What is Function?
Function is the relationship between inputs where each input is related to exactly one output. It is a special relationship among the inputs (i.e. the domain) and their outputs (known as the codomain) where each input has exactly one output, and the output can be traced back to its input.
"y is a function of x" (denoted y = f(x)) means that y varies according to whatever value x takes on.
How to determine
Where F(x) = 2x^4 + x^2 - 10x + 1
So, to calculate f(-10)
f(x) = y
Where x = -10
f(-10) = 2(-10)^4 + (-10)^2 -10(-10) + 1
f(-10) = 2(10000) + 100 + 100 + 1
f(-10) = 20000 + 100 + 100 + 1
f(-10) = 20201
For f(2),
f(x) = y
Where x = 2
f(2) = 2(2)^4 +2^2 -10(2) + 1
f(2) = 2(16) + 4 -20 + 1
f(2) = 32 + 4 -20 + 1
f(2) = 17
For f(3)
f(x) = y
Where x = 3
f(3) = 2(3)^4 + 3^2 -10(3) + 1
f(3) = 2(81) + 9 -30 + 1
f(3) = 162 + 9 - 30 + 1
f(3) = 142
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Adam needs to build a shed and he can only use triangular frames that form a right triangle for the corner walls. Which of the following dimensions for a triangular frame should Adam use?
25 in., 60 in., 65 in.
40 in., 44 in., 58 in.
50 in., 110 in., 130 in.
130 in., 50 in., 60 in.
The only valid option for Adam is to use different dimensions that form a right triangle. The dimensions 40 in., 44 in., 58 in. are the closest valid set of dimensions.
What is a valid triangle?
A valid triangle is a three-sided polygon that satisfies the following conditions:
The sum of the lengths of any two sides of the triangle is greater than the length of the third side.
The lengths of all three sides of the triangle are greater than zero.
Adam should use the dimensions 40 in., 44 in., 58 in. for a triangular frame to form a right triangle.
To determine if a right triangle can be formed, we need to check if the Pythagorean theorem is satisfied, which states that the sum of the squares of the two shorter sides of a right triangle is equal to the square of the length of the longest side (the hypotenuse).
Let's check each set of dimensions:
For 25 in., 60 in., 65 in.:
25^2 + 60^2 = 625 + 3600 = 4225
65^2 = 4225
The Pythagorean theorem is satisfied, so a right triangle can be formed. However, this triangle is not a valid option for Adam because the lengths are too short for building walls.
For 40 in., 44 in., 58 in.:
40^2 + 44^2 = 1600 + 1936 = 3536
58^2 = 3364
The Pythagorean theorem is not satisfied, so a right triangle cannot be formed using these dimensions.
For 50 in., 110 in., 130 in.:
50^2 + 110^2 = 2500 + 12100 = 14600
130^2 = 16900
The Pythagorean theorem is satisfied, so a right triangle can be formed.
For 130 in., 50 in., 60 in.:
50^2 + 60^2 = 2500 + 3600 = 6100
130^2 = 16900
The Pythagorean theorem is satisfied, so a right triangle can be formed.
Out of the options given, only the dimensions 50 in., 110 in., 130 in. and 130 in., 50 in., 60 in. satisfy the Pythagorean theorem, but both are too large for building walls.
Therefore, the only valid option for Adam is to use different dimensions that form a right triangle. The dimensions 40 in., 44 in., 58 in. are the closest valid set of dimensions.
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2/5 x + 7 - 2/3x -15
Answer:
See below.
Step-by-step explanation:
We are asked to simplify the equation.
First, we should Combine Like Terms.
What is Combining Like Terms?
Combining Like Terms is adding terms that are alike.
For example, 4x and 11x are like terms since there's no differences than the coefficient, which can be different.
Let's combine like terms for this problem now.
Combine Like Terms:
[tex]\frac{2}{5} x+ 7 - \frac{2}{3} x -15\\\\\frac{2}{5} x - \frac{2}{3} x = \frac{6}{15} x - \frac{10}{15} x=-\frac{4}{15} x\\\\7 - 15 = -8[/tex]
We should have;
[tex]- \frac{4}{15} x - 8[/tex]
This will be our final answer.
