Answers
Answer:
= 15/20 + 1 10/20 + 4 4/20
= 5 29/20
= 6 9/20
Exact Form:
[tex]\frac{3}{4}[/tex]
Decimal Form:
6.45
Mixed Number Form:
6[tex]\frac{9}{12}[/tex]
Related Questions
Please show me step by step how to do this
Answers
Answer:
48
Step-by-step explanation:
The nth term of an AP is expressed as;
Tn = a+(n-1)d
Id 12th term is 32, hence;
T12 = a+11d
32 = a+11d ...1
If the 5th term is 18, then;
T5 = a+4d
18 = a + 4d ....2
Subtract 1 from 2;
32 - 18 = 11d - 4d
14 = 7d
d = 14/7
d = 2
From 1; 32 = a+11d
32 = a+ 11(2)
32 = a + 22
a = 32-22
a = 10
Get the 20th term
T20 = a+19d
T20 = 10 + 19(2)
T20 = 10 + 38
T20 = 48
Hence the 20th term is 48
what divided by 3/7=7/15
Answers
Answer:
45/49
decimal form:
0.91836734
Step-by-step explanation:
Solve for Y(s), the Laplace transform of the solution y(t) to the initial value problem below. 3t y'' - 9y' + 18y = 6t e y(0) = 5, y'(0) = -6 "
Answers
Y(s) = 6/s * 1/(s * (s - 3)) + 1/s * 5 + 1/(s - 3) * 12
The solution to the initial value problem is :
y(t) = 12e³ᵗ + 3.
We have 3t y'' - 9y' + 18y = 6t e
Taking Laplace transform on both sides, we get
3L(ty'') - 9L(y') + 18L(y) = 6L(te)
Using Laplace transform formulas, we get:
3[s²Y(s) - sy(0) - y'(0)] - 9[sY(s) - y(0)] + 18Y(s) = 6/s²L(e)
⇒ 3s²Y(s) - 3s(5) + 6 - 9sY(s) + 45 + 18Y(s) = 6/s² * 1/sY(s)[3s² - 9s + 18] = 6/s² * 1/s - 3s + 12Y(s) = 6/s * 1/(s * (s - 3)) + 1/s * 5 + 1/(s - 3) * 12
Now, we need to find inverse Laplace transform of Y(s) to obtain the solution y(t).
Let's solve for the first term by Partial Fraction Expansion.
6/s * 1/(s * (s - 3))= A/s + B/(s - 3)6 = A(s - 3) + Bs
Therefore, A = -2 and B = 2y(t) = L⁻¹[Y(s)] = L⁻¹[6/s * 1/(s * (s - 3)) + 1/s * 5 + 1/(s - 3) * 12]= -2L⁻¹[1/s] + 2L⁻¹[1/(s - 3)] + 5L⁻¹[1/s] + 12L⁻¹[1/(s - 3)]= -2 + 2e³ᵗ + 5 + 12e³ᵗ= 12e³ᵗ + 3
Therefore, Y(s) = 6/s * 1/(s * (s - 3)) + 1/s * 5 + 1/(s - 3) * 12 and the solution to the initial value problem is y(t) = 12e³ᵗ + 3.
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A square pyramid has 1 square base and 4 triangular faces. Find its surface area. A. The area of the base is ________ square centimeters. B. The area of the four faces is ______ square centimeters. C. The surface area is ___________ square centimeters.
Answers
Answer:
See Explanation
Step-by-step explanation:
I will answer this question with the attached square pyramid
From the attached pyramid, we have:
[tex]Base\ Length = 20m[/tex]
So, the base area is:
[tex]Area = Length * Length[/tex]
[tex]A_1= 20m*20m[/tex]
[tex]A_1= 400m^2[/tex]
The dimension of each of the 4 triangles is:
[tex]Height = 16.4m[/tex]
[tex]Base = 20m[/tex]
So, the area of 4 triangles is:
[tex]Area = 4 * 0.5 * Base * Height[/tex]
[tex]A_2 = 4 * 0.5 * 20m * 16.4m[/tex]
[tex]A_2 = 656m^2[/tex]
So, the surface area is:
[tex]Area = A_1 + A_2[/tex]
[tex]Area = 400m^2 + 656m^2[/tex]
[tex]Area = 1056m^2[/tex]
3x ft
1.5x ft
x ft
180 ft
Answers
A rectangular garden has a width of 7x -2 and a length of 3x +10. Find the perimeter.
Answers
=20x+16
Answer:
20x + 16
Step-by-step explanation:
Width (w) = 7x - 2
Length (l) = 3x + 10
Perimeter = 2*(l + w)
= 2* (3x + 10 + 7x - 2)
= 2* (3x + 7x + 10 - 2 ) {Combine like terms}
= 2* ( 10x + 8) {Use distributive property: a(b +c) =(a*b) + (a*c)}
= 2*10x + 2*8
= 20x + 16
find the area of the surface. the part of the sphere x2 y2 z2 = 4z that lies inside the paraboloid z = x2 y2.
Answers
The area of the surface formed by the part of the sphere [tex]x^2 + y^2 + z^2 = 4z[/tex] that lies inside the paraboloid [tex]z = x^2 + y^2[/tex] is π/6 square units.
To find the area of the surface, we need to calculate the double integral over the region that lies inside both the sphere and the paraboloid.
The given sphere equation can be rewritten as [tex]x^2 + y^2 + (z - 2)^2 = 4[/tex]. This represents a sphere centered at (0, 0, 2) with a radius of 2.
The paraboloid equation [tex]z = x^2 + y^2[/tex] represents an upward-opening paraboloid centered at the origin.
To find the region of intersection, we set the sphere equation equal to the paraboloid equation:
[tex]x^2 + y^2 + (x^2 + y^2 - 2)^2 = 4[/tex]
Simplifying, we get [tex]x^4 + y^4 - 4x^2 - 4y^2 + 4 = 0[/tex].
This equation represents the boundary curve of the region of intersection.
By evaluating the double integral over this region, we find the area of the surface to be π/6 square units.
Therefore, the area of the surface formed by the given part of the sphere lying inside the paraboloid is π/6 square units.
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2. verify the Wronskian formulas 2 sin vít (a)],(x)]-v+1(x) + J_v(x)]v-1(x) = πχ (b)],(x)Y/(x) - L(x)Y, (x) 2 = πχ
Answers
The Wronskian formula is given by:$$W(y_1,y_2)=\begin {vmatrix} y_1 & y_2 \\ y_1' & y_2' \end{vmatrix}$$To prove the Wronskian formula of two functions, let $y_1$ and $y_2$ be two non-zero solutions of the differential equation $y'' + p(x)y' + q(x)y = 0$.
Then the Wronskian of these two functions is given by: $W(y_1,y_2)=\begin{vmatrix} y_1 & y_2 \\ y_1' & y_2' \end{vmatrix}=Ce^{-\int p(x)dx}$ where $C$ is a constant that depends on $y_1$ and $y_2$ but not on $x$.
Part (a) of the given Wronskian formulas is: $$W(2\sin v(x), J_v(x))=\begin{vmatrix} 2\sin v(x) & J_v(x) \\ 2v\cos v(x) & J_v'(x) \end{vmatrix}=2\sin v(x)J_v'(x)-2v\cos v(x)J_v(x)$$
Note that this formula is almost the same as the standard Wronskian formula, but with the constant $C$ replaced by $2\sin v(x)$.
We can verify that this is indeed a valid Wronskian by taking the derivative with respect to $x$:$$\frac{d}{dx}[2\sin v(x)J_v'(x)-2v\cos v(x)J_v(x)]=2\cos v(x)J_v'(x)-2\sin v(x)[vJ_v(x)+J_v'(x)]=0$$
The last step follows from the differential equation satisfied by the Bessel functions: $x^2y''+xy'+(x^2-v^2)y=0$
Part (b) of the given Wronskian formulas is: $$W(Y_\nu(x),Y_{\nu+1}(x))=\begin{vmatrix} Y_\nu(x) & Y_{\nu+1}(x) \\ Y_\nu'(x) & Y_{\nu+1}'(x) \end{vmatrix}=W_0Y_{\nu+1}(x)-W_1Y_\nu(x)$$where $W_0$ and $W_1$ are constants that depend on $\nu$ but not on $x$. This formula is also a valid Wronskian, since we can verify that its derivative with respect to $x$ is zero:
$$\frac{d}{dx}[W_0Y_{\nu+1}(x)-W_1Y_\nu(x)]=W_0Y_{\nu+1}'(x)-W_1Y_\nu'(x)=0$$
This follows from the recurrence relations satisfied by the Bessel functions:$Y_{\nu-1}'(x)-\frac{\nu}{x}Y_{\nu-1}(x)+\frac{\nu+1}{x}Y_{\nu+1}(x)=0$ $Y_{\nu+1}'(x)-\frac{\nu+1}{x}Y_{\nu+1}(x)+\frac{\nu+2}{x}Y_{\nu+2}(x)=0$
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Which of the following statements is an example of a null hypothesis? * 2 points The average GWA of resident students is higher than the average GWA of commuter students. The average GWA of resident students is not equal the average GWA of commuter students. There is no difference between the average GWA of resident students and the average GWA of commuter students, and if there is, it is due to chance. The average GWA of resident students is lower than the average GWA of commuter students. There is a difference between the average GWA of resident students and the average GWA of commuter students.
Answers
The following statement is an example of a null hypothesis: There is no difference between the average GWA of resident students and the average GWA of commuter students, and if there is, it is due to chance.
In statistics, a null hypothesis is a statement that assumes there is no difference between the two variables being tested. The null hypothesis is the statement that the researcher is attempting to disprove in favor of the alternative hypothesis. The null hypothesis can either be rejected or not rejected by the researcher after conducting statistical analysis.
In this case, the null hypothesis states "There is no difference between the average GWA (General Weighted Average) of resident students and the average GWA of commuter students, and if there is, it is due to chance." This means that the null hypothesis assumes that there is no significant distinction in the average GWA between resident students and commuter students. Any observed differences, if they exist, are attributed to random chance rather than a systematic difference between the two groups.
When conducting hypothesis testing, we compare the observed data to the null hypothesis to determine if there is enough evidence to reject the null hypothesis in favor of an alternative hypothesis.
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let u = 2,−3 , v = −5,1 , and w = −1 2 , 3 2 . compute the following:
u + v =
v + u =
5u =
2u + 3v =
2u + 4w =
u - v + 2w =
|v+ w| =
Answers
The computed values are:
u + v = (-3, -2)
v + u = (-3, -2)
5u = (10, -15)
2u + 3v = (-11, -3)
2u + 4w = (0, 2, 0)
u - v + 2w = (5, 0, 0)
|v + w| = 7.95
Vector addition is the operation of adding two vectors together to obtain a new vector. It is performed by adding the corresponding components of the vectors. For example, if we have two vectors u = [tex](u_1, u_2, u_3)[/tex] and v = [tex](v_1, v_2, v_3)[/tex], their sum u + v is given by [tex](u_1 + v_1, u_2 + v_2, u_3 + v_3)[/tex].
Scalar multiplication is the operation of multiplying a vector by a scalar (a real number). It is performed by multiplying each component of the vector by the scalar. For example, if we have a vector u = [tex](u_1, u_2, u_3)[/tex] and a scalar k, their product k * u is given by [tex](k * u_1, k * u_2, k * u_3[/tex]).
Both vector addition and scalar multiplication are fundamental operations in linear algebra and are used to manipulate and combine vectors in various applications.
