To make a stable structure, the method of joints can be used to calculate the force BD in the truss shown.
This method uses the equations of equilibrium to determine the forces in the members of a truss. To calculate the force BD, one needs to sum the moments about point A and equate them to zero.
The moment is given by M = FxD, where F is the force, and D is the perpendicular distance from the point of interest to the line of action of the force. Therefore, the force BD can be calculated using the equation:
MAB = 0 = (BD)(2) - (AE)(5)
BD = 5AE/2
To find the forces in members CD and CE using the method of sections, one needs to cut through the truss along a line passing through points C and E.
Then, the force in member CD can be found by using the equation of equilibrium, where the sum of the forces in the x-direction and the sum of the forces in the y-direction must be equal to zero. Similarly, the force in member CE can also be calculated using the same method.
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for the divisibility relation on the set {1, 2, 3, 6, 8, 12, 24, 36}, what will be the least upper bound of elements {8, 12}?
The least upper bound of the elements {8, 12} under the divisibility relation on the set {1, 2, 3, 6, 8, 12, 24, 36} is 24.
To find the least upper bound of a set of elements under a relation, we look for the smallest element in the set that is greater than or equal to all of the elements in the set.
Under the divisibility relation, an element a is said to be divisible by an element b (written as b divides a) if a is a multiple of b, that is, a = b * k for some integer k. For example, 8 divides 24 because 24 = 8 * 3.
We want to find the least upper bound of the elements {8, 12} under this relation on the set {1, 2, 3, 6, 8, 12, 24, 36}. That means we want to find the smallest element in the set that is a multiple of both 8 and 12.
We can list the multiples of 8 and 12 in the set as follows:
Multiples of 8: 8, 24
Multiples of 12: 12, 24, 36
We can see that the smallest element in the set that is a multiple of both 8 and 12 is 24.
Therefore, the least upper bound under the divisibility relation on the set {1, 2, 3, 6, 8, 12, 24, 36} is 24.
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PLEASE HELP MEEEEEEEEEEEE!
What is the measure of the unknown angle?
A straight angle divided into a fifty-eight-degree angle and an unknown angle.
100°
112°
120°
122°
Therefore , the solution of the given problem of angle comes out to be response is 122 degrees.
What does an angle mean?The walls in the top and bottom split the circular lines making up a skew's extremities using Cartesian coordinates. It is possible for two beams to converge at a junction spot. Another result of two objects interacting is an angle. They most closely resemble dihedral forms. Two line beams can be arranged in different ways at their ends to form a two-dimensional curve.
Here,
A straight path has a total of 180 degrees in angles. By deducting the known angle from 180 degrees, we can determine the measure of
the unknown angle if we have a straight line and a 58-degree angle.
As a result, the undetermined angle's measurement is:
=> 180° - 58° = 122°
The response is 122 degrees.
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The volume of the cone shown is 240 cubic meters. The height of the cone is 5 meters. Find the length of the slant height, x.
Answer:
9.4 meters
Step-by-step explanation:
We can use the formula for the volume of a cone:
V = (1/3) * pi * r^2 *h
where V is the volume, r is the radius of the base, and h is the height.
We know the volume and height of the cone, so we can solve for the radius:
240 = (1/3) * pi * r^2 * 5
r^2 = 240 / (pi * 5/3)
r^2 = 45.68
r = sqrt(45.68)
r = 6.76 meters (rounded to two decimal places)
Now we can use the Pythagorean theorem to find the slant height:
x^2 = r^2 + h^2
x^2 = 6.76^2 + 5^2
x^2 = 88.5276
x = sqrt(88.5276)
x = 9.4 meters
draw a quadratic function that only has one root at 3
The quadratic function that only has one root at 3 and passes through the point (0,4) is: f(x) = (4/9)(x - 3)^2
What is quadratic equation?A quadratic equation is a polynomial equation of degree 2, meaning that the highest exponent of the variable is 2. It has the general form:
ax^2 + bx + c = 0
If a quadratic function has only one root at 3, then it must be of the form:
f(x) = a(x - 3)^2
where a is a constant. This is because a quadratic function with only one root must have a double root, meaning that the parabola only touches the x-axis at that point and does not cross it. And a quadratic function with vertex at (3,0) and opening upwards satisfies this condition.
