the product of two unit step functions in the s-domain (u(s)u(s)) is equivalent to what in the time domain?

Answers

Answer 1

The product of two unit step functions in the s-domain (u(s)u(s)) is equivalent to a ramp function in the time domain.

The unit step function u(t) is defined as 0 for t<0 and 1 for t≥0. When we take the Laplace transform of the unit step function, we get 1/s. Therefore, the product of two unit step functions can be written as:

u(t)u(t) = 1/s * 1/s

= 1/s²

Taking the inverse Laplace transform of 1/s² gives us a ramp function, which is defined as:

r(t) = t*u(t)

Therefore, the product of two unit step functions in the s-domain (u(s)u(s)) is equivalent to a ramp function in the time domain.

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Related Questions

Suppose jobs arrive at a processor according to a Poisson distribution, and let . be the average arrival rate (per minute). The expression (201) (1 + 20+ (202)2 (204)3 + + 2! 3! (204) 9! equals the pr

Answers

This expression gives us the probability of observing 0 to 9 jobs arriving at the processor per minute with an average arrival rate of 20 jobs per minute.

Given that jobs arrive at a processor according to a Poisson distribution with an average arrival rate λ (per minute), we can calculate the probability of observing a specific number of jobs arriving in a given time interval using the Poisson probability formula:

P(X = k) = (e^(-λ) * λ^k) / k!

In your expression, we have the following terms: (201) (1 + 20λ + (20λ)^2 / 2! + (20λ)^3 / 3! + ... + (20λ)^9 / 9!). This expression is actually the expansion of the Poisson probability formula for k=0 to k=9, with a specific arrival rate λ = 20.

To calculate the probability, we can rewrite the expression as:

P(X ≤ 9) = e^(-20) * (1 + 20 + 20^2 / 2! + 20^3 / 3! + ... + 20^9 / 9!)

This expression gives us the probability of observing 0 to 9 jobs arriving at the processor per minute with an average arrival rate of 20 jobs per minute.

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write a quadratic function with real coefficients and the given zero. (use x as your variable.) 5 4i

Answers

The quadratic function with real coefficients and the given zeros of 5 and 4i is: f(x) = x^3 - 5x^2 + 16x - 80.

A quadratic function with real coefficients and the given zeros of 5 and 4i is:

f(x) = (x - 5)(x - 4i)(x + 4i)

Expanding this expression, we get:

f(x) = (x - 5)(x^2 - (4i)^2)

f(x) = (x - 5)(x^2 + 16)

f(x) = x^3 - 5x^2 + 16x - 80

Therefore, the quadratic function with real coefficients and the given zeros of 5 and 4i is:

f(x) = x^3 - 5x^2 + 16x - 80.
Hi! To write a quadratic function with real coefficients and the given zero 5 + 4i, you should also consider its complex conjugate, which is 5 - 4i. This is because complex roots of a quadratic equation with real coefficients always occur in conjugate pairs.

Let x = 5 + 4i and x = 5 - 4i be the zeros of the quadratic function. Using the factored form of a quadratic function, we can write it as:

f(x) = A(x - (5 + 4i))(x - (5 - 4i))

Now, expand the expression inside the parentheses:

f(x) = A((x - 5) - 4i)((x - 5) + 4i)

Multiply the two binomials using the difference of squares formula:

f(x) = A((x - 5)^2 - (4i)^2)

Simplify:

f(x) = A(x^2 - 10x + 25 + 16)

Combine the constant terms:

f(x) = A(x^2 - 10x + 41)

Since we want a quadratic function with real coefficients, A can be any real number. We can choose A = 1 to simplify the expression:

f(x) = x^2 - 10x + 41

So the quadratic function is f(x) = x^2 - 10x + 41.

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Jace took a taxi from his house to the airport. The taxi company charged a pick-up fee of $4. 40 plus $2. 25 per mile. The total fare was $53. 90, not including the tip. How many miles was the taxi ride?

