Answer:
c
Step-by-step explanation:
Answer:
B
Step-by-step explanation:
Mrs. Bergstedt teaches four classes. Each class has 15 students. Her first class has 9 juniors, her second class has 12 juniors, her third class has 6 juniors, and her fourth class has 3 juniors. If Mrs. Bergstedt chooses four students at random, what is the probability that exactly two of the students are juniors (rounded to the nearest thousandth)?
The probability that exactly two of the students are juniors is given as follows:
0.270 = 27%.
What is the hypergeometric distribution formula?The mass probability formula is presented as follows:
[tex]P(X = x) = h(x,N,n,k) = \frac{C_{k,x}C_{N-k,n-x}}{C_{N,n}}[/tex]
[tex]C_{n,x} = \frac{n!}{x!(n-x)!}[/tex]
The parameters are:
x is the number of successes.N is the size of the population.n is the size of the sample.k is the total number of desired outcomes.The values of these parameters for this problem are given as follows:
[tex]N = 60, n = 4, k = 18[/tex]
Hence the probability that exactly two of the students are juniors is calculated as follows:
[tex]P(X = x) = h(x,N,n,k) = \frac{C_{k,x}C_{N-k,n-x}}{C_{N,n}}[/tex]
[tex]P(X = 2) = h(2,60,4,18) = \frac{C_{18,2}C_{42,2}}{C_{60,4}} = 0.270[/tex]
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What is the mean deviation of 2 4 6 8 10?
When the mean is 6, the mean deviation of a given collection of data is 2.4.
What is mean deviation?The deviation is a metric used in statistics and mathematics to discover the difference between the actual and predicted values of a variable. The deviation is just the distance from the central point. The mean deviation is a statistical metric that computes the average departure from the mean value of a given data collection. Using the following approach, you can simply determine the mean deviation of the data values. We categorize the data and describe the frequency distribution of each group to provide it in a more concise way. These are referred to as class intervals.
Here,
To find out the mean deviation, just follow the steps given below.
Step 1: Find the mean for the given set of values
Step 2: Find the distance. (i.e) Subtract the mean value from each given values, and ignore minus symbol if any
Step 3: Finally, find the mean of the obtained distance, which is called the mean deviation.
=(2+4+6+8+10)/5
=6
mean deviation,
=(4+2+0+2+4)/5
=2.4
The mean deviation of given set of values is 2.4 when mean is 6.
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A nutritionist collects data from 25 popular breakfast cereals. For each cereal, the number of calories per serving is plotted on the x-axis against the number of milligrams of sodium on the y-axis. The value of r for the resulting scatterplot is 0. 83. How would the value of the correlation coefficient, r, change if sodium was plotted on the x-axis and calories plotted on the y-axis?.
Answer: The answer is B
Step-by-step explanation:
Answer:
Step-by-step explanation:
**What is the value of x in the function
p(x) = 9x - 2 such that p(x) = -3?
Answer:
(D) 1/9
Step-by-step explanation:
9x-2=-3
9x=1
x=1/9
7.2.C1 Which Of The Following Are Statistics? O2/N
The symbol that represents an expression in statistics are That is option A , B and C.
What is statistics?Statistics is defined as the area of study that is concerned with the collection, organization, analysis, interpretation, and presentation of data.
The importance of statistics is that it helps in conducting research, evaluating results, developing critical thinking and making informed decisions.
The various symbols use in statistics include the following:
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What are the factors of 2x² 7x 15 *?
The factors of 2x² - 7x - 15 are (2x + 3) and (x - 5).
What are the factors of 2x² - 7x - 15?By splitting the middle term and factoring the polynomial,
2x² - 7x - 15
= 2x² - 10x + 3x - 15
= 2x(x - 5) + 3(x - 5)
= (2x + 3)(x - 5)
The factors of 2x² - 7x - 15 are (2x + 3) and (x - 5).
What is factoring?By searching for factors, factoring is the process of attempting to make a mathematical expression resemble a multiplication problem.In essence, factoring is the multiplication process in reverse. It is possible to factor both numerical and algebraic expressions using a specific technique.Finding two integers to multiply to obtain another number can be as simple as factoring. You might also seek out a number's prime factorization when factoring.Of course, numerical expressions are the easiest to factor.A number or other mathematical object is factored when it is written as the product of numerous factors, typically smaller or simpler counterparts of the same kind.To learn more about polynomial, refer:
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How do you find a unit rate? For example, $1.40 for 4 apples. Please help.
