While adding predictor variables to a multiple regression model can potentially decrease the adjusted R², it can also increase it if the added predictors contribute significantly to the explained variance. The statement is not entirely correct.
The statement "adding predictor variables to a multiple regression model can only decrease the adjusted R²" is not entirely correct. Let me explain why:
When you add a predictor variable to a multiple regression model, the R² value, which represents the proportion of the variance in the dependent variable that is explained by the predictor variables, may increase or stay the same. However, it cannot decrease.
The adjusted R², on the other hand, takes into account the number of predictor variables in the model and adjusts the R² value accordingly.
As we add more predictors, there's a chance that the adjusted R² may decrease if the additional predictors do not contribute significantly to the explained variance.
However, it is not true that adding predictors can "only" decrease the adjusted R².
If the added predictor variables provide substantial power and improve the model, the adjusted R² can increase.
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The student's statement that "adding predictor variables to a multiple regression model can only decrease the adjusted R2" is not entirely correct.
While it is true that adding irrelevant predictor variables can decrease the adjusted R2, adding relevant predictor variables can increase or at least maintain the adjusted R2. This is because the adjusted R2 measures the goodness of fit of a regression model, taking into account the number of predictor variables and sample size. Therefore, if the added predictor variable has a significant relationship with the dependent variable, it can improve the model's ability to explain variance and increase the adjusted R2.
In summary, the effect of adding predictor variables on adjusted R2 depends on their relevance to the dependent variable and the existing predictor variables in the model.
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please help I'm struggling.
Answer: 6
Step-by-step explanation: Very simple, just do 17 - 11 and you'll get 6. I hope that's the correct answer
what kind of motion should you impart to the nozzle of a garden hose so that the resulting stream of water approximates a sine curve?
A periodic up-and-down motion should be imparted to the nozzle of a garden hose such that the resultant stream of water approximates a sine curve.
A sine curve is a mathematical function that oscillates between a maximum and minimum value in a repeating pattern. To approximate this with a stream of water from a garden hose, the nozzle of the hose should be moved in a periodic up-and-down motion. This motion will cause the water stream to oscillate between a higher and lower height, creating the repeating pattern characteristic of a sine curve. The speed at which the nozzle is moved, as well as the amplitude of the motion, can be adjusted to create a more accurate representation of a sine curve.
Also, the nozzle can be turned to make the water flow in a spiral, which looks even more like a sine curve.
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What is the measure of y? 3 27 y Z * A z = [?] Give your answer in simplest form.
The required measure of x would be 9√10 units for the attached figure.
What is the right triangle?A right triangle is defined as a triangle in which one angle is a right angle or two sides are perpendicular.
The right triangle is given in the question, as follows:
We have to determine the measure of x for the attached figure.
According to Euclidian theorem, the required solution would be as:
x² = 27 × (27+3)
x² = 27 × 30
Apply the multiplication operation,
x² = 810
Apply the square root property for both sides
x = 9√10
Therefore, the required measure of x would be 9√10 units.
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The question seems to be incomplete the correct question has been attached below.
2(x + 3) = x - 4 Linear equations
Answer: x=−10
Step-by-step explanation:
2(x+3)=x−4
Use the distributive property to multiply 2 by x+3.
2x+6=x−4
Subtract x from both sides.
2x+6−x=−4
Combine 2x and −x to get x.
x+6=−4
Subtract 6 from both sides.
x=−4−6
Subtract 6 from −4 to get −10.
x=−10
Step-by-step explanation:
2(x+3)=x−4
Step 1: Simplify both sides of the equation.
2(x+3)=x−4
(2)(x)+(2)(3)=x+−4 (Distribute)
2x+6=x+−4
2x+6=x−4
Step 2: Subtract x from both sides.
2x+6−x=x−4−x
x+6=−4
Step 3: Subtract 6 from both sides.
x+6−6=−4−6
x=−10
Please help me with my work
Answer: 27p^15 q^3
Step-by-step explanation:
Please help need by tonight
By treating the,, >, or sign as a = sign, the inequality can be shown graphically. Make a dotted line graph of the equation if the inequality is either or.
How do you graph an inequality?For a 125-pound individual, a 30-minute hard stationary bike workout burns roughly 315 calories, 378 calories for a 155-pound individual, and 441 calories for a 185-pound someone. You will burn even more calories if your weight is higher.
According to the American Council on Exercise (ACE), you should cycle for at least 30 minutes at a time at a moderately strenuous intensity if you want to lose weight. You'll want to pedal for longer to burn even more calories. The ACE also advises combining two exercises into one cross-training session to speed up weight loss.
Treat the,, >, or sign as a = sign when graphing an inequality, and then graph the equation. The equation should be plotted as a dotted line if the inequality is either or.
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2 The length of a soda can is 6 Inches. A company would like to create a larger, scale model of the
sool of rome ng 3
OPOT 99 feet. What will the length of the model be?
=1
A. 180 ft
B.
60 ft
C.
30 ft
D.
20 ft
The correct answer is option B: 60 ft.
To find the length of the model, you can use the formula:
Length of model = (Length of original object) x (Scale factor)
The scale factor in this case is 99 feet / 6 inches = 16.5 feet/inch
So the length of the model = (6 inches) x (16.5 feet/inch) = 60 ft
11x-5y=2
x-5y=-18
solve the system using elimination
The solution to the system of equation is as follows:
x = 2 and y = 4
How to solve system of equation using elimination method?System of equation can be solved using different method such as elimination method, substitution method and graphical method.
Let's solve the system of equation using elimination method as follows:
11x - 5y = 2
x - 5y = -18
subtract equation(ii) from equation(i) to eliminate the variable y.
Therefore,
10x = 20
divide both sides by 10
x = 20 / 10
x = 2
Let's find y by substituting the value of x in equation(ii)
x - 5y = -18
2 - 5y = -18
-5y = -18 - 2
-5y = -20
divide both sides by -5
y = -20 / -5
y = 4
Therefore, x = 2 and y = 4.
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Suppose a dog toy manufacturer packs 5 solid balls in a cylindrical container. The radii
of the balls and the cylinder are each 10 cm, and the height of the cylinder is 100 cm.
How much empty space is within the container when the balls are packed within it?
You may round your answer to two decimal places.
Empty space is within the container is 90.The volume of the object from the volume of the container in which it is packaged can be used to determine the empty space in a container.
How can you determine how much room is empty?The volume of the object from the volume of the container in which it is packaged can be used to determine the empty space in a container.
The cylinder will have an interior height of 9 inches (three times the diameter of the balls) and an interior diameter of 3 inches (1.5 inch radius). It takes up around 21.2 cubic inches of the cylinder when the balls are not there.
The volume of the object from the volume of the container in which it is packaged can be used to determine the empty space in a container.
According to question:- 100 - 10 = 90.
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the average of the first 4 weights was 5 pounds. the average of the next 11 weights was 20 pounds. what was the overal average of the weights?
The overall average of the weights is 16.
What is average?The ratio of the sum of the values in a particular set to all the values in the set is the mean value, which is the definition of the average.
Given that the average of the first 4 weights is 5.
Avg = Total Sum / Total number of weights
Substituting the value of Avg = 5 and Total number of weights= 4 we have:
5 = Sum(4) / 4
Sum(4) = 20
The average of the next 11 weights was 20 pounds.
Substituting the values, we have:
20 = Sum(11) / 11
Sum(11) = 220
The total sum of the 4 weights and the 11 weights is:
Sum = Sum(4) + Sum(11)
= 20 + 220
= 240
The total number of weights are: 4 + 11 = 15
The overall average weight is:
Avg = Sum/ total number of weights
Avg = 240/ 15
Avg = 16
Hence, the overall average of the weights is 16.
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PLS HELP WILL MARK BRAIN THINGY
The vertices of the image of the figure LMNO following a 90° rotation about the origin are; L'(3, 5), M'(6, 6), N'(3, 4), O'(6, 4), indicating that the corresponding segment L'O' and M'N' are on the lines x = 6 and x = 3, the correct option is option B.
B. x = 6 and x = 3
What is a rotation transformation?A rotation is the circular motion about a specified center of rotation of the points on the figure of the preimage.
The coordinates of the vertices of the figure LMNO are; L(-5, 3), M(-6, 6), N(-4, 6), O(-4, 3)
The transformation of the figure LMNO = 90° clockwise rotation about the origin.
The coordinate of the image of the point (x, y) following a rotation of 90° about the origin is the point (y, -x).
Therefore, the coordinates of the image of the figure LMNO following a rotation of 90° about the origin are found as follows;
L(-5, 3) [tex]\underset{\longrightarrow}{R_{90^{\circ}\ clockwise}}[/tex] L'(3, 5)
M(-6, 6) [tex]\underset{\longrightarrow}{R_{90^{\circ}\ clockwise}}[/tex] M'(6, 6)
N(-4, 6) [tex]\underset{\longrightarrow}{R_{90^{\circ}\ clockwise}}[/tex] N'(6, 4)
O(-4, 3) [tex]\underset{\longrightarrow}{R_{90^{\circ}\ clockwise}}[/tex] O'(3, 4)
The points L' and O' are colinear with the line x = 3, and the points M' and N' are colinear with the line x = 6
Therefore, the corresponding segment to the segment LO, L'O' lie on the the line x = 3, and the corresponding segment to the segment MN, M'N' lie on the line x = 6
The correct option is B. x = 6, and x = 3
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Use the cylinder shown to mark each statement as true or false. Rewrite and correct any faise
statements.
9. The height of the cylinder is 4 feet.
10. The area of the base is equal to п(4²).
11. The volume of the cylinder is 31.4 ft³.
d = 4 ft B
2.5 1
The truth values of the statements are:
9. The height of the cylinder is 4 feet (False), the height is 2.5 feet10. The area of the base is equal to п(4²) (False), the area is п(2²)11. The volume of the cylinder is 31.4 ft³How to determine the true statementsThe complete question is added as an attachment, where we have the following parameters:
Height, h = 2.5 feet
Diameter, d = 4
The base area is then calculated as
Area = п(r²)
So, we have
Area = п(2²)
The volume is then calculated as
Volume = Base area * Height
So, we have
Volume = п(2²) * 2.5
Evaluate
Volume = 31.4
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Oliver was trying to beat his old score of 990 points in a video game. If he scores exactly 54 points each round, how many rounds would he need to play to beat his old score?
Answer:
19 rounds
Step-by-step explanation:
To find this, we take
990 / 54 = 18.33
It will not be 18 rounds because Olive needs 18.33 rounds to beat his old score, so we have to round up to 19 rounds.
Answer:
19 rounds
Step-by-step explanation:
990/54=18.33 round to 19
The slope of the line below is -3. Write a point-slope equation of the line using the coordinates of the labeled points (5,-7)
The point-slope equation of the line for the given slope and coordinates is found as : y = -3x - 16.
Define the term point-slope equation?A line's equation written using a single point here on line and the line's slope is referred to as the point-slope form. The slope has been the rise with run, or the proportion of the change there in y values out over changes in the x values, and the point form is denoted as (x,y).For the stated question.
The slope of the line m = -3.
Coordinates = (5,-7)
The general point-slope equation is given as:
y - y1 = m (x - x1)
y - 5 = -3(x + 7)
y - 5 = -3x - 21
y = -3x - 16
Thus, the point-slope equation of line for the given slope and coordinates is found as : y = -3x - 16.
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What is the formula for enlargement?
The formula for enlargement = New length = original length × scale factor.
What is enlargement?
A shape's size can be changed by enlarging it. A shape can be made larger by multiplying all of its lengths by the scaling factor. We can calculate how much larger the shape will be by using the scaling factor. For instance, if a shape is scaled up by a factor of 2, all of the sides will lengthen by the same factor.
Here,
We have to determine the formula for enlargement.
We concluded that New length = original length × scale factor.
When we enlarge a shape by a scale factor, the area of the shape is multiplied by the square of the scale factor. When we enlarge a shape by a scale factor, the volume of the shape is multiplied by the cube of the scale factor.
Hence, the formula for enlargement = New length = original length × scale factor.
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Simplify.
(-3ab3)4
thanks
Answer: -12ab^3
Step-by-step explanation: (-3ab^3) 4 -12ab^3
What is the difference between real function and complex function?
A real function, usually referred to as a real-valued function, is one whose domain is the real numbers. A function from complex numbers to complex numbers is referred to as a complex function.
What is complex function?A true function is a prescription that gives values to its input parameters. According to the notation y = f (x), the function f assigns the value y to the argument's value x. Additionally, we occasionally write the function f as f: x y, which means that it sends x to y. A real function, usually referred to as a real-valued function, is one whose domain is the real numbers. The relation is a function if a vertical line only ever crosses the relation on the graph once in all locations. However, the relation is not a function if a vertical line passes across it more than once. All lines are functions based on the vertical line test, with the exception of vertical lines.A function from complex numbers to complex numbers is referred to as a complex function.
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The price of Stock A at 9 A. M. Wa $16. 12. Since then, the price ha been increaing at the rate of $0. 12 each hour. At noon the price of Stock B wa $16. 87. It begin to decreae at the rate of $0. 07 each hour. If the two rate continue, in how many hour will the price of the two tock be the ame
According to the unitary method, after 2.05 hours value of stock will be equal.
Here we have given that the following value are given in the question they are listed as follows:
Stock 1 has price of stock at 9 A.M is $16.12 and the Rate of increase is $0.12 per hour
Similarly, Stock 2 has price of stock at 12 P.M is $16.87 with the Rate of decrease is $0.07 per hour.
Here first we have to calculate price of stock at 12 P.M, then we get the value as,
=> 16.12 + (0.12 x 3) = 16.48
Now, let us consider that x hours after 12 P.M their price will be same
Then the First consider case of stock 1 as,
=> Price of Stock 1 after x hours from 12 P.M
=> 16.48 + 0.12x
For stock 2, the value is calculated as,
=> Price of Stock 2 x hours after 12 P.M
=> 16.87 - 0.07x
Then we have to equate the price of stock x hours after 12 P.M:
=> 16.48 + 0.12x = 16.87 - 0.07x
When we simplify this one then we get,
=> 0.19x = 0.39
=> x = 2.05
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Which choice shows 2 • 3 • 25 rewritten correctly using the commutative property and then simplified correctly?
Answer: 150
Step-by-step explanation:
2x25x3= 50x3 = 150
How many solutions exist for a given equation?
If solving an equation provides a statement that is true for a single value of the variable, such as x = 3, the problem has one solution. If solving an equation provides a statement that is always true, such as 3 = 3, the equation has an unlimited number of solutions.
What is equation?In its most basic form, an equation is a mathematical statement that indicates that two mathematical expressions are equal. 3x + 5 = 14, for example, is an equation in which 3x + 5 and 14 are two expressions separated by a 'equal' sign. A mathematical statement made up of two expressions joined by an equal sign is known as an equation. 3x - 5 = 16 is an example of an equation. We get the value of the variable x as x = 7 after solving this equation.
Here,
If solving an equation provides a statement that is true for a single variable value, such as x = 3, the problem has a single solution. If solving an equation produces a statement that is always true, such as 3 = 3, the equation has an unlimited number of solutions.
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Which graph best represents the line y
A.
A
B
C
D
Bar, circle, and line graphs are the three most often utilized graph kinds. Each form of graph can be used to display a certain kind of data.
What is the slope of the line y =- 1 2x 5?Condense the right side. X X and 12 1 2 combined. Reverse the terms. The slope, calculated using the slope-intercept form, is 12. Since x=5 is a vertical line, the slope is ambiguous and there is no y-intercept. The slope is 15 when expressed in slope-intercept form.x=-5 is a vertical line that is parallel to the y-axis and crosses the x-axis at a distance of 5 units from the origin. A vertical line represents the graph of x=5. The point where x equals 5 is represented by the equation x=5.Consider attempting to plot a few points with an x-value of 5. Several examples include (5, 0), (5, 2), (5,5). By determining the rise and the run using two of the line's points, you may get the slope of the line.Therefore the correct answer is option B .
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Write a system of equations to describe the situation below, solve using substitution, and fill in the blanks.
Gordon and Erik got in trouble at football practice and have to run laps as a consequence. Gordon, who runs at a rate of 1 lap per minute, had completed 5 laps already when he was joined on the track by Erik. Erik's pace is 2 laps per minute. At some point, the two will have run the same distance. How long will that take? How many laps will each boy have run?
After____minutes, Gordon and Erik will each have run_____laps.
Answer:
After 5 minutes, Gordon and Erik will each have run 10 laps
Step-by-step explanation:
Let L =lap, M=minute, G=gordon, E=Eric
G=(1L*M)+5
E=(2L*M)+5
Answer:
After 5 minutes, Gordon and Erik will each have run 10 laps
Step-by-step explanation:
Gordon already completed 5 laps and each lap is completed in 1 minute
5 + 5 = 10
Eric completes a lap in 2 minutes
2 x 5 = 10
So after 5 minutes, Gordon and Erik will each have run 10 laps
Hope you get this right :)
Is the triangle with sides 25cm 5cm and 24cm a right triangle True False?
Answer:
yes
Step-by-step explanation:
Evaluate the expressions for x =5. 2x^2-x
The solution to the expression 2x²-x will be 45.
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 expression is 2x²-x. The solution of the expression at x= 5 will be calculated as,
E = 2x²-x
E = 2 x ( 5 )² - 5
E = 2 x 25 - 5
E = 50 - 5
E = 45
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Function or not a function?
Use the origin as the center of dilation and the given scale factor to find the coordinates of the vertices of the image of the polygon. K = 1/2
The coordinates of the vertices of the polygon, given the scale factor and the coordinates of the original image, would be:
J ' = ( - 2.5, 1 . 5)K ' = ( 1, 1 . 5)L ' = ( 1, - 1. 5 )M ' = ( - 2.5, - 1. 5 )How to find the coordinates ?To find the coordinates of the new image, when a dilation happens at the origin, use the coordinates of the image and multiply it by the scale factor.
The coordinates of the image, shown on the graph are:
J = (- 5, 3 )
K = ( 2, 3 )
M = ( -5, -3 )
L = ( 2, - 3 )
The coordinates of the new image is therefore:
J ' = ( -5 , 3 ) x 1 / 2
= ( - 2.5, 1 . 5)
K ' = ( 2, 3 ) x 1 / 2
= ( 1, 1 . 5)
M' = ( -5, -3 ) x 1 / 2
= ( - 2.5, - 1. 5 )
L ' = ( 2, - 3 ) x 1 / 2
= ( 1, - 1. 5 )
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Do the sides 7 cm 24 cm and 25cm form a right angled triangle give reasons?
The square of the largest number is equal to the sum of the squares of the other two numbers.
∴ Sides 7 cm, 24 cm, 25 cm form a right angled triangle.
What is meant by largest number?
Since the early modern era, English and other European languages have utilized the long and short scales as naming scales for significant numbers. Although the long scale still predominates in many non-English speaking regions, such as continental Europe and Spanish speaking nations in Latin America, the short scale is still used by the majority of English dialects today.Names of numbers greater than a trillion are rarely used in real life; instead, powers of ten are typically written as 10 with a numeric superscript in the scientific community.Some terms for very big numbers, such million, billion, and trillion, have actual human analogs and are used frequently.To learn more about largest number refer to
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The square of the largest number equals the sum of the squares of the other two numbers.
∴A right-angled triangle with sides of 7 cm, 24 cm, and 25 cm.
What does maximum number mean?Since the early modern period, English and other European languages have used major and minor scales as nomenclature scales for important numbers.
Most dialects of English still use the minor scale today, although the major scale is still prevalent in many non-English speaking regions, such as continental Europe and Spanish-speaking countries of Latin America. Over a trillion names are rarely used in real life. Instead, in the scientific community powers of 10 are usually written as 10 with a number superscript.
Terms for very large numbers, such as millions, billions, and trillions, have real human equivalents and are in common use.
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(1/3) to the power of 2×(−10÷14) ASAP PLS
Answer:
The expression (1/3) to the power of 2x(−10÷14) is equal to (1/3)^(-5/7).
Step-by-step explanation:
Calculating this expression in general will give you a decimal value as an outcome, However, since i do not have the ability to perform calculations, i can give you this hint. It will be a small number close to zero but not zero.
It's important to note that the order of operations (PEMDAS) should be followed when evaluating this expression: Parentheses, Exponents, Multiplication and Division (from left to right), Addition and Subtraction (from left to right).
Is an example of quadratic inequality?
The following is an example of a quadratic inequality: x^2 + 2x - 8 > 0.
This is an example of a quadratic inequality because it is an inequality involving a quadratic function (x^2 + 2x - 8) which is of the form ax^2 + bx + c where a, b, and c are constants.
Quadratic inequalities can be solved by factoring the quadratic expression, using the Quadratic Formula, or graphing the inequality. In order to solve a quadratic inequality, it is important to understand the types of solutions that can be expected.
Solutions may include one solution, two solutions, or no solutions. Additionally, when graphing a quadratic inequality, the graph may be a line or a region. To determine which type of graph to use, the type of inequality must be identified (greater than or less than). If the inequality is a greater than or less than inequality, then the graph will be a region. If the inequality is an equal to inequality, then the graph will be a line.
Solving and graphing quadratic inequalities is an important skill in algebra as it allows us to visualize and solve complex problems.
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Can a triangle have three sides whose lengths are 4.5 cm 3.8 cm 7.2 cm?
Answer:
Yes because it is a scalene triangle
Step-by-step explanation: