Anica volunteers to fold T-shirts she fold 8 T-shirts every 6 minutes how many t-shirts will anica make in 45 minutes

Answer:

A

Step-by-step explanation:

option A has two linear equations that intersect at one point

option B has two linear equations that are parallel and do not intersect

option C has one linear equation and an absolute value equation that intersect at two points

option D has one linear equation and a quadratic equation that intersect at two points

Answer:

Compound interest; $5.42

Step-by-step explanation:

(C) Regression analysis is the statistical method commonly used to estimate the level and trend in a time series by modeling the relationship between the data and independent variables.

Regression analysis is the statistical method used to estimate the level and trend in a time series. Time series data represents observations taken at different points in time and is commonly used to analyze trends and patterns over time.

Regression analysis allows us to model the relationship between a dependent variable (in this case, the time series data) and one or more independent variables (such as time or other relevant factors). By using regression analysis, we can identify the underlying trend in the time series and estimate its level.

The regression model captures the relationship between the dependent variable (the time series) and the independent variable(s) by fitting a line or curve that best represents the data. This line or curve helps to identify the overall trend and level of the time series.

While moving average, simulation method, covariance analysis, and correlation analysis are useful techniques in analyzing time series data, they are not specifically designed to estimate the level and trend in a time series. Therefore, (C) regression analysis is the most appropriate method for estimating the level and trend in a time series.

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Answer:

12 hours

Step-by-step explanation:

using the relationship

D = ST ( D is distance, S is average speed and T is time in hours )

calculate average speed by dividing both sides by T

S = \(\frac{D}{T}\) = \(\frac{469}{7}\) = 67 mph

calculate time by dividing both sides by S

T = \(\frac{D}{S}\) = \(\frac{804}{67}\) = 12 hours

Answer:

Step-by-step explanation:

Distance travelled by Kala in 7 hours= 469 mi.

Distance travelled by Kala in 1 hour=  \(\frac{469}{7}\)

                                                          = 67 mi.

Time taken by Kala to travel 804 miles= \(\frac{804}{67}\)

                                                                = 12 hours

∴ it will take her 12 hours to cover a distance of 804 miles.

Answer:

42

Step-by-step explanation:

138+42=180

and since they are parallel lines 1=2

1 = 42

2 = 42

The respective names of the point of concurrency is:

1. Circumcenter

2. Incenter.

3. Centroid

4. Orthocenter

Point of concurrency:

The point of concurrency is a point where three or more lines or rays intersect with each other.

Circumcenter:

The circumcenter is the point of concurrency of the perpendicular bisectors of all the sides of a triangle.

Incenter:

The incenter is the point of concurrency of the angle bisectors of all the interior angles of the triangle.

Centroid:

The point where three medians of the triangle meet is known as the centroid.

Orthocenter:

The point where three altitudes of the triangle meet is known as the orthocenter.

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Answer:

The answer to the question provided is

\( \frac{1}{2} \)

Answer:

$22,263

Step-by-step explanation:

15% of $74,210 is $11,131.50 so $11,131.50 X 2= $22,263

so after 2 years the total amount of money along with interest will be a total of = $96,473

Answer:

22

Explanation:

The cell phone plan costs $39.99 per month plus $0.18 for each text message.

Let the number of text messages sent or receive = t

The cost, C in a month will be:

If you have at most $44 to spend, it means the cost can be less than or equal to $44.

We then solve the inequality for t.

Since text messages cannot be decimal, the maximum number of text messages that you can send or receive next month is 22.

The expression that correctly calculates the perimeter of the shape is given as follows:

P = 2(6s + πr).

In which:

The perimeter of a square of side length s is given as follows:

P = 4s.

Hence, for three squares, the perimeter is given as follows:

P = 3 x 4s

P = 12s.

The perimeter, which is the circumference of a semicircle of radius r, is given by the equation presented as follows:

C = πr.

Hence the perimeter of two semicircles is given as follows:

C = 2πr.

The perimeter of the entire shape is given by the sum of the perimeter of each shape, hence:

P = 12s + 2πr.

P = 2(6s + πr).

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Step-by-step explanation:

Volume of the cube = Side

Since,

All the sides of the cube are equal

Then if the length of a side of the cube is

increased

So, the side of the cube becomes

Side of the cube = 2 × Side

Assume

Side of the cube be ‘s’

Side of the cube = 2s

Now,

Volume of the cube = 2s × 2s × 2s

Volume of the cube = (2s)

Volume of the cube = 8s

To find how many times the volume of the cube is

increased

Monkeyman is one of the two protagonists in the short story "The Day They Burned the Books" written by Jean Rhys. This story is about the societal norms that exist in the Caribbean in the 1900s.

Monkeyman is a young boy from the West Indies who is fascinated by the books in the library but feels that he is too insignificant to touch them. Monkeyman's actions have consequences.The consequences of Monkeyman's actions are that The Tigros want to hurt him. The Tigros are two girls, who are friends of Peaches, the other protagonist in the story.

Monkeyman and Peaches have a close friendship, but because of Monkeyman's actions, The Tigros are angry with him. Monkeyman finds out that The Tigros are angry with him when he overhears them talking. He tries to apologize to them but they are not interested in listening to him.The situation becomes worse when The Tigros start looking for Monkeyman. They are angry and want to hurt him. Monkeyman has to hide from them in the library, and he is terrified. The situation is tense, and it is not clear what will happen. This is the consequence of Monkeyman's actions.

The story shows how the societal norms of the Caribbean in the 1900s affect the lives of the people who live there. Monkeyman's actions show that he is not willing to accept these norms, but he has to deal with the consequences of his actions.

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|-86| = 86 The Badwater Basin, which is 282 feet (86 metres) below sea level, is the lowest place in North America.

The absolute value is always positive. The elevation of the shoreline, or the ocean-land boundary, is referred to as sea level. Land above this altitude is above sea level, whereas land below it is below sea level. When we visit the shoreline, the small strip of land that separates the land from the water, we experience relative sea level. When we observe the shoreline, we can see that it fluctuates throughout the day. Tides and winds affect how the shoreline narrows and widens, but they do not determine the sea level. To eliminate these effects from the calculations, we use mean sea level (MSL). In a specific location, MSL represents the halfway point between mean high tide and mean low tide.

-86 has an absolute value of 86.

Advice: The absolute value is consistently positive.

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The block reaches the bottom of the incline with a speed of approximately 7.66 m/s.

The acceleration of the block is given by

a = g sin 30 = 9.8 m/s² × 0.5 = 4.9 m/s²

Where g is the acceleration due to gravity.

The distance travelled by the block is given by

d = 3 m

The initial velocity of the block, u = 0

Using the kinematic equation, v² = u² + 2as

The final velocity of the block,v is given by

v = sqrt(2 × 4.9 × 3) ≈ 7.66 m/s

Therefore, the block reaches the bottom of the incline with a speed of approximately 7.66 m/s.

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The 95% confidence interval for the difference of sample means is given by [0.3876, 3.0924], yes it lies in the interval and difference of the sample mean statistically significant not.

In statistics, the probability that a population parameter will fall between a set of values for a certain percentage of the time is referred to as a confidence interval. Confidence intervals that contain either 95% or 99% of expected observations are frequently utilized by analysts. As a result, it is possible to infer that the true value falls within a 95% confidence interval of 9.50 to 10.50 when a point estimate of 10.00 is generated from a statistical model.

To comprehend the statistical significance of their estimates, inferences, or predictions, statisticians and other analysts employ confidence intervals. One cannot satisfactorily assert that a result from data generated through testing or experimentation is to be attributable to a specific cause rather than chance if a confidence interval contains the value zero (or some other null hypothesis).

A) (x₁ - x₂) = 1.74

SE (x₁ - x₂) = 0.69

z-value at 95 = 1.96

Confidence interval = u + ME

= (x₁ - x₂) + z x SE (x₁ - x₂)

= 1.74 ± 1.96 x 0.69

= [0.3876, 3.0924]

B) From A yes we can say that the sample mean lies within in the given interval.

C) The interval does not contain zero, so we conclude that the result is statistically significant.

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Complete question:

Determining Whether a Difference Is Statistically Significant You calculated the standard deviation of the sample mean differences to be 0.69. You also calculated the sample mean difference to be 1.74. Now you'll determine whether the difference is significant. For the purpose of constructing the confidence interval, assume that there's no difference between the population means. Part A What is the 95% confidence interval for the difference of sample means? Part B Is the sample mean difference within the confidence interval you computed in part A of this task? Part C Is the difference of the sample means statistically significant? Part D What can you conclude about the color of the L-Bow-Roni box?

Answer:

$7.20

Step-by-step explanation:

The linear equation is y= 0.07x + 5.1.

A line's slope is determined by how its y coordinate changes in relation to how its x coordinate changes. y and x are the net changes in the y and x coordinates, respectively. Therefore, it is possible to write the change in y coordinate with respect to the change in x coordinate as,

m = Δy/Δx

where, m is the slope

Given:

For 15 minutes, costs= $4.05

For 40 minutes, costs= $5.80

slope of the linear equation

slope= \((y_2- y_1)/ (x_2- x_1)\)

slope= (5.80- 4.05)/(40-15)

slope= 1.75/25

slope= 175/ 25 x 100

slope= 7/100

slope= 0.07

and, the linear equation

y- 4.05= 0.07(x- 15)

y- 4.05= 0.07x - 1.05

y= 0.07x + 5.1

Hence, the linear equation is y= 0.07x + 5.1.

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the percentage of information remembered at the moment it is first learned is 100%.

In mathematics, a function from a set X to a set Y assigns to each element of X exactly one element of Y. The set X is called the domain of the function and the set Y is called the codomain of the function.

Functions were originally the idealization of how a varying quantity depends on another quantity. For example, the position of a planet is a function of time. Historically, the concept was elaborated with the infinitesimal calculus at the end of the 17th century, and, until the 19th century, the functions that were considered were differentiable (that is, they had a high degree of regularity). The concept of a function was formalized at the end of the 19th century in terms of set theory, and this greatly enlarged the domains of application of the concept.

Your question is incomplete but most probably your full question was:

In college, we study large volumes of information - information that, unfortunately, we do not often retain for very long. The function f(x) = 80e-0.5x + 20

describes the percentage of Q. information, p, that a particular person remembers x weeks after learning the information. Substitute 0 for x and find the percentage of information remembered at the moment it is first learned.

a 100%

b 95%

c 90%

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The solutions to the equations are

1. x = 4

2. x = -12

3. x = 0 and x = 4

The solutions to the inequalities are

4. -5 < x < 1

5. x ≤ -3 and x ≥ 4

From the question, we have the following equations

1. 4x + 6 = 8x - 10

2. -3/4x - 2 = -1/2x + 1

3. |4 - 2x| + 5 = 9

Next, we split the equations to 2

So, we have

1. y = 4x + 6 and y = 8x - 10

2. y = -3/4x - 2 and y = -1/2x + 1

3. y = |4 - 2x| + 5 and y = 9

Next, we plot the system of equations (see attachment) and write out the solutions

The solutions are

1. x = 4

2. x = -12

3. x = 0 and x = 4

From the question, we have the following inequalities

4. x² + 4x - 5 < 0

5. x² - x - 12 ≥ 0

Next, we plot the system of inequalities (see attachment) and write out the solutions

The solutions are

4. -5 < x < 1

5. x ≤ -3 and x ≥ 4

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Answer:

Your answer is $24

Step-by-step explanation:

5*4 is 20, so all that you have to do it 6*4

The best measure of center for this data is the median, and its value is 3.

Option B is the correct answer.

We have,

From the line plot,

The median is the best measure of center for this type of data, as it is not affected by outliers.

To find the median, we need to arrange the data in order from least to greatest:

1, 1, 2, 2, 2, 3, 3, 3, 3, 4, 4, 5, 5, 5, 10

Since there are 15 data points,

The median is the middle value, which is 3.

Therefore,

The best measure of center for this data is the median, and its value is 3.

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The total number of possible four-digit PINs that cannot begin or end with a 0 and must be an even number is 10,000 - 900 - 4,500 = 4,500. Thus, the correct answer is c. 4,500.

To determine this:

There are 10 options for the first digit (1-9) and 10 options for the last digit (2, 4, 6, 8). For the middle two digits, there are 10 options for each digit (1-9). Therefore, the total number of possible four-digit PINs is 10 x 10 x 10 x 10 = 10,000.

However, we must subtract the number of PINs that begin or end with a 0, which is 9 x 10 x 10 x 1 = 900. We must also subtract the number of PINs that are odd numbers, which is 9 x 10 x 10 x 5 = 4,500.

Therefore, the total number of possible four-digit PINs that cannot begin or end with a 0 and must be an even number is 10,000 - 900 - 4,500 = 4,500. Thus, the correct answer is c. 4,500.

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Answer:B.Sample space

Step-by-step explanation:

According to the question For ( a ) the amount and concentration of salt at any time \(\(t\)\) can be \(\[S(t) = 10 + 11 - 44 \times C(t) \text{ kg}\]\)\(\[C(t) = \frac{S(t)}{100}\text{ kg/L}\]\) . For ( b ) the limiting concentration of salt in the tank is 0.25 kg/L.