To determine the value of a, we can use any additional information that may be provided, such as the value of the function at another point. For example, if we know that f(0) = 4, then we can substitute these values into the equation to get:
4 = a(0 - 3)^2
4 = 9a
a = 4/9
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The quadratic function that has only one root at 3 and passes through (0,4) is: [tex]f(x)=(\frac{4}{9} )(x-3)^{2}[/tex]
Why is it called a quadratic equation?A quadratic equation is a second-degree algebraic problem in x. In its standard form, the quadratic equation is [tex]ax^2+bx+c=0[/tex], where an as well as b are the coefficients, x is the variable, and c is the value of the constant component. The essential requirement for a formula to be a quadratic equation is that the coefficient of [tex]x^2[/tex] is not zero (a 0). When writing an equation with quadratic equations in conventional format, the [tex]x^2[/tex] term comes first, then the x term, and lastly the constant term.
A quadratic equation is a polynomial expression of degree 2, which means that the variable's greatest exponent is 2. It takes the following basic form:
[tex]ax^2+bx+c=0[/tex]
If the quadratic function has only one root at 3, it must have the following form:
[tex]f(x)=a(x-3)^2[/tex]
This requirement is satisfied by a quadratic function with a vertex at (3,0) and an opening upwards.
We know that f(0) = 4, so we can plug these numbers into the equation to get:
[tex]4=a(0-3)^2[/tex]
simplify the above equation
4 = 9a
The value is,
a = 4/9
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What are the side lengths of this triangle? Round to the nearest tenth.
Answer:B
Step-by-step explanation:
Adjacent side to the given angle = 7.072
Hypotenuse = opposite side to given angle ^2 + adjacent side to given angle ^2
Hypotenuse = 8.27666502886
in a sampling distribution of means 1. the distribution will approximate the normal distribution (bell curve). 2. the mean of the sampling dsitribution will equal the mean of the population 3. the standard deviation of the sampling distribution is called the standard error. this is based on the
In a sampling distribution of means, the distribution will approximate the normal distribution, the mean of the sampling distribution will equal the mean of the population and the standard deviation of the sampling distribution is based on Central Limit Theorem, option A.
The central limit theorem (CLT) of probability theory states that, under the assumption that all samples are of equal size and regardless of the population's actual distribution shape, the distribution of a sample variable approaches a normal distribution (i.e., a "bell curve") as the sample size increases.
In other words, the central limit theorem (CLT) is a statistical assumption that, given a sufficiently enough sample size from a population with a limited degree of variance, the mean of all sampled variables from the same population will be roughly equal to the mean of the entire population. According to the law of large numbers, these samples also resemble a normal distribution, with their variances almost equaling the variation of the population as the sample size increases.
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Complete question:
In a sampling distribution of means... 1. the distribution will approximate the normal distribution (bell curve). 2. the mean of the sampling distribution will equal the mean of the population 3. the standard deviation of the sampling distribution is called the standard error. This is based on the...
Central Limit Theorem
Standardization of Transformation
Z-Score Distribution Table
Relative Frequency of Probability
What is the percent of decrease from 98.7 to 0?
Answer:
100% because it goes to zero which means 100% is decreased
I need some help please
The equation of the line is y = -3x + 4.
How to find the equation of a line?The equation of a line can be represented in slope intercept form as follows:
y - mx + b
where
m = slope of the lineb = y-intercept of the lineHence, using (1, 1) and (0, 4)
Therefore,
m = 4 - 1 / 0 - 1
m = 3 / -1
m = -3
Hence, the y-intercept of the line is as follows:
y = -3x + b
4 = -3(0) + b
b = 4
Therefore, the equation of the line is y = -3x + 4
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WILL GIVE BRAINLY
If sin (x) =3 cos(x), then what is sin(x) times cos (x)?