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If Jace took a taxi from his house to the airport and the taxi company charged a pick-up fee of $4. 40 plus $2. 25 per mile and the total fare was $53. 90, not including the tip, the distance traveled by Jace is 22 miles.

Let the miles traveled by Jace be x

According to the question,

The total cost of the travel = pick-up fee + fare per mile

Pick-up fee = $4. 40

Fare per mile = $2. 25 per mile

Total fare = $4. 40 + x ($2. 25)

According to the question,

Total fare = $53. 90

We get the following equation,

$4. 40 + x ($2. 25) = $53. 90

4.40 + 2.25x  = 53.90

2.25x = 53.90 - 4.40

2.25x = 49.50

x = 49.50 ÷ 2.25

x = 22 miles

After solving the equation, we get Jace travels 22 miles.

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A class of 27 students is standing in front of a Do-It-Yourself Photo Booth. "Let's get
a picture of every possible pair of us," suggested Bart. "Well, gee," answered Mandy,
"that'd be a lot of pictures." How many pictures exactly?

Answers

Answer:702

Step-by-step explanation:n*n-1

which two figures have the same shaded area?

Answers

The figures that have the same shaded area are Figure I and Figure IV. The correct option is A. Figure I and Figure IV

Calculating the area : Determining figures with same area

From the question we are to determine the figures that have the same area

Area of Figure I

Area = 12 m × 8 m

Area = 96 m²

Area of Figure II

Area = 1/2 × (12 m × 7.5 m)

Area = 45 m²

Area of Figure III

Area = π (12/2)²

Area = 3.14 × (6)²

Area = 3.14 × 36

Area = 113.04 m²

Area of Figure IV

Area = 1/2 × (6 m + 10 m) × 12m

Area = 1/2 × (16 m) × 12m

Area = 8 m × 12m

Area = 96 m²

Hence, Figure I and Figure IV have the same area

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(Chapter 10) If the parametric curve x = f(t), y = g(t) satisfies g'(1) = 0, then it has a horizontal tangent when t = 1.

Answers

It is true that the slope of the horizontal tangent line to the parametric curve at a point (x(t), y(t)) is given by dy/dx = (dy/dt)/(dx/dt).

The statement is saying that if f(g(t)) has a horizontal tangent at t = 1, then the curve has a well-defined tangent line at that point, which is also a horizontal tangent. Let's break this down step by step:

f(g'(1)) = 0: This means that the derivative of f with respect to its input g(t) is equal to zero at t = 1. In other words, the slope of the tangent line of f(g(t)) at t = 1 is zero.

dx/dt is not zero at t = 1: This means that the curve g(t) has a well-defined tangent line at t = 1, because the slope of the tangent line of g(t) is not infinite (i.e., the derivative dx/dt is defined and finite).

Setting dy/dx = 0 gives dy/dt / dx/dt = 0: This is using the chain rule of differentiation to relate the derivative of f with respect to t (i.e., dy/dt) to the derivative of f with respect to x (i.e., dy/dx) and the derivative of g with respect to t (i.e., dx/dt).

dy/dt = 0 when dx/dt is not zero: Since dy/dx = 0 and dx/dt is not zero, we can conclude that dy/dt must also be zero at t = 1. This means that the slope of the tangent line of f(g(t)) is also zero at t = 1.

Therefore, the curve has a horizontal tangent at t = 1: Since both g(t) and f(g(t)) have horizontal tangents at t = 1, we can conclude that the curve f(x) also has a horizontal tangent at x = g(1). This means that the tangent line to the curve at that point is horizontal.

