Find the value of x.

One possible technique to address heteroscedasticity with group-specific variances is the use of weighted least squares (WLS) estimation, where observations from each group are assigned weights that are inversely proportional to the variance of the error term in that group.

Heteroscedasticity refers to the situation where the variance of the error term in a regression model is not constant across different levels of the independent variable(s). This violates the assumption of homoscedasticity, which can lead to biased and inefficient estimates of the model parameters.

When the heteroscedasticity is related to group-specific variances, a possible solution is to use WLS estimation. This involves calculating weights for each observation based on the inverse of the estimated variance of the error term in its group. By doing so, observations with larger variances are given smaller weights, while observations with smaller variances are given larger weights, which effectively downweighs the influence of more variable observations.

The resulting WLS estimator is more efficient and less biased than the standard OLS estimator, and it can lead to more accurate inferences about the relationship between the independent and dependent variables. However, WLS requires the researcher to specify the appropriate weights for each observation, which can be challenging and subjective in practice.

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There are 107 multiples of 2 between 176 and 389.

The first multiple of 2 within the range is the smallest multiple of 2 that is greater than or equal to the lower endpoint, which is 176. To find this, we divide 176 by 2:

176 ÷ 2 = 88

So the first multiple of 2 within the range is 88.

The last multiple of 2 within the range is the largest multiple of 2 that is less than or equal to the upper endpoint, which is 389. To find this, we divide 389 by 2:

389 ÷ 2 = 194.5

Since we are only interested in whole numbers, we round 194.5 down to the nearest integer, which is 194.

So the last multiple of 2 within the range is 194.

Now that we know the first and last multiples of 2 within the range, we can count how many multiples of 2 exist between them. To do this, we subtract the first multiple from the last multiple and add 1:

194 - 88 + 1 = 107

Therefore, there are 107 multiples of 2 between 176 and 389.

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1. There are 4194304 ways to choose the two pizzas

2. Ways to make one pizza with up to five topping is 1023

3. There is only one way to build the two pizzas.

4. Combinations = 523,503

5. The total number of ways to make two pizzas are 523,504

6. The same value that the boy claims in the advertisement.

A subfield of statistics known as probability studies random events and their likelihood of happening.

1. There are 11 toppings and each topping can be either included or excluded from a pizza, there are 2 choices for each topping. Therefore, there are 2^11 = 2048 ways to make one pizza. For two pizzas, there are 2048*2048 = 4194304 ways to choose the two pizzas.

2. For one pizza with up to five toppings, we can use combinations to determine the number of ways to choose toppings. Since we have 11 toppings to choose from and can choose up to 5, the number of ways to choose is:

C(11, 1) + C(11, 2) + C(11, 3) + C(11, 4) + C(11, 5) = 11 + 55 + 165 + 330 + 462 = 1023

3. If the two pizzas are identical, there is only one way to build the two pizzas.

4. If the two pizzas are different, we need to choose 2 of the 1023 possibilities from problem 2. Since order doesn't matter, we use combinations, and the number of ways to choose is:

C(1023, 2) = 523,503

5. The total number of ways to make two pizzas with up to five toppings each is the sum of the answers from problems 3 and 4:

1 + 523,503 = 523,504

6. The number 10242 is equal to 1,048,576. This is the same value that the boy claims in the advertisement. Therefore, the boy's claim is valid only if the pizzas can have up to 11 toppings each, not up to 5 as advertised.

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The measure of ∠1 is 117° before that we have to find out the angle of x, the values are in degrees.

An angle is the geometric measure of the space between two intersecting lines or planes, usually expressed in degrees, radians, or other units of measurement.

Since the sum of the measures of angles in a triangle is 180°,

m∠1 + m∠2 + m∠3 = 180°

putting the given values:

(7x - 21)° + (-5x + 75)° + m∠3 = 180°

Simplifying the above equation,

2x + 54° + m∠3 = 180°

Subtracting 54° from both sides, we get:

2x + m∠3 = 126°

We know that ∠3 is a right angle, which means its measure is 90°. Substituting this value, we get:

2x + 90° = 126°

Subtracting 90° from both sides, we get:

2x = 36°

Dividing both sides by 2, we get:

x = 18°

Now that we know the value of x, we can substitute it into the expression for m∠1:

m∠1 = (7x - 21)° = (7 x 18 - 21)° = 117°

Therefore, the measure of ∠1 is 117°.

