With the use of regression analysis, you may determine which of the independent factors actually has an effect statistically and learn how the dependent variable changes when one of the independent variables changes.
What is linear regression?Regression analysis is used in statistical modeling to determine the associations between two or more variables:
The fundamental element you are attempting to comprehend and anticipate is the dependent variable. The elements that could have an impact on the dependent variable are known as independent variables.
Regression analysis enables you to statistically ascertain which of the independent variables actually has an impact and explains how the dependent variable changes when one of the independent variables changes. There is a difference between a simple and multiple linear regression in statistics. A dependent variable and one independent variable are modeled using a linear function in simple linear regression. Multiple linear regression is used when there are two or more explanatory variables used to predict the dependent variable.
Here,
estimate a simple regression in excel:
On the Data tab, in the Analysis group, click the Data Analysis button.
Select Regression and click OK.
In the Regression dialog box, configure the following settings: Select the Input Y Range, which is your dependent variable.
Click OK and observe the regression analysis output created by Excel.
Regression analysis illustrates how the dependent variable changes when one of the independent factors changes and allows you to statistically determine which of the independent variables actually has an impact.
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A movie theater has a seating capacity of 317. The theater charges $5.00 for children, $7.00 for students, and $12.00 for adults. There are half as many adults as there are children. If the total ticket sales was $ 2298, and the theater was filled to capacity, how many children, students, and adults attended?
The total ticket sales was $ 2298, and the theater was filled to capacity
Children: 158
Students: 158
Adults: 79
What exactly is a math area?The amount of space occupied by a flat (2-D) surface or an object's shape is known as its area. Draw a square on a piece of paper using a pencil. A 2-D figure, that is. The term "Area" refers to the area that a shape occupies on paper. Now picture that your square is composed of smaller unit squares.
Where is the usage of area?According to Study.com, area is a mathematical concept that is defined as the two-dimensional space occupied by an item. Area is used in many real-world contexts, including building, farming, architecture, science, and even determining how much carpet you'll need to cover your home's rooms.
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One of the same side interrier angles of two paralell lines is 20 degrees less than the other sameside interior angle. Find the measures of the two angles.
Interior angles on the same side are supplementary, which means they add up to 180°. We can write the equation as follows and refer to the two angles as x° and (x + 20)°.
What are angles?When two rays are linked at their ends, they create an angle in geometry. The sides or arms of the angle are what are known as these rays.
When two lines meet at a point, an angle is created.
An "angle" is the measurement of the "opening" between these two rays. It is symbolized by the character. The circularity or rotation of an angle is often measured in degrees and radians.
Angles are a common occurrence in daily life.
Angles are used by engineers and architects to create highways, structures, and sports venues.
According to our question-
x + x + 20 = 180
2x + 20 = 180
2x = 160
If x = 80, the angles are 80° and 80 + 20 = 100°, respectively.
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pls help me with math i’ll give you brainlist :)))
The required number of candles Marcella has in the starting is 56.
What are equation models?The equation model is defined as the model of the given situation in the form of an equation using variables and constants.
Here,
As mentioned in the question,
She has some candles in the starting before she starts collecting the candles, let x be the candle she had in the starting,
Now,
According to the question she is buying 13 candles every week, at the end of 8 weeks she has 160 candles,
So.
x + 13(8) = 160
x + 104 = 160
x = 160 - 104
x = 56
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Please answer correctly It's pre-calculus
Initial size of bacteria is 313, population of bacteria after 5 hours is 3.346 ×10¹¹.
What is bacterial growth?here growth means increases in the number of bacterial populations with respect to time. Generally, the rate of growth of bacteria is occurred exponentially. We use the following exponential equation to calculate the number of bacteria.
N= N° e∧(kt)
How to calculate the initial sizes of bacteria and the population after certain time period?In the above equation, N and N° denotes the number of populations after t minutes and initial time respectively.
k is a constant of proportion
t is the time in minutes
as per given data, the number is doubled after 10 min
N=2N°, t=10
2N°=N° e∧(k10)
2= e∧(k10)
㏑2 = k10 [we took ㏑ in both side]
k= 0.0693
after t= 80 min, the population N= 80000
now using the equation, 80000=N° e∧(k80)
as k=0.0693, N°= 313
the initial number is 313'
after t=5 hours =300 min, the population will be
N= 313 e∧ (0.0693x300)
N = 3.346×10¹¹
hence, initial population is 313 and the number increase to 3.346×10¹¹ after 5 hours.
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Match the amplitude, midline, period, and frequency for the cosine equation.
Amplitude is 5, midline is 3, period is π and the frequency is 2
We can describe the cosine function as y = Acos(B(x + C )+ D
where,
amplitude is A
Frequency is B
period is 2π/B
phase shift is C (positive is to the left)
vertical shift is D
Step 1:
Identify
5 cos(2x) + 3 → Acos(B(x + C )+ D
Hence
A = 5 = Amplitude
B = 2.C = 0. So,
Period = 2π / B
= 2π / 2 = π
Period = π
Frequency = B = 2
Vertical shift = D = 3
Step 2:
Midline
The equation of the midline of periodic function is the average of the maximum and minimum values of the function.
a) we have a maximum when
cos(2x) = 1
x =0, because (cos 0) = 1 Now, replace
y = 5 cos(2x) + 3
y = 5cos(2. 0 ) +3
= 5.1 + 3
= 8
So, the maximum is 8
b) we have a minimum when
cos(2x) = -1
x = π/2 , because
cos(2.π/2) = cos(π) = -1
Now, replace
y = 5cos(2.π/2) + 3
= 5. (-1) + 3
= -5+3
= -2
So, the midline is the average of 8 and -2
Midline = y = [8 + (-2)] / 2
= 6/2
y = 3
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Arturo compro una calculadora, para venderla recargó el precio que le costo en 30%. Al momento de venderla a su amiga Carmen, le hizo una rebaja de 30% pensando que con esta rebaja iba a vender el precio que habia comprado, pero sin embargo quedó peerjudicado en s/ 54.¿ A qué precio se vendio?
Answer:
5.46
Step-by-step explanation:
precio original = x
0.7(1.3x) = x - 0.54
0.91x - x = -0.54
x = 6
6 + 30% de 6 = 7.8
7.8 - 30% de 7.8 = 5.46
Arturo compró por 6.
Aumentó 30% para 7.80.
Bajó 30% para 5.46.
6 - 5.46 = 0.54
pls help i will give brainliest
The table represents a quadratic function C(t).
t C(t)
2 4
3 1
4 0
5 1
6 4
What is the equation of C(t)?
C(t) = −(x − 4)2
C(t) = (x − 4)2
C(t) = −x2 + 4
C(t) = x2 + 4
The quadratic equation of the function C(t) is; C(t)= (x - 4)²
How to find the quadratic function?
We are given the coordinates as;
When t = 2, C(t) = 4
When t = 3, C(t) = 1
When t = 4, C(t) = 0
When t = 5, C(t) = 1
When t = 6, C(t) = 4
The general formula formula for quadratic equation is;
y = ax² + bx + c
where c is y-intercept
We are given that x = 4, when y = 0. Thus, x = 4 is a root of the equation.
Put x = 2and y = 4 into the equation to get;
4a + 2b + c = 4 -----(1)
Put x = 3 and y = 1 into the equation to get;
9a + 3b + c = 1 -----(2)
Put x = 4 and y = 0 into the equation to get;
16a + 4b + c = 0 -----(3)
Using simultaneous equation solver gives;
a = 1, b = -8 and c = 16. Thus, our equation is;
y = x² - 8x + 16
By factorization;
y = x² - 4x - 4x + 16
y = x(x - 4) - 4(x - 4)
y = (x - 4)²
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How far can an object be pushed if 22 J is used with 17.5 N of force? *
A 1.25 meters,
B 0.80 meters
C 4.5 meters
D 385 meters
Answer:
[tex]\huge\boxed{\sf d = 1.25\ m}[/tex]
Step-by-step explanation:
Given Data:Work = W = 22 J
Force = F = 17.5 N
Required:Distance = d = ?
Formula:W = Fd
Solution:Put the given data in the above formula.
22 = 17.5 (d)
Divide 17.5 to both sides
22/17.5 = d
1.25 m = d
d = 1.25 m[tex]\rule[225]{225}{2}[/tex]
Consider the following argument:
Observation: Here in Nashville, the sun has risen every morning.
Conclusion: The sun is going to rise in Nashville tomorrow.
The argument is strong because there are a large number of observations
In the given argument and condition, (D) there are several observations, which strengthen the argument.
What is an argument?An argument is a statement or set of claims, known as premises, that seeks to evaluate the plausibility or acceptability of a conclusion.
The logical, dialectical, and rhetorical perspectives are the three basic areas of study for arguments.
Giving an argument entails offering a group of premises as justifications for believing the conclusion.
It's not always necessary to criticize or insult someone when making an argument.
Arguments can also be employed to back up the beliefs of others.
An example of an argument is as follows:
You should put in a lot of effort if you want to find a decent career.
So, in the given argument and condition, (D) there are several observations, which strengthen the argument.
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Complete question:
Consider the following argument:
Observation: Here in Nashville, the sun has risen every morning. Conclusion: The sun is going to rise in Nashville tomorrow.
a. The argument is weak because there is only one specific case.
b. The argument is strong because the premise includes scientific evidence.
c. The argument is weak because the observation does not consider other cities.
d. The argument is strong because there are a large number of observations.
Each year caronline deposited a certain amount of money in an account which pays an annual interest rate of r so that at the end of each year, the balance in the account is multiplied by a growth factor of x=1+r. $600 is deposited at the start of the first year, and $200 at the start of the following year. Write an expression for a value of the account at the end of three years in terms of growth factors x. Find the value at the end of 3 years if the interest rate is 4%.
Question content area left
Part 1
On a math test Ali needs to describe the motions which map ΔEFG to ΔMNO. The coordinates of ΔEFG are E(6,5), F(9,5), and G(6,10). The coordinates of ΔMNO are M(0,0), N(−3,0), and O(0,5). He says there is a translation 6 units to the left and 5 units down, followed by a reflection across the x-axis. Describe the sequence of rigid motions. What is Ali's likely error?
-10
-5
5
10
-10
-5
5
10
x
y
E
F
G
M
N
O
x y graph
.
.
.
Question content area right
Part 1
Which of the following is the description of the rigid motions which maps ΔEFG to ΔMNO?
A.
A translation 6 units to the left and 5 units down, followed by a reflection across the x-axis
B.
A translation 6 units to the left and 5 units down, followed by a reflection across the y-axis
C.
A translation 5 units to the left and 4 units down, followed by a reflection across the y-axis
Part 2
What is Ali's likely error?
A.
He reflected the triangle across the wrong axis.
B.
He did not move the correct units down.
C.
He did not move the correct units to the left.
There is a translation 6 units to the left and 5 units down, followed by a reflection across the x-axis is the description of the rigid motions which maps ΔEFG to ΔMNO and he reflected the triangle across the wrong axis is the Alis error.
What is Graph?Graph is a mathematical representation of a network and it describes the relationship between lines and points.
Given,
The coordinates of ΔEFG are E(6,5), F(9,5), and G(6,10).
The coordinates of ΔMNO are M(0,0), N(−3,0), and O(0,5)
A translation is a movement of the graph either horizontally parallel to the -axis or vertically parallel to the -axis
Reflections of graphs involve reflecting a graph over a specific line. Reflecting functions are functions whose graphs are reflections of each other.
There is a translation 6 units to the left and 5 units down, followed by a reflection across the x-axis is the description of the rigid motions which maps ΔEFG to ΔMNO and he reflected the triangle across the wrong axis is the Alis error.
Hence, there is a translation 6 units to the left and 5 units down, followed by a reflection across the x-axis is the description of the rigid motions which maps ΔEFG to ΔMNO and he reflected the triangle across the wrong axis is the Alis error.
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ents
Select all of the triangles that are congruent to triangle A by the SSS postulate.
A
B
HHH
A A
G
O Triangle H
O Triangle D
O Triangle I
O Triangle C
O Triangle F
O Triangle B
O Triangle E
O Triangle G
À l
H
HE
Answer:
Triangle B
Step-by-step explanation:
The triangles have three pairs of congruent sides.
Let's compare
5/8 and 7/10
Answer:
5/8=25/40 7/10=28/40
Step-by-step explanation:
5/8<7/10
Mr. Hansen has three sticks that measure 5 inches, 10 inches and 17 inches. If he connects the sticks ends, will the three sticks form a triangle?
The three sticks will not form a triangle.
What is the triangle inequality theorem?
The triangle inequality theorem explains the connection between a triangle's three sides. This theorem states that for any triangle, the sum of the lengths of the first two sides is always greater than the length of the third side. In other terms, this theorem states that a straight line is always the shortest distance between any two places.
Given, Mr Hansen has three sticks that measure 5 inches, 10 inches and 17 inches
From the above definition of the Triangle inequality theorem,
Sum of two sides = 5 + 10 = 15 which is less than
the length of the third side = 17
So, the three sticks will not form a triangle.
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Given ∠3≅∠4
Which of the following statements cannot be proved
∠1≅∠2
∠F≅∠2
∠1+∠4≅∠2+∠3
∠1+∠2≅∠3+∠4
Answer:
∠1+∠2≅∠3+∠4 cant be proven because sum of two obtuse angles is sure to be greater than sum of two acute angles of a triangle.
what is 50% of 950? Hint: We can think of 50% as a common fraction.
Answer:
Step-by-step explanation:
To find 50% of 950, you can multiply 950 by 0.50. 50% is the same as 0.50.
The calculation is: 50% * 950 = 0.50 * 950 = <<50*.01*950=475>>475
So, 50% of 950 is 475.
Find the missing length.
c=√?
Pythagorean Theorem: a²+b²=c²
After using the Pythagorean theorem the missing length of c is √148
What is the Pythagorean theorem in plain English?
In a right-angled triangle, the square of the hypotenuse side is equal to the sum of the squares of the other two sides, according to Pythagoras's Theorem. These triangle's three sides are known as the Perpendicular, Base, and Hypotenuse.
How may the Pythagorean Theorem be demonstrated the simplest way?
Angles CAB, AC'B, and AB'C must be equal in order for AC2 + AB2 to equal BC(CB' + BC'). Triangles ABC, AC'B, and AB'C are indeed comparable. Since AB/BC' = BC/AB and AC/CB' = BC/AC, we have the necessary identity right away. Theorem reduces to Pythagorean proposition and proof if angle A is correct.
Pythagorean Theorem: a²+b²=c²
so (12)^2+(2)^2 = 144+4 = 148
c²=148
c=√148
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Find sin D, sin E, cos D, and cos E. Write each answer as a fraction in simplest form.
Answer:
7 5 15 22
step,by step explanation: yes
g(t)=3t+4 Find g(-3)
Simplify the following equation:
17/6 = -1 2/3 + x
Answer: x=27/6
Step-by-step explanation:
-1 2/3 = -5/3
17/6 = -5/3 + x
x = 17/6 + 5/3
x = 17/6 + 10/6
x = 27/6
The points (d, 7) and (0, 10) fall on a line with a slope of 1/3. What is the value of d?
The value of missing coordinate d of the point (d, 7) in the line such that its slope is 1 / 3 is - 9.
What are the missing coordinates that satisfies a given slope?
In this problem we must determine the value of the missing coordinates of a point in a line such that its slope is 1 / 3. The slope of the line can be determined by means of the secant line formula:
m = Δy / Δx
Where:
Δx - Change in the x-coordinates.Δy - Change in the y-coordinates.If we know that (x₁, y₁) = (d, 7), (x₂, y₂) = (0, 10) and m = 1 / 3, then the missing coordinate is:
1 / 3 = (10 - 7) / (0 - d)
1 / 3 = - 3 / d
d = - 9
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I Need help on this problem! please!
The pairs of triangles that are congruent are;
A. Δ1 and Δ5
B. Δ1 and Δ2
C. Δ2 and Δ3
D. Δ3 and Δ5
E. Δ1 and Δ3
F. Δ3 and Δ4
G. Δ1 and Δ4
H. Δ4 and Δ5
What are congruent triangles?Congruent triangles are triangles that have all three sides and all three angles on each triangle having the same length and the same measure.
The congruent angles are indicated by the number of markings
The angles in the figures are;
Angle with one arc
Angles with two arcs marks
Angles with three arc marks
The congruent sides are indicated by one dash, and two dashes
Therefore;
Δ2 s congruent to Δ1 is congruent to Δ3 by Angle-Side-Angle rule of congruency
Similarly, we have;
Δ3 is congruent to Δ4 by Angle-Side-Angle congruency postulate
Therefore;
Triangle Δ2 is congruent to Δ3 by Angle-Side-Angle congruency postulate
From the diagram, the one arc, two arcs, and three arc angles form a linear pair, therefore;
Therefore, Δ4 is congruent to Δ5
Δ1 is congruent to Δ4
Δ2 is congruent to Δ5, therefore; Δ3 is congruent to Δ5
Similarly;
Δ1 is congruent to Δ3
Δ1 is congruent to Δ2, therefore , therefore, Δ1 is congruent to Δ5
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What is m/1?
68°
49°
Of the 400 students in the 8th grade, four-fifths have purchased tickets for the end of year trip. If there needs to be two chaperones for every 75 students, how many chaperones are needed?
The number of chaperones that are needed is 128/15.
What is unitary method?
The unitary approach is a strategy for problem-solving that involves first determining the value of a single unit, then multiplying that value to determine the required value.
Given that the number of students in 8th grade is 400.
Four fifth of total number of students go for trip.
The number of student who goes for the trip is 400 × 4/5
= 320.
To carry 75 students, we need 2 chaperones.
Apply unitary method:
To carry 1 student, we need 2/75 chaperones.
To carry 320 students, we need (2 ×320)/75 chaperones.
= (2 × 64)/15
= 128/15
= 8.533
= 9
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IfGH=72- 1andBC=4z- 3,whatisGH?
The length of the line segment GH is 34 units
How to determine the length GH?The complete question is added at the end of this solution
From the question, we have the following parameters that can be used in our computation:
GH= 7z - 1
BC = 4z - 3
Also from the question, we understand that the line segment BC is half the line segment GH
This can be represented mathematically as follows
BC = 1/2 * GH
Substitute the known values in the above equation, so, we have the following representation
4z - 3 = 1/2(7z - 1)
Multiply through by 2
8z - 6 = 7z - 1
Collect the like terms
8z - 7z = 6 - 1
Evaluate the like terms
z = 5
Recall that
GH= 7z - 1
Substitute the known values in the above equation, so, we have the following representation
GH= 7 * 5 - 1
Evaluate
GH= 34
Hence, the length is 34 units
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Complete question
The line segment BC is half the line segment GH
If GH = 7z- 1 and BC=4z- 3,
What is GH?
PLEASE HELP ME ASAP!!!! PLEASE I WILL GIVE YOU BRAINLIST!!!
LM is translated 5 units right and 2 units up to LM' as the graph shows the move in positive direction.
What is graph?In elementary mathematics, the term "graph" designates a plot or a function graph. A graph is, in the language of mathematicians, a set of points and the connections between some subset of those points (which may be empty). In mathematics, a graph is a visual representation or diagram that shows facts or values in an ordered way. The relationships between two or more items are frequently represented by the points on a graph.
Here,
As the graph indicates a move in the right direction, LM is translated 5 units right and 2 units up to LM'.
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Drag each object to show whether cost is proportional to area in the situation represented.
Increasing the area from 400 to 600 (50%) results in an increase in cost from 500 to 750 (50% increase), which shows that the cost is not proportional to the area.
In a situation where cost is proportional to area, the relationship between cost and area is said to be directly proportional. Direct proportionality means that if the value of one variable (in this case, area) is multiplied by a certain factor, then the other variable (in this case, cost) will also be multiplied by the same factor. The mathematical formula for direct proportionality is [tex]y = kx,[/tex] where y and x are the two variables, and k is the constant of proportionality. If the relationship between the variables is not proportional, then it is a non-proportional relationship.
The objects are proportional if increasing one quantity by a certain factor results in the other quantity increasing by the same factor. In this case, cost is proportional to area if doubling the area would double the cost. Based on the table, we can see that the cost is not proportional to the area since the cost does not increase by the same factor as the area. For example, increasing the area from 400 to 800 (double) results in an increase in cost from 500 to 1000 (also double). However, increasing the area from 400 to 600 (50%) results in an increase in cost from 500 to 750 (50% increase), which shows that the cost is not proportional to the area.
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WRITE THE EQUATION OF THE CONIC SHOWN
Answer:
x² +y² -10x -8y +21 = 0
Step-by-step explanation:
try desmos graph
URGENT!! ILL GIVE BRAINLIEST!!!! AND 100 POINTS!!!
What value of x would make these two solids similar?
A. X=27
B. X=31
C. X=30
D. X=7.75
Value of x would make these two solids similar when x is equal to 7.75.
Define similarity.When it comes to Euclidean geometry, two things are said to be similar if they have the same shape or the same shape as each other's mirror image. One can be created from the other more precisely by evenly scaling, possibly with the inclusion of further translation, rotation, and reflection. If two figures have the same shape, they are said to be comparable. In more formal terms, two figures are said to be comparable if their respective angles are congruent and their corresponding side length ratios are identical. The scale factor is the name given to this usual ratio.
Given
Two figures given
Value of x would make these two solids similar
D. X=7.75
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Lori gets an offer from another bank that is also paying 6% on CD’s, but is compounding interest daily. How much will the $1500 CD be worth in:
a) 5 years?
b) 10 years?
c) 18 months?
[tex]A=P(1+\frac{r}{n})^{nt}[/tex]
P = $1,500
r = 0.06
n = 365 times per year
t = varies
so: [tex]A(t)=\$1500(1+\frac{0.06}{365})^{365t}=\$1500(1.00016438)^{365t}[/tex]
a) A(5) = [tex]\$1500(1.00016438)^{365*5} = \$2,024.73[/tex]
b) A(10) = [tex]\$1500(1.00016438)^{365*10} = \$2,733.01[/tex]
c) 18 months = 1.5 years, so:
A(1.5) = [tex]\$1500(1.00016438)^{365*1.5} = \$1,641.25[/tex]