A variable that takes on the values of 0 or 1 and is used to incorporate the effect of categorical variables in a regression model is called the dummy variable.
We know that,
A dummy variable is a binary variable that takes a value of 0 or 1.
In regression analysis, a dummy variable is one that takes only the value 0 or 1 to indicate the absence or presence of some categorical effect that may be expected to shift the outcome.
The number of dummy variables we must create is equal to k - 1, where k is the number of different values that the categorical variable can take on.
It is an artificial variable created to represent an attribute with two or more distinct categories/levels.
These are being used in order to sort out data into mutually exclusive groups.
It is used typically in time series analysis, response modelling, bio-medical studies, economic forecasting and credit scoring.
Therefore, a variable that takes on the values of 0 or 1 and is used to incorporate the effect of categorical variables in a regression model is called the dummy variable.
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Quick algebra 1 question for 10 points!
Only answer if you know the answer, quick shout-out to tariqareesha2 and MrBrainly, tysm for the help!
Answer:
B) x-intercept: (6, 0)
y-intercept: (0, 7)
Step-by-step explanation:
Given equation: [tex]7x + 6y = 42[/tex]
What are the x- and y-intercepts?
The x-intercept is the point where the line intersects the x-axis. In short, it is when y = 0 — [tex](x, y) \Rightarrow (x, 0)[/tex]. The y-intercept is where the line intersects the y-axis, which is when x = 0 — [tex](x, y) \Rightarrow (0, y)[/tex].
Find the x-intercept (by substituting 0 for y):
[tex]\\\implies 7x + 6y = 42\\\\\implies 7x + 6(0) = 42\\\\\implies 7x = 42\\\\\implies \dfrac{7x}{7}=\dfrac{42}{7}\\\\\implies \boxed{x=6}[/tex]
Coordinate: [tex](6, 0)[/tex]
Find the y-intercept (by substituting 0 for x):
[tex]\\\implies 7x + 6y = 42\\\\\implies 7(0) + 6y = 42\\\\\implies 6y = 42\\\\\implies \dfrac{6y}{6}=\dfrac{42}{6}\\\\\implies \boxed{y=7}[/tex]
Coordinate: [tex](0, 7)[/tex]
Ben invests Nu 125,000 in a bank shares with a face value of Nu 100 but they are being sold at a premium of 25%. How many shares can he buy?
Answer:
This is your answer!
Step-by-step explanation:
(3x^{4} +3x^{3}+5x^{2})-(x^{4}-6x^{3}+5x^{2} )
Answer: x^{3}(2x+9)
Step-by-step explanation:
Eliminate redundant parentheses:
(3x^{4}+3x^{3}+5x^{2})-1(x^{4}-6x^{3}+5x^{2})
3x^{4}+3x^{3}+5x^{2}-1(x^{4}-6x^{3}+5x^{2})
Distribute:
^{4}+3x^{3}+5x^{2}{-1(x^{4}-6x^{3}+5x^{2})}
3x^{4}+3x^{3}+5x^{2}
Combine like terms UNTIL YOU FIND ONE FACTOR
In quadrilateral qrst, angle r s t measures (5x 15)°. angle tqr measures (4x 3)°. circle p is inscribed with quadrilateral q r s t. what is the measure of angle rst?
The measure of the angle rst is [tex]105^{o}[/tex].
What is the inscribed quadrilateral theorem?According to the theorem, a quadrilateral can be inscribed by a circle if and only if its opposing angles are supplementary. A quadrilateral that may be encircled by a circle is known as a cyclic quadrilateral.
The sum opposite angles of a quadrilateral is 180 degrees.
We can see that the angles rst and angle tqr are opposite angles of quadrilateral qrst, hence supplementary angles.
Therefore,
<RST + <TQR = 180
5x+15 + 4x+ 3 = 180
9x + 18 = 180
9x = 180 - 18
9x = 162
x = 162/9
x = 18
Since <RST = 5x+15
<RST = 5(18) + 15
<RST = 90 + 15
<RST = 105degrees
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Is there anyone who help me in my math work
Answer:
LCM=72
Step-by-step explanation:
l.c.m by prime factorization
a)18,24
factor of 18=2*3*3
factor of 24=2*2*2*3
common and remaining factor=2*3*3*2*2= 72
WILL VOTE BRAINLIEST TO THE FIRST CORRECT ANSWER
Answer:
D
Step-by-step explanation:
The D answer choice is the correct functions needed to create the pictured graph, I have pictured these functions in a graphing calculator below
Find the explicit form of the arithmetic function of p if the first term is 12 and the common difference is 2. Then find the seventh term.
The explicit form of the arithmetic function as described is; f(p) = 2(p-1) + 12. and the seventh term is; 24.
What is the seventh term of the arithmetic function?Since it follows from the task content, that the first term is 12 and the common difference is 2.
It therefore follows from convention that the explicit function is; f(p) = 2(p-1) + 12 and by substituting n= 7 into, the equation, we have; f(7) = 24.
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HELPPPP (x-y)^3-(y-x)^2
Answer:
(x-y)(x-y)(x-y)= x²-yx+x²-yx-yx+y²-yx+y²
2x²-4yx+2y²
(y-x)(y-x)= y²-yx-yx+x²
y²-2yx+x²
-(y²-2yx+x²) = -y²+2yx-x²
2x²-4yx+2y²-y²+2yx-x²= x²-2yx+y²
or
(x−y−1)(x−y)² ≡ x³−x²+3xy²+2xy−y³−y²−3yx³
The graph of the step function g(x) = –⌊x⌋ + 3 is shown.
On a coordinate plane, a step graph has horizontal segments that are each 1 unit long. The left end of each segment is a closed circle. The right end of each segment is an open circle. The left-most segment goes from (negative 2, 5) to (negative 1, 5). Each segment is 1 unit lower and 1 unit farther to the right than the previous segment. The right-most segment goes from (4, negative 1) to (5, negative 1).
What is the domain of g(x)?
{x| x is a real number}
{x| x is an integer}
{x| –2 ≤ x < 5}
{x| –1 ≤ x ≤ 5
Using it's concept, the domain of the function is given as follows:
{x| –2 ≤ x <= 5}
What is the domain of a function?The domain of a function is the set that contains all possible input values for the function, that is, the values for which the function is defined.
The function described in this problem is defined from x = -2 until x = 5 hence the domain of the function is given as follows, by the interval:
{x| –2 ≤ x <= 5}
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Answer:
So I got 64 on my test, but it doesn't let you see what was right and what was wrong, so I guess we will never know☹️☹️☹️☹️.
BTW in was on edge
help!!!! if u don't know DONT answer PLEASE. ty!
We have to fill in the table that we have in the question with the following values as the solution
a. log6⁰, log 2 . 1, log 8/3
b. log 1 .4 , 1 , log 4. 6
c. log 9/2, log 3. 5 , log 5⁷
How to find the logarithm of a numberTo do this, you have to decide on that particular number that you want to find the logarithm on. Next you have to find the base of that number.
The logarithm of the number is the power that it would have to be raised for us to obtain a different number.
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35 Points + Brainest
Answer:
5/12a + 1/3b
Step-by-step explanation:
2/3a + 1/6b + (-1/6a) + 3/18b + (-1/12a)
[2/3a + (-1/6a) + (-1/12a)] + [3/18b + 1/6b]
5/12a + 1/3b
23-2(17+3^3)
Sjshjshdjsjshs
Answer:
-65
Step-by-step explanation:
23-2(17+3^3)
23-2(17+27)
23-2(44)
23-88
=-65
math related!!!! What are the restrictions on the variable
in the quotient
See my explanation in the pic
Help!! PLSS
what can be to total of 100% if divided by four percentage?
__%
__%
__%
__%
=100%
Step-by-step explanation:
I am not sure I understand your question (grammatically).
percentages are like any other numbers. they can be added, divided, ...
so, 100% or simply 100 : 100/4 = 25.
so, 4×25 = 100.
and 4×25% = 100%
I am really not sure if this is your question, but it fits to your table with 4 entries and 100% as result.
piecewise function f (x) is defined by f of x is equal to the piecewise function of 3 to the power of the quantity x minus 1 end quantity minus 4 for x is less than or equal to 3 and the quantity negative x squared plus 3 times x plus 4 end quantity over the quantity x squared minus 7 times x plus 12 end quantity for x is greater than 3 Part A: Graph the piecewise function f (x) and determine the range. (5 points) Part B: Determine the asymptotes of f (x). Show all necessary calculations. (5 points) Part C: Describe the end behavior of f (x). (5 points)
The range of the function f(x) is (-∝, 3]
Part A: Graph the piecewise functionThe function definition is given as:
[tex]f(x) = \left[\begin{array}{cc}3^{x-1}-4&x\le 3\\ \frac{-x^2 + 3x + 4}{x^2 - 7x + 12}&x > 3\end{array}\right[/tex]
There are two sub-functions and the domains in the above definition.
Each function would be plotted alongside its domain.
See attachment for the graph of the function f(x)
From the graph of the function, we have the following range of f(x)
Minimum = Negative Infinity
Maximum = 5
Hence, the range of the function f(x) is (-∝, 3]
The asymptotes of f(x)We have the domains to be
x <= 3 and x > 3
This means that the asymptote of f(x) is x = 3
The end behavior of f(x)From the graph, we have:
f(x) increases as x increasesf(x) decreases as x decreasesThis means that the end behavior of f(x) is as x approaches +∝, the function approaches +∝ and as x approaches -∝, the function approaches -∝
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Complete question
A piecewise function f (x) is defined by
[tex]f(x) = \left[\begin{array}{cc}3^{x-1}-4&x\le 3\\ \frac{-x^2 + 3x + 4}{x^2 - 7x + 12}&x > 3\end{array}\right[/tex]
Consider this equation.
Use the graph to find the approximate solutions to this equations
The equation be 2(x-2)-5=√x+3-1 then the graphical solution of the equations exists approximately x = 3 and x = 6.
What is the solution of the equation?The solution of an equation creates that equation true.
The equation of can be simplified, therefore:
2(x-2)-5=√x+3-1
simplifying the above equation, we get
2x -9 =√x+2
4 x²-37x + 79 = 0
The graphical solution of the equations exists at approximately x = 3 and
x = 6
In ending, the solution of an equation makes the equation true.
Therefore, the graphical solution of the equations exists approximately x = 3 and x = 6
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Two circles are shown in the diagram.
Circles C 1 and C 2 are shown. The diameter of circle 1 is 1. The diameter of circle 2 is 2 r.
Since all circles are similar, a proportion can be set up using the circumference and diameter of each circle. Substitute the values d1 = 1, C1 = π, and d2 = 2r into the proportion.
StartFraction C 1 Over d 1 EndFraction = StartFraction C 2 Over d 2 EndFraction
Which shows how to correctly solve for C2, the circumference of any circle with radius r?
Because StartFraction pi Over 1 EndFraction = StartFraction C 2 Over 2 r EndFraction , C 2 = 2 r pi
Because StartFraction 1 Over pi EndFraction = StartFraction C 2 Over 2 r EndFraction , C 2 = StartFraction 2 r Over pi EndFraction
Because StartFraction pi Over 2 r EndFraction = StartFraction C 2 Over 1 EndFraction , C 2 = StartFraction pi Over 2 r EndFraction
Because StartFraction pi Over 1 EndFraction = StartFraction C 2 Over 4 r EndFraction , C 2 = 4 r pi
The correct equation is (a) because π/1 = C2/r2, [tex]C_2= 2\pi r[/tex]
How to determine the correct equation?The complete question is added as an attachment
The given parameters are:
d1 = 1
d2 = 2r
The circumferences of the circles are calculated as:
C = πd
This gives
C1 = π * 1 = π
C2 = π * 2r = 2πr
So, we have:
C1 = π
C2 = 2πr
and
d1 = 1
d2 = 2r
Divide both equations
[tex]\frac{C_2}{d_1} = \frac{C_2}{d_2}[/tex]
[tex]\frac{\pi}{1} = \frac{2\pi r}{2r}[/tex]
This gives
[tex]\frac{\pi}{1} = \frac{C_2}{2r}[/tex]
Hence, the correct equation is (a) because π/1 = C2/r2, [tex]C_2= 2\pi r[/tex]
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Answer:
Its A
Step-by-step explanation:
Use the laplace transform to solve the given initial-value problem. y'' − 6y' 13y = 0, y(0) = 0, y'(0) = −9
The Laplace transformation of given equation is [tex]y=-\frac{9}{2}e^{3t}\sin \left(2t\right)[/tex].
According to the statement
we have given that the equation and we have to find the Laplace transformation of that equation.
So, For this purpose, we know that the
Laplace transformation is an integral transform that converts a function of a real variable to a function of a complex variables.
And the given equation is
y'' − 6y' + 13y = 0, y(0) = 0, y'(0) = −9
To convert into the Laplace transformation
firstly find the single derivative of given equation in the Laplace transformation and put y = -9 in this.
And now find second derivative of given equation in the Laplace transformation.
And and put y = 0 in the given equation.
After the Laplace transformation give value as a Laplace transformation is [tex]y=-\frac{9}{2}e^{3t}\sin \left(2t\right)[/tex].
So, The Laplace transformation of given equation is [tex]y=-\frac{9}{2}e^{3t}\sin \left(2t\right)[/tex].
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A student is constructing a pair of perpendicular lines using a compass and ruler. Here are her first steps:
Step 1: The student draws her first line and labels it l. She marks a point A (not on the first line) for the second line to pass through.
Step 2: She puts the compass point on A and draws an arc that intersects l at two points. She labels the points B and C.
Step 3: Without changing the compass setting, she puts the compass point on B and draws a large arc.
What should be her next step?
The next step she should take is to use her ruler to join the given point to the point where the arcs intersect.
Steps in constructing perpendicular linesPlace your compass on the given point Draw an arc across the line on each side of the given point. Do not adjust the compass width when drawing the second arcFrom each arc on the line, draw another arc on the opposite side of the line from the given point. The two new arcs will intersect.Use your ruler to join the given point to the point where the arcs intersect.Use your compass and ruler to draw a perpendicular line from each given point to the line segmentFrom this, we can deduce that her next step is to use her ruler to join the given point to the point where the arcs intersect
Thus, the next step she should take is to use her ruler to join the given point to the point where the arcs intersect.
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What are the parentheses doing in this sentence? Javier (in spite of his reservations) decided to go to the house party. Choose 1 answer: Choose 1 answer: (Choice A) A Showing a comment the writer is making (Choice B) B Showing an interruption in dialogue
The parentheses role in the sentence of Javier (in spite of his reservations) decided to go to the house party is that it shows a comment the writer is making.
What is parentheses?The parentheses is known to be a kind of a word or phrase that is said to be often inserted as a form of an explanation or what we call an afterthought into what the writer is meaning to say or portray.
Note that the statement is not grammatically complete without the use of it hence it is often used in writing and marked off by the use of brackets, dashes, or commas.
Therefore, The parentheses role in the sentence of Javier (in spite of his reservations) decided to go to the house party is that it shows a comment the writer is making.
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I need help with this question
Answer:
2.72 / 16 x 28 = $4.76
Step-by-step explanation:
Since they give you $2.72 for 16 ounces you put in:
2.72 / 16 x 28 = $___
Then you just solve it to get $4.76:
2.72 / 16 = 0.17
0.17 x 28 = 4.76
Use a right-hand sum with 4
intervals to approximate the area
under f(x) = 4 - x² between
x = 0 and x = 2.
Answer:
17 / 4
Step-by-step explanation:
To find the right sum, you need to....
Step #1: Find Δx
Step #2: Find [tex]x_k[/tex]
Step #3 Make the right-hand sum equation: ∑[tex]^n_{k=1}f(x_k)[/tex]Δx
Step #4: Solve the right-hand sum equation
Eight and one-half foot-pounds of work is required to compress a spring 4 inches from its natural length. Find the work required to compress the spring an additional one-half inch. (Round your answer to two decimal places.) ft-lb
Using proportions, it is found that the work required to compress the spring an additional one-half inch is of 1.0625 ft-lb.
What is a proportion?A proportion is a fraction of a total amount, and the measures are related using a rule of three. Due to this, relations between variables, either direct or inverse proportional, can be built to find the desired measures in the problem.
For 4 inches, 8.5 ft-lb of work is needed, hence for a single inch the amount needed is:
8.5/4 = 2.125.
Hence for half an inch, the amount if:
0.5 x 2.125 = 1.0625 ft-lb.
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A cell's expected frequency is: Group of answer choices the number of people in the cell's row multiplied by the number of people in the column the number of people in its column divided by the total number of people, divided by the row proportion the number of people in its row multiplied by the number in its column divided by the total number of people the number of people in the cell's row divided by the number of people in the column
A cell's expected frequency can be defined as the number of people in its row divided by the total number of people, multiplied by the number in its column and is therefore denoted as option C.
What is Frequency?This is defined as the number of occurrences of a repeating which takes place per unit time.It also helps to measure how frequent something occurs when counted or observed and is also used in the calculation of the different types of statistical data present or given.
This type of frequency is theoretical and are values which will most likely be in an experiment. it is calculated by multiplying the number in its column by the number of people in the row and dividing by the total number of people in this context.
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a. A number is doubled and then increased by 2, the result is equal to 14 more than
5 times the number. What is the number?
Answer:
OK
Let x=the number
2x=double the number
2x+5=the doubled number increased by 5
And we are told that this equals -47
sooooo
2x+5=-47 subtract 5 from each side2x=-47-5=-52
2x=-52
x=-26------the number
CK
2*(-26)=-52
-52 increased by 5=-52+5=-47
-47=-47
Hope this helps- Clara ☆*: .｡. o(≧▽≦)o .｡.:*☆
Step-by-step explanation:
❄ Hi there,
let us start by letting the number be r. The problem tells us that r is doubled and then increased by 2.
This is what it looks like –
[tex]\triangleright \ \sf{2r+2}[/tex]
Also the result is 14 more than 5r.
We end up with an equation that looks like this –
[tex]\triangleright \ \sf{2r+2=14+5r}[/tex]
To find the number we should solve the equation for r –
[tex]\large\begin{gathered} \sf{2r+2=14+5r} . \ Solve \ for \ r: \\ \sf{2r-5r+2=14}\\ \\ \sf{-3r+2=14}\\\sf{-3r=14-2}\\\sf{-3r=12}\\\sf{-r=4}\\\sf{r=-4}\end{gathered}[/tex]
❄
While walking between gates at an airport, you notice a child running along a moving walkway. Estimating that the child runs at a constant speed of 2. 4 m/s relative to the surface of the walkway, you decide to try to determine the speed of the walkway itself. You watch the child run on the entire 18-m walkway in one direction, immediately turn around, and run back to his starting point. The entire trip takes a total elapsed time of 32 s. Given this information, what is the speed of the moving walkway relative to the airport terminal?.
The speed of the moving walkway relative to the airport terminal exists at 1.84 m/s.
How to estimate the speed of the moving walkway relative to the airport terminal?Let x be the speed of the walkway.
(2.8 + x) = speed of child moving in direction of the walkway
(2.8 - x) = speed of child moving against the direction of the walkway
Travel time = distance/speed
Travel time of child moving in direction of walkway = 23/(2.8+x)
Total elapsed time given = 29s
23/(2.8 + x)+ 23 / (2.8-x) = 29
LCD = (2.8 + x)(2.8 - x)
[tex]23(2.8 - x) + 23(2.8 + x) = 29(2.8 + x)(2.8 -x)[/tex]
simplifying the equation, we get
[tex]23*2.8-23x+23*2.8+23x=29(2.8^2-x^2)[/tex]
[tex]23(2.8+2.8)/29=2.8^2-x^2[/tex]
[tex]x^2=(2.8)^2-(23*5.6)/29)=3.4[/tex]
[tex]x=\sqrt{3.4}=1.84m/s[/tex]
Speed of walkway = 1.84 m/s
The speed of the moving walkway relative to the airport terminal exists at 1.84 m/s.
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True or false? the patient should be given a receipt for payments on account even if the account is not paid in full.
Answer:
Step-by-step explanation:
true
Answer:
False because the account isn't full
Help me for this easy question which is no for me!!!!
Answer:
4c=12
c=3
Step-by-step explanation:
Since 4c's make up one 12, it is safe to assume that 4c=12. This results in c=3 once simplified.
Answer:
4c = 12.
Step-by-step explanation:
There are 4 of the same objects marked c.
A man gets Rs. 40 for everyday he works, but is fined Rs. 10 for everyday he is absent If he got Rs. 700 at the end of 30 days. How many days he was absent from the work?
Answer:
50 days
Step-by-step explanation:
40×300=1200
1200-700
500
so 1 day is 10 . 50 days is 500
The number of days he was absent from work will be 50 days
What is an expression?Expression in maths is defined as the collection of the numbers variables and functions by using signs like addition, subtraction, multiplication, and division.
Numbers (constants), variables, operations, functions, brackets, punctuation, and grouping can all be represented by mathematical symbols, which can also be used to indicate the logical syntax's order of operations and other features.
Given that a man gets Rs. 40 for every day he works, but is fined Rs. 10 for every day he is absent If he got Rs. 700 at the end of 30 days.
The number of days he was absent from work will be calculated as below:-
40×300 = 1200
= 1200-700
= 500
1 day is 10 then 50 days is 500. Therefore, the number of days he was absent from work will be 50 days
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What percent of zachary's pay do his deductions comprise? round your answer to the nearest whole percent.
The percentage of Zachary's pay due to his deductions comprise exists 18.724%.
How to estimate the deduction percentage for Zachary?Zachary exists supposed to earn a paycheck of $20,160.00 but instead, he acquires a lesser amount of money due to deductions. The money he acquires after deductions exists at $16,385.31.
Money deducted = Original paycheck amount - deductions
= $20,160.00 - $16,385.31
= $3,774.69.
So Zachary obtains a deduction of $3,774.69.
To estimate the percent of deductions in terms of his pay we divide the deduction cost with the original paycheck amount and multiply it by 100 to transform it into a percentage.
Deduction % = ($3,774.69 / $20,160.00) [tex]*[/tex] 100
= 0.1872366 [tex]*[/tex] 100
= 18.72366%
We obtain the deduction percentage as 18.724%.
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