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The measure of angle 1, we need to use the given equation that relates angle 1 to variable x. The equation is

[tex] m ∠ 1 = ( 7 x − 21 ) °[/tex].

the measure of angle 1 is 35 degrees.

This means that the measure of angle 1 is equal to 7 times the value of x minus 21 degrees.
However, we are not given the value of x directly. Instead, we are given the measure of angle 2 in terms of x. The equation for angle 2 is

[tex] m ∠ 2 = ( − 5 x + 75 ) °[/tex].

This means that the measure of angle 2 is equal to negative 5 times the value of x plus 75 degrees.
We can set these two equations equal to each other because angle 1 and angle 2 are vertical angles and therefore congruent. This gives us the equation:
[tex]7x - 21 = -5x + 75[/tex]
We can simplify this equation by adding 5x to both sides:
[tex]12x - 21 = 75[/tex]
Then, we add 21 to both sides:
[tex]12x = 96[/tex]
Finally, we divide both sides by 12:
[tex]x = 8[/tex]
Now that we have found the value of x, we can plug it into the equation for angle 1 to find its measure:
[tex]m ∠ 1 = (7 * 8) - 21[/tex]
[tex]m ∠ 1 = 56 - 21[/tex]
[tex]m ∠ 1 = 35 degrees[/tex]

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Answer: 14x + 14

Step-by-step explanation: To find the perimeter of the room without the door, we need to add up the four sides. Using the simplified expression for the perimeter, which is 2(4x+1) + 2(3x+6), we can simplify further by distributing the 2:

2(4x+1) + 2(3x+6) = 8x + 2 + 6x + 12

Combining like terms, we get:

14x + 14

Therefore, the perimeter of the room without the door in simplest form is 14x+14.

Answer:  graphing 0,2 would place the 0 on the x-axis and 2 on the y-axis, whereas graphing 2,0 would place the 2 on the x-axis and 0 on the y-axis

Step-by-step explanation:

Answer:

Step-by-step explanation:

Graphing the point (0, 2) means plotting a point at the coordinates where the x-axis is located at 0 and the y-axis is located at 2. This means that the point would be located at the upper part of the y-axis.

On the other hand, graphing the point (2, 0) means plotting a point where the x-axis is located at 2 and the y-axis is located at 0. This means that the point would be located on the x-axis to the right of the origin.

In general, the order of the coordinates in an (x, y) pair represents the horizontal and vertical position of the point, respectively. Thus switching the order of the coordinates changes the position of the point on the coordinate plane.

The height of the second cylinder is 7 inches.

The Dreamy Donut Shop is 3 miles away from Cara's starting point.

For the first question, we can use the fact that the ratio of the diameter to the height is the same for both cylinders. The first cylinder has a diameter of 6 inches and a height of 14 inches, so its ratio is 6/14. If the second cylinder has the same ratio, then we can set up the equation

3/x = 6/14,

where x is the height of the second cylinder. Solving for x, we get

x = 7 inches.

Therefore, the height of the second cylinder is 7 inches.

For the second question, we can use the formula distance = rate × time. Since Cara drives at the same rate to both work and the donut shop, we can set up the equation

r × 0.5 = 15 for her commute to work, where r is her rate (in miles per minute). Solving for r, we get r = 30 miles per hour. Using the same formula for her trip to the donut shop, we get

r × 0.1 = d,

where d is the distance to the donut shop (in miles). Solving for d, we get

d = 3 miles.

Therefore, the Dreamy Donut Shop is 3 miles away from Cara's starting point.

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Answer:

Step-by-step explanation:

820-380=440

440:44=10

10!

Answer:

10 months

Step-by-step explanation:

820-380=440then divuse the cost 44 so 440/44 to get 10 months

The rate at which water is being poured into the conical paper cup when the water level is 4 cm is 707.1067 cm3 / 353.5534 seconds = 2 cm/sec.

