Alguien que me explique como se resuelve esta operación por pasos 4(2-x) <-x+5

Answer:

2 points the first 3 matches then 3 points the last 2 matches

Step-by-step explanation:

12 points in 5 matches and the first 3 are all the same then the other 2 increased by 1 point

They got 2 points the first 3 matches then 3 points the last 2 matches

2 + 2 + 2 (first 3 matches) = 6

3 + 3 (last 2 matches) = 6

6 + 6 = 12

The least that Qinna's arithmetic mean could be is 7.88.

The arithmetic mean, often known as the mean or average when the context is obvious, is the sum of a set of integers divided by the total number of the numbers in the set in mathematics and statistics.

We know that the mode is 7, which means that she must have scored 7 more than any other score. Therefore, the 15 days where she scored 10 cannot be the mode, and they must be some of the remaining 25 scores.

Let's consider the worst-case scenario for Qinna's scores on the other 25 days. We'll assume that she scored a 6 on all of those days. This means that her scores would look like:

15 days with a score of 10

10 days with a score of 7

10 days with a score of 6

5 days with an unknown score, which we'll call x

To find the least possible mean, we want to make x as small as possible. We know that the median is 9, so the 20th and 21st scores must be 9. We also know that there are 25 scores of 6 or higher, so the 25th score must be at least 6. Therefore, the sum of the first 24 scores plus x must be less than or equal to 25 times 6 (the sum of the lowest 25 possible scores).

24(10) + x ≤ 25(6)

240 + x ≤ 150

x ≤ -90

This means that the 5 remaining scores must add up to at most -90. Since the minimum score is 6, the maximum possible value of x is 4 times 6, or 24. Therefore, the least possible value of x is -90, which means that the 5 remaining scores must add up to 90.

To minimize the mean, we want to make these 5 scores as small as possible. If we make all 5 scores equal to 6, then the sum of all 40 scores would be:

15(10) + 10(7) + 10(6) + 5(6) = 315

The mean would be 315/40 = 7.875, which rounded to the nearest hundredth is 7.88.

Therefore, the least that Qinna's arithmetic mean could be is 7.88.

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The total number of possible 7-place license plates are 67600000.

Given: A 7-plate license plate. 2 places are for letters and 5 places are for numbers. To find how many different 7-plate license plates are possible

Let's solve the given problem:

The license plate has 7 places. 2 places are for letters and the remaining 5 places are for numbers.

Therefore, the total number of ways in which the 7-place license plate can fill are: Total possible ways in which the two letters can be filled × Total possible ways in which the 5 number places can be filled

= 676 × 100000

= 67600000 ways

Hence the total number of possible 7-place license plates are 67600000.

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The true statements about retrospective studies are:

These statements accurately describe the characteristics of retrospective studies. In a retrospective study, researchers examine existing data and information to investigate the relationship between exposure factors and outcomes. Subjects are categorized based on common factors, and outcomes are determined after the study has been conducted. Additionally, data collection takes place retrospectively, referring to information collected from a past time period.

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Answer:

Let heads represent a person who exercises the given amount, and let tails represent a person who doesn’t. Because there are three people, flip the coin three times (once for each person) and note the results of each set of three flips. If all three flips land on tails, it would mean that all three randomly selected people do not exercise as much as 50% of Americans do.

Step-by-step explanation:

Answer:

  1206.4 ft³

Step-by-step explanation:

The volume of the composite figure is the sum of the volumes of its parts. Each part has its own volume formula.

__

The formula for the volume of a cone is ...

  V = 1/3Bh . . . . where B is the area of the base, and h is the height

The formula for the volume of a cylinder is ...

  V = Bh . . . . where B is the area of the base, and h is the height

The formula for the area of a circle is ...

  A = πr² = π(d/2)² = (π/4)d²

Combining the volume formulas for a figure with the same base area, we have ...