The quality control manager at a computer manufacturing company believes that the mean life of a computer is 83 months, with a standard deviation of 9 months.
If he is correct, what is the probability that the mean of a sample of 78 computers would differ from the population mean by less than 0.4 months? Round your answer to four decimal places.
The probability that the mean of a sample of 78 computers would differ from the population mean by less than 0.4 months is:
P (μ-0.4 <x<μ +0.4) = P (-0.39<x<0.39) = 0.3035
What do you mean by probability?By simply dividing the favourable number of possibilities by the entire number of possible outcomes, the probability of an occurrence can be determined using the probability formula. Because the favourable number of outcomes can never exceed the entire number of outcomes, the chance of an event occurring might range from 0 to 1. Moreover, the proportion of positive outcomes cannot be negative.
Here we have,
μ = 83,0 = 9, n = 78
Since sample size is large so we can assume normal distribution using CLT.
The z-score for x= μ-0.4 is
z=(μ-0.4-μ)/o/√n
=-0.4/9/√78
= -0.39
The z-score for x= μ +0.4 is
z=(μ+0.4-μ)/σ/√n
= 0.4/9/√78
= 0.39
The probability that the mean of a sample of 78 computers would differ from the population mean by less than 0.4 months is:
P (μ-0.4 <x<μ +0.4) = P (-0.39<x<0.39) = 0.3035.
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I need help with number 1
Answer:
3,418.32yd³
Step-by-step explanation:
For volume you do the area (8)² multiplied by the height (17). 8 x 8 = 64. 64 x 17 = 1,088. you then multiply 1,088 by 3.14, the π, which is 3,416.32. We are using yards so the end result is 3,418.32yd³.
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Mrs. Walker's Period A and Period B Biology classes each grew a plant and recorded the heights, at various times, over a five week period. The graphs generated from this data are shown below.
C. During the observation period, period A's plant grew twice as quickly as period B's.
What is the significant use of graphs in real life?Graphs are a not unusual place technique to visually illustrate relationships withinside the statistics. The reason for a graph is to provide statistics that are too severe or complex to be defined appropriately withinside the textual content and in much less space.
Given, Mrs. Walker's Period A and Period B Biology classes each grew a plant and recorded the heights
from the graph. at the start of the observation period, Period A's plant was as tall as Period B's. So, A and B are wrong.
during the observation period, Period A's plant grew twice as quickly as Period B's.
C is right, and D is wrong
So, the answer is C.
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Complete question:
Use interval notation to express the following: The set of all numbers greater than −10 and less than −3.
the correct option is the first one (-10, -3)
All real numbers x falling inside this range are those such that
-10 < x < -3. The numbers -10 and -3 are not part of the set, as shown by the parentheses.
What is set?
In mathematics, a set is a logically arranged group of items that can be represented in either set-builder or roster form. Sets are typically denoted by curly brackets; for instance, A = 1, 2, 3, 4 is a set. Check the set symbols here as well. The way that sets are represented by a person is always the same: as a group of clearly defined objects or elements. A capital letter designates a set. The cardinal number of a set is the number of elements in the finite set. The number of elements in a set is determined by its order. It describes a set's size. Cardinality is another name for the set order.
From the question:
In interval notation, the set of all integers between -10 and -3 may be written as:
(-10, -3)
All real numbers x falling inside this range are those such that -10 <x <-3. The numbers -10 and -3 are not part of the set, as shown by the parentheses.
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complete question:
Match each equation on the left to the mathematical property it uses on the right.
(a) Commutative property of addition , (b) Distributive Property , (c) Associative Property of Multiplication , (d) Commutative property of multiplication and (e) Associative property of addition.
What is Associative Property ?
The associative property is a mathematical principle that states that the way in which factors are grouped in a multiplication or addition expression does not affect the final result. In other words, when using the associative property, we can add or multiply a group of numbers in any order we want, as long as we keep the order of the individual numbers the same.