To compute the given expressions, we perform vector addition and scalar multiplication as follows:
u + v =
[tex]= (2, -3) + (-5, 1) \\= (2 - 5, -3 + 1) \\= (-3, -2)[/tex]
v + u =
[tex]=(-5, 1) + (2, -3) \\= (-5 + 2, 1 - 3) \\= (-3, -2)[/tex]
5u =
[tex]= 5 * (2, -3) \\= (5 * 2, 5 * -3)\\ = (10, -15)[/tex]
2u + 3v =
[tex]=2 * (2, -3) + 3 * (-5, 1) \\= (4, -6) + (-15, 3)\\ = (4 - 15, -6 + 3) \\= (-11, -3)[/tex]
2u + 4w =
[tex]= 2 * (2, -3) + 4 * (-1, 2, 3/2) \\= (4, -6) + (-4, 8, 6)\\ = (4 - 4, -6 + 8, -6 + 6)\\ = (0, 2, 0)[/tex]
u - v + 2w =
[tex]= (2, -3) - (-5, 1) + 2 * (-1, 2, 3/2) \\= (2, -3) + (5, -1) + (-2, 4, 3) \\= (2 + 5 - 2, -3 - 1 + 4, 0 - 3 + 3) \\= (5, 0, 0)[/tex]
|v + w| =
[tex]= |(-5, 1) + (-1, 2, 3/2)| \\= |(-5 - 1, 1 + 2, 0 + 3/2)| \\= |(-6, 3, 3/2)| \\= \sqrt{((-6)^2 + 3^2 + (3/2)^2)} \\= \sqrt{(36 + 9 + 9/4)} \\= \sqrt{(63.25)} \\= 7.95[/tex]
Therefore, the computed values are:
u + v = (-3, -2)
v + u = (-3, -2)
5u = (10, -15)
2u + 3v = (-11, -3)
2u + 4w = (0, 2, 0)
u - v + 2w = (5, 0, 0)
|v + w| = 7.95
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ILL MARK BRAINLIESTTTTT
Answers
Answer:
$247.50
Step-by-step explanation:
clients with a quickbooks online plus subscription can create 400 ungrouped tags and 1000 grouped tags distributed among up to 40 tag answer
Answers
Clients with a QuickBooks Online Plus subscription have the ability to create a total of 400 ungrouped tags and 1000 grouped tags, which can be distributed among up to 40 tag categories.
QuickBooks Online Plus offers users the flexibility to categorize transactions using tags. Tags are a way to organize and track transactions based on specific criteria or categories. There are two types of tags available: ungrouped tags and grouped tags.
With a QuickBooks Online Plus subscription, clients can create a maximum of 400 ungrouped tags. These tags can be assigned to individual transactions to provide additional information or categorization. Clients can create up to 40 tag categories and distribute the 1000 grouped tags among these categories.
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Write the radian measure of each angle with the given degree measure explain your reasoning
Answers
Answer:
90 = π/2
45 = π/4
0 and 360 = 0 and 2π
135 = 3π/4
180 = π
225 = 5π/4
270 = 2π/3
315 = 7π/4
315 =
Step-by-step explanation:
please help me ...........
Answers
Answer:
a
Step-by-step explanation:
the 5y and the negative one cancel each other out. add the rest together you end up with 5x=-15. and divide each side by 5. you'll end up with x=-3
in regression model how do i know my data is accurate or related
to each other
Answers
In regression models, there are different methods that can be used to evaluate the accuracy of the model and the relationship between the variables. One of the most commonly used methods for evaluating the accuracy of the model is by calculating the R-squared value.
R-squared value represents the proportion of variation in the dependent variable that is explained by the independent variable(s). It ranges from 0 to 1, with a higher value indicating a better fit. To evaluate the accuracy of the model is to use residual plots. Residual plots can be used to identify patterns or trends in the errors or residuals, which can help to identify potential problems with the model and suggest ways to improve it. Additionally, the residuals can be tested for normality and homoscedasticity. Normality can be checked using a normal probability plot, and homoscedasticity can be checked using a scatter plot of residuals versus fitted values.
If the residuals are normally distributed and have a constant variance, then the assumptions of the regression model are met. Another way to evaluate the relationship between the variables is to use correlation analysis. Correlation analysis is a statistical technique that measures the strength and direction of the linear relationship between two variables. The correlation coefficient can range from -1 to +1, with a value of 0 indicating no correlation and a value of -1 or +1 indicating a perfect negative or positive correlation, respectively.
However, correlation analysis only measures the strength and direction of the linear relationship and does not take into account other factors that may affect the relationship, such as outliers or nonlinearities.
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Solve: x - (-6) = -2
Answers
Answer: = -8
Step-by-step explanation: Your welcome!
Solve for x and y
7x - 3y = 4 and -10x + 3y = 2
A. x = -2, y = -6
B. x = 6, y = -2
C. x = 2, y = -6
D. x = 6, y = 2
Answers
7x - 3y = 4
-10x + 3y = 2
Add both equations
-3x = 6, x = -2
Plug in -2 for x in one equation
7(-2) - 3y = 4
-14 - 3y = 4
-3y = 18, y = -6
Solution: x = -2, y = -6
5. Bryce gets a monthly allowance of $10 plus $1 for each
additional chore.
A) Determine if the situation is linear or not.
B) Determine if the situation is proportional or not.
C) Determine if the situation is a function or not.
How can you tell? Be sure to use the words input, output, slope and y-intercept in your
explanation.
Answers
can someone help me AND explain how they got the answer?
Answers
Answer:
g=4
Step-by-step explanation:
this is a 30 60 90 triangle. the hypotenuse is 2x while the shortest side is x. if 8=2x then x must be 4.
A rectangular window is 3.5 feet wide and has an area of 19.25 square ft you have six yards of string light do you have enough string lights to outline the window with light
Answers
Answer:
yes
Step-by-step explanation:
We are to determine if 6 yards is enough t to go round the perimeter of the window
The length is not given, so we have to determine the length from the area
Area of a rectangle = length x breadth
19.25 = 3.5 x length
length = 5.5 feet
Perimeter = 2 x ( length + breadth )
2 x (5.5 + 3.5) = 18 feet
We need to convert the string to foot
1 yard = 3 foot
6 x 3 = 18 foot
the string and the perimeter are equal, so it is enough
Find the distance from (-6, 1) to (-3, 5).
Answers
Answer:
9.8 units
Step-by-step explanation:
distance = sqrt (x2 - x1)^2 + ( y2 - y1)^2
sqrt (-3 - (-6))^2 + (5 - 1)^2
sqrt (9)^2 + (4)^2
sqrt 81 + 16
sqrt 97
9.848857802
Find the least squares straight line y = mx + b to fit the data points: (0,3), (2, 1), (3, 1). Compute the minimum square error.
Answers
The least square straight line y = -2x + 3 to fit the data points (0, 3), (2, 1), (3, 1) is found. The minimum square error is 61.
Given data points are (0, 3), (2, 1), (3, 1).
To find the least square straight line, y = mx + b.
The line that fits these points will have the minimum square error.(0,3) y = mx + b; 3 = 0 + b; b = 3(2,1)
y = mx + b; 1 = 2m + b; b = 1 - 2m(3,1)
y = mx + b; 1 = 3m + b; b = 1 - 3m
Substitute the value of b in (2) and (3)1 - 2m = 3 - 3m; m = -2y = mx + b;
y = -2x + 3
The least square straight line y = -2x + 3 to fit the data points (0, 3), (2, 1), (3, 1) is found.
Now, we need to compute the minimum square error.
Square error of each point: Point 1 (0, 3): Square error = (3 - 3)² = 0
Point 2 (2, 1): Square error = (1 - (-4))² = 25
Point 3 (3, 1): Square error = (1 - (-5))² = 36
The minimum square error is the sum of the square error of all the points, Minimum square error = 0 + 25 + 36 = 61
Therefore, the least square straight line y = -2x + 3 to fit the data points (0, 3), (2, 1), (3, 1) is found. The minimum square error is 61.
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Which digit in 12,345 has the same place value as 6 in 67.89
Answers
Answer:
4
Step-by-step explanation:
Line up the numbers at the decimal point and then find the number the same number of spaces away from the decimal point.
12,345.00
00067.89
PLSSSSSSSS SOMEONE HELPPPP
Answers
Answer:
(-2, -4)
Step-by-step explanation:
use the laplace transform to solve the given initial-value problem. y' 5y = f(t), y(0) = 0, where f(t) = t, 0 ≤ t < 1 0, t ≥ 1
Answers
The solution to the initial-value problem using the Laplace transform is y(t) = (1/25)(1 - [tex]e^{(-5t)[/tex]) - (1/25)t + (1/125)[tex]e^{(-5t)[/tex].
To solve the given initial-value problem using Laplace transform, we will first take the Laplace transform of the given differential equation and apply the initial condition.
Take the Laplace transform of the differential equation:
Applying the Laplace transform to the equation y' + 5y = f(t), we get:
sY(s) - y(0) + 5Y(s) = F(s),
where Y(s) represents the Laplace transform of y(t) and F(s) represents the Laplace transform of f(t).
Apply the initial condition:
Using the initial condition y(0) = 0, we substitute the value into the transformed equation:
sY(s) - 0 + 5Y(s) = F(s).
Substitute the given function f(t):
The given function f(t) is defined as:
f(t) = t, 0 ≤ t < 1
f(t) = 0, t ≥ 1
Taking the Laplace transform of f(t), we have:
F(s) = L{t} = 1/s²,
Solve for Y(s):
Substituting F(s) and solving for Y(s) in the transformed equation:
sY(s) + 5Y(s) = 1/s²,
(Y(s)(s + 5) = 1/s²,
Y(s) = 1/(s²(s + 5)).
Inverse Laplace transform:
To find y(t), we need to take the inverse Laplace transform of Y(s). Using partial fraction decomposition, we can write Y(s) as:
Y(s) = A/s + B/s² + C/(s + 5),
Multiplying both sides by s(s + 5), we have:
1 = A(s + 5) + Bs + Cs².
Expanding and comparing coefficients, we get:
A = 1/25, B = -1/25, C = 1/125.
Therefore, the inverse Laplace transform of Y(s) is:
y(t) = (1/25)(1 - [tex]e^{(-5t)[/tex]) - (1/25)t + (1/125)[tex]e^{(-5t)[/tex].
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Thermometer A shows the temperature in the morning. Thermometer B shows the temperature in the evening. What is the difference in the temperatures?
Answers
Answer:
(Thermometer B reading - Thermometer A reading)
Step-by-step explanation:
The thermometer reading aren't given in the question.
However, hypothetically.
The difference between two temperature values (morning and evening values) would be :
Temperature in the evening - morning temperature
Therefore,
If ;
Thermometer A reading = morning temperature
Thermometer B reading = evening temperature
Difference in the temperature :
(Thermometer B reading - Thermometer A reading)
if x=10, write an expression in terms of x for the number 5,364
Answers
Answer:
(5,354 + x)
or
536.4*x
Step-by-step explanation:
We know that x = 10.
Now we want to write an expression (in terms of x) for the number 5,364.
This could be really trivial, remember that x = 10.
Then: (x - 10) = 0
And if we add zero to a number, the result is the same number, then if we add this to 5,364 the number does not change.
5,364 = 5,364 + (x - 10) = 5,364 + x - 10
5,364 = 5,354 + x
So (5,354 + x) is a expression for the number 5,364 in terms of x.
Of course, this is a really simple example, we could do a more complex case if we know that:
x/10 = 1
And the product between any real number and 1 is the same number.
Then:
(5,364)*(x/10) = 5,364
(5,364/10)*x = 5,364
536.4*x = 5,364
So we just found another expression for the number 5,364 in terms of x.
Gabe can travel 40 miles on his motorbike in the same time it takes Dena to travel 15 miles on her bicycle. If Dena rides her bicycle 20 mph slower than Gabe rides his motorbike, find
Dena's rate.
Answers
Answer:
answer is 12 miles vause he can travel faster
Step-by-step explanation:
A zoo keeper measured the length of two baby alligators. The first one was 12 inches. The other was 5/6 of that length. How long was the second baby alligator?
Answers
Answer:
10 inches
Step-by-step explanation:
5/6*12
5*2 (since 12/6=2)
10 inches long!
hope it helps you!
Answer:
It would be 10 inches
Step-by-step explanation:
The 5/6 of 12 is 10 since(or you can simply say that we just subtract 2, I don't really know how to explain my work)
If the conclusion of an argument is a tautology, then the counterexample set of that argument must be inconsistent. True or False?
Answers
The statement "If the conclusion of an argument is a tautology, then the counterexample set of that argument must be inconsistent" is true.
Let's understand why?
Explanation:
An argument with a tautology conclusion is an argument that arrives at a conclusion that is always true, regardless of the truth values of the premises. In other words, it is impossible for the premises to be true while the conclusion is false.
This means that any attempt to find a counterexample that disproves the conclusion will always fail, as there is no possible scenario in which the conclusion is false.
The counterexample set of an argument is the set of all possible scenarios in which the premises are true but the conclusion is false. If the conclusion is a tautology, then there is no possible scenario in which the conclusion is false, and thus the counterexample set is empty. An empty counterexample set is equivalent to an inconsistent counterexample set, as it means that there is no consistent scenario in which the conclusion is false.
Therefore, if the conclusion of an argument is a tautology, then the counterexample set of that argument must be inconsistent.
Hence, the statement is true.
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