The rate at which water is being poured into the conical paper cup with a height of 30 cm and a radius of 10 cm when the water level is 4 cm is determined by the volume of water that must be added to the cup in order to raise the water level from 0 cm to 4 cm. The volume of a cone is

V = (1/3)πr2h.

Therefore, the volume of water added to the cone when the water level is 4 cm is

V = (1/3)π × 102 × (30 - 4) = 707.1067 cm3.

Since the water level is rising at a rate of 2 cm/sec, it will take 707.1067 cm3 / 2 cm/sec = 353.5534 seconds to add the necessary water to the cup to raise the water level to 4 cm.

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The range of the function is a set of positive values greater than 500 and 60.

Therefore, the range of the function is given by:

Range = {c(t) : c(t) > 500, c(t) > 60t} or {c(t) : c(t) > 500, c(t) > 60}.

The given situation of a cell phone company charges $500 for a new phone and then $60 each month after the purchase.

If c (t) is a rational function that represents the average monthly cost of owning the cell phone, the range of the function is given by:

Range = {c(t) : c(t) > 500, c(t) > 60t} or {c(t) : c(t) > 500, c(t) > 60}

The cell phone company charges a one-time amount of $500 and $60 each month after the purchase.

It is given that c (t) represents the average monthly cost of owning the cell phone.

From this information, it can be inferred that the average monthly cost of owning the cell phone is given by: c(t) = (500 + 60t)/t

The given function is a rational function that represents the average monthly cost of owning the cell phone.

The range of a function is the set of all possible values of the function.

The average monthly cost of owning the cell phone is a positive value.

Hence the range of the function is a set of positive values greater than 500 and 60.

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This means that the algorithm will end after just one step, and the GCD will be equal to the last non-zero remainder, which in this case is 3. Therefore, we can be certain that the Euclidean algorithm will end with a zero remainder in one step, and the lowest number we can be certain of is 3.

In this particular question, the student is asking how many steps are required for the Euclidean algorithm to end with a zero remainder when applying it to two positive integers a and b.Suppose you apply the Euclidean algorithm to two positive integers a, b. You only know that a is a number with 1000 decimal digits. The value of b, on the other hand, is given as 3. We can be certain that the Euclidean algorithm will end with a zero remainder in one step.

In order to understand why this is the case, it is important to know that the Euclidean algorithm is a method for computing the greatest common divisor (GCD) of two positive integers. It is based on the observation that the GCD of two numbers does not change if the smaller number is subtracted from the larger number repeatedly.The Euclidean algorithm begins by dividing the larger number by the smaller number and taking the remainder.

The larger number is then replaced with the smaller number, and the smaller number is replaced with the remainder. This process is repeated until the remainder is zero. At this point, the algorithm ends, and the GCD is equal to the last non-zero remainder that was computed.In the case of the student's question, we know that b=3. Since 3 is relatively prime to any number, including a number with 1000 decimal digits, the remainder of the first step will always be 0.

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If we randomly select 62 travel mugs and measure the amount of soft drink dispensed in each mug, the sample mean will be within 0.5 ounces of the population mean with 95% confidence.

To determine the number of travel mugs required for the study, we need to use the formula for sample size determination for means. The formula is:

n = (Z^2 * σ^2) / E^2

Where:

n = sample size

Z = Z-score for the desired confidence level (e.g., 1.96 for 95% confidence level)

σ = standard deviation of the population

E = desired margin of error (i.e., the maximum difference between the sample mean and the population mean)

In this case, we are given that the standard deviation of the soft drink dispensed is 2.0 ounces and we want the sample mean to be within 0.5 ounces of the population mean. Let's assume a 95% confidence level, which corresponds to a Z-score of 1.96. Plugging in the values, we get:

n = (1.96^2 * 2^2) / 0.5^2 = 61.6

We need to round up to the nearest whole number, so the final sample size should be 62 travel mugs. The larger the sample size, the smaller the margin of error will be, but it also means more time and resources required for the study.

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Complete question is:

a baseball parkamount of soft drink dispensed is normally distributed with standard deviation 2.0 ounces. how many travel mugs should be included in a study if it is desiredthat the sample mean soft drink dispensed be within 0.5 ounces of the population mean with 95% confidence.

Answer:

The balanced equation that represents an endothermic reaction is:

2 CH4 (g) + 2 O2 (g) → 2 CO2 (g) + 2 H2O (g)

This is because the reactants (CH4 and O2) have a higher bond energy than the products (CO2 and H2O), meaning that energy must be absorbed in order to break the bonds and form the products. As a result, the reaction is endothermic.

Jabu's Monthly salary is of R27500.00, with an increase of R1 746.25 per month. Jabu's monthly increase is R1 746.25. The correct answer is option 3.

To find Jabu's previous monthly salary, we can use the formula:

Previous monthly salary = (Annual salary / 12)

Since Jabu's new annual salary is R330 000, his previous annual salary would be:

Previous annual salary = (New annual salary / 1.0635) = (R330 000 / 1.0635) = R310 020.10

Therefore, Jabu's previous monthly salary would be:

Previous monthly salary = (Previous annual salary / 12) = (R310 020.10 / 12) = R25 835.01

To find the monthly increase, we can subtract Jabu's previous monthly salary from his new monthly salary:

Monthly increase = (New monthly salary - Previous monthly salary) = (R27 618.38 - R25 835.01) = R1 783.37

Therefore, Jabu's monthly increase is R1 746.25 (rounded to the nearest cent).

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Answer:

72 ft

Step-by-step explanation:

Alright so two ways you can solve this, but the easier one (imo) is to find the scale factor by doing 24/2 since its an enlargement, and multiplying 6 by the scale factor (12)

Step-by-step explanation:

If your age is ' a ' then your max heart rate = 220 - a

Let x be the number of $1 bills and y be the number of $5 bills that Hermione had in her purse. Then we can write two equations based on the given information:

x + y = 12 (because Hermione had 12 bills in total)

x + 5y = 40 (because the total value of the bills was $40)

We can solve this system of equations by first solving the first equation for x:

x = 12 - y

Substituting this expression for x into the second equation, we get:

(12 - y) + 5y = 40

Simplifying and solving for y, we get:

4y = 28

y = 7

Therefore, Hermione had 7 $5 bills in her purse. Answer: 7.

The statement is true.

The coefficient of correlation, also known as the Pearson correlation coefficient, is a measure of the strength and direction of the linear relationship between two variables. It ranges from -1 to 1, with a value of -1 indicating a perfect negative correlation, a value of 0 indicating no correlation, and a value of 1 indicating a perfect positive correlation.

The coefficient of correlation is useful in many applications, including research, business, and finance. It allows us to quantify how closely related two variables are, which is important when analyzing data and making predictions.

For example, in finance, the correlation coefficient can be used to measure the degree of correlation between the returns of two assets, which is important when building diversified portfolios. It is important to note, however, that the coefficient of correlation only measures the strength and direction of the linear relationship between two variables.

It does not indicate causation, nor does it capture any non-linear relationships that may exist between the variables. Therefore, it should be used in conjunction with other analytical tools to fully understand the nature of the relationship between the variables.

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Answer:

yes

Step-by-step explanation:

replace r and q with y and x:

y = 4x - 5

It is a line.

As per the fundamental counting principle, the total number of possible outcomes is 24.

To use the fundamental counting principle, we need to first identify the number of choices available for each option. In this case, we have 3 types of shoes, 4 colors, and 2 width options. So, the number of choices for each option is:

3 types of shoes

4 colors

2 width options

To determine the total number of possible outcomes, we multiply the number of choices for each option. This gives us:

Total number of possible outcomes = number of choices for type of shoe x number of choices for color x number of choices for width

= 3 x 4 x 2

= 24

Therefore, there are 24 possible shoe combinations that can be created from the given options.

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The probability of getting a sum of at least 3 when two different colored dice are rolled simultaneously is 5/6.

