help please i’m really stuck and i need help please

Answer:

A = 226.08

Step-by-step explanation:

Assuming that you are  wrapping the sides of the cylinder and the circular top and bottom, then the formula for the surface area of the cylinder is:

A=2πrh+2πr^2 so substitute for each variable A=2(3.14)(3)(9) + 2(3.14)(3)^2

notice how I substituted 3 for the radius since it is 1/3 of 9 (the height)

Solving we get A = 169.56 + 56.52 = 226.08

The output energy spectral density ψy(f) is  \(sinc^2\)(f) * rect(f/(a+2)).

To determine the output energy spectral density ψy(f), we need to find the Fourier transform of the autocorrelation function Rx(τ) and multiply it by the magnitude squared of the Fourier transform of the impulse response H(f).

Given:

Rx(τ) = \(sinc^2\)((a+2)τ)

h(t) = rect(t-(a+1))

First, let's find the Fourier transform of Rx(τ):

Rx(f) = F{Rx(τ)} = F{\(sinc^2\)((a+2)τ)}

Using the property of the Fourier transform, the squared sinc function transforms to a rectangular function:

Rx(f) = rect(f/(a+2))

Next, let's find the Fourier transform of the impulse response h(t):

H(f) = F{h(t)} = F{rect(t-(a+1))}

Using the shifting property of the Fourier transform, we get:

H(f) = \(e^{-j2\pi f(a+1)\)sinc(f)

Now, we can calculate the output energy spectral density ψy(f) by multiplying the Fourier transforms of Rx(τ) and h(t):

ψy(f) = \(|H(f)|^2\) * Rx(f)

ψy(f) = \(|e^{-j2\pi f(a+1)}sinc(f)|^2\) * rect(f/(a+2))

Simplifying, we have:

ψy(f) = \(sinc^2\)(f) * rect(f/(a+2))

Therefore, the output energy spectral density ψy(f) is \(sinc^2\)(f) multiplied by a rectangular function centered at f/(a+2).

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When you are performing multiple transformations it is called a composite transformation.

A number of transformations or sequence of transformations that can be combined into a single transformation is called as composition. The resulting matrix is known as composite matrix. The process of combining is known as concatenation.

A composite transformation (or a composition of transformations) refers to the two or more transformations performed one after the other. For example: a translation followed by a reflection which is again followed by a rotation. Another example can be: a rotation followed by a translation or a rotation followed by a reflection.

Therefore, when you are performing multiple transformations it is called a composite transformation.

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Answer:32

Step-by-step explanation:

The value of x that makes 25x^2 + 70x + c a perfect square trinomial is c = 1225.

To make the quadratic expression 25x^2 + 70x + c a perfect square trinomial, we need to determine the value of c.

A perfect square trinomial can be written in the form (ax + b)^2, where a is the coefficient of the x^2 term and b is half the coefficient of the x term.

In this case, a = 25, so b = (1/2)(70) = 35.

Expanding (ax + b)^2, we have:

(25x + 35)^2 = 25x^2 + 2(25)(35)x + 35^2

= 25x^2 + 70x + 1225.

Comparing this with the given quadratic expression 25x^2 + 70x + c, we can see that c = 1225.

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The half-life of the drug is approximately 2.31 hours (to the nearest hundredth of an hour)

The exponential decay model is obtained by using the formula A(t) = A0ekt.

In this formula,

A(t) is the amount of the drug remaining after t hoursA0 is the initial amount of the drug k is the decay rate in units of h-1.t is the time elapsed in hours.

The amount remaining is decreasing by 30% per hour.

Therefore, the decay rate (k) is -0.3 or 0.3h-1.

The formula is now A(t) = A0ekt

Substitute the given information to get A(t) = 125 e0.3t

The half-life of a substance is the time required for the amount of substance to reduce by half.

We are looking for the time taken for the amount of drug remaining to be 62.5mg (which is half of 125mg).

We can substitute A(t) = 62.5 and solve for t as follows:

62.5 = 125 e0.3t0.5 = e0.3tt = ln(0.5)/0.3 ≈ 2.31 hours

Therefore, the half-life of the drug is approximately 2.31 hours (to the nearest hundredth of an hour)

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Answer:

q=(1,5) t=(-2,3)r=(3,-1)s=(0,0)

Step-by-step explanation:

Answer:

Y= 2x^2-8x+6

Step-by-step explanation:

Hope this help :)

Answer:

$6,937.50

Step-by-step explanation:

Interest = Principal x Rate x Time

I = 25000(.0925)(3)

1. In this context, f(t) = g(t) means that Fran and George will have saved the same amount of money for the summer trip at time t.

2; In this context, f(t) + g(t) represents the total combined savings of Fran and George at time t.

3. The new function rule h(t) is h(t) = 35t + 1000.

4 In this case, the y-intercept is 1000, which means they already have $1000 saved up before they began saving specifically for the summer trip.

1. It represents the point in time when their projected savings will be equal.

2. It is the sum of the amount of money Fran has saved (according to f(t)) and the amount of money George has saved (according to g(t)).

3. To find a new function rule, h(t), that represents the amount of money Fran and George raise together, we simply add their individual savings functions together:

h(t) = f(t) + g(t)

= (20t + 550) + (15t + 450)

= 35t + 1000

So the new function rule h(t) is h(t) = 35t + 1000.

4. The y-intercept of the new function, h(t), is the value of h(0), which can be calculated as:

h(0) = 35(0) + 1000

= 0 + 1000

= 1000

In terms of the context, the y-intercept of the function h(t) represents the amount of money Fran and George already have saved before they start working (at time t = 0). In this case, the y-intercept is 1000, which means they already have $1000 saved up before they began saving specifically for the summer trip.

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Answer:

7, 4

Step-by-step explanation:

Answer:The easiest method is to draw a possibility space first. The grid shows the totals for two dice. There are: 6×6=36 possible outcomes. Of these there are 10 totals which are less than 6 .

Step-by-step explanation:

pls give me brainliest and have a good day and night:)

9514 1404 393

Answer:

Step-by-step explanation:

Horizontally the table values total the number in the first column.

  first row missing table value = 700 -665 = 35

  second row missing table values = 300 -240 = 60

__

The conditional probability formula applies.

  P(contains | positive) = P(contains & positive)/P(positive)

The probability associated with each table entry is that value divided by 1000. Then the numbers in the formula are ...

  P(contains | positive) = .665/(.665+.060) = .665/.725 ≈ 91.7%

\(\huge\star{\underline{\mathtt{\red{A}\pink{N}\green{S}\blue{W}\purple{E}\orange{R}}}}\star\)

35

3591.7

3591.760

Step-by-step explanation:

Horizontally the table values total the

number in the first column.

first row missing table value = 700-665

second row missing table values = 300

-240 60

35

The conditional probability formula

applies.

P(contains I positive) = P(contains &

positive)/P(positive)

The probability associated with each

table entry is that value divided by 1000.

Then the numbers in the formula are ..

.665/.725 91.7%

P(contains I positive) = 665/(665+.060)

Answer:

33/5

Step-by-step explanation:

I believe this is the answer

Answer:

\(7\frac{1}{5} + \frac{ - 3}{5} = \frac{36}{5} + \frac{3}{5} = \frac{39}{5} \)

I HOPE IT IS HELPFUL

Answer:

26°

Step-by-step explanation:

use the inverse trig functions (in this case, sin^-1)

sin^-1(4/9)

Answer:

26.39

Step-by-step explanation:

khan

Answer:

Slope is: 2/10x

Y-intercept is: (0,2)

Equation: y=2/10x+2

Step-by-step explanation:

OK

First we will find the cost of 1 hot dog!!

Divide the cost of hot dogs by number of hot dogs:

\( \sf \frac{255.5}{73} = 3.5\)

So, The cost of 1 hot dog is $3.5...

Now, The number of hot dogs multiplied by 3.5 is 304.5

\( \sf \: x \times 3.5 = 304.5 \\ \sf \: x = \frac{304.5}{3.5} \\ \boxed{ \tt \: x = 87}\)

Thus, She sold 87 hot dogs!!

Answer:

one solution: (1.-4)

Step-by-step explanation:

y = 2x - 6...... (1)

y = -x-3......(2)

Plug y = -x-3 in equation (1)

2x - 6 = - x - 3

2x + x = 6 - 3

3x = 3

x = 3/3

x = 1

Plug x = 1 in equation (2)

y = - 1 - 3

y = - 4

(x, y) = (1, - 4)

Answer:

Yes that answer is correct

Step-by-step explanation:

Im literally god

Without seeing the algorithm, it is impossible to provide an answer.

The question states that there is a cumulative algorithm using an array and a range-based loop, but the actual algorithm is not provided. Therefore, without knowing what the algorithm is doing or what values are being used, it is impossible to determine what will be printed.

The question is incomplete as it does not provide the cumulative algorithm that is being referred to. Therefore, no answer can be provided without additional information.
That without the specific algorithm and code snippet, I am unable to determine what will be printed. For a proper explanation, please provide the cumulative algorithm using an array and a range-based loop that you mentioned.

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Answer:

3

Step-by-step explanation:

These are similar triangle

We can use ratios to solve

12         12+4

------ = ----------

9         9+DC

Using cross products

12( 9+DC) = 9*(12+4)

12 (9+DC) = 9*16

Divide each side by 12

12/12 (9+DC) = 9*16/12

9+DC = 12

Subtract 9 from each side

9+DC-9 =12-9

DC =3

Answer:

3 units

Step-by-step explanation:

We can see that triangle ADE is similar to triangle ACB.

Therefore the ratios of the lengths of their sides must be equal.

We can write AD/AC = AE/AB

we are given AD = 9, AE = 12 and AB = 12 + 4 = 16

Substituting the above values into the equation:

AD/AC = AE/AB

9 / AC = 12/16  (rearranging)

(AC)(12) = (9)(16)

AC = (9)(16)/12

AC = 12

We can also see that

DC = AC - AD

DC = 12 - 9

DC = 3 units

Answer:

perimeter: 22ft

area: \(480ft^2\) be warned, i dont know if the are is correct but that is what I calculated.

Step-by-step explanation:

The area is measurement of the surface of a shape. To find the area of a rectangle or a square you need to multiply the length and the width of a rectangle or a square. Area, A, is x times y.

The perimeter is the length of the outline of a shape. To find the perimeter of a rectangle or square you have to add the lengths of all the four sides. x is in this case the length of the rectangle while y is the width of the rectangle. The area is measurement of the surface of a shape.

Answer:

x = 9

Step-by-step explanation:

combine all the equations and set it equal to 360

10x+ 7 + 88 + 127 + 5x+3 = 360

then combine like terms

15x + 225 = 360

then solve the equation by moving 225 to the right side of the equation

15x = 135

divide both sides by 15

x = 9

(7x-1)times(x-2)

Step-by-step explanation:

Hey there!

Let's simplify.

\(10x+2-7x^2\)

\(10x^2+10x+2\)

The answer we get is \(-7x^2+10x+2\).

Hope this helps! :)

\(\text{-TestedHyperr}\)

Answer:

i have the same ? need help:(

Step-by-step explanation:

Answer:

what is the question

Step-by-step explanation: