9,951 and $40,525 (12%): ($40,525 - $9,951) * 0.12 = $3,741.48

Tax on the income between $40,526 and $67,000 (assumed rate): ($67,000 - $40,526) * tax rate = $X (unknown)

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Answer:

-------------------

The volume of a pyramid is 1/3 of the product of the base area and height.

Find the area of the base:

The base is the square, so each side is the square root of the base area:

The perimeter of the base is:

Answer: 48 inches

Step-by-step explanation:

480*3=1440

1440/10=144

each side: 12

12*4=48 inches

The weight of an offensive linesman being a distribution based on a continuous range of values makes it a continuous random variable. A.

The weight of an offensive linesman can take any value between 200 and 350 pounds.

Since weight can have an infinite number of possible values within this range, it is considered a continuous random variable.

A discrete random variable, on the other hand, would be one where the possible values are countable and finite, such as the number of touchdowns scored in a game.

A qualitative variable refers to a non-numerical characteristic or attribute, such as the color of a player's jersey or their position on the team.

Weight, in this case, is a numerical measurement and not a qualitative variable.

An offensive lineman's weight can range anywhere between 200 and 350 pounds.

Weight is regarded as a continuous random variable since it has an endless number of potential values within this range.

On the other hand, a discrete random variable would be one whose potential values are countable and finite, like the total number of touchdowns scored in a match.

A qualitative variable is a non-numerical trait or quality, such as a player's position on the squad or the colour of their shirt.

Weight is not a qualitative characteristic in this context; it is a numerical measurement.

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Journalists can exhibit selection biases in favor of news stories they view as having a great deal of dramatic or entertainment value. The correct answer is option a.

This bias can lead to the prioritization of stories that are sensational or attention-grabbing, potentially overshadowing other important news that may not have the same level of entertainment value. However, it is important to note that journalists' biases can vary and not all journalists exhibit the same biases.

The media landscape consists of a diverse range of perspectives and approaches. It is the responsibility of journalists to strive for objectivity, balance, and fairness in their reporting, avoiding undue influence from personal biases and ensuring the accurate and comprehensive coverage of news events. Option A.

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Option C. Between 1982 and 2012, there were fewer House members who fell between the most liberal Republican and the most conservative Democrat. represents a trend supported by the data in the bar graph

What is bar graph?

A bar graph, also known as a bar chart, is a graphical representation of categorical data using rectangular bars. It is used to compare and display the values of different categories or groups.

In a bar graph, each category or group is represented by a separate bar. The length or height of each bar corresponds to the value or frequency of the category it represents. The bars are typically drawn vertically or horizontally, with the length or height proportional to the data being represented.

The horizontal axis of a bar graph represents the categories or groups, while the vertical axis represents the values or frequencies. Labels or values are often placed along the axes to provide additional information.

Bar graphs are commonly used to visualize and compare data in various fields, including statistics, economics, market research, and social sciences. They provide a clear visual representation of data, making it easy to interpret and understand comparisons between different categories or groups.

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In this experiment, the dependent variable would be the amount of fruit production by tomato plants.

The dependent variable is the variable that is measured or observed in an experiment. It is the outcome or response that is influenced by the independent variable, which is the variable that is manipulated or controlled by the researcher. In this case, the independent variable would be the brand of fertilizer.

By testing different brands of fertilizer and measuring the resulting fruit production, the researcher can determine the impact of each brand on the tomato plants' yield. The dependent variable, which is the amount of fruit production, will vary based on the different levels or variations of the independent variable (i.e., different brands of fertilizer).

By analyzing the data collected on fruit production for each brand of fertilizer, the researcher can identify which brand yields the greatest amount of fruit. This information can be used to make informed decisions on the most effective fertilizer brand for maximizing tomato plant productivity.

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Step-by-step explanation:

Four tosses of the coin result in 2^4 = 16 possible outcomes of which FOUR

will have ONE tails :

HHHT

HHTH
HTHH
THHH      so 4 out of 16  = 4/16 = 1/4    Not very unusual

The volume of the oblique pyramid is approximately 58.33 cubic centimeters.

To find the volume of the oblique pyramid with a square base and an edge length of 5 cm, and a height of 7 cm, you can follow these steps:

1. Determine the area of the square base:
  A = side x side = 5 cm x 5 cm = 25 square centimeters.

2. Apply the formula for the volume of a pyramid:
  Volume = (1/3) x Base area x Height = (1/3) x 25 square centimeters x 7 centimeters.

3. Calculate the volume:
  Volume = (1/3) x 25 x 7 = 58.33 cubic centimeters (rounded to two decimal places).

So, the volume of the oblique pyramid is approximately 58.33 cubic centimeters.

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The volume of the oblique pyramid with a square base of edge length 5 cm and height 7 cm is 58.33 cubic centimeters.

The base of the pyramid is a square with an edge length of 5 cm, so its area is 5cm x 5cm = 25cm2. We multiply this by the height of the pyramid, which is 7 cm, and then divide by 3:

Volume = (25cm2 x 7cm) / 3 = 175cm3 / 3 = 58.333cm3

Therefore, the volume of the oblique pyramid is approximately 58.333 cubic centimeters.

To find the volume of the pyramid, we'll use the formula for volume of a pyramid which is 1/3 * base area * height. For an oblique pyramid with a square base and an edge length of 5 cm, the base area is side length squared, which is 5 * 5 = 25 sq cm. The pyramid's height is given as 7 cm. The volume then becomes 1/3 * (25 sq cm) * (7 cm), which equals 58.33 cubic centimeters.

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λ equals 15 when AC has a magnitude of 17.

λ is approximately -3.909 when ABC is a straight line.

λ equals 12 when ABC is a right angle.

We have,

A.

To find the value of λ in each case, we'll need to perform vector calculations based on the given information.

Find λ when AC = 17:

The position vector AC can be found by subtracting vector A from vector C:

AC = (6i + λj) - (-9i + 7j) = (6 + 9)i + (λ - 7)j = 15i + (λ - 7)j

To find the magnitude of vector AC, we can use the formula:

|AC| = √((15)² + (λ - 7)²) = 17

Squaring both sides and simplifying the equation, we get:

225 + (λ - 7)² = 289

Expanding and rearranging the equation, we have:

(λ - 7)² = 289 - 225

(λ - 7)² = 64

B.

Taking the square root of both sides (ignoring the negative root, as we are dealing with distance), we find:

λ - 7 = 8

λ = 8 + 7

λ = 15

Find λ when ABC is a straight line:

For ABC to be a straight line, the vectors AB and BC must be collinear, which means their direction ratios must be proportional.

The direction ratio of vector AB is:

(2 - (-9)) / (-1 - 7) = 11 / (-8) = -11/8

The direction ratio of vector BC is:

(6 - 2) / (λ - (-1)) = 4 / (λ + 1)

For AB and BC to be collinear, their direction ratios must be proportional. Therefore, we can set up the following equation:

-11/8 = 4 / (λ + 1)

Cross-multiplying and solving for λ, we have:

-11(λ + 1) = 32

Expanding and rearranging the equation, we get:

-11λ - 11 = 32

-11λ = 32 + 11

-11λ = 43

λ = 43 / (-11)

λ = -3.909

C.

Find λ when ABC is a right angle:

For ABC to be a right angle, the dot product of vectors AB and BC must be zero.

The dot product of AB and BC is:

(2i - j) · (6i + λj) = (2)(6) + (-1)(λ) = 12 - λ

Setting the dot product equal to zero, we have:

12 - λ = 0

λ = 12

Therefore,

λ equals 15 when AC has a magnitude of 17.

λ is approximately -3.909 when ABC is a straight line.

λ equals 12 when ABC is a right angle.

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An open circuit interrupts current, and because the other circuit components do not have current, they cannot drop any voltage is False

An open circuit refers to a circuit where there is a break or interruption in the path that allows current to flow. In such a circuit, the flow of electrons is impeded, preventing the current from passing through. When an open circuit occurs, current cannot flow through the components connected in the circuit.

Now, let's address the second part of the statement: "...because the other circuit components do not have current, they cannot drop any voltage." This part is false. Even though an open circuit interrupts the current flow, the other circuit components still have voltage across them, and they can indeed drop voltage.

To understand this, let's consider Ohm's Law, which states that the voltage across a component is equal to the current flowing through it multiplied by its resistance. When current flows through a component, it encounters resistance, and as a result, a voltage drop occurs across that component. This voltage drop is a manifestation of the energy being consumed by the component.

In an open circuit, where there is no current flow due to the interruption, the components still have voltage across them. This voltage is determined by the potential difference provided by the power source connected to the circuit. However, since there is no current flowing, the components do not consume any energy and do not exhibit any voltage drop.

To illustrate this further, let's consider a simple circuit with a battery (power source), a resistor, and an open switch. When the switch is closed, completing the circuit, current flows through the resistor, and a voltage drop occurs across it. However, when the switch is open, the circuit becomes an open circuit. The voltage across the resistor is still present, but since there is no current flowing through it, there is no voltage drop across the resistor.

In summary, an open circuit does interrupt current flow, but the other components in the circuit can still have voltage across them. However, without current flowing, these components do not exhibit any voltage drop because voltage drop occurs as a result of current flowing through a component and encountering resistance.

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To factor quadratics with leading coefficients other than 1, you can follow these steps:

Check your factoring by expanding the factored form to see if it simplifies back to the original quadratic equation.

Remember that factoring quadratics with leading coefficients other than 1 may involve more complex algebraic techniques, and in some cases, the quadratic equation may not factor easily. In such cases, you can resort to using the quadratic formula to find the roots of the equation.

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Answer: 38.8 grams

Step-by-step explanation:

0.51*76=38.76

=38.8

Answer: 38.76 grams

Step-by-step explanation:

Well, we already know the easiest way to do this, is first figure out 50 percent, because 51 percent is so close to it. To do this, divide the original number in half (76 divided by 2), which is 38. Then we have to find one percent of 76, which means we have to move the decimal over twice, giving us .76 = 1%. Then add that and 50 percent to get 51% which is 38.75 grams.

Hope this helps :D

The police can approximately stop 1990 cars if they targeted those going more than 75 mph.

To determine the number of cars that the police would stop if they were targeting those going more than 75 mph, we need to consider the normal distribution and the z-score.

Given that the mean speed is 62 mph and the standard deviation is 5 mph, we can calculate the z-score for a speed of 75 mph using the formula: z = (x - μ) / σ, where x is the given value, μ is the mean, and σ is the standard deviation. Plugging in the values, we get: z = (75 - 62) / 5 = 2.6.

To find the proportion of cars going more than 75 mph, we can consult the z-table or use statistical software. Looking up the z-score of 2.6 in the table, we find that the proportion is approximately 0.995.

Since we know there are 2000 cars on the highway, we can multiply the proportion by the total number to estimate the number of cars that would be stopped: 0.995 * 2000 = 1990.

Therefore, the police would be expected to stop approximately 1990 cars if they targeted those going more than 75 mph.

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