(7 + 3) + 2 = 2 + (7 + 3) Commutative property of addition
3(2x +4) = 6x + 12 Distributive Property
(9 * x) * 3 = 9 * (x * 3) Associative Property of Multiplication
(8 * x * 2) = (8 * 2* x) Commutative property of multiplication
(4 + 5) + 1 = 4 + (5 + 1) Associative property of addition
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inverse trig ratio can someone pls answer the rest of these i don’t understand them answers are already there but i need to see how they are done
We're given the angle measure to be 46 for No. 8. The length of 1 leg is x and the hypotenuse is 28.
We can use cosine to solve this. Since cosine is adjacent over hypotenuse, we can do cos(46) = x/28. Cross multiply to get cos(46)*28 = x. That solves to be 19.5
Using this principle allows us to solve the other ones. I'll let you figure them out.
TLDR: We can use the definition of trig functions to plug in what we know and place variables where we don't have enough information to find the length of a side.
A race official needs to know how long it takes an average contestant to run an obstacle course. There are a total of 200 contestants. How can he find a reasonable estimate for the amount of time it takes to run the obstacle course?
A. Time any contestant on the course and use that time
B. Time himself on the course and use that time
C. Time 2 contestants and average their times
D. Time 20 contestants and average their times
The best option to find a reasonable estimate for the amount of time it takes to run the obstacle course among 200 contestants is to option D: Time 20 contestants and average their times.
Define reasonable estimate?A reasonable estimate is an approximation that is based on logical reasoning and information available, and it is within a reasonable margin of error. It is not expected to be precise, but it is expected to provide a fair idea of the value being estimated.
For example, estimating the cost of a renovation project within 5% of the actual cost would be considered a reasonable estimate.
By timing only one contestant, the time might not be representative of the entire group since individual performances can vary significantly. Timing the race official himself also won't give an accurate estimate since the official might not be a typical contestant in terms of speed and agility.
On the other hand, timing 2 contestants and averaging their times might not provide a big enough sample size to get a good estimate.By timing 20 contestants, there is a higher chance that the sample size will be representative of the entire group, and the average time will provide a more accurate estimate of the typical performance on the obstacle course.
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Calculate the probability that Cindy will get at least 48 orange Stattles in her next 14 ounce bag.
The probability is approximately 0.129
How to calculate the probability that Cindy will get at least 48 orange Stattles in her next 14 ounce bag.To calculate the probability that Cindy will get at least 48 orange Stattles in her next 14 ounce bag, we need to use the binomial probability formula:
P(X >= 48) = 1 - P(X < 48)
Where
X is the number of orange Stattles in a 14 ounce bag P(X < 48) is the probability of getting less than 48 orange Stattles in a 14 ounce bagTo calculate P(X < 48), we need to use the binomial probability formula:
P(X = x) = (nCx) * p^x * q^(n-x)
Where
n is the number of Stattles in a 14 ounce bag (we don't know this value)x is the number of orange Stattles in a 14 ounce bag (we want to find the probability of getting less than 48) p is the probability of getting an orange Stattle (0.4)q is the probability of getting a non-orange Stattle (0.6) nCx is the binomial coefficientnCx is the binomial coefficient, which can be calculated using the formula:
nCx = n! / (x! * (n-x)!)
where ! denotes the factorial function.
We can use a cumulative binomial distribution table or a binomial calculator to find the probability of getting less than 48 orange Stattles in a 14 ounce bag. For example, using an online calculator, we find that:
P(X < 48) = 0.871
Therefore, the probability that Cindy will get at least 48 orange Stattles in her next 14 ounce bag is:
P(X >= 48) = 1 - P(X < 48) = 1 - 0.871 = 0.129
So, the probability is approximately 0.129 or 12.9%.
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Find the largest angle of A PAM if m = 22in, p = 16in, a = 9in. Round to the nearest hundredth.
What would the hypotenuse have to be if the legs of a right triangle are 9 and 5?