True or False: Of the major economies in the world, Italy had the highest growth rate of real GDP per capita between 1982 and 2009
The given statement regarding the GDP of major economies of the world is False.
To determine the accuracy of this statement, we would need to gather data on the real GDP per capita growth rates of major economies between 1982 and 2009 and compare them. Without this data, we cannot definitively say whether the statement is true or false. However, based on historical trends and current economic data, it is unlikely that Italy had the highest growth rate of real GDP per capita during this time period.
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For each of the following quadratic equations written in standard form, y = ax² + ba+c, enter the values of a, b, and c in order, separated by commas. a) y = 3x² - 8x +1 b) y = 4x² - 3 c) y = 8x² + 2x
Answer:
Step-by-step explanation:
[tex]y=ax^2+bx+c[/tex]
a) [tex]a=3,b=-8,c=1[/tex]
b) [tex]a=4,b=0,c=-3[/tex]
c) [tex]a=8,b=2,c=0[/tex]
Mattew is going on a trip to Hawaii and takes a limo to the airport. The driver says it will cost $20 plus 20 cents a mile. Mattew lives 50 miles from the airport
Matthew can travel up to 150 miles for $50, assuming the cost of the limo ride remains constant at a $20 fixed cost plus $0.20 per mile. Let's say Matthew has $50 to spend on the limo ride.
We know that the cost per mile is $0.20, so we can set up an equation:
Cost = $20 + $0.20 x Distance
We can substitute $50 for Cost and solve for Distance:
$50 = $20 + $0.20 x Distance
$30 = $0.20 x Distance
Distance = $30 / $0.20
Distance = 150 miles
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What is the value of x given the following image?
The value of x given the following image is 13.
What is congruent angle?
When two angles have the same magnitude, they are considered congruent. In other words, they have the same angle degree. For example, if one angle measures 45 degrees, any other angle that also measures 45 degrees is congruent to it.
Congruent angles are denoted by the symbol ≅. So, if angle A and angle B have the same measure, we can write it as:
Angle A ≅ Angle B
Congruent angles have the same properties and characteristics, including being able to fit into the same spaces and be formed by the same geometric shapes. In practical terms, congruent angles are identical when placed side by side.
Finding the value of x :
Angle ABC and Angle EBD are congruent.
Value of Angle ABC is (-3x+14) degrees.
Value of Angle EBD is (-x-12) degrees.
Equating the two angles we get ,
[tex]-3x+14=-x-12[/tex]
[tex]-2x=-26[/tex]
[tex]2x=26[/tex]
[tex]x=13[/tex]
Therefore, the value of x given the following image is 13.
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Rewrite each equation without absolute value for the given conditions.
(Please help)ASAP
1. y = |x − 3| + |x +2| − |x − 5| if x >5
2. y = |x − 3| + |x +2| − |x − 5| if x < −2
3. y = |x − 3| + |x +2| − |x − 5| if 3
The equations without absolute value for the given conditions are: 1. y = -3x + 6 if x > 5; 2. y = -x - 6 if x < -2; 3. y = x - 6 if 3 ≤ x ≤ 5, and y = -x - 6 if x < 3.
1. When x > 5, the expression (x - 3) is positive, (x + 2) is positive, and (x - 5) is positive. Thus, to get absolute value we can rewrite the equation as:
y = (x - 3) + (x + 2) - (x - 5)
Simplifying this, we get:
y = 2x - 4
2. When x < -2, the expression (x - 3) is negative, (x + 2) is negative, and (x - 5) is negative. Thus, we can rewrite the equation as:
y = -(x - 3) - (x + 2) + (x - 5)
Simplifying this, we get:
y = -2x + 6
3. When -2 ≤ x ≤ 3, the expression (x - 3) is negative, (x + 2) is positive, and (x - 5) is negative. Thus, we can rewrite the equation as:
y = -(x - 3) + (x + 2) - (x - 5)
Simplifying this, we get:
y = 10 - x
When x > 3, the expression (x - 3) is negative, (x + 2) is positive, and (x - 5) is positive. Thus, we can rewrite the equation as:
y = -(x - 3) + (x + 2) + (x - 5)
Simplifying this, we get:
y = -2x + 6
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a local sub shop offers five different breads, four different meats, three different cheses, and six different vegetables. you can choos one bread and any number of the other items. find the total number of combinations of sandwiches possible
The total number of combinations of sandwiches possible is 360.
