The set that represents a Pythagorean Triple is given as follows:
C. 30,40,50
What is the Pythagorean Theorem?The Pythagorean Theorem states that for a right triangle, the length of the hypotenuse squared is equals to the sum of the squared lengths of the sides of the triangle.
For item c, we have that:
30² + 40² = 50²
900 + 1600 = 2500
2500 = 2500.
Which is a true statement, hence item c represents the Pythagorean Triple in the context of this problem.
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what are the coordinates of P?
(3,2) the eqaition would be y=3/2x+3
There are 150,000 households in Market City. A local phone repair shop takes a random sample of 50 households and finds that the average number of phones per household from the sample last year that needed to be repaired was 1.05 ± 0.23. Which of the following is an estimate of the total number of phones that needed repairing last year in Market City?
Between 82 and 128 phones
Between 123,000 and 192,000 phones
Between 105 and 23 phones
Between 157,500 and 34,500 phones
The correct answer is Between 157,500 and 968,187 phones.
Which of the following best describes the approximate number of phones in Market City ?The average number of phones per household from the sample from the previous year that required repair was 1.05 0.23. This suggests that the range for the genuine population mean () might be between 1.05 - 0.23 = 0.82 and 1.05 + 0.23 = 1.28 phones per home.Since the sample size was 50 households, the estimate of the total number of phones that needed repairing last year in Market City can be calculated as follows:Estimate = 50 * (1.05 + 1.05) / 2 = 52.5Estimate = 52.5 * 150,000 = 7,875,000Therefore, an estimate of the total number of phones in Market City that required repair last year ranges from 7,875,000 - 7,875,000 * 0.23 = 6,068,125 to 7,875,000 + 7,875,000 * 0.23 = 9,681,875 phones.Therefore, the correct answer is between 157,500 and 968,187 phones.To learn more about estimation refer:
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A dog is standing 5 feet from the base of a tree, looking up at a cat that has climbed 16 feet up the tree. What is the angle of elevation from the point the dog is standing on the ground to the cat?
Step-by-step explanation:
please see the attached fir details
The accessory choices of 143 people are recorded in the table. Please help!
For given frequency table the relative frequency table with percentage is given in image.
What is a frequency table ?
A frequency table consists of the lists of items in a given data set and the number of times each item occurs in the data set and The number of times a particular data value occurs in a given data set is referred to as its frequency.
e.g.
A, A, A, B, B, B, B, C, C, D
Count the number of times each grade occurs in the above series. Yes, ‘A’ occurs thrice, ‘B+’ occurs four times, ‘C’ occurs twice, and ‘D’ occurs once. Now, according to the definition of frequency, we can note the frequency of each grade as follows:
Frequency of A = 3
Frequency of B = 4
Frequency of C = 2
Frequency of D = 1
Let us list the grades obtained by the students in the above example, in a frequency table. Table is in image.
Now,
To find the percentage for relative frequency table we used (given value/Total people)*100.
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Given the function defined in the table below, find the average rate of change, in
simplest form, of the function over the interval 16 ≤ x ≤ 22.
x f(x)
4 10
10 19
16 28
22 37
28 46
Answer:
Step-by-step explanation:
a 6 foot-tall farmer wants to determine the height of his barn. he notices that his shadow is 10 feet long and his barn casts a shadow 75 feet long. how high is the barn?
By applying the proportional relationship formula, the height of the barn is 45 ft.
In a proportional relationship, each pair of data points is related in the same way, typically by multiplying them together. A proportionate relationship can be seen in a set of numbers, an equation, or a graphical representation. In this case, we are given that :
The height of the farmer (X1) = 6 ft
The height of the farmer’s shadow (Y1) = 10 ft
The height of the barn with farmer’s shadow (Y2) = 75 ft
To calculate the actual height of the barn (X2), we can use this following formula:
X1 : Y1 = X2 : Y2
6 : 10 = X2 : 75
X2 = (6 : 10) x 75
X2 = 45
Thus, the height of the barn is 45 ft
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Select the values that make the inequality - v <= - 8 true. Then write an equivalent inequality, in terms of v. ( Numbers written in order from least to greatest going across .)
