The correlation coefficient is a numerical measure of the strength of the linear relationship between two variables. It ranges from 0 to 1, with 0 indicating no linear relationship, and 1 indicating a perfect linear relationship. A value of 0.5 or higher is considered a strong correlation.
The correlation coefficient is calculated by taking the covariance between two variables and dividing it by the product of the standard deviations of the two variables. The formula is as follows:
r = covariance(x,y) / (stdDeviation(x) * stdDeviation(y))
The correlation coefficient is a statistical measure used to quantify the strength of the linear relationship between two variables. It takes a value between 0 and 1, with 0 indicating no linear relationship, and 1 indicating a perfect linear relationship. The correlation coefficient is calculated by taking the covariance between the two variables and dividing it by the product of their standard deviations. A negative correlation coefficient means that as one variable increases, the other decreases. A value of 0.5 or higher is considered a strong correlation. The correlation coefficient can be used to determine the strength of the relationships between variables, whether they are linear or non-linear. It is an important tool for data analysis and can help to identify relationships between different variables.
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Urgent!! Help plsssss
Answer:
Step-by-step explanation:B
What is the image point (-4, 5) after a translation right 5 units and 2 units up?
The image of (-4, 5) after a translation right 5 units and 2 units up is (1, 7).
What is the image of the point?
The given point P is "reflected" in the mirror and appears on the other side of the line an equal distance it. Drag the point P to see this. The reflection of the point P over the line is by convention named P' (pronounced "P prime") and is called the "image" of point P.
Going right means the x value goes up. In this case, it went to the right 5 spaces. so, all you have to do is add 5 with -4 which is 1.
When going up on a graph, the y value goes up as well. Add 2 with 5 which is 7.
Therefore, the answer is (1, 7).
Hence , the image point (-4, 5) after a translation right 5 units and 2 units up is (1, 7).
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What math do 11th graders take?
Answer:
Depends on your school. I took Pre-calculus my 11th grade year. Sometimes it is Algebra 2.
What is positive infinity called?
The Positive Infinity is called the Lemniscate.
Infinity:
Infinity is anything greater than infinity, infinity, or any natural number. Often represented by the infinity symbol {\displaystyle \infty }\infty. The most interesting point about infinity is – ∞ < x < ∞. This is a mathematical shorthand for negative infinity less than real and positive infinity greater than real. where 'x' represents a real number.
Positive Infinity:
Numbers approach negative infinity as they move left on the number line and positive infinity as they move right on the number line. Negative infinity is always less than any number and positive infinity is always greater than any number.
Positive Infinity: Differs from mathematical infinity in that:
A positive number divided by positive infinity yields positive 0.A negative number divided by positive infinity results in negative 0.0 multiplied by positive infinity yields NaN.NaN multiplied by positive infinity NaNPositive infinity divided by any negative number (except negative infinity) gives negative infinity.Positive infinity divided by any positive number (except positive infinity) yields positive infinity.Learn more about Positive Infinity:
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x+5y[tex]\leq[/tex]-15
Answer:
y<= -1/5x-3
Step-by-step explanation:
x+5y<=-15
5y<=-x-15
y<=-1/5x-3
crestwood elementary school has an active four-square league, consisting of ten players, including justin and tim. each day at recess, the ten players split into two four-square games, each with five players in no relevant order. over the course of a semester, each possible match-up of five players occurs once. how many times did justin play in the same game as tim?
Justin and Tim have played the same game a total of 10 times.
There are 10 players in Crestwood Elementary's four-square league, including Justin and Tim. Over the course of a semester, each possible match-up of five players occurs once. This means that Justin and Tim have played the same game a total of 10 times.
To calculate this, we need to consider the different combinations of players that can make up a five-person game. There are a total of 10! (10 factorial) permutations of the 10 players, meaning that each possible game is made up of different players.
This includes the combination of Justin and Tim, which occurs 10 times. Therefore, Justin and Tim have played the same game 10 times during the semester.