To determine the amount and concentration of salt at any time in the tank, we need to consider the inflow of saltwater, outflow of water, and evaporation. Let's denote the time as \(\(t\)\) in hours.

a. Amount and Concentration of Salt at any time:

Let's denote the amount of salt in the tank at time \(\(t\) as \(S(t)\)\) in kg and the concentration of salt in the tank at time \(\(t\) as \(C(t)\) in kg/L.\)

Initially, the tank contains 100 L of water with a salt concentration of 0.1 kg/L. Therefore, at \(\(t = 0\)\), we have:

\(\[S(0) = 100 \times 0.1 = 10 \text{ kg}\]\)

\(\[C(0) = 0.1 \text{ kg/L}\]\)

Considering the inflow, outflow, and evaporation rates, the amount of salt in the tank at any time \(\(t\)\) can be calculated as:

\(\[S(t) = S(0) + \text{Inflow} - \text{Outflow} - \text{Evaporation}\]\)

The inflow rate of saltwater is 55 L/h with a concentration of 0.2 kg/L. Thus, the amount of salt entering the tank per hour is:

\(\[\text{Inflow} = \text{Inflow rate} \times \text{Concentration} = 55 \times 0.2 = 11 \text{ kg/h}\]\)

The outflow rate is 44 L/h, so the amount of salt leaving the tank per hour is:

\(\[\text{Outflow} = \text{Outflow rate} \times C(t) = 44 \times C(t) \text{ kg/h}\]\)

The evaporation rate is 11 L/h, and as only water evaporates, it does not affect the salt concentration in the tank.

Therefore, the amount and concentration of salt at any time \(\(t\)\) can be expressed as follows:

\(\[S(t) = 10 + 11 - 44 \times C(t) \text{ kg}\]\)

\(\[C(t) = \frac{S(t)}{100}\text{ kg/L}\]\)

b. Limiting Concentration:

The limiting concentration refers to the concentration reached when the inflow and outflow rates balance each other, resulting in a stable concentration. In this case, the inflow rate of saltwater is 55 L/h with a concentration of 0.2 kg/L, and the outflow rate is 44 L/h. To find the limiting concentration, we equate the inflow and outflow rates:

\(\[\text{Inflow rate} \times \text{Concentration} = \text{Outflow rate} \times C_{\text{limiting}}\]\)

\(\[55 \times 0.2 = 44 \times C_{\text{limiting}}\]\)

\(\[C_{\text{limiting}} = \frac{55 \times 0.2}{44} = 0.25 \text{ kg/L}\]\)

Therefore, the limiting concentration of salt in the tank is 0.25 kg/L.

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The probability that they have an average weight of greater than 10 pounds and less than 15 pounds is 0.84134

In this question we have been given there are 250 dogs at a dog show who weigh an average of 15 pounds, with a standard deviation of 6 pounds. of 10 dogs are chosen at random.

We need to find the probability that they have an average weight of greater than 10 pounds and less than 15 pounds.

Given, μ = 12, σ = 8, n = 4

P(X > 8)

= P(z > (8 - 12 / 8/√4))

= P(z > -1)

= 1 - P(z ≤ -1)

= 1 - [1 - P(z ≤ 1)]

=  P(z ≤ 1)

= 0.84134

Therefore, the required probability is 0.84134

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Answer:

100/20=5. this is the answer of ur questions

I am assuming the "14" is the exercise number and not a number in the list.

To find the mean, you add up all the values and divide by the number of values you added:

    ( -32 + -41 + -39 + -27 + -33 + -44 ) / 6 = -216/6 = -36

The mean is -36

Answer:

Step-by-step explanation:

(-32+-41+-39+-27+-33+-44)/6

= -36

The distribution for X is a negative binomial distribution, denoted as nb(x;6, 188​), with parameters r = 6 (number of successes), p = 8/18 (probability of success in each trial).

To compute the probabilities:

P(X = 2): nb(2;6, 8/18)

P(X ≤ 2): nb(0;6, 8/18) + nb(1;6, 8/18) + nb(2;6, 8/18)

P(X ≥ 2): 1 - P(X < 2) = 1 - P(X ≤ 1)

To calculate the mean value and standard deviation of X:

Mean (μ) = r * (1 - p) / p

Standard Deviation (σ) = sqrt(r * (1 - p) / (p^2))

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Answer:

2nd, third and fifth options are the correct answers.

Step-by-step explanation:

Hope it helps you in your learning process.

For a standard normal random variable, what z-score has a) Probability 0.200 to the right z = 0.841. (3 decimal places) b) probability 0.900 to the left z = 1.282. (3 decimal places)

We are looking for the z-score that has a probability of 0.200 to the right. Since the normal distribution is symmetric, we can use a standard normal table to find the z-score that has a probability of 0.800 to the left, which is 0.800 = P(Z ≤ z). From the table, we find that the z-score for a probability of 0.800 to the left is approximately 0.84. Therefore, the z-score for a probability of 0.200 to the right is simply the negative of 0.84, which is -0.84.

We are looking for the z-score that has a probability of 0.900 to the left. Using a standard normal table, we find that the z-score for a probability of 0.900 to the left is approximately 1.28. Therefore, the z-score for a probability of 0.900 to the right is simply the negative of 1.28, which is -1.28.

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