Answer: To find the values that make the inequality -v <= -8 true, we can first isolate v on one side of the inequality. We do this by adding v to both sides:
-v <= -8
v >= 8
This inequality states that the only values that make it true are those greater than or equal to 8.
Another equivalent inequality in terms of v would be v>=8
So, the values that make the inequality -v <= -8 true are v >= 8
Step-by-step explanation:
Which is a correct solution for the following system of Inequalities
Correct option is A, (1,2) is the correct option for the given system of equations.
System of Equation -simultaneous equations, system of equations Two or more equations in algebra must be solved jointly (i.e., the solution must satisfy all the equations in the system).
The number of equations must match the number of unknowns for a system to have a singular solution.
A finite set of equations for which common solutions are sought is referred to in mathematics as a set of simultaneous equations, often known as a system of equations or an equation system.
A group of equations comprising one or more variables is known as a system of equations. The variable mappings that satisfy each component equation, or the points where all of these equations cross, are the solutions of systems of equations.
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if the slope of a line in the xy plane that passes through the points (1/2/, -1) and (2, b) is 8/3, what is the value of b?
The slope of a line in the xy plane b = 13/3
The slope of a line in the xy plane can be calculated by using the equation m = (y2-y1)/(x2-x1). In this equation, m is the slope, x1 and y1 are the coordinates of the first point, and x2 and y2 are the coordinates of the second point.
Using this formula, we can solve for b.
m = (y2 - y1) / (x2 - x1)
8/3 = (b - (-1)) / (2 - (1/2))
24/3 = (b + 1) / (5/2)
24/3 * (5/2) = (b + 1)
40/3 = b + 1
40/3 - 1 = b
b = 13/3
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Suppose a population consists of 4000 people. Which of the following
numbers of members of the population surveyed could result in a sample
statistic but not a parameter?
A. Both 40 and 4000
B. 40
C. 4000
D. Neither 40 nor 4000
A sample of size 40 is a valid sample size and could result in a sample statistic, as explained above, the correct answer is B.
What is the sample statistic?
A sample statistic is a measure calculated from a sample of the population, while a population parameter is a measure calculated from the entire population. Therefore, a sample statistic may differ from a population parameter due to sampling variability.
Out of the options provided, only option B (40) could result in a sample statistic but not a parameter.
This is because a sample of size 40 is a subset of the population, and a statistic calculated from this sample (such as the sample mean or sample proportion) would be a sample statistic.
Option C (4000) would result in both a sample statistic and a population parameter because a sample consisting of the entire population is a census, and any measure calculated from this sample would also be a parameter.
Option A (both 40 and 4000) and option D (neither 40 nor 4000) are not correct because 4000 is not a valid sample size, as it includes the entire population and would therefore be a census.
Hence, a sample of size 40 is a valid sample size and could result in a sample statistic, as explained above, the correct answer is B.
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I can’t figure this out. Which math expression means "52 more than an unknown number"?
O A. x- 52
• B. x+ 52
O C. 52 - x
• D. x = 52
Answer: B. x + 52
Step-by-step explanation:
The unknown number is represented as x.
The phrase "52 more than" means adding 52 to something
From this we can say that the expression is B. x + 52
URGENT!!
Which of the 3 graphs to the left best models the path
of a firework given it didn't explode?
Note: The path may be going in a different direction,
perhaps reflected or translated vertically or horizontally
while maintaining the same shape.
Linear
Quadratic
Exponential
Explain your thinking.
Answer:
Quadratic
Step-by-step explanation:
The path of a firework is modeled by a quadratic function. The firework ascends from point of launch with decreasing speed (negative acceleration due to gravity) until it reaches it maximum height and then starts dropping back to ground at increasing speeds due to positive acceleration exerted by the force of gravity.
The flight path of the parabola can thus be modeled by height as a function of elapsed time
h = f(t) where f(t) is a quadratic equation in t with the general form being
a · t² +b · t + c
We can easily eliminate the linear model since that implies the firework will ascend at a constant speed forever
The exponential model indicates that at the moment of launch the speed of the firework is constant and then it suddenly accelerates. However we know from observation that the firework has the highest speed at the moment of launch
Do not be confused by the shape of the graph - it seems to indicate the firework shoots down and up.
The note says:
Note: The path may be going in a different direction, perhaps reflected or translated vertically or horizontally while maintaining the same shape.
Indeed the actual path of the firework is a reflection of the graph about the x axis. so that it is a downward facing parabola. The vertex of the parabola is the highest y-value which is the maximum height the firework would reach.
The height would be the y axis and time t the x-axis
Mr. Garcia rents a car at a rate of $29.95 per day. There is an additional mileage charge of $20.00 per 100 miles or fraction of 100. If Mr. Garcia drives 550 miles in 5 days, which expression shows the total cost of Mr. Garcia’s trip?
In the given word problem, Mr. Garcia total paid $259.75 for his journey.
What are words problems?A word problem is a few sentences describing a 'real-life' scenario where a problem needs to be solved by way of a mathematical calculation.
Given that, Mr. Garcia rents a car at a rate of $29.95 per day. There is an additional mileage charge of $20.00 per 100 miles or fractions of 100, and Mr. Garcia drives 550 miles in 5 days,
Since, cost of 100 mile = $20
Therefore, cost for 1 mile = $0.2
Since, Mr. Garcia travelled for 550 miles,
Therefore, cost of 550 miles = $0.2 × 550 = $110
Since, cost for one day = $29.95
Therefore, cost for 5 days = $29.95 × 5 = $149.75
Now,
Mr. Garcia used the car for 5 days and travelled for 550,
Therefore, total cost he paid = $110 + $149.75
= $259.75
Hence, Mr. Garcia total paid $259.75 for his journey.
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Solve the system of equations x+3y=5 and -3x-2y=20 by combining the equations
On solving the linear equations x + 3y = 5 and -3x - 2y = 20, the value for x is x = -10 and the value of y is y = 5. When solved independently the value is obtained as -2x + y = 25.
What is a linear equation?
A linear equation is one that has a degree of 1 as its maximum value. No variable in a linear equation, thus, has an exponent greater than 1. A linear equation's graph will always be a straight line.
The first linear equation is - x + 3y = 5
The second linear equation is - -3x - 2y = 20
On evaluating individually the equation obtained is -
-3x - 2y + x + 3y = 20 + 5
-2x + y = 25
Multiply equation (1) with 3 -
3(x + 3y) = 5 × 3
3x + 9y = 15.....(3)
Adding equation (3) and (2) -
-3x - 2y + (3x + 9y) = 20 + 15
-3x - 2y + 3x + 9y = 35
-2y + 9y = 35
7y = 35
y = 35/7
y = 5
Substituting the value of y in equation (1) -
x + 3y = 5
x + 3(5) = 5
x + 15 = 5
x = 5 - 15
x = -10
Therefore, the value of x and y is -10 and 5 respectively.
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The Hcf of 2 numbers O and L is the number O itself .This can be only true if
The number O is the Hcf of the two numbers L and O. This is only possible if the number O is the highest common factor of the two.
Define the term HCF of the number?The highest number among all of the common factors of something like the given numbers is known as the HCF (Highest Common Factor) for two or more numbers.
The highest integer that divides both x and y is known as that of the HCF (Highest Common Factor) for two natural numbers, x and y. Let's use the numbers 18 and 27 to further grasp this definition. 1, 3, and 9 are the common variables between 18 and 27. 9 is the greatest (biggest) number among these. An HCF of 18 with 27 is therefore 9. The formula for this is HCF (18, 27) = 9.Similarly, for the given question.
The number O is the Hcf of the two numbers L and O. This is only possible if the number O is the highest common factor of the two.
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What is the weight (in grams) of a liquid that exactly fills a 182. 8 milliliter container if the density of the liquid is 0. 135 grams over milliliter ? Round to the nearest hundredth when necessary and only enter numerical values, which can include a decimal point
Liquid with density 0.135 grams over milliliter and volume 182.8 milliliter has weight equal to 24.68 grams.
