Need help asap I don’t understand at all please nd thanks

The rate of change of the current is -19.79.

You provided the function i(t) = Ae^(-t) and you'd like to evaluate the rate of change of the current at time t = 0.01s with A = 20.

Step 1: Find the derivative of the function i(t) with respect to time (t). This will give us the rate of change.
di/dt = -Ae^(-t)

Step 2: Substitute the given values for A and t into the derivative equation.
di/dt = -20e^(-0.01)

Step 3: Evaluate the expression.
di/dt ≈ -20 * 0.99004983 ≈ -19.79

So, the rate of change of the current at time t = 0.01s and A = 20 is approximately -19.79.

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Answer:

Step-by-step explanation:

g(x) = x^3 is the parent function starting at the origin (0,0)

f(x) is the translation of the g(x).

Your teacher taught you that y = (x - h)^3 + k

(h,k) is your shift.

(8,4) meaning right 8 on the x-axis and 4 up on the y-axis.

Ashley's fuel efficiency is approximately 23.19 miles per gallon. To calculate Ashley's fuel efficiency in miles per gallon, you can follow these steps:

Step:1. Fuel efficiency = Miles driven / Gallons of fuel used                                                                                                                Step:2. Fuel efficiency = 385 miles / 16.6 gallons                                                                                                                               Step:3. Fuel efficiency = 23.193 miles/gallon (rounded to three decimal places)
Therefore, Ashley's fuel efficiency for this particular fill-up was approximately 23.193 miles per gallon.                               This means that for every gallon of fuel used, Ashley's car was able to travel approximately 23.193 miles. It's important to note that fuel efficiency can vary depending on factors such as driving habits, vehicle condition, and fuel quality.

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For the first part of the question, let R = {(1,1), (2,2), (3,3), (4,4), (1,2), (2,1), (2,3), (3,2)}. This relation is reflexive because every element in A is related to itself, and it is symmetric because if (x,y) is in R, then (y,x) is also in R. However, it is not transitive because (1,2) and (2,3) are in R, but (1,3) is not in R.

For the second part of the question, let R = {(1,1), (2,2), (3,3), (4,4), (1,2), (2,3), (3,4), (1,3), (2,4)}. This relation is reflexive because every element in A is related to itself, and it is transitive because if (x,y) and (y,z) are in R, then (x,z) is also in R. However, it is not symmetric because (1,2) is in R, but (2,1) is not in R.

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The MSwithin treatments for this analysis is 2.

In analysis of variance (ANOVA), we partition the total variation in a set of data into two types of variation: variation within groups and variation between groups. This partitioning helps us to test whether the means of the groups are significantly different from each other or not.

The formula for calculating the mean square within treatments (MSW) is:

MSW = SSW / dfW

where SSW is the sum of squares within treatments and dfW is the degrees of freedom associated with the SSW.

To calculate MSW, we first need to calculate dfW, which is equal to the total number of observations minus the total number of groups. In this case, there are 4 groups, each with 5 observations, so there are a total of 20 observations:

dfW = 20 - 4 = 16

Next, we can use the given SSwithin treatments value of 32 to calculate SSW:

SSW = 32

Finally, we can plug in the values we have calculated to find MSW:

MSW = SSW / dfW

MSW = 32 / 16

MSW = 2

Therefore, the MSwithin treatments for this analysis is 2.

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Answer:

x ≈ 36.2

Step-by-step explanation:

the segment from the vertex of the triangle to the base is a perpendicular bisector, then

consider the right triangle on the right with legs 15 and 33 , hypotenuse x

using Pythagoras' identity in the right triangle

x² = 15² + 33² = 225 + 1089 = 1314 ( take square root of both sides )

x = [tex]\sqrt{1314}[/tex] ≈ 36.2 ( to the nearest tenth )

Answer:

36.2

Step-by-step explanation:

The tick marks on the two sides of the triangle indicate that the sides are of equal length. Therefore, as the triangle has two sides of equal length, it is an isosceles triangle.