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Ari plays an online game that charges his debit card $16 per month. Which integer represents the change in Ari’s balance in dollars after paying to play the game for 3 months? Multiple choice question. cross out A)

Answers

Answer: The answer is A -48 dollars

Step-by-step explanation: you times 16 by 3 which make 48 and since its debt you take away so thats negative 48

the regional transit authority for a major metropolitan area wants to determine whether there is a relationship between the age of a bus and the annual maintenance cost. a sample of ten buses resulted in the following data. click on the datafile logo to reference the data. age of bus (years) annual maintenance cost ($) 1 350 2 370 2 480 2 520 2 590 3 550 4 750 4 800 5 790 5 950 (a) choose a scatter chart below with age of bus as the independent variable. (i) (ii) (iii) (iv) - select your answer - what does the scatter chart indicate about the relationship between age of a bus and the annual maintenance cost? the scatter chart indicates there may be a - select your answer - linear relationship between age of bus and annual maintenance cost. older buses generally cost more to maintain, and this scatter chart is consistent with what is expected. (b) use the data to develop an estimated regression equation that could be used to predict the annual maintenance cost given the age of the bus. what is the estimated regression model? let x represent the age of the bus. if required, round your answers to two decimal places. for subtractive or negative numbers use a minus sign even if there is a sign before the blank. (example: -300)

Answers

As the age of the bus increases, the annual maintenance cost generally increases as well. Therefore, the estimated regression model is: y = a + bx = 883.5 + 253.17x where y is the annual maintenance cost and x is the age of the bus.

(a) The correct scatter chart is (i) which has age of bus as the independent variable. The scatter chart indicates there may be a linear relationship between age of bus and annual maintenance cost.

(b) To develop an estimated regression equation, we can use the following steps:

X = (1+2+2+2+2+3+4+4+5+5)/10 = 3

Y = (350+370+480+520+590+550+750+800+790+950)/10

= 643

Calculate the deviations of age of bus (x) and annual maintenance cost (y) from their respective means (X and Y).

x - X: -2, -1, -1, -1, -1, 0, 1, 1, 2, 2

y - Y: -293, -273, -163, -123, -53, -93, 107, 157, 147, 307

Calculate the sum of the product of the deviations of x and y.

∑[(x - X)(y - Y)] = (-2)(-293) + (-1)(-273) + (-1)(-163) + (-1)(-123) + (-1)(-53) + (0)(-93) + (1)(107) + (1)(157) + (2)(147) + (2)(307)

= 4,557

Calculate the sum of the squared deviations of x.

∑[(x - X)²] = (-2)² + (-1)² + (-1)² + (-1)² + (-1)² + 0² + 1² + 1² + 2² + 2²

= 18

Calculate the estimated slope of the regression line, b.

b = ∑[(x - X)(y - Y)] / ∑[(x - X)²]

= 4,557 / 18

= 253.17

Calculate the estimated intercept of the regression line, a.

a = Y - bX

= 643 - (253.17)(3)

= 883.5

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Ms. Hernandez began her math class by saying:


I'm thinking of 5 numbers such that their mean is equal to their median. If 4 of the numbers are 14, 8, 16, and 14, what is the 5th number?


What is the 5th number Ms. Hernandez is thinking of?

A. 13

B. 14

C. 15

D. 16

E. 18

Answers

Ms. Hernandez began her math class by saying: I'm thinking of 5 numbers such that their mean is equal to their median. If 4 of the numbers are 14, 8, 16, and 14 then, the 5th number is 18. The correct answer is option E.

Since there are five numbers and the middle is the center esteem when the numbers are organized in arrange, the center esteem must be one of the given values: 8, 14, 14, or 16.

The cruel of five numbers is the whole of the numbers isolated by 5. On the off chance that the cruel break even with the middle, at that point the whole of the five numbers must rise to five times the middle.

The whole of the primary four numbers is:

14 + 8 + 16 + 14 = 52

So, the fifth number must be:

5 × 14 - 52 = 18

Hence, the reply is E. 18.

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Which of the following sets of ordered pairs represents a function?

{(−3, −3), (−2, −2), (−1, −1), (0, 0), (1, 1)}
{(−3, −3), (−3, −2), (−3, −1), (−3, 0), (−4, −1)}
{(−3, −3), (−3, −1), (−1, −2), (−1, −1), (−1, 0)}
{(−3 −3), (−3, 0), (−1, −3), (0, −3), (−1, −1)}

Answers

The set of ordered pairs that is a function is (d) (0, 0), (1, 1), (4, 2), (9, 3)

Here, we have,

to determine the ordered pair that is a function

The list of options represents the given parameter

As a general rule, for an ordered pair to be a function;

The y values on the ordered pair must point to different x values

In (a) the y values 4, 5, 6 and 7 have the same x value of 3

So, it is not a function

In (b) the y values 5 and 8 have the same x value of 2

So, it is not a function

In (c) the y values -1 and 1 have the same x value of 1

So, it is not a function

In (d) all the y values have different x values

So, it is a function

Hence, the ordered pair that is a function is  (d)

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complete question:

The following sets of ordered pairs represent relations from the set X to the set Y. Which one is a function?

A (3, 4), (3, 5), (3, 6), (3, 7)

B (2, 5), (2, 8), (3, 7), (3, 9)

C (1, -1), (0, 0), (1, 1), (4, 2)

D (0, 0), (1, 1), (4, 2), (9, 3)

Cynthia has measured the weight and miles per gallon of four different cars, listed the data in a table, and graphed the results on a scatterplot. She noticed the points fall closely on a line.
Weight, in hundreds of pounds Miles per Gallon (mpg)
5 32
10 27
12 25
15 22
Using the data values that Cynthia collected, select the correct slope and y-intercept.

Answers

Based on the data provided, we can calculate the slope and y-intercept of the line that fits the data points.

First, let's find the slope (m) using the formula: m = (y2 - y1) / (x2 - x1). We can use the first two data points for this calculation:

m = (27 - 32) / (10 - 5) = (-5) / 5 = -1

Now, let's find the y-intercept (b) using the formula: y = mx + b. We can use the first data point (5, 32) and the slope we found:

32 = -1 * 5 + b
32 = -5 + b
b = 37

Therefore, the correct slope is -1, and the y-intercept is 37.

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I NEED HELP SOLVING THIS
2^m+1=16^m+7

Answers

The solution to the equation 2⁽ᵐ ⁺ ¹⁾ = 16⁽ᵐ ⁺ ⁷⁾ is m = -9.

What is the solution to the solution equation?

Given the equation the question:

2⁽ᵐ ⁺ ¹⁾ = 16⁽ᵐ ⁺ ⁷⁾

To solve the equation 2⁽ᵐ ⁺ ¹⁾ = 16⁽ᵐ ⁺ ⁷⁾  using the equal base method, we can rewrite 16 as a power of 2:

2⁽ᵐ ⁺ ¹⁾ = 16⁽ᵐ ⁺ ⁷⁾

2⁽ᵐ ⁺ ¹⁾ = 2⁴⁽ᵐ ⁺ ⁷⁾

2⁽ᵐ ⁺ ¹⁾ = 2⁽⁴ᵐ ⁺ ²⁸⁾

Now that both sides have the same base, we can equate their exponents and solve for m:

m + 1 = 4m + 28

4m - m = 1 - 28

3m = -27

m = -9

Therefore, the value of m is -9.

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this is a crossword fro my math class it is extra credit and I need it done so someone pls help me

Answers

Answer: I can’t read the words

Step-by-step explanation:

Misha has a cube and a right-square pyramid that are made of clay. She placed both clay figures on a flat surface.
Select each box in the table that identifies the two-dimensional-plane sections that could result from a vertical or horizontal slice through each clay figure.





NEED ANSWER ASAP (THANKS)

Answers

The cube results in a square two-dimensional-plane section when slices horizontally or vertically.

The square right pyramid results in a square when sliced horizontally and a triangle when sliced vertically.

A cube has 6 faces which are all squares.

So when a cube is slice either parallel to the base or perpendicular to the base, the resulting section will be a square.

Whereas, a right square pyramid has a base square and 4 triangular faces joining at a common point.

So when the pyramid is cut vertically, it results in a triangle and when it cuts horizontally, it results in a square.

Hence the cube results in a square in either slices and right square pyramid results in a square or triangle.

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The random variable X follows a Poisson process with the given mean. Assuming u=5, compute the following(a) P(4)(b) P( X<4)(c) P(X2=>4)(d) P(4<=X<=6)

Answers

The probability of X being equal to 4 is 0.1755.

The probability of X being less than 4 is 0.60687.  

The probability of X being greater than or equal to 4 is 0.39313.

The probability of X being between 4 and 6 (inclusive) is 0.49719.



The first thing we need to do is to identify the parameters of the Poisson process. In this case, we are given that the mean is u=5.

(a) P(4):

P(X=4) = (e^(-u) * u^x) / x!

= (e^(-5) * 5^4) / 4!

= 0.1755


(b) P(X<4):

P(X<4) = P(X=0) + P(X=1) + P(X=2) + P(X=3)

= (e^(-5) * 5^0) / 0! + (e^(-5) * 5^1) / 1! + (e^(-5) * 5^2) / 2! + (e^(-5) * 5^3) / 3!

= 0.12465 + 0.20593 + 0.17547 + 0.10082

= 0.60687



(c) P(X>=4):

P(X>=4) = 1 - P(X<4)

= 1 - 0.60687

= 0.39313



(d) P(4<=X<=6):

P(4<=X<=6) = P(X=4) + P(X=5) + P(X=6)

= (e^(-5) * 5^4) / 4! + (e^(-5) * 5^5) / 5! + (e^(-5) * 5^6) / 6!

= 0.1755 + 0.17547 + 0.14622

= 0.49719

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Im unsure wether im correct or not on this problem!

Answers

The angle that is complementary to <BDC is <ADB. Option D

What are complementary angles?

Complementary angles are simply described as pair of angles that sum up to give 90 degrees.

Some properties of complementary angles are;

Two angles are said to be complementary if the sum of their measures is equal to 90 degrees.These pair of angles are either adjacent or non-adjacent.It is important to note that three or more angles cannot be complementary even if their sum is 90 degrees.

From the information given, we have that;

The angles are;

<CDA

<CDB

<BDA

<ADB

The complementary angles are;

<BDC and <ADB

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calculate and interpret a 95% (two-sided) confidence interval for true average co2 level in the population of all homes from which the sample was selected. (round your answers to two decimal places.

Answers

We can say that we are 95% confident that the true population mean CO2 level in all homes falls within the calculated interval.

Without the actual data, we cannot provide a specific confidence interval. However, we can provide the general formula for calculating a confidence interval for the population mean.

Assuming a normal distribution of CO2 levels in homes, a 95% confidence interval for the true population mean can be calculated using the following formula:

CI = X ± z*(σ/√n)

Where:

X is the sample mean

z is the critical value from the standard normal distribution corresponding to the desired confidence level (1.96 for 95% confidence interval)

σ is the population standard deviation (unknown, so we use the sample standard deviation as an estimate)

n is the sample size

To interpret the confidence interval, we can say that we are 95% confident that the true population mean CO2 level in all homes falls within the calculated interval.

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In a circle, an angle measuring 9.8 radians intercepts an arc of length 12.8. Find the
radius of the circle to the nearest 10th.

Answers

The radius of this circle to the nearest tenth is equal to 1.3 units.

How to determine the angle in radians?

In Mathematics and Geometry, you will have to divide the central angle that is subtended by the arc of a circle by 360 degrees if you want to calculate the arc length formed by a circle, and then multiply this fraction by the circumference of the circle.

Mathematically, the arc length formed by a circle can be calculated by using the following equation (formula):

Arc length = rθ

Where:

r represents the radius of a circle.θ represents the central angle.

By substituting the given parameters into the arc length formula, we have the following;

12.8 = r × 9.8

Radius, r = 12.8/9.8

Radius, r = 1.3 units.

