The Z-transform of the function \(f(t) = 1 - 0.7e^{-t/5} - 0.3e^{-t/8}\) can be computed. The initial value and final value of the function can then be determined using the Z-transform.
The Z-transform is a mathematical tool used to convert a discrete-time signal into the Z-domain, which is analogous to the Laplace transform for continuous-time signals.
To find the Z-transform of the given function \(f(t)\), we substitute \(e^{st}\) for \(t\) in the function and take the summation over all time values.
Let's assume the discrete-time variable as \(z^{-1}\) (where \(z\) is the Z-transform variable). The Z-transform of \(f(t)\) can be denoted as \(F(z)\).
\(F(z) = \mathcal{Z}[f(t)] = \sum_{t=0}^{\infty} f(t) z^{-t}\)
By substituting the given function \(f(t) = 1 - 0.7e^{-t/5} - 0.3e^{-t/8}\) into the equation and evaluating the summation, we obtain the Z-transform expression.
Once we have the Z-transform, we can extract the initial value and final value of the function.
The initial value (\(f(0)\)) is the coefficient of \(z^{-1}\) in the Z-transform expression. In this case, it would be 1.
The final value (\(f(\infty)\)) is the coefficient of \(z^{-\infty}\), which can be determined by applying the final value theorem. However, since \(f(t)\) approaches zero as \(t\) goes to infinity due to the exponential decay terms, the final value will be zero.
Therefore, the initial value of \(f(t)\) is 1, and the final value is 0.
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PLEASE HELP!!!! THIS IS DUE IN AN HOUR! Also please don’t give me the wrong answer. I will know if u do especially if u do it just to get points.. Please don’t troll me or anything like that.. Reflect the point (2,-4) over the y-axis. what are the new coordinates of that point after the reflection?
A. (2,4)
B.(-2,4)
C.(-2,-4)
D.(-4,2)
Answer:
C
Step-by-step explanation:
a point (x, y) reflected over y-axis becomes ( -x, y)
(2, -4) becomes (-2, -4)
PLEASE HELP ME BRAINLIEST IS THE REWARD
Answer:
13.3=c
Step-by-step explanation:
The hypotenuse can be found with the equation \(a^2+b^2=c^2\). For this problem, let
a=8.3
b=10.4
So,
\((8.3)^2+(10.4)^2=c^2\\177.05=c^2\\\sqrt{177.05}=\sqrt{c^2}\\13.31=c\)
Jenny has a bank account that pays 2.13% simple interest. The balance is $3000. When will the account grow to $3,800? Round to the nearest tenth of a year.
It will take 12.51 years for a Jenny's balance of 3000 to grow to 3800
Balance in Jenny's account = $3000
Rate of interest = 2.13%
Required amount = 3800
Simple interest is a quick and simple technique to compute interest on money. Interest is always applied to the initial principal amount and is calculated at the same rate for each time cycle.
The formula for simple interest is given:
Simple interest = P*R*T/100
where P = principal amount invested
R = rate of interest
T = time period in years
Substituting the values in the formula we get:
Amount = P*R*T/100 + P
3800 = 3000*2.13*T/100 + 3000
800 = 63.9T
T = 12.51
So, it will take 12.51 years
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simplify 2√25y^8 × 4√6y^3
Answer:
\(2\sqrt[]{25y^8}\times4\sqrt[]{6y^3}=8\sqrt[]{150y^{11}}\)Explanation:
Given the expression:
\(2\sqrt[]{25y^8}\times4\sqrt[]{6y^3}\)To simplify this, first rewrite the expression as
\(2\times4\times\sqrt[]{25y^8\times6y^3}\)This is the same as
\(2\times4\times\sqrt[]{25\times6\times y^8\times y^3}\)Evaluating this, we have
\(\begin{gathered} 8\sqrt[]{150\times y^{8+3}} \\ \\ =8\sqrt[]{150\times y^{11}} \\ \\ =8\sqrt[]{150y^{11}} \end{gathered}\)1. Use the function f (x) to answer the questions:
f(x) = 2x^2 − 3x − 5
Part A: What are the x-intercepts of the graph of f(x)? Show your work. (2 points)
Part B: Is the vertex of the graph of f(x) going to be a maximum or a minimum? What are the coordinates of the vertex? Justify your answers and show your work. (3 points)
Part C: What are the steps you would use to graph f(x)? Justify that you can use the answers obtained in Part A and Part B to draw the graph. (5 points)
2. The graph below shows a company's profit f(x), in dollars, depending on the price of pens x, in dollars, sold by the company: (picture of graph attached below)
Graph of quadratic function f of x having x intercepts at ordered pairs 0, 0 and 6, 0. The vertex is at 3, 120.
Part A: What do the x-intercepts and maximum value of the graph represent? What are the intervals where the function is increasing and decreasing, and what do they represent about the sale and profit? (4 points)
Part B: What is an approximate average rate of change of the graph from x = 3 to x = 5, and what does this rate represent? (3 points)
Part C: Describe the constraints of the domain. (3 points)
I promise to give braInliest to the correct answer.
Answer:
A vertical shift is when the graph literally moves vertically, up or down. The movement is all based on what happens to the y-value of the graph. The y-axis of a coordinate plane is the vertical axis. When a function shifts vertically, the y-value changes.
Step-by-step explanation:
If you flip a coin 2 times, what is the best prediction possible for the number of times it will land on tails?
The probability that it would have to land on tails is 1
How to solve for the probabilityThe coin is known to have two sides.
The two sides of a coin are the head and the tail
the probability of head is given as 50 percent
The probability of tail is also given as 50 percent
Given that the coin is going to be flipped two times, the probability that it would have to land on tail is given as
2 * 50 percent
= 2 * 0.5
= 1
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16 days 5 hours 23 minutes. how many minutes and hours come out in total?
Answer:
389 hours and 23 minutes
Step-by-step explanation:
16x24=384
384+=5=389
and 23 minutes
The circumference A of a circle varies directly with its radius. A circle with a radius of 4 has a circumference of about 25.1 in.2. What would be the circumference of a circle with a radius of 9 in.?
What is the value of the x in the equation? x+1/8=3/4
Answer:
x = 5/8
Step-by-step explanation:
Isolate the variable by subtracting 1/8 from both sides:
3/4 - 1/8 = 5/8
Now, the equation is:
x = 5/8
Therefore, the answer is 5/8
Find the value of N that will give
an error less than .001
Answer:
1/√e = .60653
1 - 1/2 + 1/8 - 1/48 + 1/384 = .60677
So N = 4.
give 2 examples of math multiplication problems using rational numbers where the product will be positive
Answer:
1. Multiply 2/7 by 3/5
Solution:
2/7 × 3/5
= 2 × 3/7 × 5
= 6/35
2. Multiply 5/9 by (-3/4)
Solution:
5/9 × (-3/4)
= 5 × -3/9 × 4
= -15/36
= -5/12
Step-by-step explanation:
What is the length of EH
Answer:
It could be 3x - 3
Step-by-step explanation:
In the hospital, 80 people were admitted Friday, 25% of these admissions were women in labor to have babies. How many women were in labor? O A 25 OB. 20 O C. 35 O D. 30
Answer:
Step-by-step explanation:
25% it means 1/4 of the total
1/4 of 80 is 20 (80/4=20)
answer B
-10y + 9x = -9
10y + 5x = -5
Giselle's as a wallet containing four $5 bills, five $10 bills and three $20 bills. She pulls out two bills, one at a time without the first bill being returned to the wallet. Find the probability that both bills that she pulls out will be $5 bills.
Answer:
the answer is 4/12
Step-by-step explanation:
PLSSS I NEED THE ANSWER TO THIS
( 6-2² + 5 ) X 8
Answer:
\(7x^{8}\)
32. Find the ratio of the side lengths of the small triangle to the large
triangle.
3/10
6/20
3/2
2/3
Answer:
2/3
Step-by-step explanation:
that the ratio of that number
Assignment #2 Question No.1 Evaluate this complex number in rectangular form 6 e/300 + j5 - 3 + 450
The evaluated complex number in rectangular form is (6cos(300) - 3) + (6sin(300) + j5).
To evaluate the complex number 6 e/300 + j5 - 3 + 450 in rectangular form, we need to convert it from polar form to rectangular form.
The polar form of a complex number is given by r e^(jθ), where r is the magnitude and θ is the angle in radians. In this case, we have:
r = 6
θ = 300 degrees = (5π/6) radians
Using Euler's formula e^(jθ) = cos(θ) + j sin(θ), we can write:
6 e^(j300) = 6 (cos(5π/6) + j sin(5π/6))
= 6 (-1/2 + j √3/2)
= -3 + j3√3
Now we can add this to the real number -3 + 450, to get:
-3 + j3√3 + (-3 + 450)
= 444 + j3√3
Therefore, the rectangular form of the complex number 6 e/300 + j5 - 3 + 450 is 444 + j3√3.
To evaluate the complex number in rectangular form, given the expression 6e^(300) + j5 - 3 + 450, follow these steps:
1. Convert the exponential form (6e^(300)) to rectangular form.
2. Combine the real parts and imaginary parts.
Step 1: Converting exponential form to rectangular form:
6e^(300) = 6(cos(300) + jsin(300))
Step 2: Combining real and imaginary parts:
Real part: 6cos(300) - 3
Imaginary part: 6sin(300) + j5
So, the evaluated complex number in rectangular form is (6cos(300) - 3) + (6sin(300) + j5).
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Solve 7x + 4 =- 3x - 26
Answer:
x=−3 is your answer :)
Step-by-step explanation:
Steps for Solving Linear Equation
7x+4=−3x−26
Add 3x to both sides.
7x+4+3x=−26
Combine 7x and 3x to get 10x.
10x+4=−26
Subtract 4 from both sides.
10x=−26−4
Subtract 4 from −26 to get −30.
10x=−30
Divide both sides by 10.
x=
10
−30
Divide −30 by 10 to get −3.
x=−3
a deck of cards contains red cards numbered 1,2,3,4,5,6,7,8,9, blue cards numbered 1,2,3,4,5 and green cards numbered 1,2,3,4,5,6,7,8,9,10,11,12,13,14,15. if a single card is picked at random, what is the probability that the card is green?
The deck of cards contains a total of 29 cards, of which 15 are green. Therefore, the probability of picking a green card at random can be calculated by dividing the number of green cards by the total number of cards, giving:
P(green) = 15/29
This probability can also be expressed as a decimal or a percentage. As a decimal, it would be 0.5172, and as a percentage, it would be 51.72%. This means that there is a slightly higher than 50% chance of picking a green card at random from this deck.
It is important to note that this probability assumes that the deck is well-shuffled and that all cards have an equal chance of being picked. If the deck is not well-shuffled or if some cards are missing or duplicated, the probability of picking a green card would be affected.
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are the whole numbers a subset of natural numbers?
Answer:
The natural numbers along with number 0 (zero) form the set of whole numbers i.e., 0, 1, 2, 3,, are whole numbers. The set of whole numbers is denoted by . = {0, 1, 2, 3, …} Set of natural numbers is the proper subset of the set of whole numbers.
Step-by-step explanation:
Consider the following statements about variance investigation: 1. The absolute size of a vaniance is more important than the relative size when trying to decide what viriances to irvestignte II. Variance investigation invotves a look at enly unfavorable variances. III Variance investigation is typically based on a cost-benefit analysis. Which of the above statements is (are) true? I only. II and III. III only. If only. 1, II, and III:
The correct answer is: III only. Variance investigation is typically based on a cost-benefit analysis.
Statement I is incorrect because the relative size of a variance, in comparison to other variances, can be important in understanding its significance.
Statement II is incorrect because variance investigation does not focus solely on unfavorable variances. Both favorable and unfavorable variances are considered during the investigation.
Statement III is true. Variance investigation is typically based on a cost-benefit analysis, where the potential benefits of investigating and addressing variances are weighed against the associated costs.
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find the equation of line (use exact numbers)
Answer:
\(y=3x+3\)
Step-by-step explanation:
Use the slope-intercept form:
\(y=mx+b\)
m is the slope and b is the y-intercept. The y-intercept is the place where x is equal to 0, and the slope is the change in the y-axis over the change in the x-axis, otherwise known as rise over run ( \(\frac{rise}{run}\) ).
If you study the graph, you can see that the line crosses the y-axis at (0,3), so 3 is the y-intercept. Insert into the formula:
\(y=mx+3\)
Now find the slope. Use the slope formula:
\(\frac{y_{2}-y_{1}}{x_{2}-x_{1}}=\frac{rise}{run}\)
You need two points first. You can use the y-intercept (0,3) and another even point, like (1,6). Insert the values:
\((0_{x1},3_{y1})\\(1_{x2},6_{y2})\\\\\frac{6-3}{1-0}=\frac{3}{1}=3\)
The slope is 3. Insert this value:
\(y=3x+3\)
:Done
The probability of one event given the known outcome of a (possibly) related event is known as _____ probability.
a. marginal
b. unconditional
c. conditional
d. joint
The probability of one event given the known outcome of a (possibly) related event is known as unconditional probability.
Given an incomplete sentence related to probability.
We are required to fill the sentence by the appropriate terms given as options.
Probability is basically the chance of happening an event among all the events possible. It cannot be negative.
Marginal probability is basically the probability of an event irrespective of the outcome of another variable.
Conditional probability is basically probability of one event occuring in the presence of a second event.
Unconditional probability is basically the chance that a single outcome results among several possible outcomes.
Joint probability is a basically a statistical measure that calculates the likelihood of two events occurring together and at the same point in time.
From the above definitions and the sentence given we can say that the appropriate term is unconditional.
Hence the appropriate term which can be filled in the sentence is unconditional.
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write a formula for f, the specific antiderivative of f. (remember to use absolute values where appropriate.) f(u)
The antiderivative of a function f will be the integral of differentiated value of the function i.e. the function itself.
What is Antiderivative of a function?
A function is said to be antiderivative if its derivative equals the original function. The antiderivative function is the same as an indefinite integral. The limit of a sum of terms f (x) x in the limit that approaches zero, where is the integrand function, is known as a definite integral.
Considering a function f(x) = Sin x
dy/dx = Cos x
Now, the integral of Cos x would be known as Anti derivative.
here, ∫ Cos x = Sin x
thus, Anti derivative of Cos x is equal to the function itself.
hence, proved.
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Helpppppppppppppppppppppppp plssssss
Please help with 19,20,21 thank you !
Answer:
20: 2 years
Step-by-step explanation:
in words explain how to determine the y intercepts of a rational function. be sure to include if theres a specific way to easily find the y intercept and the possible number of y intercepts
Answer:
evaluate f(0)there will be 0 y-intercepts if f(0) is undefined, 1 otherwise.Step-by-step explanation:
You want to know how to determine the y-intercepts of a rational function, and their possible number.
Rational functionA rational function f(x) is the ratio of two polynomial functions p(x) and q(x):
f(x) = p(x)/q(x)
As such, both numerator and denominator have single function values for any value of the independent variable. The y-intercept of f(x) is ...
f(0) = p(0)/q(0)
The values of p(0) and q(0) are simply the constant terms in those respective functions.
The simple way to find the y-intercept is to look at the ratio of the constant terms in the polynomial functions making up the rational function. If that is defined, there is one y-intercept. If it is undefined (q(0)=0), then there are no y-intercepts.
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1. arva teachers were discussing how many pull-ups they can do. mr. leppold claims he can do 3 more pull-ups than mr. will. mrs. crump says she can do 5 more than mr. leppold.
a. write an equation for how many pull-ups each teacher can do, using variables (l for mr. leppold, w for mr. will, c for mrs. crump):
l =
c =
w =
b. make an equation for the number of pull-ups for mr. will using the variable c: w =
c. if mr. leppold can do 18 pull-ups, mr. brennan can do ____ pull-ups and mrs. crump can do ___ pull-ups.
By using the variable Mr. Leppold can do 18 pull-ups, Mr. Will can do 15 pull-ups, and Mrs. Crump can do 23 pull-ups. Mr. Leppold can do 3 more pull-ups than Mr. Will and Mrs. Crump can do 5 more than Mr. Leppold.
To solve this problem, we need to set up equations using the given information. Mr. Leppold claims he can do 3 more pull-ups than Mr. Will, so we can express that as l = w + 3. Mrs. Crump says she can do 5 more than Mr. Leppold, so we can write c = l + 5. We can then substitute l = w + 3 into c = l + 5 to get c = w + 8. This gives us the equations l = w + 3, c = l + 5, and c = w + 8. We can then substitute in a number for l (18) to solve for the other two variables. When l = 18, we get w = 15 and c = 23. Therefore, Mr. Leppold can do 18 pull-ups, Mr. Will can do 15 pull-ups, and Mrs. Crump can do 23 pull-ups.
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6 The quadrilateral below is a trapezoid.
35 meters
74 meters
74 meters
24 meters
175 meters
What is the area, in square meters, of this
trapezoid?
Answer:
2520 m^2
Step-by-step explanation:
The area formula for trapezoid is (top + base)*height / 2, so (35 + 175)*24 / 2 = 2520 m^2