hich scenario best describes an object with a displacement of zero?

A train moves uphill as it travels in a straight path.
A person walks 2 miles north and 2 miles west.
A ball rolls from the top to the bottom of a hill.
A race car starts and ends at the same point on a track.

Answer:

The side length of a square is the square root of its area. We know that:

x2 + 4x + 4 = (x + 2)2

Therefore, the side length of the square is x + 2

Answer:

The sum of 25 and 16 is 41.

Step-by-step explanation:

The sum of two numbers, 25 and 16, you can break apart the addends and add them separately to simplify the process. Here's how you can do it:

Break apart the numbers into their place values: For 25, you have 20 and 5, and for 16, you have 10 and 6. This step helps you work with the place values individually.

Add the tens place: In this case, you have 20 (from 25) and 10 (from 16). Adding them gives you 30.

Add the ones place: Now you add the ones place, which is 5 (from 25) and 6 (from 16). Adding them gives you 11.

Combine the sum of the tens place and the sum of the ones place: Take the sum of 30 (from step 2) and 11 (from step 3). Adding them together gives you 41.

So, the sun is 41.

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Hey there! I'm happy to help!

LENGTH OF CONVEYOR BELT

We are going to have to use some trigonometry. Let's think of this as a right triangle. The conveyor belt is the diagonal or the hypotenuse, while the ground is  and the height of the room make a right angle as the legs.

We have a sixty degree angle between the conveyor belt and the ground. This is means that the 21 foot height is the opposite side of our right triangle. So, we are dealing with the opposite and the hypotenuse, so we will use the sine. The sine of an angle is equal to the opposite length divided by the hypotenuse length.

We will set up the following equation and solve for the length of our conveyor belt (c).

\(sin60=\frac{21}{c}\)

We multiply both sides by c.

\(c(sin60)=21\)

We divide both sides by sin60.

\(c=\frac{21}{sin60}\)

If we evaluate this with a calculator, we get that c is equal to 24.2487113..., or 24 when rounded to the nearest foot.

So, the supplies travel 24 feet from one end to the other.

DURATION OF TRAVEL

We want to find how long it takes the supplies to move across the conveyor belt. We see that every minute, it moves 75 feet. We want to see how many minutes it will take to move 24 feet, as that is the length of the conveyor belt as we previously solved. Let's set up a proportion.

\(\frac{feet}{minute} =\frac{75}{1} =\frac{24}{m}\)

We cross multiply, giving us the following equation.

75m=24

We divide both sides by 75.

m=0.32

We want to round to the nearest tenth of a minute, so it will take 0.3 minutes for the supplies to move to the second floor.

Have a wonderful day! :D

Answer:

Its is so u get points make me he brainlst thx

Step-by-step explanation:

Answer:

Explanation:

In this team activity, we were given a weather forecasting problem in which we had to determine the stochastic matrix and calculate the probabilities of different weather conditions for a given day.

To solve the problem, we first needed to determine the stochastic matrix M, which is a matrix that represents the probabilities of transitioning from one state to another. In this case, the three possible states are good, indifferent, and bad weather. Using the given probabilities, we constructed the following stochastic matrix:

M = [[0.7, 0.2, 0.1], [0.6, 0.3, 0.1], [0.4, 0.4, 0.2]]

For the second question, we used the stochastic matrix to calculate the probabilities of bad weather tomorrow, given that there is a 20% chance of good weather and an 80% chance of indifferent weather today. We first calculated the probability vector for today as [0.2, 0.8, 0], and then multiplied it by the stochastic matrix to get the probability vector for tomorrow. The resulting probability vector was [0.14, 0.36, 0.5], so the chance of bad weather tomorrow is 50%.

For the third question, we used the stochastic matrix to calculate the probability of good weather on Wednesday, given that the predicted weather for Monday is 50% indifferent and 50% bad. We first calculated the probability vector for Monday as [0, 0.5, 0.5], and then multiplied it by the stochastic matrix twice to get the probability vector for Wednesday. The resulting probability vector was [0.46, 0.31, 0.23], so the chance of good weather on Wednesday is 46%.

For the final question, we needed to find the steady-state vector, which is a vector that represents the long-term probabilities of being in each state. We calculated the steady-state vector by solving the equation Mv = v, where v is the steady-state vector. The resulting steady-state vector was [0.5, 0.3, 0.2], so in the long run, the chance of bad weather on a given day is 20%.

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The simplified expression is 6x² - 16x + 11.

What is the quadratic equation?

The solutions to the quadratic equation are the values of the unknown variable x, which satisfy the equation. These solutions are called roots or zeros of quadratic equations. The roots of any polynomial are the solutions for the given equation.

The given expression is - 4x + 11 - 2x² + 8x² - 12x.

We first group the terms based on their power of x, like terms together.

The x² terms are 8x² and -2x². These two terms can be combined to give 6x².

The x terms are -4x and -12x. These two terms can be combined to give -16x.

The constant term is 11.

Group 1: 8x², -2x²

Group 2: -4x, -12x

Group 3: 11

Therefore, the simplified expression is 6x² - 16x + 11.

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Answer:

Please check the explanation below.

Step-by-step explanation:

Some of the properties are defined as:

a(b+c) = ab+ac

For example,

suppose a=1, b=2, c=3

1(2+3) = 1(2) + 1(3)

5 = 2+3 = 5

if (a=b), then a-c = b-c

For example,

suppose a=1, b=1, c=3

if a = b ⇒ 1 = 1

then a-c = b-c ⇒ 1-3 = 1 - 3  ⇒ -2 = -2

if (a=b), then a+c = b+c

For example,

suppose a=1, b=1, c=3

if a = b ⇒ 1 = 1

then a+c = b+c ⇒ 1+3 = 1+3  ⇒ 4 = 4

if (a=b), then a×c = b×c

For example,

suppose a=1, b=1, c=3

if a = b ⇒ 1 = 1

then a×c = b×c ⇒ 1×3 = 1 × 3  ⇒ 3 = 3

if (a=b), then a÷c = b÷c

For example,

suppose a=1, b=1, c=3

if a = b ⇒ 1 = 1

then a÷c = b÷c ⇒ 1÷3 = 1 ÷ 3  ⇒ 1/3 = 1/3

Let's solve the given equation using the above properties.

5(x+10) = 20        Given

5x+50 = 20          1) Distriburive property ∵ a(b+c) = ab+ac

5x = -30               2) Subtraction property of Equality ∵ if (a=b), then a-c = b-c

x = -6                    3) Division property of Equality  ∵ if (a=b), then a÷c = b÷c

Step 1: Cross-multiply.

15 /x = 5 /6

(15)*(6)=5*x

90=5x

Step 2: Flip the equation.

5x=90

Step 3: Divide both sides by 5.

5x /5 = 90 /5

x=18

Answer:

x=18

Answer:

x=18

Step-by-step explanation:

divide 15 by 5/6= 15 times 6/5, simplify, 3 times 6, simplify, 18

give the other person brainliestt

Answer:

The answer is 5.9626436782

The probability that a randomly chosen light bulb lasts more than 10,500 hours is 0.0668 (rounded to four decimal places).

The probability that a randomly chosen light bulb lasts more than 10,500 hours is 0.0668(rounded to four decimal places).Here's how to calculate it:Given data mean μ = 9,000 and standard deviation σ = 1,000.To calculate the probability that a random light bulb lasts more than 10,500 hours, convert the problem to a standard normal distribution.

z = (10,500 - μ)/σ = (10,500 - 9,000)/1000 = 1.50

Here's the standard normal distribution curve with the shaded area representing the probability required: Standard normal distribution curve with the shaded area

Now, the area under the curve to the right of z = 1.5 is the probability that a randomly chosen light bulb will last more than 10,500 hours.

Using the Z table, we can look up the value corresponding to a z-score of 1.5. The table gives us a value of 0.9332.Now, the area to the left of z = 1.5 is 1 - 0.9332 = 0.0668, which is the probability that a randomly chosen light bulb lasts more than 10,500 hours, rounded to four decimal places.

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Given:

\(m\angle PQS=90^\circ,m\angle PQR=57^\circ,m\angle RQS=x^\circ\).

To find:

The value of x.

Solution:

From the given figure, it is clear that the angle PQS is a right angle.

\(m\angle PQS=m\angle PQR+m\angle RQS\)

\(90^\circ=57^\circ+x^\circ\)

\(90^\circ-57^\circ=x^\circ\)

\(33^\circ=x^\circ\)

Therefore, the value of x is 33 degrees.

The value of f(g(4)) can be found by evaluating g(4) first, and then substituting that result into the function f(x).

To find f(g(4)), we first evaluate g(4) by substituting 4 into the function g(x):

g(4) = (1/2)(4) + 3 = 2 + 3 = 5

Next, we substitute the result of g(4) (which is 5) into the function f(x):

f(g(4)) = f(5) = 2(5) - 3 = 10 - 3 = 7

Therefore, the value of f(g(4)) is 7.

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Answer:

Step-by-step explanation:

To evaluate the given expression, we need to substitute the given values for x, y, and z. The expression becomes:

yz + x²

Substituting the given values, we get:

(6.1 * 0.2) + (3.2^2)

This simplifies to:

1.22 + 10.24

Therefore, the value of the expression is approximately 11.46.

11.46

gimme brainlyest gang

The Theil's U value of 0.14 for "Model A" indicates that the model's forecasting accuracy is 14% better than the Naive 1 model.

The Theil's U value is a measure of forecasting accuracy that compares a forecasting model to the Naive 1 model, which is a simple benchmark. A Theil's U value of 0.14 for "Model A" suggests that its forecasts are approximately 14% more accurate than those made by the Naive 1 model. It indicates that Model A outperforms the Naive 1 model in terms of prediction accuracy, making it a more reliable and effective forecasting model.

However, the Theil's U value alone does not provide information about specific metrics such as RMSE, average error, or mean squared error. It serves as a relative measure of performance, highlighting the improvement achieved by Model A compared to the Naive 1 model.

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Answer:

c=9

Step-by-step explanation:

it’s because from the angles, you can see that this is an isosceles triangle, there the two sides have to be the same.

Sample size and the confidence level width have an inverse relationship. As the sample size increases, the confidence level width decreases.

When determining a confidence interval for a population parameter, such as the mean or proportion, a larger sample size provides more information about the population. This increased information leads to a narrower confidence interval.

The confidence level width is influenced by two factors: the sample standard deviation (or the variability of the data) and the critical value associated with the desired confidence level. As the sample size increases, the sample standard deviation becomes a more accurate estimate of the population standard deviation. This reduces the variability and leads to a narrower confidence interval.

A larger sample size leads to a decrease in the confidence level width, providing a more precise estimate of the population parameter with a higher level of confidence.

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The function y = 3 - 2x is a linear equation

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

y = 3 - 2x

As a general rule, a linear equation can take any of the following forms

By comparing y = 3 - 2x to the above forms, we have:

Form = Slope-intercept form: y = mx + x

This means that the equation is a linear equation

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The function g(x) graphed here, the limit of g(x) as x approaches -2 is -1, the limit of g(x) as x approaches -1 is 2, and the limit of g(x) as x approaches 0 is 3.

a. limx→−2g(x)

= g(-2)

= -1

Therefore, the limit of g(x) as x approaches -2 is -1.

b. limx→−1g(x)

= g(-1)

= 2

Therefore, the limit of g(x) as x approaches -1 is 2.

c. limx→0g(x)

= g(0)

= 3

Therefore, the limit of g(x) as x approaches 0 is 3.

d. There is no limit of g(x) as x approaches infinity because the graph of the function is not defined at infinity. However, there is no limit of g(x) as x approaches infinity because the graph of the function is not defined at infinity.

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Hi! ❄

  - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

The eccentricity of the conic section below is 1, since the given conic section is a parabola, and any parabola's eccentricity is 1.

Hope that made sense !!

  - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

\(\star\tiny\pmb{_{calligraphy}}\star\)

Answer:

they are called periods

Answer:

18

Step-by-step explanation:

6*6/2

A) Approximately 4.01% of males are expected to be longer than 5.0 m.