  V = B(cylinder height) + 1/3B(cone height)

  V = B(cylinder height + 1/3×cone height) . . . . where B is the base area

Using 16 ft for the diameter, and 4 ft and 6 ft for the heights of the cylinder and cone, respectively, we have ...

  V = (π/4)(16 ft)²(4 ft + 1/3×6 ft) = 64π(4 +2) ft³ = 384π ft³

The volume is about ...

  384π ft³ ≈ 1206.4 ft³

Answer:

12/25

Step-by-step explanation:

Therefore, the value of the test statistic is 1.71.

The test statistic calculates the standard errors that separate the sample percentage from the predicted population proportion. The null hypothesis, which in this case is that the genuine proportion of readers who own the specific make of automobile is not greater than 58%, is stronger evidenced by a larger absolute value of the test statistic.

We must apply the following formula to determine the test statistic's value:

Z = (P - p) / (p*(1-p)/n), where P is the sample proportion, p is the hypothesised population proportion (0.58 in this case), n is the sample size (300), and sqrt stands for the square root.

By replacing the given values, we obtain the following result, which is rounded to two decimal places: z = (0.62 - 0.58), (0.58 * 0.42 / 300), z = 1.71.

The test statistic is positive, which indicates that the sample percentage of 62% exceeds the population proportion predicted by 58%. The difference between the sample proportion and the predicted population proportion is 1.71 standard errors distant from the mean, according to the value of 1.71. This indicates that the sample proportion is statistically significant at the 0.02 level, but in order to draw a firm conclusion, we must compare it to the critical value.

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True. Exception reports show a greater level of detail than is included in routine reports.

Exception reports are reports that help in identifying data that does not conform to expected patterns. Exception reports show information about an exception in the data set.

This helps to identify irregularities or anomalies in data or system operations.Exception reports are used to analyze system performance, monitor resource consumption, and to detect unusual activity.

This type of report is important to identify issues or errors, where the routine reports or standard reports would not provide enough detail or insight to do so.

It provides detailed information on any unusual event or anomaly that occurred beyond the usual course of events or processes.Exception reports are generated and distributed when the data is not expected or when an event occurs that is outside of what is considered typical.

For example, a financial system might generate an exception report if a transaction is entered that exceeds the maximum allowed amount. This report would show the details of the transaction and highlight the exception.

The purpose of exception reports is to provide users with a higher level of detail than they would find in routine reports. Exception reports are used to highlight significant data, which will be used for further analysis or action.

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Answer:

120 bpm

Step-by-step explanation:

after strenuous exercise your heart rate wouldn't decrease as your body needs more oxygenated blood causing your heart to pump harder and faster

Answer:

120 bpm just like the guy above

Step-by-step explanation:

I had the same question

Answer:

3

Step-by-step explanation:

you have 12 dollars left. divided by 4, is 3 hours

The probability that a person who purchased the game did not see the advertisement is:0.659.

what is  probability?

Probability is a measure of the likelihood of an event occurring. It is expressed as a number between 0 and 1, with 0 indicating that the event is impossible and 1 indicating that the event is certain. Probability is used in many areas, including statistics, mathematics, science, finance, and gambling.

In the given question,

To solve this problem, we will use Bayes' theorem, which allows us to update our beliefs about the probability of an event based on new information.

Let A be the event that a person has seen the advertisement, and B be the event that a person has purchased the game. We want to find the probability of A given B, i.e., the probability that a person who has purchased the game has also seen the advertisement.

We know that P(A) = 0.24 (24% of the market has seen the advertisement), P(B|A) = 0.42 (42% of those who see the ad have purchased the game), and P(~A|~B) = 0.93 (93% of those who have not seen the advertisement have not purchased the game).

We can use the complement rule to find P(B|~A), the probability of purchasing the game given that the person has not seen the advertisement:

P(B|~A) = 1 - P(~B|~A) = 1 - 0.93 = 0.07

Now we can use Bayes' theorem:

P(A|B) = P(B|A) * P(A) / P(B)

where P(B) = P(B|A) * P(A) + P(B|~A) * P(~A)

Plugging in the values, we get:

P(B) = 0.42 * 0.24 + 0.07 * (1 - 0.24) = 0.2956

P(A|B) = 0.42 * 0.24 / 0.2956 = 0.3408

Therefore, the probability that a person who purchased the game did not see the advertisement is:

1 - P(A|B) = 1 - 0.3408 = 0.659

Rounded to the nearest thousandth, the answer is 0.659.

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Using the function rule, the value of g(r +2)  is r-2

Given the function rule g(k) = k-4.

Then g(r + 2)  can be found by replacing k with r+2 in the function g(k):

g(r+2) = r + 2 - 4

           = r - 2

Therefore, g(r+2) gives r - 2 when evaluated using the function rule.

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Answer:

A. (1,4), (-5, 2), (7, 1), (-8, 2)

Step-by-step explanation:

Definition of a Function

A function is a relation between an input and an output set of values with the condition that every element in the input set relates only to one element in the output set.

From the four options presented in the question, we must select the only one that doesn't repeat the value for x and has a different value of y.

For example, the set

B. (1,4), (-5, 6), (1, 3), (-8, 2) is not a function because the input value of 1 has two different output values

C. (1,0), (-5,3), (7, 1), (-5,5) is not a function either because the input value of -5 has two different output values

The correct choice is:

A. (1,4), (-5, 2), (7, 1), (-8, 2)

Range because it measures the difference between the highest and lowest values in a dataset, provides a clear measure of variability for both sets of data. It is not affected by skewness or symmetry, which makes it a useful measure of variability for comparing the temperature consistency between Beach Town and Sunny Town.

What is the range?

A function's range can be used to describe one of two related ideas: The function's codomain a representation of the action A binary relation f between two sets X and Y is a function if there is exactly one y in Y such that f connects x to y for every x in X.

Here, we have

Given: A graph with the x-axis labeled Temperature in Degrees, with intervals 60 to 69, 70 to 79, 80 to 89, 90 to 99, 100 to 109, 110 to 119. The y-axis is labeled Frequency and begins at 0 with tick marks for every unit up to 14.

We have to determine which measure of variability should be used for both sets of data to determine the location with the most consistent temperature.

We concluded that Range because it measures the difference between the highest and lowest values in a dataset, provides a clear measure of variability for both sets of data. It is not affected by skewness or symmetry, which makes it a useful measure of variability for comparing the temperature consistency between Beach Town and Sunny Town.

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The operationalization of the used constructs of the model is not typically considered a part of the theoretical aspects of a model. The correct option is (B).

Operationalization refers to the process of defining and measuring the variables or constructs in a study. It involves turning abstract concepts into observable and measurable variables.

On the other hand, the theoretical parts of a model typically include:

A. The hypotheses corresponding to the model: This refers to the specific statements or predictions derived from the theoretical framework of the model.

Hypotheses provide testable expectations about the relationships between variables in the model.

C. A logical explanation of the relationship within a model: This involves providing a theoretical rationale or logical explanation for the expected relationships between variables in the model.

It is the theoretical framework that underlies the model and helps in understanding the underlying mechanisms or processes.

D. A graphical representation of the model: Graphical representation, such as diagrams or visual models, can be used to depict the structure or relationships within a model. It helps in visualizing the connections between variables and understanding the overall framework.

Therefore, B. The operationalization of the used constructs of the model does not belong to the theoretical parts of a model.

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Answer:

14/15

Step-by-step explanation:

simple

3/5 + 1/3= 14/15

it takes less time to get to the school .-.

