The difference between transform and fit_transform is that transform() method is used to perform scaling whereas fit_transform does both the fitting and the transforming in one step.
In this question we need to describe the difference between methods transform() and fit_transform()
We know that the methods like transform(), and fit_transform() provided by the scikit-learn package.
Both are the methods of class sklearn.preprocessing.StandardScaler()
The transform() method is used to perform scaling using mean and standard deviation which is calculated using the .fit() method.
The fit_transform() method does both fits and transform i.e., fit_transform() calculates the mean and standard deviation for a given feature and also perform scaling.
Therefore, transform() changes the data and fit_transform does both the fitting and the transforming in one step.
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What is the domain and range calculator?
The domain and range calculator is a tool that allows us to enter the necessary data and have it compute and output the domain and range.
What are domain and range?The range of values that we are permitted to enter into our function is known as the domain of a function.
The x values for a function like f make up this set (x).
A function's range is the collection of values it can take as input.
After we enter an x value, the function outputs this sequence of values.
We simply solve the equation y = f to determine the values of the independent variable x and obtain the domain (x).
Simply put, after determining g's domain, x=g(y) will calculate the function's range (y).
The domain and range calculator is a tool in which we put in the required values and it calculates and gives out the domain and range as an output.
Therefore, the domain and range calculator is a tool that allows us to enter the necessary data and have it compute and output the domain and range.
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Study the following production possibility curve. the number of data points that illustrate the proper allocation of resources is .
The production possibilities using at least two data points.
The production possibility curve (PPC) is a graphical representation of the various combinations of two goods that can be produced with given resources and technology. It is a visual representation of the opportunity cost of production and helps us to understand the trade-offs that an economy has to make in order to maximize its production of goods and services.In order to illustrate the proper allocation of resources, a minimum of two data points are required. The first data point represents the production of both goods at the same level, while the second data point shows the production of one good at its maximum level while the other good is at its minimum level. The two data points represent the two different production possibilities available to the economy, and they demonstrate the trade-off between the two goods.
For example, if we have an economy that can produce two goods, A and B, the PPC can be used to illustrate the different combinations of these two goods that can be produced with a given level of resources. If we assume that the economy can produce 10 units of A and 8 units of B, the first data point would be (10,8). This represents the combination of A and B that can be produced using the same level of resources. The second data point would be (10,0), which represents the maximum production of A and the minimum production of B. This data point demonstrates the trade-off between the two goods, as more of A can be produced if fewer of B are produced.
Overall, the production possibility curve is a useful tool for understanding the trade-offs that an economy has to make in order to maximize its production of goods and services. By illustrating the production possibilities using at least two data points, the proper allocation of resources can be better understood
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Answer: The answer is three. 3.
Step-by-step explanation:
Got it right on edge.
What steps transform the graph of y=x 2 to y=−2(x−1) 2 +5?
The function y = - 2(x - 1)² + 5 is reflected along the y-axis, shifted horizontally to the right by 1 unit, and then shifted vertically by 5 units.
What are some rules of function transformations?Suppose we have a function f(x).
f(x) ± d = Vertical upshift/downshift by d units (x, y ±d).
f(x ± c) = Horizontal left/right shift by c units (x - + c, y).
(a)f(x) = Vertical stretch for a > 0, vertical shrink a < 0. (x, ay).
f(bx) = Horizonatal compression b > 0, horizontal stretch for b < 0. (bx , y).
f(-x) = Reflection over y axis, (-x, y).
-f(x) = Reflection over x-axis, (x, -y).
Given, The parent function is y = x² which is quadratic.
Now, y = - 2(x - 1)² + 5,
First is reflected along the y-axis (-) sign,
(x - 1) is shifted by 1 unit to the right horizontally and (+5) is shifted vertically 5 units up.
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What information should you check for when a figure is congruent?
Two shapes are congruent if they have the same shape and size. We can also say if two shapes are congruent, then the mirror image of one shape is the same as the other.
Geometric figures that are congruent share the same size and shape. In other words, figures are congruent if they can be transformed into one another through a series of transformations, rotations, and/or reflections. When the sides and angles of two triangles match, the triangles are said to be congruent.
Triangles that have comparable sides and equal angles are said to be congruent. Indicating congruence is the sign “≅”.
identical in size and shape.
Congruent refers to objects that are exactly the same size and shape. Even if we flip, turn, or revolve the shapes, the shape and size must remain the same.
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licence plate consists of a sequence of seven symbols: number, letter, letter, letter, number, number, number, where a letter is any one of 26 letters and a number is one among 0, 1, . . . , 9. assume that all license plates are equally liely. (a) what is the probability that all symbols are different? (b) what is the probability that all symbols are different and the first number is the largest among the numbers?