A local sub shop offers five different breads, four different meats, three different cheeses, and six different vegetables. You can choose one bread and any number of the other items.
To find the total number of combinations of sandwiches possible, we can use the multiplication rule.The multiplication rule states that if there are m ways to do one task and n ways to do another task, then there are m × n ways to do both tasks.
Similarly, if there are m ways to do one task, n ways to do another task, and p ways to do a third task, then there are m × n × p ways to do all three tasks.
To apply the multiplication rule to this problem, we can multiply the number of options for each component:Breads: 5 optionsMeats: 4 optionsCheeses: 3 optionsVegetables: 6 options
To find the total number of combinations, we can multiply the number of options for each component:5 × 4 × 3 × 6 = 360Therefore, there are 360 possible combinations of sandwiches.
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In 2010, a total of 2187 of the employees at
Leo's company owned a petrol car.
In 2013, there were 1536 employees with
petrol cars.
Assuming this number decreases
exponentially, work out how many employees
owned a petrol car in 2019.
Give your answer to the nearest integer.
we can expect that approximately 815 employees owned a petrol car in 2019 (rounded to the nearest integer).
How to solve exponential function?We can model the number of employees owning petrol cars in the years 2010 and 2013 using the exponential decay formula:
[tex]$$N(t) = N_0 e^{-kt}$$[/tex]
where N(t) is the number of employees owning petrol cars at time t, [tex]$N_0$[/tex] is the initial number of employees owning petrol cars (in 2010), k is the decay constant, and t is the time elapsed since 2010 (in years).
We can use the given information to find the value of k:
In 2013 (3 years after 2010), the number of employees owning petrol cars decreased from 2187 to 1536:
[tex]$$1536 = 2187 e^{-3k}$$[/tex]
Dividing both sides by 2187 gives:
[tex]$$e^{-3k} = \frac{1536}{2187}$$[/tex]
Taking the natural logarithm of both sides gives:
[tex]$$-3k = \ln\left(\frac{1536}{2187}\right)$$[/tex]
Solving for k gives:
[tex]$k = -\frac{1}{3} \ln\left(\frac{1536}{2187}\right) \approx 0.1565$$[/tex]
Now we can use the exponential decay formula to find the number of employees owning petrol cars in 2019 (9 years after 2010):
[tex]$$N(9) = 2187 e^{-0.1565 \cdot 9} \approx 815$$[/tex]
Therefore, we can expect that approximately 815 employees owned a petrol car in 2019 (rounded to the nearest integer).
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Show by completing the survey slip on the answer sheet , how Samantha, a 14 year old girl who feels a lot of pressure to achieve at school, would complete the survey form
Samantha would fill in the following information on the survey sheet based on the data provided:
Sex: Female
Age: 13-14
How much pressure do you feel to achieve at school? c. A lot
Samantha, a 14-year-old girl, would complete the survey slip by selecting "Female" under "Sex," "13-14" under "Age," and "A lot" under "How much pressure do you feel to achieve at school?"
This indicates that Samantha is feeling a significant amount of pressure to succeed academically. It's common for high school students to feel pressure to perform well in school, and this can be due to various factors such as parental expectations, college aspirations, or personal goals.
As a school counselor, it's essential to understand the level of pressure students are experiencing to provide appropriate support and guidance. Identifying and addressing the sources of pressure can help students like Samantha better manage stress and achieve academic success.