To calculate the probability of getting a sum of at least 3 when two different colored dice are rolled simultaneously, we need to list out all possible combinations of the dice and find out how many of them add up to at least 3. Let's begin:

Possible combinations when rolling two dice:

1 + 1, 1 + 2, 1 + 3, 1 + 4, 1 + 5, 1 + 62 + 1, 2 + 2, 2 + 3, 2 + 4, 2 + 5, 2 + 63 + 1, 3 + 2, 3 + 3, 3 + 4, 3 + 54 + 1, 4 + 2, 4 + 3, 4 + 55 + 1, 5 + 2, 5 + 36 + 1, 6 + 2, 6 + 3

Total number of combinations:

6 x 6 = 36.

Now, we need to find out how many of these combinations add up to at least 3.

We can ignore 1+1 because it's less than 3. The rest are as follows:

1 + 2, 2 + 1, 1 + 3, 3 + 1, 2 + 2, 1 + 4, 4 + 1, 2 + 3, 3 + 2, 1 + 5, 5 + 1, 2 + 4, 4 + 2, 3 + 3, 1 + 6, 6 + 1, 2 + 5, 5 + 2, 3 + 4, 4 + 3, 2 + 6, 6 + 2, 3 + 5, 5 + 3, 4 + 4, 3 + 6, 6 + 3, 4 + 5, 5 + 4, 4 + 6, 6 + 4, 5 + 5, 5 + 6, 6 + 5, 6 + 6.

Total: 30.

So, the probability of getting a sum of at least 3 when two different colored dice are rolled simultaneously is 30/36 or 5/6.

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Answer:

To determine if Daniel should have filled out his W-4 form differently to receive a refund, we need to compare his tax liability with the total amount withheld from his paychecks for the year.

If Daniel's tax liability for the year is less than $3,900, he will receive a refund when he files his taxes. If his tax liability is more than $3,900, he will owe additional taxes when he files his taxes.

If Daniel's tax liability is exactly $3,900, he will neither owe additional taxes nor receive a refund when he files his taxes.

Therefore, to determine if Daniel should have filled out his W-4 form differently, we need to compare his tax liability with $3,900.

If Daniel's tax liability from part B, question 3, is less than $3,900, he will receive a refund when he files his taxes, as the total amount withheld from his paychecks is more than his tax liability. In this case, Daniel may want to consider filling out his W-4 form differently to reduce the amount withheld from his paychecks and increase his take-home pay.

On the other hand, if Daniel's tax liability from part B, question 3, is more than $3,900, he will owe additional taxes when he files his taxes, as the total amount withheld from his paychecks is less than his tax liability. In this case, Daniel may want to consider filling out his W-4 form differently to increase the amount withheld from his paychecks and reduce the amount he will owe when he files his taxes.

If Daniel's tax liability from part B, question 3, is exactly $3,900, he will neither owe additional taxes nor receive a refund when he files his taxes, and his W-4 form is correctly filled out for his tax situation.

In summary, whether or not Daniel should have filled out his W-4 form differently to receive a refund depends on his tax liability compared to the total amount withheld from his paychecks. If his tax liability is less than the total amount withheld, he may want to reduce the amount withheld to increase his take-home pay. If his tax liability is more than the total amount withheld, he may want to increase the amount withheld to reduce the amount he will owe when he files his taxes. If his tax liability is exactly equal to the total amount withheld, his W-4 form is correctly filled out for his tax situation.

The probability that a patient will relapse after receiving desipramine depends on a variety of factors, such as dosage, duration of treatment, and pre-existing mental health conditions.

Generally speaking, it is estimated that around 50-70% of people who take desipramine as an antidepressant will experience relapse within six months of treatment cessation.

However, this rate can be decreased through longer treatment periods and/or higher doses of medication.

Additionally, patients may also benefit from lifestyle changes, such as increased physical activity, increased social engagement, and improved dietary habits.

Taking all of these factors into consideration, it is difficult to determine the exact probability of relapse in any given case.

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7.11 [tex]cm^{2}[/tex] is the area of the darkened area, or 57 - (5/12). (rounded to two decimal places)

A circle in geometry is a closed object made up of all points in a plane that are equally spaced out from a specific point known as the centre. The diameter of a circle is the distance through its centre; the radius is the distance from any point on the circle to that point. Any three locations that are located on a circle can be used to describe it, in addition to its centre point and radius. A circle's circumference, also known as its perimeter, can be calculated using the formula C = 2r, where r denotes the radius and is a mathematical constant roughly equivalent to 3.14. The equation A = r2 determines the area of a circle.

given

We must deduct the area of triangle OAB (the sector) from the area of trapezium ABCD in order to determine the area of the shaded zone formed by points ABDC inside circle sector OAB.