The probability that all symbols are different is 0.45 and the probability that all all symbols are different and the first number is the largest among the numbers is 0.11.
There are three places for alphabets, which can be filled by any one of the 26 letters. So the total possible ways of selecting 3 letters is 26³.
There are four places for alphabets, which can be filled by any one of the 10 digits. So the total possible ways of selecting 4 numbers is [tex]10^{4}[/tex].
So, the total possible ways of selecting 3 alphabets and 4 numbers for license plates is 26³ × [tex]10^{4}[/tex] = 175760000.
(a) The probability that all symbols are different.
The three letters can be selected in 26! ways = 26 × 25 × 24 = 15600
Similarly, the four numbers can be selected in 10! ways = 10 × 9 × 8 × 7 = 5040
Therefore, the probability that all symbols are different is
= 15600 × 5040 / 175760000
= 0.45 approximately
(b) The probability that all symbols are different and the first number is the largest among the numbers.
The probability that first number is largest among the numbers is = 3!/4! = 1/4
The probability that all symbols are different is 0.45 approximately
Therefore, the required probability is
= 1/4 of 0.45
= 0.11 approximately.
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Round 468,217 to the nearest ten thousand.
Answer: 470,000
My last answer for the day :)
Explanation: When rounding to the nearest ten thousand, look at the number right after it (the thousand value).
Since the number is 8, round the 6 up by one, so 7.
Hi! I have a quick question about an answer. My equation is (-3x^2y^4/5x^2y^)-2.
I’ve worked through it and got 25/9y^8, but the answer is 25x^2/9. How do I get that answer?
I attached a photo! Thank you so much!
Answer:
look the photo
How do I solve this equation?
The solution of the equation is ( x - 5 )² +23 = 0.
What is completing square method?Completing the square entails writing a quadratic in the form of a squared bracket and, if necessary, adding a constant.
Mathematical symbols can represent numbers (constants), variables, operations, functions, brackets, punctuation, and grouping, as well as the order of operations and other features of logical syntax.
Given that the equation is x²-10x = 3. The equation will be solved by completing the square method as below,
x²-10x = 3
x² - 10x - 3 = 0
( x - 5 )² - 3 + 5² = 0
( x - 5 )² - 3 + 25 = 0
( x - 5 )² + 23 = 0
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What are the two variables involved in the graph?
The two variables involved in the graph are: input variable (x - value) and output variable (y- value)
We know that many types of problems require two variables at the same time. such relation can be described algebraically by a two variable function or equation.
To represent such function graphically we use two perpendicular lines called axes and their point of intersection is called as the origin. This method of representation is known as the Cartesian coordinate system. The numerical value of one variable is measured along the horizontal axis called the x axis. Whereas the numerical value of the other variable is measured along the vertical axis called the y axis.
The four sections formed due to these axex are called quadrants.
Therefore, the two variables involved in the graph are input variable which measured along x-axis and output variable which measured along y-axis.
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whats the answer to this
The graph G represents the solution set for 8x + 5y ≤ 100.
What is Solution set ?
A solution set in mathematics is the collection of values that satisfy a particular set of equations or inequalities. The set of solutions to a constrained optimization problem represents the viable zone.
We have, 8x + 5y ≤ 100
Let's assume it as 8x + 5y = 100,
when x = 0,
5y = 100
y = 20
when y = 0,
8x = 100
x = 12.5
So, The line touches x-axis and y-axis at 12.5 and 20.
Now, Putting (0, 0) in 8x + 5y ≤ 100,
We get, 0 ≤ 100 which is true.
Hence, The region below the line should be the solution set for 8x + 5y ≤ 100.
So, Graph G represents the solution set for 8x + 5y ≤ 100.
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If 6n+8=1-n
What does n=?
Answer: n= -1
Step-by-step explanation:
6n+8=1-n
6n+n=1-8
7n=-7
n=-1
What is the missing term?
Answer:
5
Step-by-step explanation:
-5*-1 = 5
Students were surveyed about their preference between dogs and cats. The following two-way
table displays data for the sample of students who responded to the survey.
How many students in the sample were female?
students
Prefers dogs: male 30, female 20
Prefers cats: males 10, females 26
No preference: males 2, females 6
Answer:
46 students
Step-by-step explanation:
20 female prefers dogs + 26 female prefer cats + 6 female no preference = 46 female total.
refer to the tabe summarizing service times of dinners at a fast food restaurant. how many individuals are included in the summary
By referring to the table that summarizes service times of dinners at a fast food restaurant, we can see that there are 49 individuals who are included in the summary.