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a pool with dimensions of 10 ft radius and 4 ft height fill with water at a rate of 20 gallons a minutes. about how many hours will it take to fill the pool if 1 cubic foot of water is about 7.5 gallons?

Answers

It will take approximately 7.85 hours to fill the pool.

To determine the time needed to fill the pool, first calculate the volume of the pool, then convert the volume to gallons, and finally, divide by the fill rate.

The pool is a cylinder with a radius of 10 ft and a height of 4 ft. The volume of a cylinder is given by the formula V = πr²h.

V = π(10 ft)²(4 ft) = 400π cubic feet ≈ 1256.64 cubic feet

Next, convert the volume to gallons using the given conversion factor:

1256.64 cubic feet * 7.5 gallons/cubic foot ≈ 9424.8 gallons

Now, divide the total gallons by the fill rate of 20 gallons/minute to find the time in minutes:

9424.8 gallons ÷ 20 gallons/minute ≈ 471.24 minutes

Finally, convert the time to hours:

471.24 minutes ÷ 60 minutes/hour ≈ 7.85 hours

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John earned $400 interest at a rate of 6% for 3 years how much money did John originally invest

Answers

John earned $400 interest at a rate of 6% for 3 years. Therefore, the amount of money John originally invested was $2,222.22.

We are able to use the Simple interest formula to resolve this problem:

Simple interest is a simple concept in finance that is used to calculate the interest earned or paid on a essential amount over a positive time period.

Simple interest = (principal x charge x time)

Given that John earned $400 in interest at a price of 6% for three years, we are able to set up the equation as:

400 = (P x 0.06 x 3)

In which P is the principal (the original amount invested).

Simplifying this equation, we get:

400 = 0.18P

Dividing both facets through 0.18, we get:

P = $2,222.22

Thus, John originally invested $2,222.22.

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how do i find the missing length of a triangle the adjacent is 60

Answers

The missing length in the attached right triangle is 8.7

Find the missing length of a triangle

The missing length of a triangle can be calculated using any of the basic trigonometry function

To illustrate this, I will use the attached right triangle where the missing length is x

The value of x in the right triangle can be calculated using the following sine ratio

sin(75) = x/9

Cross multiply the equation

So, we have

x = 9 * sin(75)

Evaluate the products

x = 8.7

Hence, the value of missing length in the attached right triangle is 8.7

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A farmer needs to enclose three sides of a pasture with a fence (the fourth side is a river). The farmer has 43 meters of fence and wants the pasture to have an area of 228 sq-meters. What should the dimensions of the pasture be? (For the purpose of this problem, the width will be the smaller dimension (needing two sides); the length with be the longer dimension (needing one side). Additionally, the length should be as long as possible. )

Answers

The length of the field is 21.5 meters

The width of the field is 10.75 meters

If "w" is the width, then the length is 43 - 2w.

As the area of the rectangular field = length × width

= w(43 - 2w)

Area = [tex]43w - 2w^2[/tex]

the vertex of the x coordinate is w and this is a quadratic equation.

w = [tex]-b/2a[/tex]

Here a = -2 and b = 43

w = .[tex]-43/2(-2)[/tex]

w = [tex]-43/4[/tex] = -10.75

So the width of the field is 12.25 meters.

The length of the filed = 43 - 2(10.75) = 21.5

Area = 10.75 × 21.5 = 231.125 square meters.

The field has an area of 228.

Therefore, the length must be 21.5 meters and the width must be 10.75 meters.

21.5 × 10.75 =294 square meters.

Therefore, the length of the field is 21.5 meters, and the width of the field is 10.75 meters.

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What is the permeter of the reepangle?
4m
4m
4m
4m

Answers

The perimeter of the rectangle is 16m

How to determine the perimeter

It is important that a rectangle has four sides, it also has four angles.

The formula for calculating the perimeter of a rectangle is expressed as;

Perimeter = 2(l + w)

Such that the parameters of the formula are;

P is the perimeter of the rectangle.l is the length of the rectangle.w is the width of the rectangle.

From the information given, we have that;

Substitute the values

Perimeter, P = 2(4 + 4)

add the values

Perimeter = 2(8)

Expand the bracket

Perimeter = 16m

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*Refer to image*
Pls answer I have so many SIMILAR unanswered questions for 20 brilliance too

Answers

The length of the segment VW, obtained using the relationship between similar triangles and Pythagorean Theorem is; VW = 5·√3

What are similar triangles?

Similar triangles are triangles that have the same shape or in which in one of the triangles, two of the angles are congruent to two angles in the other triangle.

The common external tangent indicates that the radius WZ and XY are both perpendicular to the tangent [tex]\overline{VX}[/tex], therefore;

WZ and XY are parallel and triangles ΔVWZ and ΔVXY are similar triangles

VW/5 = VX/15

VW = 5 × (VX/15) = VX/3

ZY = 5 + 15 = 20

VY = VZ + ZY = VZ + 20

VZ = VY/3

VY = VY/3 + 20

VY - VY/3 = 20

(2/3) × VY = 20

VY = 20 × 3/2 = 30

Pythagorean Theorem indicates

VX = √(30² - 15²) = 15·√3

VX = 15·√3

VW = VX/3, therefore;

VW = 15·√3 ÷ 3 = 5·√3

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a is a valid argument that establishes the truth of a theorem. the statements used in a proof can include , which are statements we assume to be true, of the theorem, and previously proven theorems.

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A valid argument is a logical argument in which the conclusion follows necessarily from the premises.

In the context of establishing the truth of a theorem, a valid argument serves as a proof that shows the theorem is true, given certain assumptions.

The statements used in a proof can include axioms, which are statements we assume to be true, as well as previously proven theorems.

Axioms provide the foundation for building the argument, while proven theorems allow us to apply already established knowledge to strengthen our proof.

By using a combination of axioms and proven theorems, we can create a valid argument that effectively establishes the truth of a theorem.

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suppose the time that it takes for a certain infection to be cured is normally distributed with mean (in days) and standard deviation day. the drug manufacturer advertises that it works in 5 days, on average, but measurements on a random sample of 400 patients gave a mean infection time of days. is this evidence that the mean time to be cured is actually more than advertised? we test the hypotheses: and .

Answers

After testing the hypothesis we can conclude that the evidence that the mean time to be cured is actually more than advertised.

To test the hypotheses and determine whether there is evidence that the mean time to be cured is actually more than advertised, we can use a one-sample t-test.

The null hypothesis is that the true mean time to be cured is equal to the advertised mean time, i.e., H0: µ = 5. The alternative hypothesis is that the true mean time to be cured is greater than the advertised mean time, i.e., Ha: µ > 5.

We are given that the sample size is n = 400, the sample mean is x = 5.2 days, and the standard deviation is σ = 1 day.

To conduct the one-sample t-test, we first calculate the test statistic t:

t = (x - µ) / (σ / sqrt(n))

t = (5.2 - 5) / (1 / sqrt(400))

t = 2

where µ = 5 is the hypothesized population mean.

The degrees of freedom for the t-distribution is n - 1 = 399.

Using a t-distribution table or an online calculator with df = 399, we can find the p-value associated with the test statistic t = 2 to be approximately 0.023.

Since the p-value (0.023) is less than the significance level α = 0.05, we reject the null hypothesis and conclude that there is evidence that the mean time to be cured is actually more than advertised.

Therefore, we can say that there is significant evidence that the mean time to be cured is greater than 5 days.

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match the following items. 1 . circular permutation the product of all the natural numbers from an integer down to one 2 . factorial the indicated sum of the terms of an associated sequence 3 . series an order of elements of a set 4 . permutation an ordering of elements in a circle

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Circular permutation refers to the ordering of elements in a circle, factorial refers to the product of all the natural numbers from an integer down to one, series refers to the indicated sum of the terms of an associated sequence, and permutation refers to the order of elements of a set. It is important to understand these terms in order to have a solid foundation in mathematics.

Circular permutation refers to an ordering of elements in a circle. Factorial, on the other hand, is the product of all the natural numbers from an integer down to one. It is denoted by the exclamation mark (!). Series, on the other hand, refers to the indicated sum of the terms of an associated sequence. Finally, permutation is an order of elements of a set.

To summarize, circular permutation refers to the ordering of elements in a circle, factorial refers to the product of all the natural numbers from an integer down to one, series refers to the indicated sum of the terms of an associated sequence, and permutation refers to the order of elements of a set. It is important to understand these terms in order to have a solid foundation in mathematics.


1. Circular permutation - an ordering of elements in a circle.
In a circular permutation, the arrangement of items is considered in a circular fashion rather than in a linear order. The number of circular permutations for 'n' elements can be calculated using the formula (n-1)!.

2. Factorial - the product of all the natural numbers from an integer down to one.
Factorial, denoted by the symbol '!', represents the product of all the positive integers from a given integer down to one. For example, 5! = 5 × 4 × 3 × 2 × 1 = 120.

3. Series - the indicated sum of the terms of an associated sequence.
A series is the sum of the terms in a given sequence, often represented by the summation symbol Σ. For example, the sum of the first 'n' natural numbers is represented as Σ(i=1 to n) i = n(n+1)/2.

4. Permutation - an order of elements of a set.
A permutation refers to the arrangement of elements in a specific order within a set. The number of possible permutations for a set of 'n' elements, taken 'r' at a time, can be calculated using the formula n!/(n-r)!.

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Analyze the diagram below and answer the question that follows.
C
b
#
2
1
3
A. 21
B.23
C. 24
D
15
S
4
In the figure, which angle has the same measure as <2?

Answers

Answer:

<5

Step-by-step explanation:

If two parallel lines are cut by a transversal, corresponding angles are congruent.

Angles 2 and 5 are corresponding angles, so they are congruent.

Answer: <5

1. Christy likes to drive a little fast, generally just 10-15 miles over speed limit. Because she has
received three speeding tickets, her insurance rates have increased. What can Christy do to lower
her premiums?

Answers

Answer:

below

Step-by-step explanation:

There are several things that Christy can do to lower her insurance premiums despite receiving three speeding tickets:

1. Improve her driving habits:

Christy can try to be more careful and avoid speeding in the future. If she can maintain a clean driving record for a certain period of time, her insurance rates may decrease.

2. Take a defensive driving course:

Many insurance companies offer discounts to drivers who take a defensive driving course. Christy can take a course to improve her driving skills and qualify for a discount.

3. Increase her deductible:

By increasing her deductible, Christy can lower her insurance premiums. However, this means that she will have to pay more out of pocket if she gets into an accident.

4. Shop around for better rates:

Christy can compare insurance rates from different companies to find a better deal. She may be able to find a company that offers lower rates despite her previous speeding tickets.

5. Consider dropping coverage: If Christy has an older car, she may want to consider dropping collision coverage to save money. This means that she will have to pay for any damages to her own car out of pocket, but it may be worth it if the savings on her premiums are significant.

Which are correct representations of the inequality –3(2x – 5) < 5(2 – x)? Select two options. x < 5 –6x – 5 < 10 – x –6x + 15 < 10 – 5x A number line from negative 3 to 3 in increments of 1. An open circle is at 5 and a bold line starts at 5 and is pointing to the right. A number line from negative 3 to 3 in increments of 1. An open circle is at negative 5 and a bold line starts at negative 5 and is pointing to the left.

Answers

The requried solution of the given inequality is x > 5 and there is an open circle at 5  and a bold line starts at 5 and points to the right.

As mentioned in the question,

We have,

–3(2x – 5) < 5(2 – x)

Simplify the above inequality,

-6x+15 < 10-5x
x > 5

Since on the number line, there is an open circle at 5  and a bold line starts at 5 and points to the right.

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