Answer:5.6
Step-by-step explanation:
Answer: $1.40/4 = $0.35/apple
You and your family are visiting some attractions while on vacation. You and your mom visit the shopping mall while your dad and your sister visit the aquarium . You decide to meet at the intersection of lines and p Each unit in the coordinate plane corresponds to 50 yards .
The lines p and q are perpendicular in the coordinate plane.
What is meant by coordinate plane?The name of the other number line, which is a vertical one, is called the y-axis. To graph points, lines, and other objects, one can utilize the coordinate plane. A pair of numerical coordinates that uniquely identify each point in a Cartesian coordinate system in a plane are called the coordinates. These numerical coordinates are signed length measurements that represent the separations between two fixed perpendicular oriented lines and the point.
Let the equation of the line is:
y-y'=m₁(x-x')
m₁=2/6
m₁=1/3
Therefore, the equation of a line with the point (3, 4) and slope m₁=1/3
y-4=(1/3)(x-3)
y=(1/3)x-1+4
y=(1/3)x+3
And m₂= -3
The line equation that is passing through (2,7) and m₂= -3
y-7=(-3)(x-2)
y-7= -3x+6
y= -3x+13
m₁×m₂= -1
(1/3)(-3)= -1
So, the lines that are given in the coordinate plane p and q are perpendicular.
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Where is the 60 degree parallel?
The parallel marks the northern limit of the Southern Ocean (though some organisations and countries, notably Australia, have other definitions) and of the Antarctic Treaty System.
Parallel lines are straight lines that never meet each other no matter how long we extend them
Parallel lines are any two or more lines that all lie in the same plane and never cross one another. They are equally spaced apart and have the same incline.
Numerous pairs of angles are created when a transversal line intersects any two parallel lines. While some angles are additional, others are congruent (equal).
The fundamental characteristics listed below make it simple to recognise parallel lines.
Parallel lines are defined as straight lines that are always the same distance apart.
No matter how far apart they are from one another, parallel lines can never intersect.
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Simplify the polynomial and evaluate for the following values.
x²yxy-xy²xy +xy if x = −3 and y=2
Answer:
1/ simplify polynomial is x^3 y^2 - x^2 y^3 + xy
2/ Answer is -86
Step-by-step explanation:
x²yxy-xy²xy +xy
Simplify each term, and I get
x^3 y^2 - x^2 y^3 + xy
I may be wrong!
Now let's put -3 in for x and 2 in y and evaluate
(-3)^3 (2)^2 - (-3)^2 (2)^3 + (-3 times 2)
(27) (4) - (9) (8) - 6
-86
I may be wrong, but I tried my best to help you since this question has been on for a long time, but no one answered. If I am wrong, I am sorry!
Josh tells Greg that the temperature where he lives is currently 77°F. Greg tells Josh that the temperature where he lives is currently 30°C. Josh says it is warmer where he lives, and Greg says it is warmer where he lives. Who is correct? Explain your reasoning
Answer:
Greg is correct
Step-by-step explanation:
To determine which of them is experiencing warmer weather, you need to compare the temperatures in the same unit of measurement. 77°F is equivalent to 25°C, while 30°C is equivalent to 86°F. Therefore, Greg is experiencing warmer weather than Josh.
The difference in the temperatures they reported is due to the fact that they are using different temperature scales. The Fahrenheit scale is used in the United States, while the Celsius scale is used in most other countries. The two scales are related by the equation:
C = (F - 32) / 1.8
To convert from Fahrenheit to Celsius, you can use this equation to determine the temperature in Celsius. To convert from Celsius to Fahrenheit, you can use the equation:
F = C * 1.8 + 32
Using these equations, you can compare temperatures in different scales to determine which is warmer.
How do you write greater than 20?
We will write greater than 20 using Inequality sign as ( > 20).
The first number in every inequality sign tells us how the first and second numbers relate to one another, so > 20 means "A number is greater than 20."
In mathematics, "inequality" refers to a relationship between two expressions or values that are not equal to one another.
Greater than and less than symbols are used to indicate whether one number is greater than or less than another. The greater than symbol (>) is used when the first number exceeds the second number. The less than symbol (<) is used when the first number is less than the second number.
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What is the multiplicity of 5?
The multiplicity of a number is the number of times a number is a factor of another number.
In general, the multiplicity of a number can be determined by dividing the number by the factor. If the result is a whole number, then the multiplicity of the factor is equal to the result of the division. If the result is a decimal or fraction, then the multiplicity of the factor is 0.
For example, if we wanted to find the multiplicity of 5 in 25, we would divide 25 by 5: 25/5 = 5. This means that the multiplicity of 5 in 25 is 5.
The multiplicity of 5 can also be determined by finding the prime factorization of the number. For example, if we wanted to find the multiplicity of 5 in 30, we would factorize 30: 30 = 2 x 3 x 5. This means that the multiplicity of 5 in 30 is 1, because there is only one 5 in the prime factorization of 30.
In summary, the multiplicity of a number is the number of times a number is a factor of another number. The multiplicity of a number can be found by dividing the number by the factor, or by finding the prime factorization of the number.
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Removing which ordered pair from the table would make the relation a function of x? x y 1 7 4 7 2 2 4 1 3 9.
You can see that x=4 takes two different values y=7 and y=1. You should remove one of these ordered pairs (4,7) or (4,1).
What are the 4 types of function?
There are 4 types of functions:
Functions with arguments and return values. This function has arguments and returns a value: ...
Functions with arguments and without return values. ...
Functions without arguments and with return values. ...
Functions without arguments and without return values.
A function is a relation that for each input value x takes the unique value of output y.
Consider the table
x y
1 7
4 7
2 2
4 1
3 9
You can see that x=4 takes two different values y=7 and y=1. You should remove one of these ordered pairs (4,7) or (4,1).
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Omar studies the effects of a drought on the depth of water in a pond. He takes a reading of the water depth at the same location in the pond every day for the duration of the drought. Which method of displaying data would he most likely use to show changes in water depth?.
Omar would most likely use a line graph to show changes in water depth. A line graph would allow him to plot the water depth readings against a timeline and visualize how the depth changes over the duration of the drought.
A line graph is the most appropriate method of displaying data to show changes in water depth over the duration of the drought. A line graph is a type of chart that plots data points on a two-dimensional coordinate system. It is used to show how one set of data changes over a period of time. Omar would plot the water depth readings along the vertical y-axis and the days of the drought along the horizontal x-axis. A line would then be drawn to connect the data points, depicting the changes in water depth over the period of the drought. Additionally, the data points can also be labeled to provide more detailed information about the water depth readings at each point. This would allow Omar to compare the readings over time and monitor the effects of the drought on the water depth.
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what is the conjugate of [tex]x+\sqrt{y}[/tex]
By using the concept of conjugate, it can be calculated that
Conjugate of [tex]x + \sqrt{y}[/tex] is [tex]x - \sqrt{y}[/tex]
What is conjugate?
Conjugating is the process of changing a verb in a sentence to match the person, number, gender, tense, mood, and voice of the subject. For example, the verb "to walk" changes to "walked" when conjugated in the past tense. Conjugation is important in many languages, including English, as it helps to make communication more precise. Conjugation involves making changes to the base form of the verb, such as adding suffixes or prefixes, or changing the spelling of the word. Different languages have different rules for conjugating verbs, so it is important to understand the language’s system of conjugation before attempting to use it.
Here the expression is [tex]x + \sqrt{y}[/tex]
Conjugate of [tex]x + \sqrt{y}[/tex] is [tex]x - \sqrt{y}[/tex]
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How do you write 8 or more?
We can write '8 or more' as [tex]\geq 8[/tex], using the greater-than equal to sign.
The greater-than sign is a mathematical symbol that denotes an inequality between two values. The widely adopted form of two equal-length strokes connecting in an acute angle at the right, >, has been found in documents dated as far back as 1631. In mathematical writing, the greater-than sign is typically placed between two values being compared and signifies that the first number is greater than the second number.
Examples of typical usage include 1.5 > 1 and 1 > −2. The less-than sign and greater-than sign always "point" to the smaller number. Since the development of computer programming languages, the greater-than sign and the less-than sign have been repurposed for a range of uses and operations.
Here, we can use an alternate to the 'greater-than' symbol: a 'greater-than equal to' symbol, denoted as ≥.
Using this, we can write:
[tex]\geq[/tex] 8, denotes a number greater-than or equal to 8.
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7. What is the converse of the following conditional statement?
If x= 12, then 2x - 5 = 19.
O
O
If x= 12, then 2x - 5 < 19.
If 2x - 519, then x = 12.
If 2x - 5 = 19, then x = 12.
If the value x =12 then 2x - 5 = 19 the statement is true if 2x -5 = 19 then x = 12. The correct options are A and D.
What is an expression?The mathematical expression combines numerical variables and operations denoted by addition, subtraction, multiplication, and division signs.
Mathematical symbols can be used to represent numbers (constants), variables, operations, functions, brackets, punctuation, and grouping. They can also denote the logical syntax's operation order and other properties.