We may calculate the total number of people by simply adding the frequencies:
9 + 20 + 13 + 4 + 3 = 49 people
A measure of an event's frequency is how often it occurs within a specific time frame. For clarity, it is sometimes referred to as temporal frequency and is distinct from angular frequency. The class interval is the distance between the top and lower class bounds of a frequency distribution table. Data are discrete pieces of factual information that are logged and used for analysis. Raw data is the foundation from which statistics are derived. Statistics are the results of data analysis, including its interpretation and presentation. The outcomes of data analysis, including its interpretation and presentation, are statistics. It includes techniques for data collection, evaluation, analysis, and interpretation, is the study and manipulation of data.
Note that the full question is:
Refer to the table summarizing service times (seconds) of dinners at a fast food restaurant. How many individuals are included in the summary? Is it possible to identify the exact values of all of the original service times?
Time (sec) Frequency
60 to 119 9
120 to 179 20
180 to 239 13
240 to 299 3
300 to 359 4
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What is the relationship between the area of the base of a prism?
The formula for the volume of a prism is V=Bh , where B is the base area and h is the height.
What is area?The area is the region defined by an object's form. The area of a form is the space covered by a figure or any two-dimensional geometric shape in a plane. The quantity area indicates the extent of a region on a planar or curved surface. Surface area refers to the area of an open surface or the border of a three-dimensional object, whereas area of a plane region or plane area refers to the area of a form or planar lamina.
Here,
V=b*h
b=base area of prism
h=height of prism
The volume of a prism is calculated as V=Bh, where B is the base area and h is the height.
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Lauren has a 16-foot ladder. The safety instructions recommend the base of
the ladder be placed 6 feet from the base of the wall. How high will the ladder
be able to reach up the wall?
Round your answer to the nearest tenth, if necessary.
Answer:
Step-by-step explanation:
You can use Pythagoras theorem for this
[tex]16^{2}[/tex] = [tex]6^{2}[/tex] + [tex]x^{2}[/tex]
256 = 36 + [tex]x^{2}[/tex]
220 = [tex]x^{2}[/tex]
[tex]\sqrt{220}[/tex] = x
14.8323.... = x
we also have to remember that it could be negative, but, negative distances are just the same distance but in the other direction, so they are the same length here.
14.8 feet = x to the nearest 10th
What is the volume of 6 cube?
Answer:
The number of unit cubes are 6, its volume is 6 cu cm.
Step-by-step explanation:
Write in radical form. Do not simplify.11x1/4
The solution for [tex]11^{\frac{1}{4} }[/tex] in radical form is 1.82116028... .
Radical form is pretty straight-forward. It refers to the form of a number or algebraic expression in which the number or algebraic expression is under a radical. However, we can better that by manipulating a number or algebraic expression in radical form to put it in a form called simplest radical form.
Apply the rule [tex]x^{\frac{m}{n} }[/tex]=[tex]\sqrt[n]{x^{m} }[/tex] to rewrite the exponential as a radical .
[tex]\sqrt[4]{11^{1} }[/tex]
Anything raised to 1 is the base itself.
[tex]\sqrt[4]{11}[/tex]
So the result can be shown in multiple forms like
Exact form: [tex]\sqrt[4]{11}[/tex]
Decimal form: 1.82116...
So the result for the expression in radical form is 1.82116...
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How do you prove similar and congruent?
Triangle congruence: If all three corresponding sides and all three corresponding angles are equal in size, two triangles are said to be congruent. Slide, twist, flip, and turn these triangles to create an identical appearance. They are in alignment with one another when moved. "≅" is the congruence symbol.
There are a few rules that check congruency of 2 distinct triangles are:
1.Side-Angle-Side (SAS) Rule
The triangles are congruent if the two sides and included angle of one triangle equal the two sides and included angle of another triangle.
2. Angle-Side-Angle (ASA) Rule
The triangles are congruent if two angles and the included side of one triangle equal two angles and the included side of another triangle.
and some other but these are the conditions that prove congruency of any traingle
Two triangles are similar if :
measure of all 3 angles are same.corresponding sides are in the same ratio for all 3 sides.There are a few rules that check similarity of 2 distinct triangles are:
1.Side-Angle-Side (SAS) Rule
Two triangles are similar if they have two pairs of sides that are in the same ratio and if the included angles are likewise equal.
2. Side - Side -Side (SSS) Rule
Two triangles are similar if they have three pairs of sides that are in the same ratio.
and some other but these are the conditions that prove similarity of any traingle
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answer the question below
Answer:
Slope: - 1/9
Equation: [tex]y=-\frac{1}{9}x +8\frac{1}{9}[/tex]
Step-by-step explanation:
[tex]\frac{y_{2}- y_{1} }{x_{2}- x_{1} }[/tex]
[tex]\frac{8-7}{1-10}[/tex]
[tex]\frac{1}{-9}[/tex]
[tex]y=-\frac{1}{9}x +b[/tex]
[tex]8=-\frac{1}{9}(1) +b[/tex]
[tex]8=-\frac{1}{9}+b[/tex]
[tex]b=8\frac{1}{9}[/tex]
[tex]y=-\frac{1}{9}x +8\frac{1}{9}[/tex]
What is the slope of a 30 degree angle?
The slope of an angle 30 which in the positive x direction is tanФ = tan30= 1/√3
Slope:
Slope describes the steepness of a line and it also remains constant with the line it also gives us information about the direction. If the slop is negative then the line will be in the negative x-axis if the slop is positive the line will be in the positive x-direction.
A slope of a line is the change in the y coordinate w.r.t the change in the x coordinate.
m = Δy/Δx
m=tan θ = Δy/Δx
m=tan 30 = 1/[tex]\sqrt{3}[/tex]
Therefore the slope of a line that makes an angle of 30 with the positive x direction will be 1/√3
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The length of a rectangular deck i 4 time it width, and it perimeter i 20ft , what the deck area?
The area of rectangular deck with length 8 feet and width 2 feet is 16 ft².
What is area of rectangle ?Area can be defined as the amount of space covered by a plane of a particular shape. It is measured in "number" of square units (cm², inch², ft² etc.). In other words, the space occupied around this shape is called the area of the rectangle.
Rectangle perimeter = 2(length + width)Rectangle area = length x widthWe have, a rectangular deck with
length is 4 times its width and perimeter is 20ft.
Let us assume that "l" and "w" be length and width of a rectangular deck.
so, l = 4 w --(1)
Now, perimeter of rectangular deck = 2 ( l+w)
=> 2(l+w) = 20 --(2)
we have to calculate the area of rectangular deck and for this we have to calculate measure of length and width.
plug the value of "l" in equation (2) from (1)
2(l+w) = 20
=> 2(4w + w) = 20
=> 2× 5w = 20
=> w = 20/10 = 2 feet
from equation (1) , l = 4 × 2 = 8 feet
Area of rectangular deck, A = l× w
=> A = 8× 2 = 16 square feet
So, the required area is 16 square feet.
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Earning Commission Sales Commision Rate Commission $750 3%
The commission for $750 at 3% is:
Commission can be defined as the fees or extra fees that is been paid to someone for a job well done or for rendering a service.
Now let find the commission amount using this formula
Commission = Earnings × rate
Where:
Earnings = $750
Rate =3%
Commission = $750 × 3%
Commission = $22.50
Therefore the commission is $22.50.
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The complete question is:
Find the commission.
Earning Commission
Sales Commission Rate Commission
$750
3%
?
The commission is $
a manufacturer claims that the mean lifetime of its fluorescent bulbs is 1500 hours. a homeowner selects 40 bulbs and finds the mean lifetime to be 1480 hours with a population standard deviation of 80 hours. test the manufacturer's claim. use alpha equal to 0.05. state the sample mean and the population standard deviation.
Z-score of the manufacturer's claim is 0.25.
what is Z-score?It is a statistical expression that refers the difference between observed value and standard deviation.
How to calculate Z value?we calculate the Z-score from the following equation.
Z-score= X-μ/σ
(Observed value- mean value)/standard deviation
as per the question= (manufacturer's claim - sample mean)/standard deviation
(1500-1480)/80=0.25
hence, Z-score is 0.25
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Z-score of the manufacturer's claim is 0.25.
what is Z-score?It refers to the difference between the observed value and standard deviation and is a statistical statement.
The standard score, also known as a z-score, is a highly helpful statistic since it lets us compare scores from different normal distributions and assess the likelihood that a given score will fall within our normal distribution.
The 90th percentile's z-score is 1.2816, as calculated by the Percentile to Z-Score Calculator. Therefore, a student's z-score would be deemed "excellent" if it was greater than or equal to 1.2816.
How to calculate Z value?we calculate the Z-score from the following equation.
Z-score= X-μ/σ
(Observed value- mean value)/standard deviation
as per the question= (manufacturer's claim - sample mean)/standard deviation
(1500-1480)/80=0.25
hence, Z-score is 0.25
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How do you translate a triangle with coordinates?
To translate a triangle with coordinates, you need to add the same value to each of the x and y coordinates of each vertex of the triangle. This will shift the triangle in the desired direction.
To translate a triangle with coordinates, you need to add the same value to each of the x and y coordinates of each vertex of the triangle. For example, if you wanted to translate the triangle with coordinates (1,2), (3,4), and (5,6) by two units to the right and two units up, you would add two to each x-coordinate and two to each y-coordinate. The new triangle would have coordinates (3,4), (5,6), and (7, 8).
1. Identify the coordinates for the triangle: (1,2), (3,4), and (5,6).
2. Decide how much you want to translate the triangle: two units to the right and two units up.
3. Add two to each x-coordinate and two to each y-coordinate: (3,4), (5,6), and (7,8).
4. The triangle is now translated two units to the right and two units up.
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Work out the mean age of the team. Around your anwer to 1 decimal place
A new player join and raie it to 22 year
how old i the player
The average of age of team is 21.3 .
The age of new player is 30 .
What is average value ?
Generally, an “average” value purports to represent or to summaries the relevant features of a set of values; and in this sense the term would include the median and the mode. In a more limited sense an average compounds all the values of the set, e.g. in the case of the arithmetic or geometric means.
Have given ,
Ages of team are 19,20,21,22,23
and frequencies are 1,2,2,5,1
Average of team = [tex]\frac{19 * 1 + 20 * 2 + 21 * 2 + 22 * 5 + 23 * 1}{11}[/tex]
Average of team = 21.3
Let x age of new join player ,
[tex]\frac{234 + x}{11} = 22[/tex]
x = 30
The average of age of team is 21.3 the age of new player is 30.
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Given ,
Ages of team are 19,20,21,22,23
and frequencies are 1,2,2,5,1
Average of team = 21.3
Let x age of new join player ,
x = 30
The average of age of team is 21.3 the age of new player is 30.
True or false-
The domain and range for the function f(x) = x3 -2x2 -3x are both all real numbers.
Answer:
The answer is False.
Step-by-step explanation:
Check the explanation below
What are the 4 inverse operations?
The four Inverse operations are :
Addition and SubstractionMultiplication and DivisionSquare and Square RootCube and Cube rootWhat are inverse Operation ?Inverse operations, such as addition and subtraction, multiplication and division, are pairs of mathematical operations where one operation reverses the effect of the other. In most cases, a number's inverse refers to its reciprocal, as in x /1 Equals 1 / x. One results from multiplying a number by its reciprocal, or inverse.
To produce a result equal to 0, add the original number and the additive inverse by simply reversing the sign of the integer. On the basis of negation of the original number, the characteristics of additive inverse are listed below. For instance, if x is the starting number, then -x is x's additive inverse.
A multiplicative inverse or reciprocal for a number x is a number that, when multiplied by x, produces the multiplicative identity, or 1. It is represented by 1/x or x/1. A fraction a/b has a multiplicative inverse of b/a. Divide 1 by the real number to obtain the multiplicative inverse of the number.
Squares are the numbers that are produced when a value is multiplied by itself. In contrast, a number's square root is a value that, when multiplied by itself, returns the original value.
The definition of a cube is the process of multiplying a number by itself three times, while a cube root is the opposite of a cube. Alternately, we may state that a number's cube root gives us a number that, when cubed, gives us the same number and is referred to as a perfect cube.
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Does anyone know the answer to this?
Answer: I think it is between 3rd and 4 lines of number 2 and 3
Step-by-step explanation:
Because it line here is 0.20
so 2.7 will be some where between 3rd and 4 lines of number 2 and 3
For what values of x and y are the triangles to the right congruent by HL?
Based on the Hypotenuse-Length Theorem of Congruence (HL), the values of x and y that will make both right triangles congruent are:
x = 8
y = 4
What is Recall?Two right triangles are congruent to each other by the Hypotenuse-Length Congruence Theorem (HL) if the hypotenuse length and one leg of a right triangle is congruent to the hypotenuse length and leg of the other right triangle.
Thus, for both right triangles to be congruent, it means that their hypotenuse and one of their corresponding legs must be equal to each other.
Use this to create two equations and solve to get the value of x and y.
Equal Hypotenuse:
(eqn. 1)
Equal legs:
(eqn. 2).
Find the value of y, by substituting x = (y + 4) into eqn. 1.
(eqn. 1)
Substitute
Find the value of x, by substituting y = 4 into eqn. 2.
X=y+4
X=4+4
X=8
Therefore, based on the Hypotenuse-Length Theorem of Congruence (HL), the values of x and y that will make both right triangles congruent are:
x = 8
y = 4
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