B) a. Approximately 2.28% of one-hectare parcels would have more than 1,700 trees.

b. Approximately 76.98% of one-hectare parcels would have between 900 and 1500 trees.

C) The probability is 100% that the thermometer will measure less than -0.50°C or greater than 0.50°C

A)To find the percentage of males expected to be longer than 5.0 m, we need to calculate the z-score and then find the corresponding percentage using the standard normal distribution table.

First, we calculate the z-score using the formula:

z = (x - μ) / σ (where x is the value we want to find the percentage for, μ is the mean, and σ is the standard deviation)

z = (5.0 - 4.3) / 0.4 = 1.75

Using the z-score table, we can find that the percentage of values greater than 1.75 is approximately 0.0401, or 4.01%.

B)

a. To find the percentage of one-hectare parcels with more than 1,700 trees, we need to calculate the z-score and find the corresponding percentage.

z = (x - μ) / σ (where x is the value we want to find the percentage for, μ is the mean, and σ is the standard deviation)

z = (1700 - 1200) / 250 = 2

Using the z-score table, we can find that the percentage of values greater than 2 is approximately 0.0228, or 2.28%.

b. To find the percentage of one-hectare parcels with between 900 and 1,500 trees, we need to calculate the z-scores for both values and find the corresponding percentages.

For 900 trees:

z1 = (900 - 1200) / 250 = -1.2

For 1500 trees:

z2 = (1500 - 1200) / 250 = 1.2

Using the z-score table, we can find the percentage for each z-score:

Percentage for z1 = 0.1151, or 11.51%

Percentage for z2 = 0.8849, or 88.49%

To find the percentage between the two values, we subtract the percentage for z1 from the percentage for z2:

Percentage between 900 and 1500 trees = 88.49% - 11.51% = 76.98%

C. To find the probability that the thermometer will measure less than -0.50°C or greater than 0.50°C, we need to calculate the z-scores for both values and find the corresponding probabilities.

For -0.50°C:

z1 = (-0.50 - 0) / 0.30 = -1.67

For 0.50°C:

z2 = (0.50 - 0) / 0.30 = 1.67

Using the standard normal distribution table, we can find the probabilities for each z-score:

Probability for z1 = 0.0475, or 4.75%

Probability for z2 = 0.9525, or 95.25%

To find the probability of getting a measurement less than -0.50°C or greater than 0.50°C, we add the probabilities together:

Probability less than -0.50°C or greater than 0.50°C = 4.75% + 95.25% = 100%.

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the divider for calculating the distance to the target in centimeters would be 171.5 cm. 1.The speed of sound in air at room temperature (20°C) is approximately 343 meters/second.

2. To convert the speed of sound to centimeters/microsecond, we need to convert meters to centimeters and seconds to microseconds:
- 1 meter = 100 centimeters
- 1 second = 1,000,000 microseconds

So, the speed of sound in centimeters/microsecond is:
(343 meters/second) * (100 centimeters/meter) * (1 second/1,000,000 microseconds) = 0.0343 centimeters/microsecond

3. To find the divider for calculating the distance to the target in centimeters, you need to consider the time it takes for the sound to travel to the target and back. Since the distance is doubled (to the target and back), you need to divide the time by 2. Thus, the divider should be:
(speed of sound in cm/μs) * (time in μs) / 2

For example, if your delay time was 100 microseconds, the calculation would be:
(0.0343 cm/μs) * (100 μs) / 2 = 171.5 cm

So, the divider for calculating the distance to the target in centimeters would be 171.5 cm.

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If today were January 1, 2023, then 80 days from today would be March 22, 2023. Keep in mind that the actual date that is 80 days from today will depend on the current date.

To determine the date that is 80 days from today, you can add 80 days to the current date.

As of my knowledge cutoff date of September 2021, the current date is irrelevant for today. However, I can tell you how to calculate the date that is 80 days from any given date.

Assuming you want to calculate 80 days from today's date, you would add 80 days to today's date. For example, if today were January 1, 2023, then 80 days from today would be:

January 1, 2023 + 80 days = March 22, 2023

So, if today were January 1, 2023, then 80 days from today would be March 22, 2023. Keep in mind that the actual date that is 80 days from today will depend on the current date.

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