One catalog offers a jogging suit in two colors, gray and black. It comes in sizes S, M, L, XL and XXL. How many possible jogging suits can be ordered? PLEASE HELP NO LINKS!!!
Answer:
5..
Step-by-step explanation:
Solve the initial value problem below using the method of Laplace transforms.
y'' + 2y' - 3y = 0, y(0) = 2, y' (0) = 18
To solve the initial value problem using the method of Laplace transforms, we'll first take the Laplace transform of both sides of the differential equation.
Taking the Laplace transform of each term, we get:
Ly'' + 2Ly' - 3Ly = 0
Using the properties of Laplace transforms and the initial value theorem, we can write the transformed equation as:
[tex]s^2Y(s) - sy(0) - y'(0) + 2sY(s) - 2y(0) - 3Y(s) = 0[/tex]
Substituting the initial conditions y(0) = 2 and y'(0) = 18, we have:
[tex]s^2Y(s) - 2s - 18 + 2sY(s) - 4 - 3Y(s) = 0[/tex]
Grouping similar terms, we obtain:
[tex](s^2 + 2s - 3)[/tex]Y(s) = 24 + 2s
Now, we can solve for Y(s) by dividing both sides by ([tex]s^2 + 2s - 3)[/tex]
Y(s) = (24 + 2s) /[tex](s^2 + 2s - 3)[/tex]
To find the inverse Laplace transform and obtain the solution y(t), we need to factor the denominator of the expression on the right-hand side:
s^2 + 2s - 3 = (s + 3)(s - 1)
We can rewrite the expression for Y(s) as:
Y(s) = (24 + 2s) / [(s + 3)(s - 1)]
Now, we need to perform partial fraction decomposition to simplify the expression. We write:
Y(s) = A / (s + 3) + B / (s - 1)
Multiplying both sides by (s + 3)(s - 1) to clear the denominators, we get:
24 + 2s = A(s - 1) + B(s + 3)
Expanding and collecting like terms, we have:
24 + 2s = (A + B)s + (3B - A)
To match the coefficients on both sides of the equation, we equate the coefficients of s and the constants:
A + B = 2 (coefficient of s)
3B - A = 24 (constant term)
Solving this system of equations, we find A = 5 and B = -3.
Now, we can rewrite Y(s) as:
Y(s) = 5 / (s + 3) - 3 / (s - 1)
Taking the inverse Laplace transform of Y(s), we can use the table of Laplace transforms or known formulas to find the solution y(t):
y(t) = 5e^(-3t) - 3e^t
Therefore, the solution to the initial value problem is:
[tex]y(t) = 5e^(-3t) - 3e^t[/tex]
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How many solutions does this equation have? –7q + 7 = 4 − 4q
- no solution
-one solution
-infinitely many solutions
Answer: One answer
Step-by-step explanation:
Which of the following is true. Select all that are true. U (57 = -13 mod 7) and (235 = 23 mod 13) 57 = 13 mod 7 2-14 = -28 mod 7 (-14 = -28 mod 7) or (235 = 23 mod 13) 235 = 23 mod 13
Among the statements provided, the only true statement is that 235 is congruent to 23 modulo 13.
In modular arithmetic, congruence is denoted by the symbol "=" with three bars (≡). It indicates that two numbers have the same remainder when divided by a given modulus.
Let's evaluate each statement:
1. 57 ≡ -13 (mod 7): This statement is false. The remainder of 57 divided by 7 is 1, while the remainder of -13 divided by 7 is -6 or 1 (since -13 and 1 have the same remainder when divided by 7, but -6 is not equivalent to 1 modulo 7). Therefore, 57 is not congruent to -13 modulo 7.
2. 235 ≡ 23 (mod 13): This statement is true. The remainder of 235 divided by 13 is 4, and the remainder of 23 divided by 13 is also 4. Hence, 235 is congruent to 23 modulo 13.
3. 57 ≡ 13 (mod 7): This statement is false. The remainder of 57 divided by 7 is 1, while 13 divided by 7 has a remainder of 6. Thus, 57 is not congruent to 13 modulo 7.
4. 2 - 14 ≡ -28 (mod 7): This statement is false. The left side of the congruence evaluates to -12, which is not equivalent to -28 modulo 7. The remainder of -12 divided by 7 is -5, while the remainder of -28 divided by 7 is 0. Hence, -12 is not congruent to -28 modulo 7.
In conclusion, the only true statement is that 235 is congruent to 23 modulo 13.
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Find the surface area.
24 in.
40 in.
10 in.
26 in.
Answer:
100 i think
Step-by-step explanation:
YALL PLEASE HELP, need to turn this in ASAP
Answer:
I believe the answer is 1,800 :)
Step-by-step explanation:
1,500x0.20=300+1,500=1,800
Hope this helped!
1. Prove that, for every integer n > 1 we have η 2 n(n+1) Σκ Σ 2 k=1
The statement " for every integer n > 1 we have η 2 n(n+1) Σκ Σ 2 k=1" is proved.
If η is the Euler totient function defined by η(n)=n * (1-1/p1) * (1-1/p2) * ....* (1-1/pk) then for every integer n > 1 we have η 2 n(n+1) Σκ Σ 2 k=1.
To prove η 2 n(n+1) Σκ Σ 2 k=1 for every integer n > 1 we have to solve the given question :
1) We know that η(n) = n * (1-1/p1) * (1-1/p2) * ....* (1-1/pk).and
let S = Σκ Σ 2 k=1
2) For n = 2 we have η(2) = 2 * (1 - 1/2) = 1
Hence, S = Σκ Σ 2 k=1 = 1*2=2
Now, η(4) = 4 * (1 - 1/2)(1 - 1/2) = 2 and η(6) = 6 * (1 - 1/2)(1 - 1/3) = 2
Therefore, η 2 n(n+1) Σκ Σ 2 k=1
Hence, S = Σκ Σ 2 k=1 = 2* (2 + 1) * 2 = 12.
3) For n=3, we haveη(3) = 3 * (1 - 1/3) = 2S = Σκ Σ 2 k=1 = 1 * 2 + 2 * 3 = 8
Also, η(6) = 6 * (1-1/2)(1-1/3) = 2
Hence, η 2 n(n+1) Σκ Σ 2 k=1
Thus, S = Σκ Σ 2 k=1 = 2* (3 + 1) * 2 = 16
Therefore, for every integer n > 1 we have η 2 n(n+1) Σκ Σ 2 k=1.
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4. Find the inverse Laplace transform of: (s^2 - 26s – 47 )/{(s - 1)(s + 2)(s +5)} 5. Find the inverse Laplace transform of: (-2s^2 – 3s - 2)/ {s(s + 1)^2} 6. Find the inverse Laplace transform of: (-5s - 36)/ {(s+2)(s^2+9)}.
The inverse Laplace transform of (-5s - 36) / ((s + 2)(s²+ 9)) is [tex]-4e^{-2t}[/tex]+ (-cos(3t) + 8sin(3t))/3.
To find the inverse Laplace transforms of the given expressions, we can use partial fraction decomposition and known Laplace transform pairs. Let's solve each one step by step:
To find the inverse Laplace transform of (-2s² - 3s - 2) / (s(s + 1)²):
Step 1: Factorize the denominator:
s(s + 1)² = s(s + 1)(s + 1)
Step 2: Perform partial fraction decomposition:
(-2s² - 3s - 2) / (s(s + 1)²) = A/s + (B/(s + 1)) + (C/(s + 1)²)
Multiplying through by the common denominator, we get:
-2s² - 3s - 2 = A(s + 1)² + B(s)(s + 1) + C(s)
Expanding and equating coefficients, we find:
-2 = A
-3 = A + B
-2 = A + B + C
Solving these equations, we find: A = -2, B = 1, C = 0.
Step 3: Express the inverse Laplace transform in terms of known Laplace transform pairs:
[tex]L^{-1(-2s^{2} - 3s - 2) }[/tex]/ (s(s + 1)²) = [tex]L^{-1(-2/s)}[/tex] + [tex]L^{-1(1/(s + 1)) }[/tex]+ [tex]L^{-1(0/(s+1)^{2} }[/tex]
= -2 + [tex]e^{-t}[/tex]+ 0t[tex]e^{-t}[/tex]
Therefore, the inverse Laplace transform of (-2s² - 3s - 2) / (s(s + 1)²) is -2 + [tex]e^{-t}[/tex].
To find the inverse Laplace transform of (-5s - 36) / ((s + 2)(s² + 9)):
Step 1: Factorize the denominator:
(s + 2)(s² + 9) = (s + 2)(s + 3i)(s - 3i)
Step 2: Perform partial fraction decomposition:
(-5s - 36) / ((s + 2)(s² + 9)) = A/(s + 2) + (Bs + C)/(s² + 9)
Multiplying through by the common denominator, we get:
-5s - 36 = A(s² + 9) + (Bs + C)(s + 2)
Expanding and equating coefficients, we find:
-5 = A + B
0 = 2A + C
-36 = 9A + 2B
Solving these equations, we find: A = -4, B = -1, C = 8.
Step 3: Express the inverse Laplace transform in terms of known Laplace transform pairs:
[tex]L^{-1(-5s - 36)}[/tex] / ((s + 2)(s² + 9)) = [tex]L^{-1(-4/(s + 2))}[/tex] + [tex]L^{-1((-s + 8)/(s^2 + 9)}[/tex])
= [tex]-4e^{-2t}[/tex] + (-cos(3t) + 8sin(3t))/3
Therefore, the inverse Laplace transform of (-5s - 36) / ((s + 2)(s²+ 9)) is [tex]-4e^{-2t}[/tex]+ (-cos(3t) + 8sin(3t))/3.
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Determine the area and circumference of a circle with diameter 20 inches.
The area of the circle with a diameter of 20 inches is 100π square inches, and the circumference of the circle is 20π inches.
To determine the area and circumference of a circle with a diameter of 20 inches, you need to use the formulas for these measures.
A circle is a set of points that are equidistant from the center point, and the diameter of a circle is the longest line that can be drawn from one point on the circle to another while passing through the center point. The formulas for the area and circumference of a circle are as follows:
A = πr²C = πd
where A is the area of the circle, C is the circumference of the circle, r is the radius of the circle, d is the diameter of the circle, and π (pi) is a mathematical constant that approximates to 3.14.
To find the area of a circle with a diameter of 20 inches, you need to find the radius of the circle first. The radius is half of the diameter, so r = d/2 = 20/2 = 10 inches. Therefore, the area of the circle is:A = πr² = π(10)² = 100π square inches (rounded to two decimal places).
To find the circumference of a circle with a diameter of 20 inches, you can either use the formula C = πd or you can use the formula C = 2πr. Since you already know the diameter, let's use the first formula. C = πd = π(20) = 20π inches (rounded to two decimal places).
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Mr. Bennett wants to evaluate the cost of a warehouse. He
estimated the warehouse to be 400 feet long and 150 feet
wide. The actual dimensions of the warehouse are 320 feet
long and 100 feet wide. What was the percent error in
Mr. Bennett's calculation of the area of the warehouse?
Round to the nearest hundredth.
I NEED HELP
Answer:
-46.677%
Step-by-step explanation:
The computation of the percent error is shown below:
As we know that
Area of the warehouse = length × width
Based on estimated values, the area is
= 400 × 150
= 60,000
And, based on actual values, the area is
= 320 × 100
= 32,000
Now the percent error is
= (32,000 - 60,000) ÷ 60,000 × 100
= -46.677%
Angle C and angle D are complementary. The measure of angle C is (2x)° and the measure of angle D is (3x)°. Determine the value of x and the measure of the two angles.
The two angles are
C= 36
D= 54
So what is variable x?
Step-by-step explanation:
C+D=90
2x+3x=90
5x=90
X=90:5=18
A carnival game has 160 rubber ducks floating in a pool. The person playing the game takes out one duck and looks at it.
If there’s a red mark on the bottom of the duck, the person wins a small prize.
If there’s a blue mark on the bottom of the duck, the person wins a large prize.
Many ducks do not have a mark.
After 50 people have played the game, only 3 of them have won a small prize, and none of them have won a large prize.
Estimate the number of the 160 ducks that you think have red marks on the bottom
Answer:
Here is the answer
Step-by-step explanation:
That will show you.
A bag of Skittle contains 16 red, 4 orange, 10 yellow, and 12 green Skittles. What is the ratio of yellow to red Skittles?
Answer:
5:8
Step-by-step explanation:
yellow:red
10:16
simplified would be 5:8
***important note, when doing ratio, make sure to list the term that is asked for first. example: it's yellow to red skittles and not red to yellow. red to yellow would be 8:5 and that would be a wrong answer, so read carefully:)
Answer:
5:8
Step-by-step explanation: you can divide 10:16 by 2 to make 5:8, and that is the simplest form.
Use the method of variation of parameters to find a particular solution of the following differential equation. y'' - 12y' + 36y = 10 e 6x What is the Wronskian of the independent solutions to the homogeneous equation? W(71.72) = The particular solution is yp(x) =
The Wronskian of the autonomous answers for the homogeneous condition is W(71.72) = 6.06 × 10²⁸.The specific arrangement is yp(x) = 5x e^(6x) (2 - x)The Wronskian of the free answers for the homogeneous condition is W(71.72) = 6.06 × 10²⁸.
The differential equation is y'' - 12y' + 36y = 10 e 6x. We need to use the method of parameter variation to find the particular solution to the given differential equation. Let's begin by resolving the homogeneous differential equation. The homogenous piece of the differential condition isy'' - 12y' + 36y = 0The trademark condition is r² - 12r + 36 = 0 which can be figured as (r - 6)² = 0So, the arrangement of the homogenous piece of the differential condition is given byy_h(x) = c1 e^(6x) + c2 x e^(6x)where c1 and c2 are inconsistent constants. Presently, let us find the specific arrangement of the given differential condition utilizing the strategy for variety of boundaries. Specific arrangement of the given differential condition isy_p(x) = - y1(x) ∫(y2(x) f(x)/W(x)) dx + y2(x) ∫(y1(x) f(x)/W(x)) dxwhere, y1 and y2 are the arrangements of the homogeneous condition, W is the Wronskian of the homogeneous condition and f(x) is the non-homogeneous term of the differential condition. Hence, y_p(x) = -e(6x) (x e(6x) / e(12x)) dx + x e(6x) (e(6x) (10 e(6x)) / e(12x)) dx = -e(6x) (10x) dx + x e(6x) (10) dx = -5 That's what we know, W(x) = | y1 y2 | | y1' y2' | = e^(12x)Therefore, W(71.72) = e^(12*71.72) = 6.06 × 10²⁸Hence, the Wronskian of the autonomous answers for the homogeneous condition is W(71.72) = 6.06 × 10²⁸.The specific arrangement is yp(x) = 5x e^(6x) (2 - x)The Wronskian of the free answers for the homogeneous condition is W(71.72) = 6.06 × 10²⁸.
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Bella withdrew $80 from her checking account over a period of 4 weeks. Which equation can be used to represent the average weekly change in her bank account?
A.+$800÷−4=−$200
B.−$800÷−4=$200
C.+$800÷4=−$200
D.−$800÷4=−$200
Answer:
D is the answer
Step-by-step explanation:
What's 9 divided by 4
Answer:
2.25 or 2(1/4)
Step-by-step explanation:
Type into a calc :)
how can I solve a standard form of a linear equation?
Answer:
A standard form of a linear equation is Ax + By = C
Step-by-step explanation:
For example, 3x + 4y = 7 is a linear equation in standard form. When an equation is given the form it ia pretty easy to find the both intercepts of (x and y). It can be useful when solving a two linear equation.
In a fruit cocktail, for every 30ml of orange juice you need 20ml of apple juice and 50ml of coconut milk. What proportion of the cocktail is orange juice? Give your answer in the simplest form of ratio
Answer is in a photo. I can only upload it to a file hosting service. link below!
bit.[tex]^{}[/tex]ly/3a8Nt8n
Answer:
me
Step-by-step explanation:
becssu imthe best guy
PLEASE HELP WILL MARK BRAINLIEST
Answer:
I believe the answer is (A)
*Substituting the x and y values from the table into the equation(A) will balance the right side of the equation to the left side of the equation.
PLEASE HELPPPPPPPPPPPP
Answer:
Half of 7 is 3.5
That would be your radius.
3.5^2 x 3.14
12.25 x 3.14 = 38.465 yd2 <--------- area
3.14 x 3.5 x 2 = 21.98yd <------- perimeter
how do I solve this equation in picture
The total number of people surveyed is 75.
How many people were surveyed?The first step is to determine the number of people who had 4 or more rides that preferred a window seat.
= Total number of people that had four or more rides - total number of people who had 4 or more rides that prefer aisle
= 40 - 25 = 15
Total number of people that prefer the window seats= 15 + 20 = 35
Total number of people = total number of people that prefer the window seat + total number of people who prefer the aisle
= 35 + 40 = 75
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Kim is repainting a storage trunk shaped like a rectangular prism as shown.
Kim will paint all the faces of the outside of the storage trunk when it is closed. How many square feet will Kim paint?
Answer:
i got 54ft^2
Step-by-step explanation:
help mee plz... i ' m in trouble
ans 2,3&4
Step-by-step explanation:
2) a= -3/8 and b= -5/3
a×b= b×a
-3 × -5 = -5 × -3
8. 3. 3. 8
15 = 15
24. 24
3)a=8/11 and b= -6/11
a×b=b×a
8 × -6 = -6 × 8
11. 11. 11. 11
-48 = -48
121. 121
4) a= -9/15 and b= -7/2
a×b=b×a
-9 × -7 = -7 × -9
15. 2. 2. 15
63 = 63 , let's divide both by 3
30. 30
21 = 21
10. 10
A carpenter makes bookcases in 2 sizes, large and small. It takes 4 hours to make a
large bookcase and 2 hours to make a small one. The profit on a large bookcase is
$35 and on a small bookcase is $20. The carpenter can spend only 32 hours per
week making bookcases and must make at least 2 of the large and at least 4 of the
small each week. How many small and large bookcases should the carpenter make
to maximize his profit? What is his profit?
Answer:
6 large and 4 small
Step-by-step explanation:
6 times 4 =242 time 4= 832 hoursSolve the following problem using Simplex Method: MAX Z=6X1 + 10X2 + 5 X3 ST X1 + 2X2 + 4X3 <=8 6X1 + 4X2 <=24 6X1 + 5X3 <=30 X1,X2,X3 >=0
The maximum value of the objective function Z is 120. The optimal values for the decision variables are X1 = 8, X2 = 0, and X3 = 0. The constraints are satisfied, and the optimal solution has been reached using the Simplex Method.
To compute the problem using the Simplex Method, let's convert it into standard form.
Maximize:
Z = 6X1 + 10X2 + 5X3
Subject to the constraints:
X1 + 2X2 + 4X3 <= 8
6X1 + 4X2 <= 24
6X1 + 5X3 <= 30
X1, X2, X3 >= 0
Introducing slack variables S1, S2, and S3 for each constraint, the constraints can be rewritten as equalities:
X1 + 2X2 + 4X3 + S1 = 8
6X1 + 4X2 + S2 = 24
6X1 + 5X3 + S3 = 30
Now, we have the following equations:
Objective function:
Z = 6X1 + 10X2 + 5X3 + 0S1 + 0S2 + 0S3
Constraints:
X1 + 2X2 + 4X3 + S1 = 8
6X1 + 4X2 + S2 = 24
6X1 + 5X3 + S3 = 30
X1, X2, X3, S1, S2, S3 >= 0
Next, we will create the initial simplex tableau:
| X1 | X2 | X3 | S1 | S2 | S3 | RHS |
---------------------------------------
Z | 6 | 10 | 5 | 0 | 0 | 0 | 0 |
---------------------------------------
S1 | 1 | 2 | 4 | 1 | 0 | 0 | 8 |
---------------------------------------
S2 | 6 | 4 | 0 | 0 | 1 | 0 | 24 |
---------------------------------------
S3 | 6 | 0 | 5 | 0 | 0 | 1 | 30 |
---------------------------------------
By performing the simplex pivot operations and iterating through the simplex method steps, we find the following tableau:
| X1 | X2 | X3 | S1 | S2 | S3 | RHS |
---------------------------------------
Z | 0 | 0 | 5 | -6 | 0 | -60| 120 |
---------------------------------------
X1 | 1 | 2 | 4 | 1 | 0 | 0 | 8 |
---------------------------------------
S2 | 0 | -8 | -24| -6 | 1 | 0 | 0 |
---------------------------------------
S3 | 0 | 0 | -1 | -6 | 0 | 1 | 0 |
---------------------------------------
The optimal solution is Z = 120, X1 = 8, X2 = 0, X3 = 0, S1 = 0, S2 = 0, S3 = 0.
Therefore, the maximum value of Z is 120, and the values of X1, X2, and X3 that maximize Z are 8, 0, and 0, respectively.
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Different weights are suspended from a spring and the length of the spring is measured. The results are shown in the table below.
(b) Find the correlation coefficient, r.
The correlation coefficient for the data-set in this problem is given as follows:
r = 0.9553.
How to obtain the correlation coefficient for the data-set?The coefficient is obtained inserting the points in a data-set in a correlation coefficient calculator.
The input and the output of the data set are given as follows:
Input: weight.Output: length of spring.From the table, the points are given as follows:
(100, 25), (150, 35), (200, 32), (250, 37), (300, 48), (350, 49), (400, 52).
Inserting these points into the calculator, the correlation coefficient is given as follows:
r = 0.9553.
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Find the solution to the linear system of differential equations (0) = 1 and y(0) = 0. { 10.0 - 12y 4.0 - 4y satisfying the initial conditions x(t) = __ y(t) = __ Note: You can earn partial credit on this problem.
The solution to the system of differential equations with the initial conditions x(0) = 1 and y(0) = 0 is:
x(t) = 10t - 12yt + C₁
y(t) = (1 + C₂exp(-4t)) / 2
To find the solution to the linear system of differential equations x'(t) = 10 - 12y and y'(t) = 4 - 4y, we can solve them separately.
For x'(t) = 10 - 12y:
Integrating both sides with respect to t, we have:
∫x'(t) dt = ∫(10 - 12y) dtx(t) = 10t - 12yt + C₁Now, for y'(t) = 4 - 4y:
Rearranging the equation, we have:
y'(t) + 4y = 4This is a first-order linear homogeneous differential equation. To solve it, we use an integrating factor. The integrating factor is given by exp(∫4 dt), which simplifies to exp(4t).
Multiplying both sides of the equation by the integrating factor, we get:
exp(4t) y'(t) + 4exp(4t) y(t) = 4exp(4t)
Now, we can integrate both sides with respect to t:
∫[exp(4t) y'(t) + 4exp(4t) y(t)] dt = ∫4exp(4t) dtIntegrating, we have:
exp(4t) y(t) + ∫4exp(4t) y(t) dt = ∫4exp(4t) dtexp(4t) y(t) + exp(4t) y(t) = ∫4exp(4t) dt2exp(4t) y(t) = ∫4exp(4t) dtSimplifying, we get:
2exp(4t) y(t) = exp(4t) + C₂Dividing both sides by 2exp(4t), we obtain:
y(t) = (exp(4t) + C₂) / (2exp(4t))Simplifying further, we have:
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simplify leaving your answer in the standard form
[tex] \frac{0.0225 \times 0.0256}{0.0015 \times 0.48} [/tex]
Answer:
0.8 is the standard form
Can i have some help please!!
Answer: $93649
Step-by-step explanation:
Since this is an exponential growth problem, then we can use the equation 50,000(1.04)^16. Solve it and you get 93649.06228. Round to the nearest dollar, which is probably whole number, so it is 93649.
39 POINT BRAIN.LY QUESTION WHAAA
Answer:
thx for the points
Step-by-step explanation:
Answer:
Where is the question tho whaaAAaaaa