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The question is -
A school counselor conducted a survey among a group of high school students using the following survey slip:
Survey (please tick the correct boxes)
Sex: Male Female
Age: 13-14 15 -16 17–18
How much pressure do you feel to achieve at school?
a. None b. A little c. A lot And d. the unbearable amount
Show, by completing the survey slip on the answer sheet, how Samantha – a 14-year-old girl who feels a lot of pressure to achieve at school – would complete the survey
Write the equation of the line that is parallel to y=- 3/2and passes through
point (2,3).
Answer:
[tex]y-3=-\frac{3}{2}(x-2)[/tex]
Step-by-step explanation:
In order to find an equation that is parallel, it must have the same slope. This means the y intercept could literally be anything.
By equation of the line, we can write it in point slope form
[tex]y-y1=m(x-x1)[/tex]
where y1 and x1 are points on the coordinate plane and m is the slope.
We are already given the slope, so we just plug in the numbers.
[tex]y-3=-\frac{3}{2}(x-2)[/tex]
Which statements about this graph are true? Select all that apply.
The graph has a y-intercept at (0, 8).
The graph has a maximum point at (-3, 4).
The graph has an x-intercept at (1,0).
The graph has a line of symmetry at x = -3.
The graph has a minimum value of 4.
The graph has zeros in -5 and -1.
Find the missing side length.
Answer: 9 cm
Step-by-step explanation: 4+5=9
you are placing 11 different pictures on separate pages of a photo album. how many different ways can you order the 11 pictures in the album?
The number of different ways to order 11 different pictures in a photo album is 39,916,800.
To calculate this number, we can use the formula for permutations, which is:
n! / (n - r)!
where n is the total number of items to choose from (in this case, 11 pictures) and r is the number of items to be selected (also 11, since we want to order all the pictures).
Plugging in the values, we get:
11! / (11 - 11)! = 11! / 0! = 11!
We can simplify 11! as:
11! = 11 x 10 x 9 x 8 x 7 x 6 x 5 x 4 x 3 x 2 x 1
Using a calculator or by hand, we can find that 11! equals 39,916,800.
Therefore, there are 39,916,800 different ways to order 11 different pictures in a photo album.
Hence, the number of ways to order 11 pictures in a photo album can be calculated using the permutation formula, which gives a total of 39,916,800 possible arrangements.
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Solve for Z =
Please answer
Answer:
z = 32°
vertical angles are equal to each other. 32° ≅ z°
A certain bookshop has 10 dozen chemistry books, 8 dozen physics books, 10 dozen economics books. Their sellilng prices are Rs. 80, Rs. 60 and Rs. 40 each respectively. Find the total amount the bookshop will receive by selling all the books, using matrix algebra
The bookshop will receive a total amount of Rs. 23,200 by selling all the books.
WHAT IS SELLING PRICE ?
The selling price is the price at which a product or service is sold to a customer. It is the amount of money that a seller charges to a buyer for a particular product or service. The selling price may include various factors such as the cost of production, overhead costs, profit margin, taxes, and other charges. It is an important concept in business and commerce, as it determines the revenue generated by a company and its profitability.
We can represent the given information using matrices as follows:
Let A be the matrix of the number of books in dozens, where each row represents a subject and each column represents the number of dozens of books:
A =
| 10 8 10 |
|____________|
Let B be the matrix of the selling prices of each book, where each row represents a subject and each column represents the selling price of each book:
B =
| 80 |
| 60 |
| 40 |
To calculate the total amount the bookshop will receive, we need to multiply the matrices A and B using matrix algebra:
C = A * B
C =
| 10 8 10 | | 80 | | 12000 |
| 60 | = | 7200 |
| 40 | | 4000 |
Therefore, the bookshop will receive a total amount of Rs. 23,200 by selling all the books.
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in the packet of mixed candies there are 2 fruit centers for every 3 caramel centers. there are 30 candies in the packet
Answer: there are 12 fruit centers and 15 caramel centers
Step-by-step explanation:
can someone help me please i don't understand this
The transformation that would not result in a congruent figure when performed on triangle RST is A. A dilation by a scale factor of 2 with respect to point R.
The equation that has the same solution as the system of equations is C. 4x + 9y = 10
4x + 6y = 24.
Which transformations changes congruency ?Transformations that change the shape or size of a figure can change its congruency. A dilation is a transformation that changes the size of a figure so this would mean that RST dilated would not result in a congruent figure.
How to find the equation?When the system of equations, 4x + 9y = 10, 2x + 3y = 12 is solved, we find that x = 13 and y = - 14/ 3.
Options A,B, and D cannot have the same value because the numbers are the same and so they should have different values., Only option C can be the same and when the values are slotted in, this is proven.
Option C, 4x + 9y = 10 , 4x + 6y = 24 is therefore correct.
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State the coordinates of the point.
Answer:
Step-by-step explanation:
look get 8 then 7 then you get 5 and luh tyler.
a 86-ft tree casts a shadow that is 110 ft long. what is the angle of elevation of the sun? round the answer to two decimal places
The angle of elevation of the sun is 38.24 degrees (rounded to two decimal places).
The ratio of the height of the tree and the length of the shadow can be found by using the formula for tan which is given by:
tan(x) = (opposite/hypotenuse)
In the given problem statement, the height of the tree is opposite to the angle we are trying to find and the length of the shadow is the hypotenuse of the right-angled triangle. Therefore, we can say that:
tan(x) = opposite/hypotenuse = 86/110
We can use the inverse tangent function to find the value of x. This is because tan is the ratio of the opposite side (height of the tree) to the adjacent side (length of the shadow), and the inverse tangent function gives the angle that has that ratio.
So, tan x = 86/110 => x = tan⁻¹ (86/110) = 38.24 degrees (rounded to two decimal places). Therefore, the angle of elevation of the sun is 38.24 degrees.
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Will ran around a track that was 1/4 of a mile long. He ran around the track 12 times. How many miles did Will run?
When Will ran around the track 12 times, he ran a total distance of 12 x 0.25 = 3 miles. The answer is 3 miles.
What is a lap?The lap is the total distance a runner has to cover to complete one full circuit of the track. Depending on the size of the track, the lap distance can vary.
In the case of Will, he ran a total of 12 laps of a track that was 1/4 of a mile long.
This means that he ran a total distance of 12 x 0.25 = 3 miles.
This is because 1/4 of a mile is equal to 0.25 miles.
The equation used to calculate the total distance run by Will is: Distance = Number of laps x Length of each lap.
This equation can be used to calculate the total distance run by any runner on any track of any length.
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explain the difference between a population characteristic and a statistic. a population characteristic is a quantity that summarizes a ---select--- . a statistic is a quantity calculated from the values in a ---select--- .
Answer:
population, sample
Step-by-step explanation:
A population characteristic is a quantity that summarizes a
population
Correct: Your answer is correct.
. A statistic is a quantity calculated from the values in a
sample
the fact that the sample averages are not all the same is an illustration of the concept of , and the fact that the sample averages systematically overestimate the true population average is an illustration of the concept of . group of answer choices
The fact that the sample averages are not all the same can be an illustration of the concept of the central limit theorem, while the fact that the sample averages systematically overestimate the true population average can be an illustration of the concept of bias.
The given statement is incomplete, we need additional information in order to provide a solution. It is important to provide the complete statement so that we can help you in the best way possible.
However, based on the given options, we can provide a general explanation of the concepts mentioned, which are the concepts of the central limit theorem and bias.
The central limit theorem states that the distribution of the sample means approaches a normal distribution as the sample size increases. In other words, as the sample size increases, the means of the samples drawn from a population tend to be normally distributed. The central limit theorem has important implications for statistics and hypothesis testing.
Bias, on the other hand, refers to a systematic error in data collection or analysis. Bias can be caused by a variety of factors, such as the selection of participants or the measurement instruments used. A biased sample or analysis can lead to inaccurate conclusions about a population.
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