Finding the sector's area is the first step. The sector's central angle is 75 degrees, or (75/360) of the complete circle. Hence, this is the sector's geographic scope:

(75/360)r2, where r is the circle's radius.

Inputting r=4cm results in:

(75/360)π(4)² = (5/12)π cm²

The area of the trapezium must then be located. Finding the height of the trapezium, which is the separation between lines AB and CD, is necessary to do this.

Using the Pythagorean Theorem, the following can be discovered:

h² = (OA)² - (CA) (CA) ²

h² = 4² - 3²

h = √7 cm

The trapezoid's surface area is:

(1/2)(AB+CD)

h = (1/2)(6+4)

(√7) = 5√7 cm²

Lastly, we can calculate the area of the darkened area by deducting the sector's area from the trapezoid's area:

7.11 [tex]cm^{2}[/tex] is the area of the darkened area, or 57 - (5/12). (rounded to two decimal places) .

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The solution of the system of equations:

2x+2y+ 6z = 8

5x+6y + 5z = 3

5x + 6y + 3z = 5

Is the one in option a.

(x= 34, y = -27,z = -1)

Here we have the system of equations:

2x+2y+ 6z = 8

5x+6y + 5z = 3

5x + 6y + 3z = 5

If we subtract the third equation from the second one we will get:

(5x + 6y + 5z) - (5x + 6y + 3z) = 3 - 5

5z - 3z = -2

We just removed two of the variables, so we can now solve this linear equation for z so we get:

2z = -2

z = -2/2

z = -1

We know that the value of z is -1, that is enough to identify the correct option because only one of these has z = -1  which is the first one, so that is the correct option.

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To make a table of the two possible payouts on each policy with the probability of each, we can use the following information:

The premium is $280.

The probability of a fire is 0.1% or 0.001.

In the event of a fire, the insured damages will be $270,000.

There are two possible outcomes:

No fire occurs:

The probability of this outcome is 1 - 0.001 = 0.999.

The payout is $0.

Fire occurs:

The probability of this outcome is 0.001.

The payout is $270,000.

Therefore, the table of the two possible payouts on each policy with the probability of each is:

Outcome Probability Payout

No fire           0.999            $0

Fire                   0.001       $270,000

Note that the expected value of the policy can be calculated as the sum of the products of the probabilities and payouts:

Expected value = (0.999 x $0) + (0.001 x $270,000) = $270.

To increase £88 by 14%, we can use the multiplication method, which involves multiplying the original amount by the decimal equivalent of the percentage increase.

The multiplication method is a mathematical technique used to solve problems involving multiplication. It involves breaking down numbers into their constituent parts and then multiplying those parts together to arrive at the final answer.

To find the decimal equivalent of 14%, we divide the percentage by 100:

14% ÷ 100 = 0.14

This tells us that a 14% increase is equivalent to multiplying the original amount by 1.14 (1 + 0.14).

To increase £88 by 14%, we can multiply it by 1.14:

£88 x 1.14 = £100.32

Therefore, the increased amount is £100.32.

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Answer: I think It is 63.64%. If I'm wrong I'm sorry.

Step-by-step explanation:

Ask yourself what is 56% out of 88%. I did it in my head, but I got 63.6363636% then I rounded it to 63.64%.

From the given information provided, the area of the new hexagon when dilated by scale factor is 675 square inches.

When a polygon is dilated by a scale factor of k, its area is multiplied by k².

A hexagon is a six-sided polygon. It is a flat shape with straight sides, and all six of its angles add up to 720 degrees.

In this case, the hexagon is being dilated by a scale factor of 3, so the area of the new hexagon will be:

Area of new hexagon = (scale factor)² x Area of original hexagon

Area of new hexagon = 3² x 75

Area of new hexagon = 9 x 75

Area of new hexagon = 675 square inches

Therefore, the area of the new hexagon is 675 square inches.

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