Answer:

C

Step-by-step explanation:

sinθ=\(\frac{2}{5}\)

θ=sin⁻¹ ( \(\frac{2}{5}\) )

θ=23.57817848

2θ=47.15635696

sin2θ=sin(47.15635696)=0.7332121112°≈ ((4\(\sqrt{21}\))/25)

Answer:

cuz i am batman hahahhaahhahah

Step-by-step explanation:

Answer:5

Step-by-step explanation:

w(n)=4-1

=5

The general term formula for the given sequence is an = (2n + 1)(n²), where n represents the position of the term in the sequence.

Let's analyze the given sequence:

a1 = 3 × 16 = 48

a2 = 5 × 25 = 125

a3 = 7 × 36 = 252

a4 = 9 × 49 = 441

We can observe that each term in the sequence is obtained by multiplying (2n + 1) with n², where n is the position of the term in the sequence. This pattern continues for all the terms in the sequence.

So, the general term formula for the given sequence is an = (2n + 1)(n²), where n represents the position of the term in the sequence.

Therefore, the formula for the general term of the sequence is an = (2n + 1)(n²).

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e) The test statistic and P-value for the chi-square test of homogeneity would be -1.75 and 0.004, respectively.

A chi-square test of homogeneity is a useful tool for comparing two or more categorical variables. In this case, the two variables are smoking (smokers and non-smokers) and alcohol consumption (those who had consumed alcohol in the past week and those who hadn't).

The chi-square statistic is calculated by finding the difference between the observed and expected frequencies of the two groups and squaring it. The expected frequencies are found by multiplying the sample size by the overall probability of success (in this case, drinking alcohol).

The P-value is then calculated based on the chi-square statistic and the degrees of freedom (in this case, one). In this case, the chi-square statistic is -1.75 and the P-value is 0.004.

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Answer:

0 (as you already know)

Step-by-step explanation:

First we will simplify both sides of this equation:

5f = -125 + 175 + -35 + -15

Now we are going to Combine Like Terms:

5f = (-125 + 175 + -35 + -15)

5f = 0

Divide both sides by 5

5f / 5 = 0 / 5

F = 0

Hope this helps

Answer:

x^2 - 4x - 8

Step-by-step explanation:

see image.

combine like terms.

Answer:

10 x 15 feet

Step-by-step explanation:

Possible answers

1 x 150

2 x 75

3 x 50

5 x 30

10 x 15  seems the most reasonable size for a patio

The amplitude of the graph of a sine function is 2.

Given is sinusoidal function, we need to find the amplitude of the function.

We know,

The amplitude of the graph of a sine function is the vertical distance from the top of a peak to the center line.

This is the same as the vertical distance from the top of a peak to the lowest point on the graph, divided by 2.

The vertical distance = 8

Amplitude = 8

Hence the amplitude of the graph of a sine function is 2.

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Answer:

(1,0) and (3,0)

Step-by-step explanation:

y=x^2-4x+3

To factor we need to know what numbers add up to -4 and multiply will equal to 3.

y=(x-3)(x-1)

The zeroes would be 3 and 1.

x=3  so y=0 for (x-3)

x=1 so y=0 for (x-1)

If right pls give me brainliest thank you.

Answer:

(1, 0) and (3, 0)

Step-by-step explanation:

\(y=x^2-4x+3\)

Plug y as 0 to find the x-intercepts.

\(0=x^2-4x+3\)

Factor right side.

\(0=x^2-1x-3x+3\)

\(0=x(x-1)-3(x-1)\)

\(0=(x-1)(x-3)\)

Set factors equal to 0.

\(x-1=0\\x=1\\x-3=0\\x=3\)

x=1 or x=3 when y=0

ya man it's kinda hard I don't really know

The percentage of members that voted is 70%.

The art club had an election to select a president. 42 out of the 60 members of the art club voted in the election.

Therefore, the percentage of the members that voted can be calculated as follows;

percentage that voted = number of people that voted / total number members × 100

Therefore,

number of people that voted = 42

total number members = 60

Hence,

percentage that voted = 42 / 60 ×100

percentage that voted = 4200 / 60

Therefore,

percentage that voted = 70%

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