Answer:
The standard form of a linear equation is Ax+By=C. To change an equation written in slope-intercept form (y=mx+b) to standard form, you must get the x and y on the same side of the equal sign and the constant on the other side.
Step-by-step explanation:
Consider the function. what is the x-intercept of f–1(x)?
The x intercept of f-1(x) is the y intercept of f(x). The y intercept of f-1(x) is the x intercept of f(x). A horizontal asymptote for f(x) produces a vertical asymptote for f-1(x). A vertical asymptote for f(x) produces a horizontal asymptote for f-1(x).
(2 1/2, 0)
f(x) = 2 1/2 - 3 1/3 * x
or
f(x) = 5/2 - (10/3)*x
f^-1(x) is the inverse of f(x), which is obtained replacing f(x) by x, and x by y, and solving for y, as follows:
x = 5/2 - (10/3)*y
(10/3)*y = 5/2 - x
y = (5/2)*(3/10) - x*(3/10)
y = (3/4) - (3/10)*x
f^-1(x) = (3/4) - (3/10)*x
at x-intercept, f^-1(x) = 0,
(3/4) - (3/10)*x = 0
(3/4) = (3/10)*x
x = (3/4)*(10/3)
x = 5/2 or 2 1/2
the set of complex numbers $z$ such that the real part of $1/z$ is equal to 1/6 forms a curve. find the area of the region inside the curve.
The area of this region is equal to [tex]\pi \cdot (\sqrt{35})^2 = 35\pi[/tex]
The equation for the set of complex numbers z such that the real part of 1/z is equal to 1/6 is given by:
Re(1/z) = 1/6
Since 1/z = 1/x + i/y,
Where x and y are the real and imaginary parts of z, respectively,
we can write the equation as:
(1/x)=(1/6) and [tex]$\frac{y}{x^2 + y^2} = \frac{1}{6}$[/tex]
From the first equation,
we have x = 6.
Substituting this value into the second equation, we get:
[tex]$\frac{y}{36 + y^2} = \frac{1}{6}$[/tex]
Solving for y,
we find that [tex]$y = \pm \sqrt{35}$[/tex].
So, the set of complex numbers z that satisfies the equation forms a circle centred at 6 + 0i with radius [tex]$\sqrt{35}$[/tex].
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Starting at noon, Justin observed the amount of snow on his lawn during a blizzard. He created a graph to represent how many inches of snow were on the lawn at � x minutes past noon. What does the y-intercept in the graph represent?
The y intercept represents the amount of snow in inches on his lawn at noon
What is an equation?An equation is an expression that uses mathematical operations to show the relationship between numbers and variables. Types of equations are linear, quadratic, cubic and so on.
The standard form of a linear equation is:
Ax + By = C
Where A, B and C are constants
The slope intercept form of a linear equation is:
y = mx + b
Where m is the slope and b is the y intercept
If y represents the number of inches of snow on the lawn at x minutes past noon.
The y intercept represents the amount of snow on his lawn at noon
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Question 13
Subtract and simplify: 81xy4 - yx, where x ≥ 0 and y ≥ 0.
O 2xy
3√√xy4-y√√x
03
3xy-xy
The expression 81xy^4 - yx cannot be simplified
How to simplify the expressionFrom the question, we have the following parameters that can be used in our computation:
81xy4 - yx
Express properly
So, we have the following representation
81xy^4 - yx
This expression can be rewritten a
81xy^4 - xy
There are no like terms in the above expression
This means that the expression cannot be simplified
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The dimensions of a triangular prism are shown in the diagram. What is the volume of the triangular prism in cubic centimeters V=LxWxH divided by two which is 8x12x34 divided by 2 equals
The volume of the triangular prism in cubic centimeters is 1, 632 cm³
How to determine the volume of the triangular prismThe formula for calculating the volume of a triangular prism is expressed as;
V = L × W × H÷ 2
Such that the parameters are;
V is the volume of the triangular prismL is the length of the triangular prismW is the width of the triangular prismH is the height of the triangular prismNow, substitute the values, we get;
Volume, V = 8 × 12 × 34/2
Multiply all the values
Volume, V = 3264/2
Divide the numerator by the denominator
Volume, V = 1, 632 cm³
Hence, the value is 1, 632 cm³
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what is the largest even integer which cannot be written as the sum of two odd composite numbers? (recall that a positive integer is said to be composite if it is divisible by at least one positive integer other than 1 and itself.)
Largest even integer which cannot be written as the sum of two odd composite numbers is 38 if it is divisible by at least one positive integer other than 1 and itself.
The positive even integers which cannot be expressed as the sum of 2 composite odd numbers are: 2,4,6,8,10,12,14,16,20,22,26,28,32,38. This sequence is A118081.
All we have to do now is check the even numbers smaller than 44
. The largest, 42 is a multiple of 3 so it’s handled as 42=9+33 and the next one down, 40 is handled as 40=25+15.But the next one down is our culprit: 38 is not the sum of two odd composite numbers, as you can readily check.
First, what are these “odd composite numbers” anyway? The number 1is considered neither prime nor composite (it’s a unit), so it’s out. 3,5 and 7 are prime. The smallest odd composite number is, therefore, 9 and the next one is 15 .So we have 18=9+9 24=9+1 and 30=15+15 as some even numbers which can be written as a sum of two odd composites, but so far it doesn’t look promising: plenty of even numbers, like 10 or 20 or 32 cannot be so written.
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Please answer the waiting with one of the choices in the image.
A statement about the data which must be true include the following: A. The spread from the lower quartile to the median is greater than the spread from the median to the upper quartile.
What is a box plot?In Mathematics, a box plot is a type of chart that is used for the graphical or visual representation of the five-number summary of a data set with respect to locality, skewness, and spread.
Based on the information provided above, the five-number summary for the given data set include the following:
Minimum = 1.Lower quartile (first) = 4.Median = 7.Upper quartile (third) = 9.Maximum = 15.Spread from lower quartile (first) to median = 7 -4 = 3
Spread from median to upper quartile (third) = 9 - 7 = 2
Therefore, the spread from lower quartile (first) to median is greater than the spread from median to upper quartile (third).
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NEED HELP PLEASE
Quiz 10-1: Intro to Circles, Central Angles & Arcs, Arc Lengths 1-16
The answers are given in the solution below.
What is a circle?A circle is a round-shaped figure that has no corners or edges. In geometry, a circle can be defined as a closed, two-dimensional curved shape.
Given is topics related to circle and its part we need to answer the question asked,
1) to 7) Given is a circle T,
a) Radius = TS, QT and RT all are the radius
b) Diameter = QS
c) Chord = PS
d) Central angle = ∠ RTQ
e) Minor arc = arc QR
f) Major arc = arc QSR
g) Semicircle = QPS
8) to 9) :-
a) Circle with radius 18 in :-
Circumference = 2π×radius = 2×3.14×18 = 113.04 in
Area = π·radius² = 3.14×18² = 1017.36 in²
b) Circle with diameter 25 m :-
Circumference = 2π×radius = 2×3.14×12.5 = 78.5 m
Area = π·radius² = 3.14×12.5² = 490.625 m²
10) The circle is having an area of 201.06 cm², we need to find the circumference and diameter,
Area = π·radius² = 201.06 cm²
radius² = 201.06 / 3.14
= 64
radius = 8 cm
Diameter = 16 cm
Circumference = 2π×radius = 2×3.14×8 = 50.24 cm
11) :-
Circle with radius P :-
The rule we will use here is :- arcs equal to central angle opposite to it, and full circle measures 360°
a) ∠ KPL = 90°
So, by linear pair sum, ∠ NPL = 90°
Now, by angle substitution law, ∠ NPM + ∠ MPL = 90°
∠ NPM = 27°
By using vertical angles rule, ∠ JPK = ∠ NPM = 27°
Therefore, arc JK = 27°
b) arc NJ = 180° - 27° = 153°
c) arc JL = 90°+27° = 117°
d) arc KNM = 360°-(90°+63°) = 207°
e) arc MJL = 360°-63° = 297°
f) arc JLK = 360°-27° = 333°
12) :-
arc CD + arc AD = 180°
Therefore,
19x-49°+5x+37° = 180°
24x-12 = 180°
24x = 192°
x = 8
Therefore,
arc CD = 5x+37 = 74°
13) :-
Length of an arc = central angle / 360° × 2π×radius
= 232° / 360° × 2 × 3.14 × 5 = 20.23 mm
14) :-
= 73° / 360° × 2 × 3.14 × 14.5 = 18.46 ft
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Help I’ll mark you, find x y and z
Answer:
x=54⁰ y= 43⁰ z= 83⁰
Step-by-step explanation:
z=180⁰-97⁰
83⁰ opposite angles add upto 180⁰
y= 43⁰
x= 83⁰+43⁰=126⁰
180⁰-126⁰= 54⁰ (alternate angles)
if u is a subspace of a finite dimensional vector space can it be an infinite dimensional vector space?
No a subspace of a finite dimensional vector space cannot be an infinite dimensional vector space
This is due to the fact that a subspace is a subset of a larger vector space and must have the same dimension as its parent vector space. In other words we can say that, if the parent vector space is finite dimensions,then the subspace must be as well.
To put it in another way, a vector space is finite dimensional if it can be traversed by a limited number of vectors. A subspace can only be spanned by a subset of the vectors that span the parent vector space since it is a subset of a larger vector space. As a result, if the parent vector space has finite dimensions, the subspace must be as well.
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if the number of hot lunches sold at school this week was 1,350 and the relative frequency on friday was 0.22, how many lunches were sold on friday?
296 hot lunches were sold on Friday.
The number of hot lunches sold on Friday can be calculated by multiplying the total number of hot lunches by the relative frequency on Friday:
Hot lunches sold on Friday = 1,350 * 0.22 = 296
What is Relative frequency ?Relative frequency is a measure of the number of times an event occurs in a sample, expressed as a proportion of the total number of events. To find the number of hot lunches sold on Friday, we multiply the total number of hot lunches sold in the week by the relative frequency of Friday. This gives us the number of hot lunches sold on Friday, which is 296 in this case. Understanding relative frequency is important in statistics as it helps to summarize data and understand the distribution of events.
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Linda is a salesperson for Spooner's Cleaning Service, which cleans office buildings. She receives a 14% commission for every office that signs a contract for the cleaning services. Last week she received $1,233.60 in commissions. What was the total value of the cleaning contracts she sold, rounded to the nearest dollar?
She sold $8,811 worth of cleaning contracts in total, rounded to the nearest dollar.
What is algebraic Expression?Any mathematical statement that includes numbers, variables, and an arithmetic operation between them is known as an expression or algebraic expression. In the phrase 4m + 5, for instance, the terms 4m and 5 are separated from the variable m by the arithmetic sign +.
Given, Linda receives a 14% commission for every office that signs a contract for the cleaning services.
Here, we are interested in calculating the value of the cleaning contracts sold.
Let the total value of the cleaning contracts sold to be $x
Mathematically;
14% of x = 1233.60
14/100 * x = 1233.60
14x = 100 * 1233.60
x = 123360/14
x= 8,811.43
Therefore, the total value of the cleaning contracts she sold, rounded to the nearest dollar will be $8,811.
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Write a linear function f with the given values.
x
-4
-2
0
f(x) =
f(x)
-2
-1
0
Answer:
f(x) = [tex]\frac{1}{2}[/tex] x
Step-by-step explanation:
a linear function has the form
f(x) = ax + b
to find a and b substitute ordered pairs from the table into f(x)
using (0, 0 )
0 = a(0) + b
0 = b
then
f(x) = ax + 0
using (- 4, - 2 )
- 2 = a(- 4) = - 4a ( divide both sides by - 4 )
[tex]\frac{-2}{-4}[/tex] = a , that is
a = [tex]\frac{1}{2}[/tex]
Then
f(x) = [tex]\frac{1}{2}[/tex] x
or
f(x) = 0.5x
The citizens of a city were asked to choose their favorite type of pet. The circle graph shows how the citizens answered. If 140,000 citizens answered the question, how many chose Dog?
Snake
6%
Hamster
8%
Cat
22%
Bird
25%
Dog
23%
Fish
16%
Please help.
Graph RST with vertices R(4,1), S(7,3), and T(6, 4) and its image after the glide reflection.
Translation: (x,y) →(x, y-1)
Reflection: in the y -axis.
Answer:
Points R(4,1) S(7,3) T(6,4) after translation
R(4-3, 1) S(7-3, 3) T(6-3, 4)
R'(1, 1) S'(4, 3) T'(3, 4)
Points R'(1, 1) S'(4, 3) T'(3, 4) after reflection
R''(1, -3) S''(4, -5) T''(3, -6)
Step-by-step explanation:
Answer:Step-by-step explanation:Points R(4,1) S(7,3) T(6,4) after translation R(4-3, 1) S(7-3, 3) T(6-3, 4) R'(1, 1) S'(4, 3) T'(3, 4) Points R'(1, 1) ...
The diameter of a circle measures 18cm. What is the circumference of the circle?
Use 3.14 for π, and do not round your answer. Be sure to include the correct unit in your answer.
Answer:
56.52cm
Step-by-step explanation:
2r = 18cm
r = 9cm
[tex]c = 2r\pi[/tex]
C = 2 × 9 × 3.14
C = 56.52cm
n is an integer
write the values of n such that -15<3n<6
The values of n in -15<3n<6 are -4, -3, -2, 1, 0 and 1
How to determine the values of nFrom the question, we have the following parameters that can be used in our computation:
-15<3n<6
Divide through by 3
So, we have the following representation
-5 < n < 2
The values in this range are -4, -3, -2, 1, 0 and 1
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Combine like terms
5p + 11 + 8p-4
Suppose y varies directly as x, and y = 27 when x = - 9 Find x when y is 51.
So, value of when y is 51, x is -17.
How can we prove it ?When y varies directly as x, the relationship between y and x can be expressed as y = kx, where k is the constant of proportionality. In this case, we know that y = 27 when x = -9, so we can use this information to find k:
27 = k * -9
27/-9 = k
-3 = k
Now that we have found the value of k, we can use it to find x when y is 51:
y = kx
51 = -3x
x = 51/-3
x = -17
So, when y is 51, x is -17.
What are linear equation ?A linear equation is an equation that represents a straight line when plotted on a graph. It has the form y = mx + b, where m is the slope of the line and b is the y-intercept. The slope represents the rate of change of y with respect to x, and the y-intercept represents the point at which the line intersects the y-axis. Linear equations can be used to model real-world situations that exhibit a constant rate of change, such as the relationship between time and distance traveled, or the cost of a product and the number sold.
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there is a smallest positive integer. c) all obtuse triangles have one angle that measures larger than 90o. d) there is a student in the class who helps all classmates.
a) Every Engineer loves to solve some problem.
x ∀ y(E(x) ∧ A(y) → ~L(x, y))
b) There is a smallest positive integer.
∀ x y(N(x) ∧ M(y) → x < y)
c) All obtuse triangles have one angle that measures larger than 90°.
x(A(x) → ~B(x) ∨ ~E(x))
d) There is a student in the class who helps all classmates.
∀x ∀y(C(x) ∧ A(y, x) → ~B(x, y))
a) Every Engineer loves to solve some problem.
The statement using multiple quantifiers and variables.
Let E(x) = x is an engineer
A(x) = x is a problem.
L(x, y) = x loves to solve probability
The negation of the given statement in words.
Negation: There exists at least one engineer who does not love to solve any problem.
The negation using multiple quantifiers and variables.
x ∀ y(E(x) ∧ A(y) → ~L(x, y))
b) There is a smallest positive integer.
The statement using multiple quantifiers and variables.
Let M(x) = x is a negative integer.
x ∀ y(M(x) ∧ M(y) → x ≥ y)
The negation of the given statement in words.
There exists no longer negative integer.
The negation using multiple quantifiers and variables.
∀ x y(N(x) ∧ M(y) → x < y)
c) All obtuse triangles have one angle that measures larger than 90°.
The statement using multiple quantifiers and variables.
Let A(x) = x is healthy.
B(x) = x follow diet plan.
C(x) = x follows exercise plan.
∀ x (A(x) → B(X) ∧ C(x))
The negation of the given statement in words.
There exists at least one healthy man who does not follow either diet plan or exercise plan.
The negation using multiple quantifiers and variables.
x(A(x) → ~B(x) ∨ ~E(x))
d) There is a student in the class who helps all classmates.
The statement using multiple quantifiers and variables.
Let A(y, x) = y is classmate of x.
B(x, y) = x helps y.
C(x) = x is a student in the class.
x ∀ y (C(x) ∧ A(y, x) → B(x, y))
The negation of the given statement in words.
There is no student in the class who helps all classmates.
The negation using multiple quantifiers and variables.
∀x ∀y(C(x) ∧ A(y, x) → ~B(x, y))
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The complete question is:
For each of the statements in a, b, c, and d do the following:
(i) Rewrite the statement using multiple quantifiers and variables.
(ii) Write the negation of the given statement in words.
(iii) Rewrite the negation using multiple quantifiers and variables.
a) Every Engineer loves to solve some problem.
b) There is a smallest positive integer.
c) All obtuse triangles have one angle that measures larger than 90°
d) There is a student in the class who helps all classmates.
the mid point of AB = (?,?) A=(-2,1) B=(1,-1)
Answer:
The midpoint of AB is (-0.5, 0)
Step-by-step explanation:
( X1 plus X2 = -1/2 = -0.5, Y1 plus Y2 = 0
an electrocardiogram is recorded on mm grid paper moving at a speed of 25mm per second. if the distance between the cycles as recorded is 15mm, what is the subject's heart rate in beats per minute?
The subject's heart rate is 100 beats per minute.
There are three main methods of calculating ECG rate. There is no specific best method, and preference varies between clinicians. However, certain methods may be better suited for rhythms such bradyarrhythmia's or tachyarrhythmias.
Rate = Number of R waves (rhythm strip) X 6The number of complexes (count R waves) on the rhythm strip gives the average rate over a ten-second period. This is multiplied by 6 (10 seconds x 6 = 1 minute) to give the average beats per minute (bpm)Useful for slow and/or irregular rhythmsTo calculate the heart rate from an ECG recorded on millimeter grid paper, you can use the following formula:
Heart rate (beats per minute) = (recording speed (mm/s) / distance between cycles (mm)) x 60 s/min
Using the given information, the calculation would be:
Heart rate (beats per minute) = (25 mm/s / 15 mm) x 60 s/min = 100 beats per minute
Therefore, the subject's heart rate is 100 beats per minute.
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in bridge, the 52 cards of s standard card deck are randomly dealt 13 apiece to players north, east, south, and west. (a) what is the probability that west has all 13 spades? (b) what is the probability that each player has one ace?
The probability that each player receives an ace is: 0.1055
let us consider they are 52 open spots in a row. We should divide the cards by placing them on these spots. This is the understanding that the cards on spots 1,2,…, and 13 are for a player, and the cards on spots 14,15,…, and 26 are for another player.
Then there are 134 ways to place the aces in such a way that each player will get an ace. This is the understanding that we do not discern suits. Next to that, there are 524 ways in total to place the aces.
So the probability that each player receives an ace is:
134(524)=28561270725=219720825≈0.1055
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10 in
12 in
10 in
3 in
Answer:
360
Step-by-step explanation:
The formula for volume is length times width times height
so our equations is 3*12*10=360
Please help me.
I am DESPERATE.
We can see here that the answer on angles is seen in the attached image.
What are angles?Angles are geometric shapes that are formed by two rays or lines that start from a common point, known as the vertex. Angles can be classified based on their measurement, or size, in degrees.
There are:
Acute Angle: An acute angle measures less than 90 degrees and is considered to be a sharp angle.Right Angle: A right angle measures exactly 90 degrees and is considered to be a square corner.Obtuse Angle: An obtuse angle measures more than 90 degrees and is considered to be a blunt angle.Straight Angle: A straight angle measures exactly 180 degrees and is considered to be a straight line.Reflex Angle: A reflex angle measures more than 180 degrees and is considered to be a curved angle.Complementary Angles: Two angles are considered complementary when their sum is equal to 90 degrees.Supplementary Angles: Two angles are considered supplementary when their sum is equal to 180 degrees.We see that in the attached image, we have been able to show that the given statements are true about angles.
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If Ashley bought 2 rotis and 3 pies for $10.00.
How much for one roti and how much for one pie?
One roti costs $20.00 and one pie costs $3.33.
How was the equation solved?Let x be the cost of one roti. Then, the cost of one pie is (10 - 2x) / 3.
Since the total cost is $10.00, we can set up an equation:
2x + (10 - 2x) / 3 = 10
Expanding the right-hand side:
2x + 3.33 - 2x = 10
0.33x = 6.67
Finally, dividing both sides by 0.33:
x = 20.00
So, one roti costs $20.00 and one pie costs (10 - 2 * 20) / 3 = $3.33.
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what is the 97% confidence interval for a sample of 104 soda cans that have a mean amount of 12.05 ounces and a population standard deviation of 0.08 ounces?
To calculate the 97% confidence interval, we can use the following formula:
CI = (mean - (critical value) * (standard deviation / square root of sample size), mean + (critical value) * (standard deviation / square root of sample size))
Where critical value is the t-value that corresponds to 97% confidence level and degrees of freedom (df) equal to n-1.
Using a t-distribution table with df = 103, the critical value is 1.98.
Putting in the numbers:
CI = (12.05 - (1.98) * (0.08 / sqrt(104)), 12.05 + (1.98) * (0.08 / sqrt(104)))
CI = (12.05 - (1.98) * (0.08 / 10.197), 12.05 + (1.98) * (0.08 / 10.197))
CI = (12.05 - 0.0177, 12.05 + 0.0177)
CI = (12.0323, 12.0677)
So the 97% confidence interval for the mean amount of soda in a can is (12.0323, 12.0677) ounces.
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The length of a rectangle is 3 times the width, w. Which expressions represent the perimeter of the rectangle?
Select all the correct expressions.
Responses
4w4 w
8w8 w
3w+w3 w plus w
6w+2w6 w plus 2 w
3(w+w)3 times open paren w plus w close paren
2(3w+w)2 times open paren 3 w plus w close paren
the correct expression for the Perimeter of the Rectangle will be 8w, 2w + 6w, and 2 (w + 3w).
What is Perimeter?The perimeter of a form is the space surrounding its edge. Find the perimeter of various forms by summing the lengths of their sides.
Given, The length of a rectangle is 3 times the width, w
Since,
width of the rectangle = w
Length of the rectangle = 3w
From the general formula of the Perimeter of the Rectangle:
Perimeter = 2(Length + width)
Perimeter = 2 (w + 3w)
Perimeter = 2w + 6w
Perimeter = 8w
Therefore, the correct expression for the Perimeter of the Rectangle will be 8w, 2w + 6w, and 2 (w + 3w).
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question the residual plots from five different least squares regression lines are shown below. which of the plots provides the strongest evidence that its regression line is an appropriate model for the data and is consistent with the assumptions required for inference for regression?
The plots provides the strongest evidence that its regression line is an appropriate model for the data and is consistent with the assumptions required for inference for regression is image 3.
ABOUT REGRESSIONRegression is one of the methods for determining cause-and-effect relationships between variables and other variables. In simple regression analysis, the relationship between variables is linear, where changes in variable X will be followed by changes in variables permanently. Whereas in a nonlinear relationship, changes in X are not followed by changes in variable Y proportionally.
The regression analysis method is used to produce a relationship between two or more variables in numerical form. The regression equation is the line equation that best represents the relationship between the two variables. Regression is divided into several types, namely simple regression, nonlinear regression, and multiple regression.
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simplify the ratio 27:63