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Tyrese bought 35 tickets to use at a carnival. He used some of the tickets to ride the bumper cars and play some games. Now he has 28 tickets left. What is the percent of decrease in the number of tickets that he has?
The percent of decrease, in the number of tickets that he has, is 20%.
What is a percentage?The term "percentage" refers to any ratio or number that may be expressed as a fraction of 100. And the sign "%" is used to denote it.
Given, Tyrese bought 35 tickets to use at a carnival.
He used some of the tickets to ride the bumper cars and play some games. Now he has 28 tickets left.
That means,
he used 35 - 28 = 7 tickets.
To find the percentage of decrease:
Let m be the percentage of decrease.
Then,
7 = m x 35 / 100
m = 700 / 35
m = 20
Therefore, the percentage of decrease is 20%
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What is the factor of 12x² 11x 2?
Therefore , the solution to the given problem of the equation whose factors are (4x+1)(3x+2) .
How to analyze the equation?
An equation is a mathematical statement made up of two expressions connected together by the equal sign. For instance, 2x – 5 = 15 is an equation. By resolving this equation, we can establish that the variable x has a value of 5.
According to the given question:
Given expression: 12x² +11x+2
=> 12x² +11x+2
Break the expression into groups
=> (12+3x) + (8x+2)
Subtract 3x from 12x+3x to get 3x(4x+1).
Add 2 to 8x+2 to get 2(4x+1)
= 3x(4x+1)+2(4x+1)
Factor out common term 4x+10
= (4x+1)(3x+2)
Therefore , the solution to the given problem of the equation whose factors are (4x+1)(3x+2) .
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The bunny had 1/2 to eat in the morning and 1/5 left over how much did the bunny eat at night
By applying the fraction concept, we can conclude that the bunny ate 3/10 food at night.
Application of the concept of fractions in real life
In real life, the concept of a fraction is often used when we want to talk about a part of a whole, a part of something, a part of a group of people, etc.
In the problem above it is stated that initially the bunny has food, which will be eaten in the morning and at night, and some food was left over.
If x is the total food for the bunny, then the given problem can be written mathematically as follows:
breakfast (a) : a = 1/2x
dinner (b)
food left (c) : c = 1/5x
Then the mathematical expression that describes the above situation is as follows:
x = a + b + c
= 1/2x + b + 1/5x --> then we make the denominators the same, so it becomes:
x = 5/10x + b + 2/10x
= 7/10x + b
x - 7/10x = b
3/10x = b
So, the food that the bunny eats at night was 3/10.
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Answer:
So, the food that the bunny eats at night was 3/10.
:D im jus smart.
What is the 70% out of 20?
Answer:
Step-by-step explanation:
14
Answer: 70% of 20 is 14.
Rowan and 55 points playing a game Rowan’s mom earn three times as many points as a Rowan how many points does Rowan’s mom earn
What is the mean in math?
A dataset's mean (also known as the arithmetic mean, which differs from the geometric mean) is calculated by dividing the sum of all values by the total number of values. The term "average" is frequently used to describe this measure of central tendency.
What does the mode mean?
By summing all the numbers in a data collection and dividing by the total number of values in the set, the mean (average) of the data set can be determined.
A data collection is ordered from least to largest, and the median is the midpoint number. A data set's mode is the number that appears the most frequently.
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.
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what is the distance from the focus to the vertex of a parabola with the equation
x = 1/12 (y-1)²
help please!
Answer:
3 units.
Step-by-step explanation:
In the equation x = 1/12 (y-1)², the vertex of the parabola is at the point (1,1). The focus of the parabola is located a distance called the "focal length" from the vertex.
The focal length is given by the formula f = 1/(4*p), where p is the coefficient of the x term in the standard form of the equation of the parabola.
In this case, the coefficient of the x term is 1/12, so the focal length is f = 1/(4*(1/12)) = 3. This means that the distance from the focus to the vertex is 3 units.
Solve for z [tex]2(5y+7x)^2=8\sqrt{3y-z[/tex]
The solution for z in the equation is z = 3y - 1/16(5y + 7x)⁴
How to determine the solution for z?From the question, we have the following parameters that can be used in our computation:
2(5y+7x)²=8√(3y-z)
Rewrite the equation
So, we have the following representation
2(5y + 7x)² = 8√(3y - z)
Take the square of both sides
This gives
4(5y + 7x)⁴ = 64(3y - z)
Divide both sides by 64
1/16(5y + 7x)⁴ = 3y - z
So, we have
z = 3y - 1/16(5y + 7x)⁴
Hence, the solution is z = 3y - 1/16(5y + 7x)⁴
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ITS DUE TODAY HELP At a football stadium, 2% of the fans in attendance were teenagers. If there were 290 teenagers at the football stadium, what was the total number of people at the stadium?
The required total number of people in the stadium are 14500.
Explain percentage.In math, a percentage is a number or proportion that can be communicated as a small part of 100. On the off chance that we need to compute percent of a number, partition the number by the entire and increase by 100. Thus, the rate implies, a section for each hundred
According to question:2% of the fans in attendance were teenagers, and there are 290 teenagers in number.
Let x be the total number of people in stadium.
So, 2% of x = 290
2x/100 = 290
x = 29000/2 = 14500 people
Thus, there are 14500 people in the stadium.
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What is the 5th root called?
A root of degree 5 is called a fifth root.
A radicand, or nth root, in mathematics is a number r that, when raised to the power n, equals the number x: rn = x, where n is a positive integer, also known as the degree of the root. A root of degree 5 is called a fifth root.
The required number is the result of multiplying a fifth root by itself five times.
Due to the fact that two multiplied by itself five times is 32, 532 = 2
Seven multiplied by itself five times is 16807.
Hence 516807 Equals 7 since 7 x 7 x 7 x 7 = 16807.
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Which expression results in a rational number
Answer:
B. (w)(y)
Step-by-step explanation:
(w)(y)
= 2 * √8 * 3 * √2
= 2 * √(2*2*2) * 3 *√2
= 2 * √2 * √2 * √2 * 3 * √2
= (2*3) * (√2 * √2) * (√2 * √2)
= 6 * 2 * 2
= 24
Find the domain for the rational function f of x equals quantity x plus 4 over quantity 3 times x minus 5.
1. negative infinity to negative five thirds and negative five thirds to infinity
2. negative infinity to five thirds and five thirds to infinity
3. (−[infinity], −4)( −4, [infinity]) (−[infinity], 4)(4, [infinity])
Answer:
2. negative infinity to five thirds and five thirds to infinity
Step-by-step explanation:
You want the domain of the rational function f(x) = (x +4)/(3x -5).
DomainThe domain is the set of input values for which the function is defined. A rational function is undefined when its denominator is zero. f(x) is undefined when ...
3x -5 = 0
x = 5/3
So, the value 5/3 must be excluded from the domain of f(x). The domain of f(x) is ...
-∞ < x < 5/3 ∪ 5/3 < x < ∞
What are the factors of 6x² 5x 6?
The factors of 6x² 5x 6 are: 1, 2, 3, 5, 6, 10, 15, 30, x, 2x, 3x, 5x, 6x, 10x, 15x, 30x, x², 2x², 3x², 5x², 6x².
1. Find the common factors of 6x², 5x, and 6:
The common factors are 1, 2, 3, 5, and 6.
2. Find the factors of each individual term:
For 6x²: 1, 2, 3, 6, x, 2x, 3x, 6x, x², 2x², 3x², and 6x².
For 5x: 1, 5, x, and 5x.
For 6: 1 and 6.
3. Combine the factors from each term to get the full list of factors:
The full list of factors is: 1, 2, 3, 5, 6, 10, 15, 30, x, 2x, 3x, 5x, 6x, 10x, 15x, 30x, x², 2x², 3x², 5x², and 6x².
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Find the distance from point $a\left(-1,\ 7\right)$ to the line $y=3x$. Round your answer to the nearest tenth. The distance is about units.
The distance from point [tex]$a\left(-1,\ 7\right)$[/tex] to the line [tex]$y=3x$[/tex] is about 4.5 units, rounded to the nearest tenth.
The distance from point [tex]$a\left(-1,\ 7\right)$[/tex] to the line [tex]$y=3x$[/tex] is equal to the length of the perpendicular line from point [tex]$a$[/tex] to the line[tex]$y=3x$[/tex]. The formula to find the distance from a point [tex]($x_1, y_1$)[/tex] to a line [tex]$ax+by+c=0$[/tex] is given by:
[tex]$$\frac{|ax_1+by_1+c|}{\sqrt{a^2+b^2}}.$$[/tex]
Substituting[tex]$$\frac{|ax_1+by_1+c|}[/tex] into the formula, we get:
[tex]$$\frac{|-3(-1)+1(7)+0|}{\sqrt{3^2+1^2}} = \frac{20}{\sqrt{10}}.$$[/tex]
Therefore, the distance from point [tex]$a\left(-1,\ 7\right)$[/tex] to the line [tex]$y=3x$[/tex] is about 4.5 units, rounded to the nearest tenth
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6 1/2+2/3+3/4 calcution with distribution
By the distribution property 6(1/2 + 2/3+3/4) = 23/2
Distribution Property:According to the distributive property, multiplying the difference or aum of numbers will be equivalent to multiplying the individual parts of the difference or sum.
The expression that can explain the above rule is A ( B+ C) = AB + AC
Here we have
6(1/2 + 2/3+3/4)
By distribution property
=> 6(1/2 + 2/3+3/4)
= 6(1/2) + 6(2/3)+ 6(3/4)
= 3 + 2(2) + 3(3/2)
= 3 + 4 + 9/2
= 7 + 9/2
= (14+9)/2 [ add 7 and 9/2 by taking 2 as LCM ]
= 23/2
Therefore,
By the distribution property 6(1/2 + 2/3+3/4) = 23/2
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Complete Question:
1. Find the value of this fraction computation: 6(1/2 + 2/3+3/4)
(3x-2)-3(2x+1)=4(4x-3)
Answer:
x = 7/19
Step-by-step explanation:
(3x-2)-3(2x+1)=4(4x-3)
3x - 2 - 6x - 3 = 16x - 12
-19x = -7
x = 7/19
Answer:
x = 7/19
Step-by-step explanation:
(3x-2)-3(2x+1)=4(4x-3)
3x - 2 -6x -3 = 16x -12
-3x -5 = 16x -12
-5 = 19x -12
7 = 19x
x = 7/19
A 20-foot ladder is leaning against the side of a house so that the bottom of the ladder is 12 feet from the base of the house. Will the ladder reach a window that is 14.5 feet above the ground?
Yes, because the 16 feet ladder will reach to the window that is 14.5 feet above the ground.
What is Pythagoras theorem?Pythagoras' Theorem states that the square of the hypotenuse side of a right-angled triangle equals the sum of the squares of the other two sides.
The hypotenuse of a triangle, which has a straight angle of 90 degrees, has a square that, according to the Pythagoras theorem, equals the sum of the squares of the other two sides.
According to the question;
A 20-foot ladder is leaning against the side of a house.
Hypotenuse H= 20 feet
The bottom of the ladder is 12 feet from the base of the house.
Base B = 12 feet
And let P be the perpendicular.
Using Pythagoras theorem
H²= P² + B²
20² =12² +P²
P²= 400-144
P²= 256
Taking the square root.
P= 16 feet.
Since the height of the ladder is 16 feet, and we have to reach 14.5 feet above the ground.
16 > 14.5
That means, the ladder will reach to the window.
Hence, Yes, the 16 feet ladder will reach to the window.
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What law do you use for SSS?
All the three sides of one triangle are equivalent to the corresponding three sides of the second triangle, then the two triangles are said to be congruent by SSS rule.
SSS Theorem: The Side Side Side (SSS) Theorem states that all three sides of a triangle are congruent (identical) to the corresponding sides of another triangle, then the triangles themselves are also congruent.
Example of SSS Triangles:
From the figure:
These are SSS triangles. Given that they have the exact same measurements, we can deduce the following:
AB = XY
BC = YZ
AC = XZ
If we know that AB = 5 units, then XY also equals 5 units.
And if BC = 4 units, then YZ also equals 4 units.
Further, if AC = 7 units, then XZ also equals 7 units.
Then the two triangles are said to be congruent by SSS rule.
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deli owner sold 90 sandwiches in one day. Of those sandwiches, 36 were pastrami. What percent of sandwiches sold were NOT pastrami
Answer:60%
Step-by-step explanation:
90-36=54 54/90 = 60
60%
What is the relationship between the volumes of a rectangular prism and a rectangular pyramid whose length width and height are all equal?
The volume of the rectangular prism is 3 times the volume of the rectangular pyramid.
Consider a rectangular prism with length l, width w and height h.
The volume of the rectangular prism is:
volume of a rectangular prism = length * width * height
V1 = l * w * h
Consider a rectangular pyramid with rectangular base of length l1, width w1 and the height of pyramid is h1.
The volume of the rectangular pyramid is:
volume of a rectangular pyramid = 1/3 * base area * height
Here, base area = length * width
= l1 * w1
So, volume of a rectangular pyramid = 1/3 * base area * height
V2 = 1/3 * l1 * w1 * h1
We have been given a rectangular prism and a rectangular pyramid have equal length, width and height .
l1 = l, w1 = w and h1 = h
so, V2 = 1/3 * l * w * h
V2 = 1/3 * V1
V1 = 3 * V2
volume of a rectangular prism = 3 * volume of a rectangular pyramid
Therefore, the relationship between the volumes of a rectangular prism and a rectangular pyramid whose length width and height are all equal:
volume of rectangular prism = 3 * volume of a rectangular pyramid
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How many rows and columns are there in Excel 2013?
From Excel 2007 onwards (2010, 2016, etc.) we have exactly 10,48,576 rows and 16,384 columns.
Now, According to the question:
How many rows and columns does Excel 2013 have?
From Excel 2007 onwards (2010, 2016, etc.) we have exactly 10,48,576 rows and 16,384 columns.
Excel sheet:-
In Microsoft Excel, a sheet is often called a worksheet. A sheet is a single page that contains its own collection of cells to help you organize your data. There can be many sheets in your Excel document and you can see the sheets listed as tabs along the bottom of your document.
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Given: 3x < -9. Choose the solution set. {x | x > -1/3} {x | x < -3} {x | x < 3} {x | x > -3}.
Answer:
D is the answer
Step-by-step explanation:
What is an expression in math examples?
Expression is a constant, variable or constant multiplied by a variable separated by operator.
What is algebraic expression and identity?Identity, as we all know, is equality, which holds true regardless of the variable's value. These identities are algebraic formulas that show that for all possible values of the variable, the Left-Hand Side (LHS) and the Right-Hand Side (RHS) of the equation are equal. A phrase that can have any value is called a variable.
What are the types of algebraic expressions?Monomial, polynomial and binomial are the three types of algebraic expression.
An expression with variables, constants, and algebraic operations is known as an algebraic expression (like subtraction, addition, multiplication, etc.). Terms comprise expressions. For instance: 5x+20y, 6-8x.
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Is equidistant same as mid point?
Yes, since the midpoint of a line segment is at an equal distance from the two endpoints, it is said to be equidistant from them.
A point is said to be equally far from a group of objects if there is an equal distance between it and each member of the group.
The perpendicular bisector of two specified (different) points is their location in two-dimensional Euclidean geometry. The locus of points equidistant from two provided points in three dimensions is a plane, and generalizing further, the locus of points equidistant from two given locations in n-dimensional space is a (n1)-space.
The circumcenter of a triangle is a location that is equally spaced from each of the three vertices. This point exists in every non-degenerate triangle. The circumcentre of cyclic polygons is equally far from all of the vertices, and this conclusion may be generalized to them.
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