Let 'm' represents the weight in grams of a liquid
Volume 'V' of the container to fill a liquid is = 182.8milliliter
Density 'ρ' of the given liquid is 0.135 grams over milliliter
Density = mass / Volume
Substitute the values we get,
⇒ 0.135 = m / 182.8 ×
⇒ m = 0.135 grams over milliliter × 182.8milliliter
⇒ m = 24.678 grams
⇒ m = 24.68 grams
Therefore, the weight of a liquid for the given density and the volume is equal to 24.68 grams.
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Which expression is equivalent to
P
O 16/45
O√√25
02
04
4
54
4
4112
112
?
The answer is 4^2. Step-by-step explanation: This is because 4 squared is 4*4 which equals 16.
by solving simultaneous equations work out the coordinates of the point where the two lines below intersect. 3x+y=11 and y=4x-3
The point where the two lines intersect each other is (2,5).
What are simultaneous equations?
Two or more algebraic equations that share variables, such as x and y, are said to be simultaneous equations. Since the equations are solved simultaneously, they are known as simultaneous equations. These equations alone could have an endless number of solutions.
When two lines intersect each other, the point of intersection is a point common to both lines.
This can be found by solving simultaneous equations.
The given equations of the two lines are
3x+y = 11
4x-y = 3
Adding the above equations, we can remove the y variable.
The result is 7x = 14
x = 2
Now we substitute this value of x in either of the above equations to get the value of y.
3 * 2 + y = 11
y = 11 -6 = 5
Therefore the point where the two lines intersect each other is (2,5).
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what percentage of the trees have a height less than 75 feet? (round your answer to 2 decimal places.)
When using percent slope to get tree height, the tree is the rise, and the horizontal distance from the tree with the ground is the run. We can simply measure our horizontal distance from the tree, and we have instruments for gauging the percent slope to the top of a tree.
Hence, with those two measures (run and %slope) we can solve for rise.
You Total up all the trees.
let the average of number of trees are:
3+3+8+10+5+2=31
then you subtract the amount of trees under 75 feet in height.
31-8-3-3=14
divide the number of trees 14 under 75 ft in height by the total amount of trees31.
14/31=0.4516
0.4516=45.2
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Mike saves $2,000 at a yearly simple interest rate of 2%, he earns $280 in interest for how many years did he save this money
The number of years that he save this money is 7 years
What is simple interest?Simple interest is a method of calculating the interest charge. Simple interest can be calculated as the product of principal amount, rate and time period.
Simple Interest = (Principal × Rate × Time) / 100
Where P is the principal, R is the rate of interest, and T is the time.
Given;
Mike saves $2,000 at a yearly simple interest rate of 2%;
Money he earns in interest= $280
Then the number of years;
$280 = ($2,000 x 2 x T) / 100
$28,000 = $4,000 x T
T = $28,000 / $4,000
T = 7 years
Therefore, numbers of years mike has to pay interest will be 7
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Mrs. Byrne mowed 1 4 of her lawn. Her son mowed 2 7 of it. Who mowed most of the lawn? How much of the lawn still needs to be mowed?
Mrs. Byrne mowed 1/4 of her lawn. Her son mowed 2/7 of it. Mrs. Byrne mowed most of the lawn. The lawn still needs to be mowed is 13/28.
Mrs. Byrne mowed of his lawn = 2/7
Her son mowed of his lawn = 1/4
We firstly equal the denominator of both fraction by taking the LCM of both numbers.
The LCM of 7 and 4 is 28.
So we multiply and divide by 4 in the fraction 2/7 and by 7 in fraction 1/4. Now,
Mrs. Byrne mowed of his lawn = 2/7 × 4/4 = 8/28
Her son mowed of his lawn = 1/4 × 7/7 = 7/28
Now we compare the both fraction 8/28 and 7/28. The 8/28 is greater than 7/28. So we can say that Mrs. Byrne mowed most of his lawn.
The total lawn is 28/28.