Answer:
Roughly 10.30
Step-by-step explanation:
Use Pythagorean theorem:
[tex]c^2 = a^2 + b^2[/tex]
Where [tex]c[/tex] is your hypotenuse
So:
[tex]c^2 = (9)^2 + (5)^2[/tex]
[tex]c= \sqrt{106}[/tex]
[tex]c[/tex] ≈ [tex]10.30[/tex]
Answer:10.3
Step-by-step explanation:
n the first week of July, a record 1,120 people went to the local swimming pool. In the second week, 125 fewer people went to the pool than in the first week. In the third week, 145 more people went to the pool than in the second week. In the fourth week, 132 fewer people went to the pool than in the third week. What is the percent decrease in the number of people who went to the pool over these four weeks?
First, we need to find the number of people who went to the pool in the second, third, and fourth weeks.
Number of people in second week = 1,120 - 125 = 995
Number of people in third week = 995 + 145 = 1,140
Number of people in fourth week = 1,140 - 132 = 1,008
To find the percent decrease, we need to find the difference between the number of people in the first week and the fourth week, and then divide by the number of people in the first week.
Difference between first and fourth weeks = 1,120 - 1,008 = 112
Percent decrease = (112/1,120) x 100% = 10%
Therefore, the percent decrease in the number of people who went to the pool over these four weeks is 10%.
1. A cone has surface area 360*pi in² and volume 800*pi in³. The cone is dilated, and the surface area of the dilated cone is 2,250*pi in². What
is the dilated cone's volume? Round your answer to the nearest hundredth
The dilated cone's with surface area of 2,250π in^2 has a volume of about 12500π in³
What is dilation?Dilation is the increase or decrease in the size of a figure.
The cone has surface area 360π in² and volume 800π in^3. the cone is dilated, and the surface area of the dilated cone is 2,250π in^2.
Hence:
Scale factor² = dilated cone area / cone surface area
scale factor² = 2250π / 360π
Scale factor = 2.5
Volume of dilated cone = 2.5³ × 800π = 12500π in³
The dilated cone's with surface area of 2,250π in^2 has a volume of about 12500π in³
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place the four problem-solving steps in order
Since the sum of a triangle's internal angles is always 180 degrees, x has a value of 40 degrees.
what is triangle ?The polygonal shape of a triangle has three edges and three angles. It is one of the most fundamental and significant geometric shapes and is utilised in a wide range of mathematical, scientific, and engineering fields. The edges and angles of a triangle can be used to classify it in various ways. Triangles can be categorised in one way by their sides: Three equal sides make up an equilateral triangle. Two of the edges of an isosceles triangle are equal. Three of the edges of a scalene triangle are unequal.
given
The property of angles in a triangle, which says that the sum of a triangle's interior angles is always 180 degrees, can be used to determine the value of x in the given figure.
Triangle ABC consists of:
∠A + ∠B + ∠C = 180
Since we know that A = 50 degrees and B = 90 degrees, we can use these numbers as a substitute:
50 + 90 + ∠C = 180
When we simplify the solution, we obtain:
140 + ∠C = 180
140 from both sides is subtracted, giving us:
∠C = 40
Since the sum of a triangle's internal angles is always 180 degrees, x has a value of 40 degrees.
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Which statement is sometimes true? only one answer.
Question 2 options:
A square is a rhombus.
A trapezoid is a parallelogram.
A rectangle is a parallelogram.
A rectangle is a square.
Answer:
The statement that is sometimes true is C: A rectangle is a parallelogram.
Step-by-step explanation:
A parallelogram is a four-sided shape with opposite sides parallel. A rectangle is a specific type of parallelogram where all angles are right angles, and opposite sides have equal lengths. Therefore, a rectangle is considered a parallelogram. However, not all parallelograms are rectangles because other parallelograms may have angles that are not right angles.
The equation p=144b represents the number of pencils p in b boxes graph the relationship on the coordinate plane
Step-by-step explanation:
To graph the relationship between the number of pencils and the number of boxes, we can plot some points that satisfy the equation p = 144b.
We can choose any values of b and calculate the corresponding values of p using the equation. For example:
When b = 0, p = 144(0) = 0. So one point on the graph is (0, 0).
When b = 1, p = 144(1) = 144. So another point on the graph is (1, 144).
When b = 2, p = 144(2) = 288. So another point on the graph is (2, 288).
We can continue this process to find more points, or we can notice that the equation p = 144b represents a linear relationship between p and b with a slope of 144. This means that every time we increase b by 1, we increase p by 144.
We can use this information to graph the equation by starting at the y-intercept (0, 0) and then moving up 144 units for each unit we move to the right. This gives us a straight line with a slope of 144 passing through the origin.
The graph of the equation p = 144b looks like this:
|
| .
| .
| .
| .
| .
| .
| .
----------------------------------
0 1 2 3 4 b
The horizontal axis represents the number of boxes (b), and the vertical axis represents the number of pencils (p). Each dot on the graph represents a point that satisfies the equation p = 144b.
Based on the 2009 season, the Texas Rangers have a winning percentage of .533. Use the binomial model to find the probability that the Rangers win 4 of their next 5 games.
P(x)=[n!x!(n−x)!]pxqn−x
A. 12.4%
B.18.8%
C. 23.7%
D.50%
Based on the 2009 season, the Texas Rangers have a winning percentage of .533. The probability that the Rangers win 4 of their next 5 games is 18.8%.
How to find the probability?We can use the binomial distribution formula to find the probability that the Texas Rangers win exactly 4 of their next 5 games:
P(4 wins) = (5 choose 4) * (.533)^4 * (1-.533)^1
= (5! / (4! * 1!)) * (.533)^4 * (.467)^1
= 5 * 0.533^4 * 0.467^1
= 18.8%
where "choose" is the binomial coefficient, which represents the number of ways to choose a subset of size k from a set of size n, and is given by:
(n choose k) = n! / (k! * (n-k)!)
So the probability that the Rangers win 4 of their next 5 games is 18.8%,.
Therefore, the answer is B.
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45 cm
36 cm
38 cm
= the volume
bonjours
oui sa est égale au volume
Will is 22% taller than Wanda so willls height is what percent of wandas height
Answer:
Will is 122% of Wandas height.
Step-by-step explanation:
The perimeter of a rectangle is 100 cm. The length is 5 more than twice the width. What are the dimensions of the rectangle?
Answer:
in image...
if it helped please mark me a brainliest :))
can somebody help ASAP
Answer: 1176 in^2
Step-by-step explanation:
the surface area of a cube is given by 6a^2 where a is the length of one edge side. Replace a for 14 as given in the question and we get 6 . 14^2 = 6 . 196 = 1176. the units are in inches squared also written as in^2
Please help asap!!
Thank you
The requried it cannot conclude whether the variable is normally distributed or skewed based on the given data. None of the options are correct.
What is Statistic?The statistic is the study of mathematics that deals with relations between comprehensive data.
It is not possible to determine if the variable "footprint" is normally distributed or skewed based on the given data.
The data represents the measurements of shoe prints for 5 males, but it is not enough to determine the distribution of the variable without additional information such as a larger sample size, the mean and standard deviation of the variable, or a histogram or frequency plot of the data.
Therefore, we cannot conclude whether the variable is normally distributed or skewed based on the given data.
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(a+b)² + 4 (a+b) + 4
pls tell me how to do this
The factors of given expression are (a+b+2) and (a+b+2).
What is factorization?The factorization method uses basic factorization formula to reduce any algebraic or quadratic equation into its simpler form, where the equations are represented as the product of factors instead of expanding the brackets. The factors of any equation can be an integer, a variable, or an algebraic expression itself.
The given expression is (a+b)²+4(a+b)+4.
Here, take x=a+b
Now, x²+4x+4
= x²+2×2×x+4 (Algebraic identity (a+b)²=a²+2ab+b²)
= (x+2)²
= (a+b+2)²
= (a+b+2)(a+b+2)
Therefore, the factors are (a+b+2) and (a+b+2).
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A kite is shown below.
Find the size of angle BCD.
A
117°
B
55°
D
C
PLEASE DO IT
The value of x and y in the trapezium are 118 and 35 degrees respectively.
How to find angles in a trapezium?The diagram above is a trapezium. A trapezium is a quadrilateral with 4 sides. The sum of all the four angles of the trapezium is equal to 360°.
A trapezium has two parallel sides and two non-parallel sides.
Therefore, let's find x and y as follows:
x = 180 - 62(supplementary angles)
x = 118 degrees
y = 180 - 145(supplementary angles)
y = 35 degrees
Therefore,
x = 118 degrees
y = 35 degrees
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You and your friend just joined a gym. the gym fee for each member is a linear function of the number of classes that member participates in that month. you took 6 classes and paid $43 in gym fees. your friend took 11 classes and paid $73. what is the average rate of change in cost per class?
The gym fee increases by $6 for each additional class taken. The average rate of change in cost per class is equal to the slope of the linear function, which is $6 per class.
What is average rate ?
Average rate refers to the rate of change of a quantity over a given period of time. It is calculated by dividing the change in the quantity by the time period over which the change occurs.
To find the average rate of change in cost per class, we need to calculate the slope of the linear function that relates the gym fee to the number of classes taken.
Let x be the number of classes taken, and y be the gym fee. We can use the two data points given to find the equation of the line:
When x = 6, y = 43
When x = 11, y = 73
The slope of the line passing through these two points can be calculated as follows:
slope = (change in y) / (change in x)
slope = (73 - 43) / (11 - 6)
slope = 30 / 5
slope = 6
Therefore, the gym fee increases by $6 for each additional class taken.
The average rate of change in cost per class is equal to the slope of the linear function, which is $6 per class.
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Explain how you know 21/100 is greater then 1/5
Answer:
To compare two fractions, we need to make sure that they have the same denominator. In this case, we can convert 1/5 to an equivalent fraction with a denominator of 100 by multiplying both the numerator and denominator by 20:
1/5 = (1/5) x (20/20) = 20/100
Now we can compare 21/100 and 20/100. Since the numerator of 21/100 is greater than the numerator of 20/100, we know that 21/100 is greater than 20/100 or 1/5. Therefore, 21/100 is indeed greater than 1/5.
Step-by-step explanation:
Answer:
1/5 is equal 2/10 equals 20/
pls help me i need help
Answer:
77
Step-by-step explanation:
Bisects means that the angle is split in half perfectly thus if angle JKM is 154 then JKR is 154/2 = 77
Please help I’ll mark your answer brainliest!
The total amount of fencing change by 236.66 feet.
The average rate of change is 2.3666.
What is average rate of change?It quantifies how much the function changed per unit on average over that time interval. The slope of the straight line connecting the interval's ends on the function's graph is used to calculate it.
First, When width is 200 ft then
length = 19000/ 200 = 95 feet
and, When width is 300 ft then
length = 19000/ 300 = 63.33 feet
1) The amount of Fencing
= 3 x width + 2 x length
= 3 x 200 + 2 x 95
= 600 + 190
= 790 feet
2) The amount of Fencing
= 3 x width + 2 x length
= 3 x 300 + 2 x 63.33
= 900 + 126.66
= 1026.66 feet
So, the Change is
= 236.66 feet
Thus, the avreage rate of change
= 236.33/ (300- 200)
= 2.3666
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Evaluate the expression 1/3x2 For x=6
The solution of the evaluated expression, 1 / 3 x² for x = 6 is 12.
How to evaluate an expression?An expression is a combination of numbers, variables and operations such as addition, subtraction, multiplication, division etc.
To evaluate an expression means to find the value of the expression when the variable is replaced by a given number.
Therefore, let's evaluate the expression as follows:
1 / 3 x² for x = 6
Hence, let's substitute the value of x in the expression.
1 / 3 (6)² = 1 / 3 (36) = 12
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