Given that the statements are:-
x = 12, then 2x - 5 = 19.
2x - 5 = 19
(2 x 12 ) - 5 = 19
24 - 5 = 19
19 = 19
If 2x - 5 = 19, then x = 12. The value of x will be calculated as,
2x - 5 = 19
2x = 19 + 5
2x = 24
x = 24 / 2
x = 12
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What's the mode of data?
A mode is defined as the value that has a higher frequency in a given set of values. It is the value that appears the most number of times.
In statistics, the value that consistently appears in a particular collection is referred to as the mode. The mode or modal value in a data collection is sometimes referred to as the value or number that occurs most frequently in the data set. In addition, to mean and median, it is one of the three measures of central tendency.
For example, the mode of the set {3, 7, 8, 8, 9}, is 8. Therefore, for a finite number of observations, we can easily find the mode. A set of values may have one mode or more than one mode or no mode at all.
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Hannah adjusts photos in her digital
scrapbook. She translates the photo to the
left. Then she dilates the image using a scale
factor of 2 and a center of dilation at the
origin. Hannah thinks the original photo is
congruent and similar to the final image.
Is she correct? Explain your reasoning.
Hannah's thought that the original photo is congruent and similar to the final image is false
How to determine if the statement is correctFrom the question, we have the following parameters that can be used in our computation:
She translates the photo to the left. She dilates the image using a scale factor of 2Translation creates congruent and similar shapes
However, dilation only create similar shapes, but not congruent shapes
This means that the shapes are similar, but not congruent
Hence. Hannah is incorrect
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What is the mean of the modes of the given set of numbers 54 55 55 55 56 57 57 57 58 and 59?
56.6 years is the mean of the modes of the given set of numbers.
What are the mean, median, and example?
The most frequent number, or the one that happens the most frequently, is known as the mode.
Example: Since the number 2 appears three times, more than any other number, it is the mode of the numbers 4, 2, 4, 3, and 2.
The mean is calculated by adding together all the values
= (54+54+54+55+56+57+57+58+58+60+60
= 623
= 56.6 years.
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The point (2, -3) is the midpoint of segment JK .
Point K is located at (-6, -3).
What is the length of segment JK ?
The required length of line segment JK would be 16 units.
The midpoint of a line segment is the point that divides the line segment into two equal parts. So, to find the length of the line segment JK, we can first find the coordinates of point J, which is the other endpoint of the line segment.
Let the coordinate of the point J would be (x, y)
Since the midpoint of the line segment is (2, -3), and point K is located at (-6, -3), we can use the midpoint formula to find the coordinates of point J:
2 = (x+(-6))/2 ; -3 = (y+(-3))/2
4 = x - 6 ; -6 = y -3
x = 10 ; y = -3
So the coordinate of the point J :(10, -3)
Now that we have the coordinates of both endpoints of the line segment, we can use the distance formula to find the length of the line segment:
length = √((10 - (-6))² + (-3 - (-3))²)
= √((10 + 6)² + (-3 + 3)²)
= √(16² + 0)
= √(256)
= 16
Therefore, the length of line segment JK is 16 units.
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please help me with this.
Answer:
55°75°55°15°Step-by-step explanation:
You want the measures of the numbered angles in the figure comprised of overlapping right triangles.
Complementary anglesThe acute angles in a right triangle are complementary, as are the two angles into which a right angle is divided.
∠1 +35° = 90° ⇒ ∠1 = 55°
∠3 +35° = 90° ⇒ ∠3 = 55°
Exterior angleThe angle marked 70° is exterior to the bottom right triangle, so is equal to the sum of angles 3 and 4.
∠3 +∠4 = 70°
55° +∠4 = 70° ⇒ ∠4 = 15°
Angle 2 is the other acute angle in the bottom right triangle, so ...
∠2 = 90° -∠4 = 90° -15°
∠2 = 75°
The following figure shows the entire graph
of a relationship.
Does the graph represent a function?
Lydia owns. Good truck that sells tacos and burritos. She only has enough supplies to make 115 tacos or burritos. She sells each taco for $4 and each burrito for $6.75. Lydia must sell at least $680 worth of tacos and burritos each day. If tacos were sold, determine the minimum number of burritos that Lydia must sell in order to meet the requirements.
Answer and Step-by-step explanation:
Lydia must sell at least $680 worth of tacos and burritos each day, and she only has enough supplies to make 115 tacos or burritos. If she sells each taco for $4, then she can make a maximum of 115 tacos * $4/taco = $<<115*4=460>>460 by selling tacos.
Therefore, in order to make at least $680, Lydia must sell burritos in addition to the tacos. The minimum number of burritos she must sell in order to make at least $680 is $680 - $460 = $<<680-460=220>>220.
Since Lydia sells each burrito for $6.75, she must sell at least $220 / $6.75/burrito = <<220/6.75=32.5>>32.5 burritos to make at least $680. Since she only has enough supplies to make 115 tacos or burritos, and she has already accounted for 115 tacos, she must sell a minimum of 32.5 burritos to meet the requirements.
Write a fraction in
which the numerator and the
denominator have 1, 2, 4, and 8 as
common factors. Then write the
fraction in simplest form.
For each of the following, define variables, write a system, and solve the system
algebraically:
a) An organization is holding a banquet in honor of its member of the year. Tables and
chairs must be rented in order to seat all the guests. A large table seats 12 and costs
$50. A small table seats 8 and costs $25. How many of each type of table must be
rented to seat 100 guests for $350?
b) The jazz band and choir are attending a concert. The jazz band bought 16 student tickets and 3
adult tickets for $110.50. The choir bought 12 student tickets and 4 adult tickets for $96. Find the
cost of each type of ticket
(i) Large Table Required are 3 and Small Table required are 8
(ii) Price of Student Ticket is $5.5 and Adult Ticket is $7.5
What is Linear Equation in Two Variable?
A linear equation in two variables is one that is stated in the form ax + by + c = 0, where a, b, and c are real integers and the coefficients of x and y, i.e. a and b, are not equal to zero.
Solution:
(i)
Seats in Large Table = 12
Cost of Large Table = $50
Seats in Small Table = 8
Cost of Small Table = $25
Let, Number of Large Tables = x
Number of Small Tables = y
According to the Question:
12x + 8y = 100
50x + 25y = 350
x = 3, y = 8 (refer graph 1)
(ii)
Cost of Student Ticket = x
Cost of Adult Ticket = y
According to the Question:
16x + 3y = 110.5
12x + 4y = 96
x = $5.5, y = $7.5 (refer graph 2)
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What age can a child count to 100?
Counting to 100 frequently and accurately can be mastered between the ages of three and a half and five and a half, but no later than the age of six.
What is a child's developmental?The series of physical, language, mental, and emotional changes that occur in a kid from birth to the beginning of maturity is referred to as child development. During this phase, a kid moves from being dependent on their parents/guardians to be more self-sufficient.
Most parents will notice their children can count to 100 without any assistance around this age.
So it was apparent that they had a lot of practice time and focused specifically on counting to 100. The average age of parents in the discussion cable ranged from tardily 5 to early 6 years old.
Some parents expressed concern about their children not being able to count to 100 by the age of six, but they were apathetic because it was apparent their child was capable of other developmental goals.
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P(A) = 0.50, P(B) = 0.40, and P(A and B) = 0.15.
What is P(A or B)?
From the concept of algebra of venn diagram we obtain that
P(A or B) = 0.75.
A set is a collection of well-defined objects.
A subset contains all the elements or few elements of the given set.
The improper subset is when it contains all the elements of the given set and the proper subset is when it doesn't contain all the elements of the given set.
From set theory, we know that N(A∪B) = N(A) + N(B) - N(A∩B).
It states that N(A) or N(B) is the sum of N(A) and N(B) minus the common intersecting region N(A∩B) as we have already considered the region in the sum of N(A) and N(B) twice.
Similarly, P(A or B) = P(A) + P(B) - P(A∩B)>
Therefore, P(A or B) = 0.50 + 0.40 - 0.15.
P(A or B) = 0.90 - 0.15.
P(A or B) = 0.75.
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Demand for a product and the forecasting department's forecast (naïve model) for a product are shown below. Compute the mean squared error.
Period Actual Demand Forecasted Demand
1 12 - -
2 15 12
3 14 15
4 18 16
a. 4.67 b. 5.33 c. 6.67 d. 3.33
The mean squared error is 4.67. So the option a is correct.
In the given question, demand for a product and the forecasting department's forecast for a product are given.
We have to compute the mean squared error.
Period Actual Forecasted Error Absolute Squared
Demand(E) Demand (F) (E-F) Error |E-F| Error |(E-F)|^2
1 12
2 15 12 3 3 9
3 14 15 -1 1 1
4 18 16 2 2 4
Total=6 Total=14
Now we finding the mean squared error (MAE)
Mean squared error = ∑|(E−F)|^2/n
Mean squared error = 14/3
Mean squared error = 4.67
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