In an isosceles triangle, the altitude is the perpendicular bisector of the base. Therefore, the triangle is made up of two congruent right triangles with:

To calculate the value of x, we can use Pythagoras Theorem:

[tex]\boxed{a^2+b^2=c^2}[/tex]

where:

Substitute the values into the formula and solve for x:

[tex]\implies 15^2+33^2=x^2[/tex]

[tex]\implies 225+1089=x^2[/tex]

[tex]\implies 1314=x^2[/tex]

[tex]\implies x^2=1314[/tex]

[tex]\implies \sqrt{x^2}=\sqrt{1314}[/tex]

[tex]\implies x=36.2491379...[/tex]

[tex]\implies x=36.2\; \rm (nearest\;tenth)[/tex]

Therefore, the value of x is 36.2 units (nearest tenth).

Answer:

8

Step-by-step explanation:

24 divided by 3 is 8

8 in each 1/3 so 8 vanilla

To solve this problem, we need to use the given function to find the length of a fish that weighs 250 grams. We can do this by setting the weight of the fish (w) to 250 grams and solving for the length of the fish (L):

w = 0.034213 L

250 = 0.034213 L

L = 250 / 0.034213

L ≈ 7304.4

Rounding to the nearest tenth of a centimeter, the approximate length of the fish is:

L ≈ 730.4 centimeters

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The continuous-time convolution integral of y(t) is [tex]$y(t) = k e^{-yt} u(t) * (u(t+2)-u(t))$[/tex].

To evaluate this convolution integral, we first need to express the integrand as a piecewise function. Since u(t) is 1 for t >= 0 and 0 for t < 0, we can rewrite u(t+2)-u(t) as a piecewise function:

u(t+2)-u(t) =

1, 0 <= t < 2

0, t >= 2

0, t < 0

Now we can evaluate the convolution integral using the definition:

y(t) = ∫[tex]_0^t[/tex] x(τ)h(t-τ)dτ

Substituting the given functions for x(t) and h(t) and simplifying using the piecewise function for u(t+2)-u(t), we get:

y(t) = k ∫[tex]_0^t[/tex] [tex]e^}(-yt)}[/tex]dτ = [tex]k[-(1/y)e^{(-yt)}]_0^t = k(1 - e^{(-yt)})/y[/tex], t >= 0

Therefore, the continuous-time convolution integral of y(t) is [tex]$y(t) = k e^{-yt} u(t) * (u(t+2)-u(t))$[/tex] for t >= 0.

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You would need about $17,924.30 in 20 years to have the same buying power as $50,000 today, assuming a 5% annual deflation rate.

Option D is the correct answer.

We have,

To calculate the future value of money adjusted for deflation, we can use the formula:

A = P(1 - r)^n

Where:

A = future value of money

P = present value of money

r = deflation rate

n = number of years

Plugging in the given values, we get:

A = 50,000(1 - 0.05)^20

Simplifying the expression inside the parentheses:

A = 50,000(0.95)^20

A ≈ 17,924.30

Therefore,

You would need about $17,924.30 in 20 years to have the same buying power as $50,000 today, assuming a 5% annual deflation rate.

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The probability that all three chips drawn are defective is 2.2%.

To find the probability that all three chips are defective, we can use the formula for the probability of independent events.

First, we need to find the probability of drawing one defective chip from the box. Since there are five defective chips out of fifteen total chips, the probability of drawing a defective chip on the first try is 5/15.

Next, we need to find the probability of drawing another defective chip on the second try. Since we are drawing without replacement, there are now only 14 chips left in the box, including four defectives. So the probability of drawing a defective chip on the second try is 4/14.

Finally, we need to find the probability of drawing a third defective chip. Again, since we are drawing without replacement, there are now only 13 chips left in the box, including three defectives. So the probability of drawing a defective chip on the third try is 3/13.

To find the probability of all three events occurring, we can multiply the probabilities together:

(5/15) x (4/14) x (3/13) = 0.022

So the probability that all three chips drawn are defective is 0.022, or approximately 2.2%.

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Answer: 2xy

Step-by-step explanation:

you need the biggest factor that goes into

The reason why ΔBDC is equilateral include the following: D. Triangle BDC is equilateral because the distance between all three vertices is equal to the radius of the circle.

In Mathematics, an equilateral triangle can be defined as a special type of triangle that has equal side lengths and all of its three (3) interior angles are equal.

In order to determine whether the triangle with any given vertices is an equilateral triangle, we would apply the distance formula to calculate the length of each side of this triangle.

In conclusion, we can logically deduce that the triangle with these vertices is an equilateral triangle because C = A = B i.e "the distance between all three vertices is equal to the radius of the circle."

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Answer: 12 units

Step-by-step explanation:

Since in this situation we're going by units it will be easier. First to create the rectangle just fill in 3 boxes horizontally and 4 units vertically. connect the squares together.

Then to find the area, the formula for that is Base x Height so all you have to do is multiply 4*3 and that's 12.

Answer: 2020

Step-by-step explanation:

101 x 21 = 2121

let x be the number to be added:

101 + x = 2121

x = 2121 - 101

x = 2020

thats your answer :)

Answer:2121

Step-by-step explanation:

True. A counter variable is often used in loops to track the number of times the loop has executed.

In programming, a counter variable is a variable that is used to keep track of the number of times a loop has executed. A counter variable is usually initialized to a starting value, and then incremented or decremented with each iteration of the loop. The loop continues to execute as long as the counter variable meets certain conditions.

The purpose of a counter variable is to allow a loop to repeat a specific number of times. For example, if you want to repeat a block of code 10 times, you can set a counter variable to 0, and then use a loop to execute the code until the counter variable reaches 10.

Counter variables are commonly used in programming languages that support loops, such as C++, Java, Python, and JavaScript. They provide a simple and effective way to repeat code without having to write the same statements over and over again.

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The 99% confidence interval for the population mean is (33.49, 36.51), so the answer is A. 30.5 to 38.1.

We can use the formula for the confidence interval for the population mean when the population standard deviation is known:

CI = X ± z*(σ/√n)

where X is the sample mean, σ is the population standard deviation, n is the sample size, and z is the z-score corresponding to the desired confidence level.

First, let's calculate the z-score for a 99% confidence level. From a standard normal distribution table, we find that the z-score for a 99% confidence level is approximately 2.576.

Next, we can plug in the given values and solve for the confidence interval:

CI = 35 ± 2.576*(5.8/√258)

CI = 35 ± 1.51

CI = (33.49, 36.51)

Therefore, the 99% confidence interval for the population mean is (33.49, 36.51), so the answer is A. 30.5 to 38.1.

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Answer:

-0.2

Step-by-step explanation:

the priority is for the parenthesis

7÷5÷14= 0.1

0.1×-2 = -0.2

The perimeter of the triangle XZW is 176.4 units

From the question, we have the following parameters that can be used in our computation:

The similar triangles

We start by calculating the missing side lengths using proportions

So, we have

YZ/32 = 28/40

So, we have

YZ = 32 * 28/40

YZ = 22.4

Next, we have

30/WZ = 40/(40 + 32)

So, we have

WZ = 30 *  (40 + 32)/40

WZ = 54

The perimeter of triangle XZW is

P = 28 + 22.4 + 54 + 32 + 40

Evaluate

P = 176.4

Hence, the perimeter is 176.4 units

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The probability of Shenanigans selling a Peanut Butter Cup cone next is approximately 31.22%.

To calculate the probability of Shenanigans selling a Peanut Butter Cup cone next, we need to determine the number of cones sold that were not Peanut Butter Cup cones and divide that by the total number of cones sold.

Given that Shenanigans sold a total of 711 ice cream cones last week and 489 of those were either Coffee Cream or Oreo, we can subtract 489 from 711 to find the number of cones that were not Coffee Cream or Oreo;

Number of cones that were not Coffee Cream or Oreo = 711 - 489 = 222

So, out of the total 711 cones sold, 222 were not Coffee Cream or Oreo cones. Therefore, the remaining cones must be Peanut Butter Cup cones.

Now, we can calculate the probability of selling a Peanut Butter Cup cone next by dividing the number of Peanut Butter Cup cones by the total number of cones sold, and then multiplying by 100 to find the result as a percentage;

Probability of selling a Peanut Butter Cup cone next = (Number of Peanut Butter Cup cones / Total number of cones sold) × 100

Probability of selling a Peanut Butter Cup cone next = (222 / 711) × 100

≈ 31.22%

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Answer: 9:51

Step-by-step explanation:

The final coordinates after the given transformation is:

A)  (-(x + 2), -y)

B) (0, 5)

A) When the coordinate (x, y) is mapped by a reflection about the line x = 2, we note:

(1) The y-coordinate is unaffected.

(2) For reflections the distance from the line of reflection to the object is equal to the distance to the image point.

∴ a = 2 + 2 = 4 units

Thus, the image point is 4 units from the line of reflection

The new coordinate is:

((x + 2), y)

The rule for a rotation by 180° about the origin is: (x, y) → (−x, −y) .

The final transformation is: (-(x + 2), -y)

2) Sequel to the translation, the coordinate is (0, 5).

Now, if the point (x, y) is reflected across the line y = a, then the relation between coordinates of actual point and image point will be:

(x, y) → (x, 2a − y) .

Thus, a reflection around the line y = 5 gives:

(0, 2(5) - 5) = (0, 5)

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The equation obtained by taking the Laplace transform of the given initial value problem is:

Y = [5 / ([tex]s^2[/tex] + 25) - 2s - 7] / (s^2 - 25)

To solve the given initial value problem using Laplace transform, we first take the Laplace transform of both sides of the differential equation:

L[y"] - 7L[y] - 18L[y] = L[sin(5t)]

Using the properties of Laplace transform, we have:

[tex]s^2[/tex] Y - s y(0) - y'(0) - 7Y - 18Y = 5 / (s^2 + 25)

Substituting the initial conditions y(0) = -2 and y'(0) = 7, we get:

s^2 Y + 2s + 7 - 7Y - 18Y = 5 / (s^2 + 25)

Simplifying this equation, we get:

s^2 Y - 25Y = 5 / (s^2 + 25) - 2s - 7

Now we can solve for Y:

Y = [5 / (s^2 + 25) - 2s - 7] / (s^2 - 25)

We can use partial fraction decomposition to simplify the expression further:

Y = [A s + B] / (s + 5) + [C s + D] / (s - 5) - (2s + 7) / (s^2 + 25)

Multiplying both sides by the denominator (s^2 - 25), we get:

[tex]As^3 + Bs^2 - 5As^2 - 5Bs + Cs^3 - Ds^2 - 5Cs + 5D - (2s + 7)(s^2 - 25) = 5[/tex]

Simplifying and equating the coefficients of the like powers of s on both sides, we get:

A + C = 0

B - 5A - D + 50 = 0

5B - 5C - 2 = 0

Solving these equations, we get:

A = -C

B = 20/9

C = -20/9

D = -7/9

Substituting these values, we get:

Y = [-20s/9 - 20/9] / (s + 5) + [20s/9 + 7/9] / (s - 5) - (2s + 7) / (s^2 + 25)

Taking the inverse Laplace transform, we get the solution y(t):

y(t) = [-20/9 exp(-5t) - 20/9] + [20/9 exp(5t) + 7/9] cos(5t) - (2/5) sin(5t)

Therefore, the equation obtained by taking the Laplace transform of the given initial value problem is:

Y = [5 / (s^2 + 25) - 2s - 7] / ([tex]s^2 - 25[/tex])

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These two events are not mutually exclusive, but they are not independent.

To determine the relationship between the two events, "Owner has a Chevy" and "Owner's truck has four-wheel drive," it is necessary to analyze the information provided in the two-way table. Unfortunately, the table is not included in your question.

1. Mutually exclusive: Two events are mutually exclusive if the occurrence of one event excludes the occurrence of the other event. In other words, they cannot happen at the same time.

2. Independent: Two events are independent if the occurrence of one event does not affect the probability of the other event occurring.

After analyzing the two-way table, you should be able to determine if these events are mutually exclusive, independent, or neither.

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Margin of error (E) is 0.015 and proportion (p) is 0.637.

We are given the confidence interval (0.622, 0.652) and we need to find the margin of error (E) and the sample proportion (p).

Part 1: Margin of error (E) 1. Calculate the midpoint of the confidence interval by adding the lower limit (0.622) and the upper limit (0.652), then divide by 2: Midpoint = (0.622 + 0.652) / 2 = 1.274 / 2 = 0.637 2.

Find the margin of error (E) by subtracting the midpoint from the upper limit (or lower limit, it should give the same value): E = 0.652 - 0.637 = 0.015

Part 2: Sample proportion (p) 3. The midpoint we calculated earlier is the sample proportion (p): p = 0.637

Your answer: Part 1 E = 0.015 Part 2 p = 0.637

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To estimate the water flow rate in the pipe, we need to measure the velocity at two radial locations and then use the integral formula to calculate the flow rate. The formula tells us that the flow rate is equal to the integral of 2πrv with respect to r, where r is the radial location, v is the velocity, and the limits of integration are 0 to 2 (since the pipe has a radius of 2m).

Since we don't know how the velocity varies along the radial location, we need to choose two locations that will give us the most accurate estimate of the flow rate. The best locations to choose are where the velocity varies the most, which is usually near the center and near the edge of the pipe.

Based on this, the two radial locations that would give us the most accurate calculation of the flow rate are 0.42 and 1.58. These locations are close to the center and the edge of the pipe, respectively, and will give us a good estimate of how the velocity varies along the radial location.

Therefore, the answer is 0.42, 1.58.

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This statement is incomplete and does not make sense. It cannot be evaluated as true or false without more information.

(a) In R, 2 € B.(-2)

False.

Explanation: The statement means that 2 is an element of the closed ball centered at -2 with radius 1. But this is not true since the distance between 2 and -2 is greater than 1 (|2 - (-2)| = 4).

(b) In R, -1.5 € B(0)

True.

Explanation: The statement means that -1.5 is an element of the closed ball centered at 0 with radius 1. Since the distance between -1.5 and 0 is less than 1 (|-1.5 - 0| = 1.5 < 1), the statement is true.

(c) In R(1,5,0.5) € B(-1,0)

False.

Explanation: The statement means that (1,5,0.5) is an element of the closed ball centered at (-1,0) with radius 1. But the distance between these two points is greater than 1, since

d((1,5,0.5), (-1,0)) = √[(1-(-1))^2 + (5-0)^2 + (0.5-0)^2] = √[4+25+0.25] = √29.25 > 1.

(d) In R.

True.

Explanation: This statement is incomplete and does not make sense. It cannot be evaluated as true or false without more information.

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The value of the equation in terms of x is x = [tex]\sqrt{\frac{y^2-270}{135}}[/tex].

Given is an equation, y = 3√(x²+2)15, we need to convert it in terms of x,

So,

y = 3√(x²+2) 15​

Squaring both sides,

y² = 9 [(x²+2)15]

y² = 9 [15x²+30]

y² = 135x²+270

y²-270 = 135x²

y²-270 / 135 = x²

x = [tex]\sqrt{\frac{y^2-270}{135}}[/tex]

Hence, the value of the equation in terms of x is x = [tex]\sqrt{\frac{y^2-270}{135}}[/tex].

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