So, the remaining lawn for mowed = 28/28 - (8/28 + 7/28)
The remaining lawn for mowed = 28/28 - (8 + 7)/28
The remaining lawn for mowed = 28/28 - 15/28
The remaining lawn for mowed = (28 - 15)/28
The remaining lawn for mowed = 13/28
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The complete question is:
Mrs. Byrne mowed 2/7 of his lawn. Her son mowed 1/4 of it. Who mowed most? How much of the lawn still needs to be mowed?
There are 9,075 trees in Memorial Park. If there are 726 trees per acre, there are ___ acres in the park.
Answer:
Step-by-step explanation:
A new iphone costs $799 and is estimated to lose 25% of its value every six months after its purchase, what is the value of the phone after 2 years?
If a new I phone costs $799 and is estimated to lose 25% of its value every six months after its purchase ,then the value of phone after 2 years is $253 .
The cost of new i phone is = $799 ;
the percent loss in the value after every 6 month is = 25% = 0.25 ;
in 2 years , there are 4 period of six months , so , n = 4 ;
The depreciated value of i phone can be calculated by formula ;
⇒ Value = Cost × (1 - 0.25)ⁿ ;
Substituting value of n =4 and cost = $799 ;
⇒ Value = 799 × (1 - 0.25)⁴ ;
⇒ Value = 799 × (0.75)⁴ ;
⇒ Value = 799 × (0.75)⁴ ;
⇒ Value = 799 × 0.31640625 = 252.8085 ≈ 253 .
Therefore , the value of the phone after 2 years is $253 .
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a statistics professor asked students in a class their ages. based on this information, the professor states that the average age of students in the university is 21 years. this is an example of .
The problem where the professor states that the average age of students in the university is 21 years is an example of statistical inference.
Statistical inference is the process of using data from a sample to make inferences or conclusions about a population. It allows us to draw conclusions about a larger group of individuals or objects based on information from a smaller sample. It is a fundamental part of statistical analysis and is used in many fields, including research, business, and government.
Statistical inference includes two main types: estimation and hypothesis testing.
Estimation: This involves using sample data to make estimates about population parameters. For example, using the sample mean to estimate the population mean or the sample proportion to estimate the population proportion.
Hypothesis testing: This involves using sample data to test a claim or hypothesis about a population parameter. For example, testing the claim that a coin is fair, based on the proportion of heads in a sample of coin flips.
The goal of statistical inference is to use the information from a sample to make informed decisions or predictions about a population. It allows us to draw general conclusions from a specific set of data, and it is an essential tool for making sense of data in many fields.
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The amount of snowfall in January was 11
1/1/20
Write your answer as a mixed number in simplest form.
feet
feet. The amount of snowfall in December was 5-
5²24
feet. How much more snowfall was there in December?
0
The mixed fraction in the simplest form is 21/20, and the snowfall in December was almost 5 times more than the snowfall in January.
What are mixed fractions?A mixed fraction is one that is represented by both its quotient and remainder. A mixed fraction is, for instance, 2 1/3, where 2 seems to be the quotient and 1 is the remainder. An amalgam of a whole integer and a legal fraction is a mixed fraction.
Given that the amount of snowfall in January was:
[tex]1 \frac{1}{20}[/tex]
To convert the mixed fraction to simplest form, multiply the denominator with the value and add it to the numerator:
[tex]21/20 = 1.05[/tex]
The amount of snowfall in December is:
[tex]5 \frac{2}{24} = 5 \frac{1}{12}[/tex]
To convert the mixed fraction to simplest form, multiply the denominator with the value and add it to the numerator:
[tex]\frac{61}{12} = 5.08[/tex]
Hence, the snowfall in December was almost 5 times more than the snowfall in January.
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HELP ASAP!! GIVING 50 POINTS!!
PLEASE SHOW WORK!
for any value of n, the nth term of the equation will be:
Aₙ = -3* 2ⁿ⁻¹
What is the geometric sequence?A geometric sequence is a sequence of numbers that follows a pattern where the next term is found by multiplying by a constant called the common ratio, r.
From the general formula of the nth term of the geometric sequence:
Aₙ = A₁* rⁿ-1
Given a geometric sequence:
-3, -6, -12, 24,.....
From the general formula of the nth term of the geometric sequence:
Aₙ = A₁* rⁿ⁻¹
in our case
a₁ = -3
ratio(r) = -6/-3 = 2
Thus for any value of n, the nth term of the equation will be
Aₙ = -3* 2ⁿ⁻¹
For instance,
8th term of the given sequence:
A₈ = -3* 2⁸⁻¹
A₈ = -3* 2⁷
A₈ = -384
Therefore, for any value of n, the nth term of the equation will be
Aₙ = -3* 2ⁿ⁻¹
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2/5 meter= how many centimeters
Answer: 40 cm
Step-by-step explanation: 2/5 x 100 =
200/5 = 40
Rewrite the following without an exponent.
(2/3) ^-1
The expression of (²/₃)⁻¹ without an exponent is given as;
3/2
How to use Laws of exponents?The different laws of exponents are;
1) Power Law of Exponents which is expressed as; (x^m)ⁿ = x^(mn)
2) Quotient Law of Exponents is expressed as; x^m ÷ x^n = x^(m - n)
3) Product Law of Exponents is expressed as; x^(m) * x^(n) = x^(m + n)
4) Law of Reciprocal is expressed as; a⁻ⁿ = 1/aⁿ
Now, we want to rewrite the expression (²/₃)⁻¹ without using an exponent.
From the law of reciprocal of exponents we can say that;
(²/₃)⁻¹ = 1/(²/₃)
= 3/2
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(e) (i) Using a scale of 2cm to represent 5 units on each axes, show, by shading the unwanted regions, the set of points satisfying the three inequalities in parts (b), (c) and (d). [3] (ii) Calculate the maximum number of rabbits the farmer can buy. [2]
Answer: (e) (i) To represent the inequalities graphically on a coordinate plane, you can use a scale of 2cm to represent 5 units on each axis. To shade the unwanted regions, you can start by drawing the coordinate plane and labeling the x and y axes. Then, you can graph the inequalities by plotting the lines and shading the regions that do not satisfy the inequalities.
(b) 2x + 3y ≤ 30
This inequality represents a line with the equation 2x + 3y = 30. You can graph this line by plotting a few points and then drawing a straight line through them. The points that are on or below the line satisfy the inequality.
(c) x - 2y ≥ -10
This inequality represents a line with the equation x - 2y = -10. You can graph this line by plotting a few points and then drawing a straight line through them. The points that are on or above the line satisfy the inequality.
(d) y ≤ -2x + 10
This inequality represents a line with the equation y = -2x + 10. You can graph this line by plotting a few points and then drawing a straight line through them. The points that are on or below the line satisfy the inequality.
The set of points that satisfy all three inequalities is the area that is not shaded in the graph.
(ii) To find the maximum number of rabbits the farmer can buy, we need to find the coordinates of the vertex of the feasible region.
The coordinates of the vertex of the feasible region is (x,y) the point where the line 2x+3y=30 and x-2y=-10 intersects.
We can substitute the x-2y=-10 into the 2x+3y=30 equation
2x+3y=30
2x+3y+2y=-10
2x+5y=-10
x=-5y+10
substituting this into one of the equation we have
2(-5y+10)+3y=30
-10y+20+3y=30
-7y=10
y= -10/7
substituting this into x = -5y+10 we have
x = -5(-10/7)+10 = 15
the maximum number of rabbits the farmer can buy is 15
Step-by-step explanation:
The table shows information about the lengths of time, in minutes, it took some
pupils to do their maths homework last week.
Frequency
Length of time (1)
0
5
10
24
25
12
30
8
2
Draw a histogram for
the information in the table.
Frequency density
0+
10
20
30
Length of time (1)
40
50
The graphic representation of data points arranged into user-specified ranges is called a histogram. The diagram below that is attached shows the histogram diagram.
A histogram is a figure made up of rectangles with widths equal to the class interval and areas proportionate to the frequency of a variable.
From the given information, we have the following:
Length of time (t) Frequency
0 ≤ t < 10 5
10 ≤ t < 25 24
25 ≤ t < 30 12
30 ≤ t < 50 8
So, the image that is attached shows how the table is represented in a histogram.
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The complete question is given below: