A fair die will be rolled 12
times. What is the probability that 1
, 2
, or 3
is rolled at most 9
times? Round your answer to four decimal places

To solve for x, we can combine like terms on the left side of the equation:

0.35x + 0.40x + 0.05x + 1.2 = 7.12

0.8x + 1.2 = 7.12

Subtracting 1.2 from both sides:

0.8x = 5.92

Dividing both sides by 0.8, we get:

x = 7.4

Therefore, the value of x is actually 7.4

Required error is the perimeter of the triangle is 60 cm, not 66 cm as Alfonso said.

What is perimeter of a triangle?

The perimeter of a triangle is the total length of the three sides of the triangle. It is a fundamental geometric concept that is important in many applications, including architecture, engineering, and construction.

To calculate the perimeter of a triangle, you simply add up the lengths of its three sides. This is expressed by the following formula,

Perimeter = side a + side b + side c

where "a," "b," and "c" are the lengths of the three sides of the triangle.

Here Alfonso's error is that he added the three side lengths incorrectly. The correct way to find the perimeter of a triangle is to add up all three sides.

In this case, the three side lengths are 22 cm, 11 cm, and 27 cm. Adding them up, we get,

22 cm + 11 cm + 27 cm = 60 cm

Therefore, the perimeter of the triangle is 60 cm, not 66 cm as Alfonso said.

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Correct question is " There is a triangle whose sides are 22 cm, 11 cm and 27 cm.

Alfonso said that the perimeter of this

triangle is 66 centimeters. What was his error?"

The value of the expression, -0.4·(3·x - 2) + (2·x + 4)/3 when x = 4 is 0

-0.4 × (3 × 4 - 2) + (2 × 4 + 4)/3 = 0

A mathematical expression comprises, variables, and or numbers, which could include indices, joined together by mathematical operators.

The value of the expression -0.4·(3·x - 2) + (2·x + 4)/3 for x = 4 can be found by plugging in x = 4 into the expression as follows;

Where; x = 4

-0.4·(3·x - 2) + (2·x + 4)/3 =  -0.4 × (3 × 4 - 2) + (2 × 4 + 4)/3

-0.4 × (3 × 4 - 2) + (2 × 4 + 4)/3 = -0.4 × (12 - 2) + (8 + 4)/3

-0.4 × (12 - 2) + (8 + 4)/3 = -0.4 × 10 + 12/3 = -4 + 4 = 0

Therefore;

The value of the expression, -0.4·(3·x - 2) + (2·x + 4)/3 for x = 4 is zero

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90  is the average score of these top students.

What is the average in mathematics?

Mean is defined as the average equal to the ratio of the total number of values ​​in a particular set to the total number of values ​​in the set.

                               The average in mathematics is the average of a data set obtained by adding all the numbers and dividing the sum of the numbers by the number of numbers. For example, using the following dataset:

8, 9, 5, 6, 7, 8 + 9 + 5 + 6 + 7 = 35, 35/5 = 7, so the average is 7. 

the average score of these top students = 95 + 86 +  87 +  91 + 94 + 87/6

                                                              = 540/6 = 90

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The four angles are: A = 110 degrees, B = 10 degrees, C = 120 degrees,   D = 120 degrees

Angles are geometric shapes created when two lines, rays, or line segments cross at a single point.

The two lines or line segments that make up the angle are referred to as the sides or arms of the angle, and this shared point is known as the vertex of the angle.

The amount of rotation required to shift one side to overlap with the opposite side determines the magnitude of an angle.

Angles are commonly expressed in degrees, with 360 degrees representing a full rotation around a point.

Acute angles (less than 90 degrees),

right angles (exactly 90 degrees),

obtuse angles (more than 90 degrees but less than 180 degrees), and straight angles (exactly 180 degrees) are some frequent forms of angles.

What are degrees ?

Angles are measured in degrees, a unit of measurement. 1/360th of a full revolution around a point is equivalent to one degree (1°).

Two perpendicular lines can be used to create a right angle, which has a 90 degree angle.

A straight angle, created by a straight line, has a degree value of 180.

Angles, rotations, and slopes are frequently measured in degrees in the fields of mathematics, physics, engineering, and several others.

The freezing point of water is 0 degrees Celsius (or 32 degrees Fahrenheit), whereas the boiling point is 100 degrees Celsius. In daily life, degrees are frequently used to express temperatures. (or 212 degrees Fahrenheit).

According to question :-

Let the four angles be A, B, C, and D. We know that:

A + B + C + D = 360 (the sum of all angles in a quadrilateral is 360 degrees)

We also know that:

A + B = 120 (the sum of the first two angles is 120 degrees)

C + D = 130 (the sum of the last two angles is 130 degrees)

We can use these equations to solve for the individual angles. First, we can rearrange the equation A + B = 120 to get:

A = 120 - B

Similarly, we can rearrange the equation C + D = 130 to get:

D = 130 - C

Substituting these expressions for A and D in terms of B and C into the equation A + B + C + D = 360, we get:

(120 - B) + B + C + (130 - C) = 360

Simplifying, we get:

250 - B + C = 360

Subtracting 250 from both sides, we get:

C - B = 110

Now we have two equations with two unknowns:

C + B = 130 (from the equation C + D = 130)

C - B = 110

We can add these equations to eliminate B and get:

2C = 240

Dividing by 2, we get:

C = 120

Substituting this value for C into either of the equations above, we get:

B = 10

Now we can use the equation A + B = 120 to find A:

A + 10 = 120

A = 110

Finally, we can use the equation A + B + C + D = 360 to find D:

110 + 10 + 120 + D = 360

D = 120

Therefore, the four angles are:

A = 110 degrees

B = 10 degrees

C = 120 degrees

D = 120 degrees

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The drive-thru with typically more wait time is Burger Quick, because it has a larger median. The Option A.

The median is a measure of central tendency that represents the middle value of a set of data. In this case, the median wait time at Burger Quick is 15.5 minutes, while the median wait time at Super Fast Food is 12 minutes.

This indicates that, on average, customers at Burger Quick experience a longer wait time compared to customers at Super Fast Food. The larger median at Burger Quick suggests that there may be some longer wait times skewing the data towards the higher end which could be due to various factors such as slower service, or other operational issues at Burger Quick resulting in a longer wait time for customers at their drive-thru.

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We can be 90% confident that the true mean additional tax owed in the population of audited estate tax returns falls between $3044.92 and $3875.08.

To construct a 90% confidence interval for the mean additional tax owed in a random sample of 100 audited estate tax returns, we need to use a t-distribution because the population standard deviation is not known. The formula for the confidence interval is:

CI = x' ± t*(s/√n)

Where x' is the sample mean, s is the sample standard deviation, n is the sample size, and t is the t-value from the t-distribution with (n-1) degrees of freedom and a 90% confidence level.

The t-value for a 90% confidence level with 99 degrees of freedom (n-1=100-1=99) is 1.660.

Substituting the values given in the problem, we get:

CI = 3460 ± 1.660*(2520/√100)

CI = 3460 ± 415.08

CI = (3044.92, 3875.08)

This means that if we were to repeat this sampling process many times, 90% of the time the true mean would be captured by the confidence interval.

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Complete question is:

In a random sample of 100 audited estate tax returns, it was determined that the mean amount of additional tax owed was $3460 with a standard deviation of $2520

Construct and interpret a 90% confidence interval for the mean additional.

The area of the small triangle is 4 sq.cm.. The area of the medium triangle is 12 sq.cm. The area of the large triangle is 24 sq. cm.

With three sides, three angles, and three vertices, a triangle is a closed, two-dimensional object. A polygon also includes a triangle.

Given data:

Dimensions-

area of triangle = 1/2 *base * height

The area of the small triangle = 1/2*2*4 = 4 sq.cm.

The area of the medium triangle = 1/2*4*6 = 12 sq.cm.

The area of the large triangle = 1/2*6*8 = 24 sq. cm

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Complete question:

Dimensions-

small triangle: base = 2 cm, height = 4cm

medium triangle: base = 4 cm , height = 6 cm

Larger triangle: base = 6 cm ,height = 8 cm

The area of the small triangle is_______

The area of the medium triangle is______

The area of the large triangle is______

This parallelogram is a rhombus.

Using the characteristics of parallelograms, we can establish what kind of parallelogram this is. In addition to having opposite sides that are parallel and congruent, parallelograms also have opposite angles that are congruent.

The distance formula can be used to get the length of each side of the parallelogram first.

A = 5, B = 5, C = 5, D = 5, etc.

As all the sides are identical in length, we know that this object is a rhombus.

The slopes of the lines comprising the opposing sides of the parallelogram can also be determined in a different way:

AB's slope is (8-3)/(2-2) = undefined.

CD's slope is (3-8)/(7-7) = undefined.

BC has a slope of 0 (8-8)/(7-2)

AD slope is equal to 0 (3-3)/(7-2)

The slopes of opposing sides can be seen to be both undefinable or zero, suggesting that they are parallel. Moreover, this is a rhombus because the opposing sides are the same length.

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The equations for which 8 is a solution are: x - 4 = 4, 2x = 16, x/2 = 16, and x/8 = 1.

An equation is a mathematical statement that shows that two expressions are equal to each other. It typically consists of variables, constants, and mathematical operations such as addition, subtraction, multiplication, and division. The goal is usually to solve for the value of the variable that makes the equation true.

In the given question,

The equations in which 8 is a solution are:

x - 4 = 8 (which simplifies to x = 12)

2x = 16 (which simplifies to x = 8)

x/2 = 16 (which simplifies to x = 32)

x/8 = 1 (which simplifies to x = 8)

Therefore, the correct answers are:

x - 4 = 8

2x = 16

x/2 = 16

x/8 = 1.

The equations for which 8 is a solution are: x - 4 = 4, 2x = 16, x/2 = 16, and x/8 = 1.

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x² - 16x + 64 = 0 is the equation whose solution is 8.

How to check for which equations is 8 a solution?

To check if 8 is a solution for each equation, we substitute x = 8 into each equation and see if the equation is true or not.

x + 6 = 8 + 6 = 14

and

2x + 2 = 2(8) + 2 = 18, which is not equal to the value of (x+6).

Therefore, 8 is not a solution to this equation.

4x - 4 = 4(8) - 4 = 28,

and

10 - 2x = 10 - 2(8) = -6, which is not equal to 28.

Therefore, 8 is not a solution to this equation.

2x - 4 = 2×8-4 = 12

and

3x-24 = 3×8-24 = 0 which is not equal to 12. Therefore, 8 is not a solution to this equation.

Now,

x² - 16x + 64 = 0 (which can be factored as (x-8)² = 0)

x = 8 (which is always true)

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Correct question is "For which equations is 8 a solution? Select the correct answers from the following,

1) x + 6 = 2 x + 2

2) 10 - 2x = 4 x - 4

3) 2 x-4 = 3 x - 24

4) x² - 16x + 64 = 0

The sample may not be representative of the population's preferences for frozen desserts.

Sampling technique that Keziah is using is convenience sampling. Convenience sampling is a non-probability sampling technique.

The researcher selects the easiest and most convenient individuals to participate in the study.

Keziah is simply surveying shoppers who are exiting a grocery store on the west side of her town without any predetermined criteria for selection.

As a result, the sample may not be representative of the population's preferences for frozen desserts.

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e y = e y is the expression for the aggregate demand curve the level of result is defined exclusively by the equilibrium state in the goods market and is autonomous of the monetary policy curve.

Monetary policy curve = r = 0 0.5π

IS curve e y = 19 − r

To calculate the aggregate demand curve, we need to converge the IS curve and the monetary policy curve. By substituting the monetary policy curve into the IS curve:

e y = 19 − r

e y  = 19 − 0.5π

π = 38 - 2e y

Substituting  this expression for π into the monetary policy curve:

r = 0.5π = 19 - e y

e y = 19 - r

e y  = 19 - (19 - e y)

e y = e y

The aggregate demand curve is simply equated as:

e y = e y

Therefore we can conclude the expression for the aggregate demand curve as e y = e y.

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To find the expression for the aggregate demand curve, we will first solve for the equilibrium interest rate (r) and output level (y) using the given monetary policy curve and IS curve.

Step 1: Express r from the monetary policy curve
r = 0.5π

Step 2: Substitute the value of r in the IS curve
y = 19 - r
y = 19 - 0.5π

Step 3: Rearrange the equation to express the aggregate demand curve
y = 19 - 0.5π

The aggregate demand curve is represented by the equation y = 19 - 0.5π.

EXPLAINATION

To find the expression for the aggregate demand curve, we can use the equation:

Aggregate Demand = C + I + G + NX

Where:
C = Consumption
I = Investment
G = Government Spending
NX = Net Exports

We can express the Consumption and Investment components as functions of output (Y) and the interest rate (r):

C = a + bY - c(r)
I = d - e(r)

Where:

a, b, c, d, and e are constants.

Now, we can substitute the expressions for Consumption and Investment into the Aggregate Demand equation:
Aggregate Demand = a + bY - c(r) + d - e(r) + G + NX

Next, we can use the IS-LM model to solve for output (Y) in terms of the interest rate (r). From the given IS curve, we have:

Y = 19 - r

Now, we can substitute this expression into the Aggregate Demand equation:
Aggregate Demand = a + b(19-r) - c(r) + d - e(r) + G + NX
Simplifying this expression, we get:
Aggregate Demand = (a + 19b + d + G + NX) - (b + c + e)r
Thus, the expression for the Aggregate Demand curve is:

AD = (a + 19b + d + G + NX) - (b + c + e)r

Where: a, b, c, d, e, G, and NX are constants.

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As a result, the response is A .The number of dollars it costs to rent the bowling lane for 3 hours.

The US, Canada, Australia, and some nations in the Pacific, Caribbean, Southeast Asia, Africa, and South America all use the dollar as their primary unit of exchange It is a type of paper money, currency, and monetary unit used in the United States that is equivalent to 100 cents

The total cost (in dollars) for renting a bowling alley for x hours is represented by the function b(x) = 3x + 15.

We change x in the function to 3 to obtain b(3).

B(3) = 3(3) + 15 = 9 + 15 = 24 is the result.

Therefore, b(3) is the amount of money required to rent the bowling alley for three hours.

As a result, the response is A.

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The area of the region is 6 square unit.

The base of the triangle is the distance between the x-coordinates where the curves y = √x and y = −x + 6 intersect, which is 2. The height of the triangle is the distance between the y-coordinate where y = 0 intersects the y-axis and the y-coordinate where the line y = −x + 6 intersects the y-axis. This distance is 6.

Therefore, the area of the region bounded by the curves y = √x, y = −x + 6, and y = 0 is:

Area = 1/2 * base * height

    = 1/2 * 2 * 6

    = 6

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Answer:

3.535

Step-by-step explanation:

35% is the same as .35

therefore, you can multiply 10.1 by .35 to get 3.535

Answer:

$3.45

Step-by-step explanation:

The estimated radius of the circular object with an area of 40 cm² is 3.57 cm

To find the inverse function r(A), we can start by setting A = πr² and solving for r:

A = πr²

A/π = r²

r = √(A/π)

Therefore, the inverse function is r(A) = √(A/π).

To estimate the radius of a circular object with an area of 40 cm², we can simply substitute A = 40 cm² into the inverse function:

r(40) = √(40/π) ≈ 3.57 cm

Therefore, the estimated radius of the circular object with an area of 40 cm² is approximately 3.57 cm

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A sequence is arithmetic sequence when the first differences are all the same non-zero number.

An arithmetic sequence is a set of integers where each term is created by multiplying the preceding term by a defined number. The common difference of the series, which is a constant value, is the same for all following pairs of terms.

As a result, a sequence can be said to be arithmetic if its first differences all contain the same non-zero value. For instance, the arithmetic sequence 3, 6, 9, 12, 15,... has a common difference of 3.

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The variance is equal to the squared value of the standard deviation.(Option a)

The variance is a measure of how spread out a set of data is. It is calculated by taking the average of the squared differences of each data point from the mean. The standard deviation, on the other hand, is the square root of the variance and measures the spread of data in relation to the mean.

Therefore, the variance is equal to the squared value of the standard deviation. Mathematically, Var(X) = σ^2, where Var(X) is the variance and σ is the standard deviation.

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The area of circle is with radius 3xy³ is 9πx²y⁶.

Area of a circle is the region occupied by the circle in a two-dimensional plane. It can be determined easily using a formula, A = πr2.

Radius of a circle is the distance from the center of the circle to any point on it's circumference. It is usually denoted by 'R' or 'r'.This quantity has importance in almost all circle-related formulas. The area and circumference of a circle are also measured in terms of radius. Circumference of circle = 2π (Radius)

area of circle=πr²

=π×(3xy³)²

=9πx²y⁶

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Part A:

The correct answers are:

The data set is numerical data

The data in this set can be quantified in the form of numbers.

The set has an outlier

An outlier is an extreme value that differs from the rest of the set. The outlier in this set is 5.

A box plot is an appropriate data display for this data

A box plot is great for showing distribution of data. A circle chart would not be good for this set because circle charts are better for part-to-whole data.

Part B:

A: Students in his class have between 5 to 950 photos stored on their cell phones.

The text at the top explains that this data was gathered from students in Shamar's class, and the data ranges from 5 to 950.

Answer:

6.02

Step-by-step explanation:

sin 37=x/10

x/10=sin 37

x=10(sin 37)

x=6.02

Answer: tan(R) = m/p

Step-by-step explanation: In the right triangle shown in the diagram, we know that the tangent of angle R is equal to the length of the opposite side (m) divided by the length of the adjacent side (p).

Therefore, an expression in terms of m and p that represents tan(R) would be tan(R) = m/p

The population of unionid mussels start decreasing approximately at the rate of 75% after zebra mussels were introduced .

The change occurs as zebra mussels consuming almost all the resources available  into the Hudson River.

Change in the population of the unionid mussels and zebra mussels over the course of six years are as follow,

population of unionid mussels in 1991 in number per square meter

= 8

Then in the year 1994 it become 3 number per square meter

And finally in the year 1994 it become 2 number per square meter

Change in population of unionid mussels from 1991 to 1997

= [( 2 - 8 )/ 8] × 100

= -75%

Negative sign indicate that decrease in the population.

Now ,

Change in population of zebra mussels is given by,

In 1991 in number per square meter = 4

In 1994 in number per square meter = 1,329

In 1997 in number per square meter = 3,181

Change in population of zebra mussels from 1991 to 1997

= [( 3181 - 4 )/ 4] × 100

= 79425%

There is increase in the population of zebra mussels in thousands.

Reason of change is zebra mussels introduced into the Hudson River

and they eating almost all the resources available in the area.

Zebra mussels consumes large amount of phytoplankton and other small organisms available in the water .

Due to lack of resource availability unionid mussels population decreasing year by year.

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The above question is incomplete, the complete question is:

Unionid mussels are native to the Hudson River in New

York State. In the early 1990s, zebra mussels were

introduced into the Hudson River. The table shows the

number of unionid mussels and zebra mussels over the

course of six years.

How did the population of unionid mussels change

after zebra mussels were introduced? Why did this

change occur?​

attached data.

Answer:

Step-by-step explanation:

a) The system of equations modeling this scenario is as follows:

C = 11.50 + 0.9n

C = 13.25 + 0.55n.

b) The number of toppings where the cost is the same at either Pizza Palace or Tasty Pizza is 5.

What is a system of equations?

A system of equations is two or more equations solved concurrently.

A system of equations is also called simultaneous equations because the equations are solved at the same time or simultaneously.

                              Pizza Palace    Tasty Pizza

Pizza cost per unit       $11.50             $13.25

Topping cost per unit  $0.90              $0.55

Let the number of toppings = n

Let the total cost for the pizza at each pizza place = c

Equations:

The total cost at Pizza Palace C = 11.50 + 0.9n... Equation 1

The total cost at Tasty Pizza, C = 13.25 + 0.55n... Equation 2

For the total cost, c, to be the same at the pizza places, Equation 1 must equate Equation 2:

That is, C = C.

Substituting the values of C:

11.50 + 0.9n = 13.25 + 0.55n

0.35n = 1.75

n = 5

The probability that the mean annual salary of a random sample of 64 teachers from state X is less than $52,000 is approximately 0.005 or 0.5%.

The sampling distribution of the mean is normally distributed with a mean equal to the population mean and a standard deviation equal to the population standard deviation divided by the square root of the sample size.

Here, we are given that the population mean is $54,000 and the population standard deviation is $5,000. We are also told that the sample size is n = 64.

To find the probability that the mean annual salary of a random sample of 64 teachers is less than $52,000, we need to standardize the sample mean using the sampling distribution of the mean.

Z = (x' - μ) / (σ / √n)

where x' is the sample mean, μ is the population mean, σ is the population standard deviation, and n is the sample size.

Substituting the given values, we get:

Z = (52,000 - 54,000) / (5,000 / √64)

= -2.56

We can then look up the probability of a standard normal variable being less than -2.56 using a standard normal table or calculator, which gives us a probability of approximately 0.005.

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Complete question is:

The annual salary of teachers in a certain state X has a mean of $54,000 and standard deviation of σ = $5,000. What is the probability that the mean annual salary of a random sample of 64 teachers from this state is less than $52,000?

Answer:

11x + 2y

Step-by-step explanation:

Expand the equation:

3(x + 2y) + 4(2x - y)

Multiply 3, by x & by 2y:

3(x + 2y) ===> 3x + 6y

Then, multiply 4, by 2x & by -y:

4(2x - y) ===> 8x - 4y

Finally, you add/subtract the two results from the parenthesis:

3x + 6y + 8x - 4y ===> 11x + 2y

Your final expanded result will be: 11x + 2y.

A control group on the dependent variable, P-value is higher than the usual cutoff of 0.05 for rejecting the null hypothesis that there is no difference between the groups, this is frequently regarded as evidence that the difference between the groups is not statistically significant.

In an analysis testing difference between an experimental and a control group on the dependent variable, a p-value of 0.07 means that there is a 7% chance of obtaining a difference as large or larger than the observed difference between the two groups, assuming that there is no true difference between the groups in the population.

Interpreted as evidence that the difference between the groups is not statistically significant, since the p-value is greater than the conventional threshold of 0.05 for rejecting the null hypothesis of no difference between the groups.

Statistical significance does not necessarily imply practical significance, and there may still be a meaningful difference between the groups that is not detected by the statistical test.

Additionally, the interpretation of a p-value depends on the study design, sample size, and other factors, and should be considered in conjunction with other information about the study.

True difference between the groups in the population, a p-value of 0.07 indicates that there is a 7% chance of finding a difference as large or larger than the observed difference between the two groups in an analysis testing the difference between an experimental and a control group on the dependent variable.

P-value is higher than the usual cutoff of 0.05 for rejecting the null hypothesis that there is no difference between the groups, this is frequently regarded as evidence that the difference between the groups is not statistically significant.

It's crucial to remember that statistical significance does not always imply practical relevance.

There could still be a significant difference between the groups that is not shown by statistical analysis.

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