What score must a learner earn on the ACT composite test in order for the score to be at the 87.49th percentile? Round up to the nearest whole number.

Many students take standardized tests for college applications. They are called standardized tests because they are scored so the population of student scores for any one particular test follows a normal distribution. The most common test are the SAT and the ACT.

Suppose the mean and standard deviation for the ACT composite score, the SAT critical reading score, and the SAT mathematics score for the year 2017 are as follows:

For the ACT, the mean composite score was 21.0 with a standard deviation of 5.2.
For the SAT critical reading score, the mean was 501 with a standard deviation of 112.
For the SAT mathematics score, the mean was 516 with a standard deviation of 116
a. 32
b. 43
c. 27
d. 19

What Score Must A Learner Earn On The ACT Composite Test In Order For The Score To Be At The 87.49th
What Score Must A Learner Earn On The ACT Composite Test In Order For The Score To Be At The 87.49th

Answers

Answer 1
To find the score that corresponds to the 87.49th percentile on the ACT composite test, we can use the mean and standard deviation provided. Here's how we can calculate it:

1. Calculate the z-score corresponding to the desired percentile using the formula:
z = (x - mean) / standard deviation

2. Rearrange the formula to solve for x:
x = z * standard deviation + mean

3. Substitute the values into the formula:
z = invNorm(0.8749) (using a standard normal distribution table or calculator)
mean = 21.0
standard deviation = 5.2

4. Calculate the score:
x = z * standard deviation + mean

Using these steps, we can calculate the score:

z = invNorm(0.8749) ≈ 1.175

x = 1.175 * 5.2 + 21.0 ≈ 27.39

Rounding up to the nearest whole number, the score that a learner must earn on the ACT composite test to be at the 87.49th percentile is 28.

Therefore, the closest answer is C. 27.
Answer 2

Answer:

  27

Step-by-step explanation:

You want to know the ACT composite test score for the 87.49th percentile, given the ACT scores have a mean of 21.0 and a standard deviation of 5.2.

Z-score

The Z-table in the first attachment shows you the Z-value of the 87.49th percentile is 1.10+0.05 = 1.15.

Score

The corresponding score is ...

  X = μ +σZ

  X = 21.0 +5.2·1.15 ≈ 27

A learner must earn a score of 27 to be at the 87.49th percentile on the ACT composite test.

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What Score Must A Learner Earn On The ACT Composite Test In Order For The Score To Be At The 87.49th
What Score Must A Learner Earn On The ACT Composite Test In Order For The Score To Be At The 87.49th

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Terrence is recording what kind of shoes people are wearing at the mall. Out of the 20 people he has seen, 2 are wearing sneakers. What is the experimental probability that the next person Terrence sees will be wearing sneakers?

Answers

Terrence saw, and out of those, only two people were wearing sneakers. Therefore, the probability of the next person Terrence sees wearing sneakers is 2/20 or 0.1 or 10%.

The experimental probability of an event happening is the ratio of the number of times the event occurs to the number of trials, i.e., the number of opportunities for the event to happen.Here, Terrence recorded what kind of shoes people are wearing at the mall.

He found out that 2 out of the 20 people he has seen are wearing sneakers. We can determine the experimental probability of the next person Terrence sees wearing sneakers with this information.The experimental probability that the next person Terrence sees will be wearing sneakers can be calculated as follows:Probability of seeing the next person wearing sneakers = Number of people wearing sneakers / Total number of people seen= 2/20

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Kiran poured 15 cups of water into equal-sized pitchers and filled 1 1\2 pitchers. How much water was in the full pitcher? Multiplication equation: Division equation:

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Step-by-step explanation:

15 cups of water fill 1 1/2 pitchers. that is 3/2 pitchers.

in one pitcher we have then 1 / 3/2 the amount of water of the 3/2 pitchers.

that means

15 × 1 / 3/2 = 15/1 × 1/1 / 3/2 = 15/1 × 2/3 = 30/3 = 10

so, in one pitcher are 10 cups of water.

Select a value to tell how each pair of angles is related.

Answers

The value to determine the relationship between each pair of angles is their sum. we can determine whether they are complementary (90 degrees), supplementary (180 degrees), or explementary (360 degrees), which helps us understand their relationship and properties.

To determine the relationship between two angles, we can consider their sum. If the sum of two angles is equal to 90 degrees, they are complementary angles. Complementary angles are pairs of angles that, when added together, result in a right angle. For example, if Angle A measures 40 degrees and Angle B measures 50 degrees, their sum is 90 degrees, so they are complementary angles.

If the sum of two angles is equal to 180 degrees, they are supplementary angles. Supplementary angles are pairs of angles that, when added together, result in a straight angle. For instance, if Angle C measures 120 degrees and Angle D measures 60 degrees, their sum is 180 degrees, so they are supplementary angles.

On the other hand, if the sum of two angles is equal to 360 degrees, they are explementary angles. Explementary angles are pairs of angles that, when added together, result in a complete revolution or a full circle. For example, if Angle E measures 120 degrees and Angle F measures 240 degrees, their sum is 360 degrees, so they are explementary angles.

By considering the sum of the angles, we can determine whether they are complementary (90 degrees), supplementary (180 degrees), or explementary (360 degrees), which helps us understand their relationship and properties.

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The area of the Pacific Ocean is 165 million km2. If we imagine an area of 11 million km2, what is the ratio of this area to the area of the Pacific Ocean? Enter your answer as a fraction.

Answers

To find the ratio of the area of 11 million km² to the area of the Pacific Ocean (165 million km²), we can express it as a fraction:

Ratio = Area of 11 million km² / Area of the Pacific Ocean

Ratio = 11 million km² / 165 million km²

To simplify the fraction, we can divide both the numerator and the denominator by 11 million:

Ratio = (11 million km² / 11 million km²) / (165 million km² / 11 million km²)

Ratio = 1/15

Therefore, the ratio of the area of 11 million km² to the area of the Pacific Ocean is 1/15.

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Santos takes the train into the city five days a week for work. For one work week he kept track of how many minutes the train ride was : 48,51,48,48,50


Calculate the mean median range in the range of the train ride times for the week

Answers

The mean train ride time for the week was 49.4 minutes, with a median of 48 minutes. The range of the train ride times was 3 minutes.

The mean, median, and range of Santos' train ride times for the week were as follows:

Mean: 49.4 minutes

The mean is calculated by adding up all the values and dividing the sum by the total number of values. In this case, the sum of the train ride times (48 + 51 + 48 + 48 + 50) is 245 minutes. Dividing this sum by the total number of days (5), we get the mean of 49.4 minutes.

Median: 48 minutes

The median is the middle value in a sorted list of numbers. To find the median, we arrange the train ride times in ascending order: 48, 48, 48, 50, 51. Since there is an odd number of values, the middle value is the median. In this case, the median is 48 minutes.

Range: 3 minutes

The range is the difference between the largest and smallest values in a set. To calculate the range, we subtract the smallest value (48 minutes) from the largest value (51 minutes). In this case, the range of the train ride times for the week is 3 minutes.

In summary, the mean train ride time for the week was 49.4 minutes, with a median of 48 minutes. The range of the train ride times was 3 minutes. These metrics provide insights into the average, central tendency, and variability of Santos' train rides throughout the week.

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Leo made a 69, 84, 67, and an 81 on the first four tests. What score would he have to make on the 5th test in order to make at least a B in the course? Based on your answer, is it likely that Leo will make a B? Why or why not?​

Answers

Leo would need to score at least 99 on the 5th test to achieve at least a B in the course. The likelihood of Leo making a B would depend on his individual abilities, preparation, and performance on the 5th test.

To determine what score Leo would need on the 5th test to achieve at least a B in the course, we first need to know the grading scale or criteria for the course. Different educational institutions and instructors may use different grading scales, so without that information, it is not possible to provide an exact answer.

However, assuming a common grading scale where:

A: 90-100

B: 80-89

C: 70-79

D: 60-69

F: Below 60

We can calculate the average score Leo needs to achieve a B. To find the average, we sum up the scores and divide by the total number of tests:

(69 + 84 + 67 + 81 + x) / 5 >= 80

Simplifying the equation:

301 + x >= 400

x >= 400 - 301

x >= 99

Therefore, Leo would need to score at least 99 on the 5th test to achieve at least a B in the course.

As for whether it is likely that Leo will make a B, it depends on various factors. If Leo has consistently performed well in the course and has a history of earning high scores on tests, it is possible that he can achieve a score of 99 or higher on the 5th test. However, if Leo has struggled in the course or has not performed well on previous tests, it may be challenging for him to score high enough on the 5th test to reach a B. The likelihood of Leo making a B would depend on his individual abilities, preparation, and performance on the 5th test.

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_ questions can only be answered in your head
A- random
B- on-the-page
C-out-of-left-field
D- From-my-brain

Answers

Random questions can be solved in your head. option A

What is random questions?

In common usage, randomness is the apparent or actual lack of pattern or predictability in information.

 A random sequence of events, symbols or steps often has no order and does not follow an intelligible pattern or combination. Individual random events are, by definition, unpredictable, but if the probability distribution is known, the frequency of different outcomes over repeated events (or "trials") is predictable

A random question has no particular pattern therefore it can be asked any how.

Therefore, we can conclude that random questions can only be answered in your heard with any research.

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Time


(seconds)


Height


(feet)


12


1


2


24


36


4


48


a. Determine the average rate of change for the problem situation. Be sure to include units


of measure

Answers

The average rate of change for the given problem situation is 2 feet per second.

To find the average rate of change between any two points, we divide the change in the output variable by the change in the input variable. The output variable is height in feet and the input variable is time in seconds. The average rate of change between the first and second points is:Change in height: 2 - 1 = 1 foot
Change in time: 12 - 2 = 10 seconds
Average rate of change: 1/10 = 0.1 feet per second
The average rate of change between the second and third points is:Change in height: 4 - 2 = 2 feet
Change in time: 24 - 12 = 12 seconds
Average rate of change: 2/12 = 0.1667 feet per second
The average rate of change between the third and fourth points is:Change in height: 36 - 4 = 32 feet
Change in time: 48 - 24 = 24 seconds
Average rate of change: 32/24 = 1.3333 feet per second
The average rate of change between the first and fourth points is:Change in height: 48 - 1 = 47 feet
Change in time: 48 - 12 = 36 seconds
Average rate of change: 47/36 = 1.3056 feet per second

Thus, we can see that the average rate of change for the problem situation is 2 feet per second.

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Kayla bikes for 2. 25 hours at an average rate of 10. 5mph. Tasha bikes the


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To find out how long it takes Tasha to complete the ride, we can use the formula:

Time = Distance / Rate

Let's start by calculating the distance traveled by Kayla. We know that Kayla bikes for 2.25 hours at an average rate of 10.5 mph. So the distance traveled by Kayla can be calculated as:

Distance = Time * Rate = 2.25 hours * 10.5 mph = 23.625 miles

Now, we can calculate the time it takes for Tasha to complete the same distance. Tasha bikes at an average rate of 12.4 mph. Using the formula mentioned above:

Time = Distance / Rate = 23.625 miles / 12.4 mph ≈ 1.906 hours

Rounding to the nearest hundredth, it takes Tasha approximately 1.91 hours (or 1 hour and 54.6 minutes) to complete the ride.

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Write a simplified equivalent expression for the SUM. (5x – 2) + (2x + 9)

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The simplified equivalent expression for the sum (5x – 2) + (2x + 9) is 7x + 7.

This can be obtained by combining like terms, which involves adding the coefficients of x and the constant terms separately.

In the given expression, we have (5x – 2) and (2x + 9). To simplify, we can add the coefficients of x together: 5x + 2x = 7x. Similarly, we can add the constant terms: -2 + 9 = 7. Therefore, the simplified expression becomes 7x + 7, where 7x represents the combined coefficient of x and 7 represents the combined constant term.

Overall, by combining like terms, we obtain the simplified equivalent expression of the sum (5x – 2) + (2x + 9) as 7x + 7.


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On a map, the scale is 2 inches = 7 miles. What is the actual distance between the two cities if the map distance is 3 inches?
Please help

Answers

The actual distance between the two cities is 10.5 miles

How to calculate the actual distance between the two cities

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

Scale: 2 inches = 7 miles

Given that

Map distance = 3 inches

using the above as a guide, we have the following:

1.5 * 2 inches = 7 miles * 1.5

Evaluate the products

3 inches = 10.5 miles

Hence, the actual distance between the two cities is 10.5 miles

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The area of a rectangle is 400 square inches and its length is 4 times its width how many inches wide is the rectangle

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The width of the rectangle is 10 inches, as it is calculated by finding the square root of the ratio of the area to the length.

Let's denote the width of the rectangle as "w" inches. According to the given information, the length of the rectangle is 4 times its width, so the length can be expressed as "4w" inches.

The formula for the area of a rectangle is length multiplied by width. In this case, the area is 400 square inches, so we have the equation:

Area = Length × Width

400 = (4w) × w

400 = 4w^2

To find the width, we can rearrange the equation and solve for "w":

4w^2 = 400

w^2 = 100

w = √100

w = 10

Therefore, the width of the rectangle is 10 inches. This means that the length of the rectangle is 4 times the width, which is 40 inches.

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Underline the prepositional phrases


i) I was proven innocent by virtue of the law.


ii) Don’t leave without your coat

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i) I was proven innocent by virtue of the law.

ii) Don’t leave without your coat.

In sentence (i), the prepositional phrase "by virtue of" introduces the reason or cause for being proven innocent. It indicates that the law is the basis or foundation for the proof.

In sentence (ii), the prepositional phrase "without your coat" indicates the absence or lack of something. It specifies that the action of leaving should not occur unless the person has their coat with them.

Prepositional phrases consist of a preposition (such as "by," "of," or "without") followed by a noun or pronoun object. They provide additional information about location, time, manner, or other relationships in a sentence. Recognizing and understanding prepositional phrases helps in comprehending the structure and meaning of sentences.

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Profit, P(-2), is the difference between revenue, R(x), and cost, C(x), so P(x) = R(x) - C(x). Which


expression represents P(x), if R(x) = 2x4 -- 30% + 22-1 and C(x) = 24 x² + 2x + 3?




help

Answers

The expression for the profit function P(x) is P(x) = 2x^4 - 24x^2 - 2x - 1.3.

To find the expression for the profit function P(x) when given the revenue function R(x) and cost function C(x), we can substitute the given functions into the equation P(x) = R(x) - C(x).

Given:

R(x) = 2x^4 - 30% + 2^(2-1)

C(x) = 24x^2 + 2x + 3

We substitute the functions into the expression for P(x):

P(x) = R(x) - C(x)

= (2x^4 - 30% + 2^(2-1)) - (24x^2 + 2x + 3)

Simplifying the expression:

P(x) = 2x^4 - 0.3 + 2 - 24x^2 - 2x - 3

= 2x^4 - 24x^2 - 2x - 0.3 - 3 + 2

= 2x^4 - 24x^2 - 2x - 1.3

Therefore, the expression for the profit function P(x) is P(x) = 2x^4 - 24x^2 - 2x - 1.3.

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How much wire will be needed to put a double fence around a square plot with 50m?

Answers

To find out how much wire will be needed to put a double fence around a square plot with 50m, we first need to calculate the perimeter of the square plot.

Perimeter of a square = 4 x SideWhere Side = 50mPerimeter = 4 x 50m = 200mNow, since we need to put a double fence around the square plot, we will multiply the perimeter by 2. Therefore, the total length of wire needed for double fencing = 200m x 2 = 400m. Therefore, 400m of wire will be needed to put a double fence around a square plot with 50m.Long Answer:The given plot is a square with the side of the square being 50m. To find out the amount of wire needed to put a double fence around the square plot, we first need to calculate the perimeter of the square plot.A square is a 4 sided figure with all sides of equal length.

Therefore, the perimeter of a square can be calculated by multiplying the length of one side of the square with 4, as shown below.Perimeter of a square = 4 x SideWhere Side is the length of one side of the square plot.In this case, the side of the square plot is given as 50m. Therefore, the perimeter of the square plot can be calculated as shown below:Perimeter of a square = 4 x 50m = 200mTherefore, the perimeter of the square plot is 200m.Now, since we need to put a double fence around the square plot, we will multiply the perimeter by 2. This is because a double fence means that we will be putting two fences back to back around the perimeter of the square plot. Therefore, the total length of wire needed for double fencing can be calculated as shown below:Total length of wire needed for double fencing = 2 x Perimeter of the square plotTotal length of wire needed for double fencing = 2 x 200mTotal length of wire needed for double fencing = 400mTherefore, 400m of wire will be needed to put a double fence around a square plot with 50m.

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If f(x)=x-1/3 and g(x)=3x+1 what is (f times g)(x)?

3x+1

x-3

3x

x

Answers

The expression (f times g)(x) represents the product of the functions f(x) and g(x). In this case, f(x) = x - 1/3 and g(x) = 3x + 1. To find the product, we substitute g(x) into f(x) and simplify the expression.

When we substitute g(x) into f(x), we get:

(f times g)(x) = f(g(x)) = f(3x + 1)

Now, substituting the expression for f(x) into f(g(x)), we have:

f(g(x)) = (3x + 1) - 1/3

Simplifying further, we combine like terms:

= 3x + 1 - 1/3

Thus, the product of f(x) and g(x), (f times g)(x), simplifies to:

(f times g)(x) = 3x + 1 - 1/3

(f times g)(x) equals 3x + 1 - 1/3.

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We often read that iq scores for large population are centered at 100.What percent of these 78 students have scores above 100?

Answers

It is not possible to determine the percentage of students with scores above 100 without additional information, such as the mean and standard deviation of the IQ scores of the population.

To determine the percentage of students with scores above 100, we need to know the mean and standard deviation of the IQ scores of the population. IQ scores are standardized such that the average score is set to 100, with a standard deviation of 15. However, without information about the distribution of the scores, it is not possible to provide an accurate percentage.

Assuming the distribution of IQ scores follows a normal distribution, we can use a table or a statistical calculator to estimate the percentage. For example, if we know the mean and standard deviation of the IQ scores, we can calculate the z-score for an IQ score of 100. The z-score measures the number of standard deviations a particular score is away from the mean.

Once we have the z-score, we can consult a standard normal distribution table or use a statistical calculator to find the corresponding percentage of scores above the given z-score. This percentage represents the proportion of students with IQ scores above 100.

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Complete Question :  we often read that iq scores for large populations are centered at 100. what percent of these 78 students have scores above 100? (round your answer to one decimal place.)

In 1990, Jerry´s gross pay was $78,000.

A. What was his gross monthly pay?

B. In What month did Jerry hit the maximum taxable Social Security Income?

C. How much Social Security tax did Jerry pay in January of 1990?

D. How much Social Security tax did Jerry pay in December of 1990?


Show Work

Answers

A. Jerry paid $403 in Social Security tax both in January and December.

What was Jerry's gross monthly pay? To calculate Jerry's gross monthly pay, you will need to divide his gross pay of $78,000 by the number of months in a year, which is 12.Gross Monthly Pay= Gross Pay/12= $78,000/12= $6,500B. In what month did Jerry hit the maximum taxable Social Security Income?

The maximum taxable Social Security income is $51,300. This implies that Social Security tax is applied only on the first $51,300 of Jerry's income. Jerry's gross pay was $78,000; thus, the maximum taxable Social Security Income for Jerry is $51,300.

Social Security tax is calculated on gross pay, not net income. Jerry will hit the maximum taxable Social Security Income as soon as he earns $51,300 for the year.

The social security tax will no longer be deducted from his paychecks for the remainder of the year. This will occur at the point when Jerry's gross pay equals the maximum taxable Social Security income.

This occurs in August. Gross monthly pay is $6,500. Thus, by August, Jerry will have earned $51,300 (8*$6,500).C. How much Social Security tax did Jerry pay in January of 1990?

Social Security tax rate for 1990 was 6.2 percent of gross pay. This implies that Jerry paid 6.2 percent of his gross pay as Social Security tax. Social Security Tax paid in January= Gross Monthly Pay * Social Security Tax Rate= $6,500 * 6.2%= $403D. How much Social Security tax did Jerry pay in December of 1990?

Social Security tax rate for 1990 was 6.2 percent of gross pay.

This implies that Jerry paid 6.2 percent of his gross pay as Social Security tax. Social Security Tax paid in December= Gross Monthly Pay * Social Security Tax Rate= $6,500 * 6.2%= $403

Hence, Jerry paid $403 in Social Security tax both in January and December.

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The cost c of supplies for school depends on other factors lost at least 2 independent variables that could effect the cost of school supplies

Answers

Here are two independent variables that could affect the cost of school supplies:1. Inflation Rate: The inflation rate is a measure of the overall increase in prices over time.

It can impact the cost of various goods and services, including school supplies. If the inflation rate is high, the prices of school supplies may increase, leading to higher costs for purchasing these items.

2. Demand for School Supplies: The demand for school supplies can also influence their cost. Probability of Higher demand typically leads to increased prices, as suppliers may adjust their prices to match the demand. Factors such as back-to-school seasons, educational policies, and population growth can affect the demand for school supplies.

By considering the inflation rate and the demand for school supplies as independent variables, we can better understand how these factors can impact the cost of school supplies.

However, it's important to note that there could be other variables that can also affect the cost, such as production costs, supply chain disruptions, and changes in government policies related to education or trade.

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The cost c of supplies for school depends on other factors lost at least 2 independent variables that could effect the cost of school supplies?

Select at least two digital communication strategies you can control to protect yourself. Explain why you chose them and how they can safeguard you if you feel like someone is trying to cause you harm.

Answers

Two digital communication strategies you can control to protect yourself are:

1. **Strong Passwords**: One of the most effective ways to safeguard your digital communication is by using strong, unique passwords for your online accounts. A strong password should be a combination of upper and lowercase letters, numbers, and special characters. By using strong passwords and regularly updating them, you can prevent unauthorized access to your accounts. This can safeguard you if someone is trying to cause harm by attempting to gain unauthorized access to your personal information or accounts.

2. **Two-Factor Authentication (2FA)**: Enabling two-factor authentication adds an extra layer of security to your digital communication. With 2FA, you need to provide a second form of verification, such as a unique code sent to your mobile device, in addition to your password, to access your accounts. This can protect you if someone manages to obtain your password, as they would still need the second factor to gain access. 2FA makes it significantly harder for malicious individuals to compromise your accounts, providing an added safeguard against potential harm.

By implementing strong passwords and enabling two-factor authentication, you enhance the security of your digital communication and reduce the risk of unauthorized access and potential harm. These strategies provide an additional barrier against malicious activities and help ensure the confidentiality and integrity of your personal information and online accounts.

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Researchers measured the data speeds for a particular smartphone carrier at 50 airports. The highest speed measured was 76. 9 Mbps. The complete list of 50 data speeds has a mean of x overbar equals17. 21 Mbps and a standard deviation of sequals 32. 78 Mbps. A. What is the difference between​ carrier's highest data speed and the mean of all 50 data​ speeds? b. How many standard deviations is that​ [the difference found in part​ (a)]? c. Convert the​ carrier's highest data speed to a z score. D. If we consider data speeds that convert to z scores between minus 2 and 2 to be neither significantly low nor significantly​ high, is the​ carrier's highest data speed​ significant?

Answers

a) The difference between the carrier's highest data speed (76.9 Mbps) and the mean of all 50 data speeds (17.21 Mbps) is 59.69 Mbps.

b) To determine how many standard deviations the difference found in part (a) represents, we can use the formula: z = (x - μ) / σ, where z is the number of standard deviations, x is the data point, μ is the mean, and σ is the standard deviation. In this case, the difference of 59.69 Mbps can be divided by the standard deviation of 32.78 Mbps to find the number of standard deviations.

c) To convert the carrier's highest data speed (76.9 Mbps) to a z score, we use the formula: z = (x - μ) / σ. By substituting the values into the formula, we can calculate the z score.

d) If we consider data speeds that convert to z scores between -2 and 2 to be neither significantly low nor significantly high, we can compare the z score calculated in part (c) with this range to determine if the carrier's highest data speed is significant. If the z score falls within the range of -2 to 2, it is not considered significantly low or significantly high.

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Plot these coordinates:(1,2),(1,7),(9,7),(9,3),(6,5). What is the area

Answers

To find the area of the region formed by the given coordinates, we can use the method of Shoelace Formula or Gauss's Area formula. The area of the polygon formed by the given coordinates is 25 square units

1. Plot the given coordinates: (1,2), (1,7), (9,7), (9,3), (6,5). These points represent the vertices of the polygon.

2. Connect the plotted points in order to form the polygon.

3. Use the Shoelace Formula or Gauss's Area formula to calculate the area of the polygon. The Shoelace Formula involves multiplying the differences of the x-coordinates with the corresponding y-coordinates and summing them up.

4. Apply the Shoelace Formula:

  Area = 1/2 * |(1*7 + 1*7 + 9*3 + 9*2 + 6*7) - (2*1 + 7*9 + 7*9 + 3*6 + 5*1)|

       = 1/2 * |(7 + 7 + 27 + 18 + 42) - (2 + 63 + 63 + 18 + 5)|

       = 1/2 * |101 - 151|

       = 1/2 * |-50|

       = 25

Therefore, the area of the polygon formed by the given coordinates is 25 square units.


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A bobsled team is practicing runs on a track. Their first run takes 4.85 minutes. On each of the next two run the team theme changes by -5 1/2% compared the previous time

Answers

The team's time on their final run, given the decrease in speed, would be 4. 33 minutes

How to find the minutes ?

On the next run, the time that the bobsled team would take is :

= 4. 85 - ( 4. 85 x 5. 5 % )

= 4. 85 - 0.26675

= 4. 58325 minutes

The run after that would see a time of :

= 4. 58325 - ( 4. 58325 x 5. 5 %)

= 4. 58325 - 0.25207875

= 4. 33 minutes

In conclusion, the  team's time on their final run, would be 4. 33 minutes.

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.

The question is:

What was the team's time on their final run?

A ship’s sonar detects a submarine 880 feet below a point on the ocean’s surface 1450 ft dead ahead of the ship. To the nearest degree, find the angle x. A right triangle. Angle x is opposite to side with length 880 feet. Another side is 1450 feet. The hypotenuse is not labeled. A. 59º b. 37º c. 31º d. 53º.

Answers

The measure of the angle x is 59 degrees. Option A

How to determine the values

The different trigonometric identities are listed as;

sinecosinetangentcotangentsecantcosecant

From the information given, we have that;

The measure of the adjacent is 880 feet

The opposite side is the ocean's surface = 1450 feet

The angle is x

Using the tangent identity, we have;

tan θ = opposite/adjacent

Now, we have to substitute the values, we get;

tan x = 1450/880

Divide the values, we get;

tan x = 1. 6477

Take the tangent inverse, we get;

x = 59 degrees

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Refurbished phone 35% off

Now only £78

How much was the phone before the discounted price?

Answers

The original price of the refurbished phone before the 35% discount was £120. If a refurbished phone is sold at a 35% discount with a final price of £78.

To find the original price of a refurbished phone before the discount of 35%, let's use the following formula:

discount = original price - discounted price

35% of the original price can be represented as 0.35 times the original price. This will result in the equation below:

0.35x = original price - 78

Where x is the original price. So, to find the value of x, we can rearrange the equation to get:

0.35x + 78 = original price

Now we substitute the given values into the equation above:

0.35x + 78 = original price

0.35x + 78 = x - 44.1 (if x represents the original price)

Let's subtract 0.35x from both sides to isolate the x variable:

78 = 0.65x

Then, let's divide both sides by 0.65 to solve for x (the original price):

x = £120

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What is the greatest common factor of 24s3, 12s4, and 18s?


3

6

3s

6s

Mark this and return

Answers

The greatest common factor (GCF) of the given expressions 24s^3, 12s^4, and 18s is 6s.

To find the GCF, we need to identify the highest power of each variable (s) that appears in all the expressions. In this case, the highest power of s that appears in all the expressions is s^3.Next, we consider the numerical coefficients. The GCF of the numerical coefficients 24, 12, and 18 is 6.

Finally, we combine the GCF of the numerical coefficients (6) with the highest power of the variable (s^3) to obtain the GCF of the entire expressions, which is 6s^3.Therefore, the greatest common factor of 24s^3, 12s^4, and 18s is 6s^3.

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Ms. Seema’s annual salary is Rs 288000. Her annual savings is Rs 72000. The ratio of her annual spending to her annual saving is ____________ *

1 : 3

2 : 3

3 : 1

None of these

Answers

We have to find the ratio of Ms Seema's annual spending to her annual savings given that Ms. Seema's annual salary is Rs 288000 and her annual savings is Rs 72000.

The first step is to determine the annual spending of Ms. Seema.Subtracting the annual savings of Ms. Seema from her annual salary, we can determine her annual spending. Annual spending = Rs 288000 - Rs 72000 = Rs 216000We now know that Ms. Seema's annual spending is Rs 216000 per year and her annual savings is Rs 72000 per year.

We can now compute the ratio of her annual spending to her annual savings. Annual spending : Annual savings= 216000 : 72000= 3 : 1Therefore, the ratio of Ms. Seema's annual spending to her annual savings is 3 : 1. It implies that her annual spending is three times the annual savings.In conclusion, the ratio of Ms. Seema's annual spending to her annual savings is 3 : 1.

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What method of factoring should first be used?

49x^{7}-25y^{2}

49x

7

−25y

2

Answers

To factor the expression, we should first apply difference of squares method. This method is suitable because expression can be written as the difference of two perfect squares, namely (7x^3)^2 - (5y)^2.

The expression 49x^7 - 25y^2 can be rewritten as (7x^3)^2 - (5y)^2, which represents the difference of two perfect squares. The difference of squares method states that for any two perfect squares, say a^2 - b^2, it can be factored as (a + b)(a - b).

In this case, a = 7x^3 and b = 5y. Applying the difference of squares formula, we can factor the expression as follows:

49x^7 - 25y^2 = (7x^3 + 5y)(7x^3 - 5y).

Thus, the first method of factoring to be used for the given expression is the difference of squares method.

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5. If two angles


are not adjacent, then they do not form


a linear pair.



Converse statement



inverses statement



Contrapositive statement



conditional statement

Answers

The given statement describes a relationship between two angles that are not adjacent, stating that they do not form a linear pair. The different types of logical statementsstatements from this statement are the converse statement, inverse statement, contrapositive statement, and conditional statement.

Converse statement: The converse of a conditional statement switches the hypothesis and the conclusion. In this case, the converse statement would be: If two angles do not form a linear pair, then they are not adjacent.
Inverse statement: The inverse of a conditional statement negates both the hypothesis and the conclusion. The inverse statement would be: If two angles are adjacent, then they form a linear pair.
Contrapositive statement: The contrapositive of a conditional statement switches and negates both the hypothesis and the conclusion. The contrapositive statement would be: If two angles form a linear pair, then they are adjacent.
Conditional statement: The original statement itself is the conditional statement. It follows the form: If two angles are not adjacent, then they do not form a linear pair.
These different logical statements provide alternative ways to express the relationship between angles that are not adjacent and their formation of a linear pair.

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Complete the division problem by determining the number that should be placed in the box.Division bracket with 13 on the left, 4498 inside, and 346 above it. Underneath the 4498, there is a minus 3900. Then there is a solid line with 598 under the line. There is a minus sign and an empty box followed by a solid line. Beneath the line, there is a 78 minus 78 underneath. There is a solid line and a 0 to end the problem.

Answers

The number that should be placed in the empty box is 13.

In the given division problem, we start by dividing 4498 by 346. The quotient obtained is written above the solid line as 13. Then, we subtract 13 times 346 (which is 4498) from 4498 itself and write the result, -3900, below the line. Next, we bring down the 598 and subtract 598 from -3900, resulting in -3498.

We continue the process, bringing down the minus sign and subtracting 78 from -3498, which gives us -3576. Finally, we bring down the 0 and subtract 0 from -3576, resulting in 0. Since there is no remainder, the division is complete. Therefore, the number that should be placed in the empty box is 13.

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