find the lengths of the segments with variable expressions ​

Answer:

D

Step-by-step explanation:

surface area of cylinder

=(area of base)×2 + (area of curved surface)

\(=(\frac{20}{2} )^{2} \pi\)× 2 + \(20\pi\) × 25

=2 × \(\pi\) × \(10^{2}\) + 2 × \(\pi\) × 10 × 25

The answer is false as arithmetic operations are performed using arithmetic functions, not statistical functions. Arithmetic operations are performed on selected records in a database using arithmetic functions, not statistical functions.


Arithmetic operations in a database involve basic mathematical calculations such as addition, subtraction, multiplication, and division. These operations are used to manipulate numerical data in a database and perform calculations on selected records. Statistical functions in a database are used to analyze and summarize data. These functions include measures such as mean, median, mode, standard deviation, and variance. Statistical functions are used to provide insights into the data, identify trends and patterns, and make predictions. However, they are not used for arithmetic operations on selected records.

Finally, it is important to note that both arithmetic and statistical functions are essential tools for working with data in a database. Depending on the nature of the data and the analysis required, either type of function may be used. However, it is crucial to understand the differences between the two and use them appropriately to ensure accurate and meaningful results.

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When three standard six-faced dice are rolled, the probability that the sum of the three numbers rolled is 9 is equal to 10/216 or 5/108.

Total number of ways three dice can be rolled = 6 × 6 × 6 = 216.

Each dice can have any number from 1 to 6. The probability of rolling a particular number on a dice = 1/6.

The probability of rolling a particular number on three dice = (1/6) × (1/6) × (1/6) = 1/216.

In order to get a sum of 9, there are four combinations that can be rolled:

3 + 3 + 3 = 9

3 + 4 + 2 = 9

3 + 5 + 1 = 9

4 + 3 + 2 = 9

The probability of rolling any of these combinations = probability of rolling 3-3-3 + probability of rolling 3-4-2 + probability of rolling 3-5-1 + probability of rolling 4-3-2

= (1/216) + (3/216) + (3/216) + (3/216)

= 10/216 or 5/108.

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The precision of the estimate decreases when standard error of an estimate when the sample size in a SRS decreases. So, the correct answer is D).

The standard error of an estimate measures the variability of sample means around the population mean. As the sample size in a simple random sample (SRS) decreases, the sample mean becomes less representative of the population mean, resulting in more variability or less precision in the estimate.

The standard error increases as the sample size decreases because there is more uncertainty in the estimate due to the smaller sample size. Therefore, decreasing the sample size will increase the margin of error and decrease the precision of the estimate. So, the correct option is D).

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Answer:

691,2

Step-by-step explanation:

i found that

is it true ?

i hope it helps ! ?

The measure of length MO is 9.2 units

From the question, the given parameters are:

MN and NO is 4.6

The above statement means that

MN = 4.6

NO = 4.6

Next, we assume that the points M, N and O are collinear points.

This means that the points are on the same line

So, we have the following equation

MO = MN + NO

Substitute the known values in the above equation

MO = 4.6 + 4.6

Evaluate the sum

MO = 9.2

Hence, the measure of length MO is 9.2 units

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Answer:

C. The graph of g(x) is the graph of f(x) horizontally stretched by a factor of 5.

Step-by-step explanation:

The value of the probability is 0.822

In a standard deck, we have

P(Heart) = 1/4

This can be represented as

p = 1/4 and q = 3/4

The probability of getting the first heart in exactly k draws is given by:

P(k) = (1/4) * (3/4)^(k-1)

The probability of getting the first heart in 6 attempts or fewer is:

The sum of the probabilities of getting the first heart on the first, second, third, fourth, fifth, or sixth draw:

So, we have

P = P(1) + P(2) + P(3) + P(4) + P(5) + P(6)

P = (1/4) + (3/4)(1/4) + (3/4)^2(1/4) + (3/4)^3*(1/4) + (3/4)^4*(1/4) + (3/4)^5*(1/4)

Evaluate

P = 0.822

Hence, the probability is 0.822

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\(f(x) = - x + 1 \iff f(-1) = - (-1) + 1 = 1+1 = 2\)

\(\implies \bf f(-1) = 2\)

Answer: f(-1) = 2

Step-by-step explanation:

To find f(-1), we simply need to substitute -1 for x in the given expression for f(x):

f(x) = -x + 1

f(-1) = -(-1) + 1 [substitute x=-1]

f(-1) = 1 + 1

f(-1) = 2

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By identifying potential moderators, we can tailor interventions to meet the unique needs of different students.

Based on the regression analysis, we can infer that there is a statistically significant relationship between the four predictors (e.g. academic performance, social support, financial stability, and campus involvement) and the outcome of college satisfaction. However, we need to examine the coefficients and the p-values associated with each predictor to determine the strength and direction of the relationship.

To better understand how the predictors lead to college satisfaction, we can create a mediation hypothesis. For example, academic performance may lead to higher levels of social support, which in turn, may lead to greater campus involvement and ultimately, higher levels of college satisfaction. By identifying the mediating variables, we can better understand the causal pathway and identify potential intervention strategies.

In terms of a moderator, we can hypothesize that the relationship between the predictors and college satisfaction may vary based on the student's personality traits. For example, students who are more extroverted may benefit more from social support and campus involvement, whereas students who are more introverted may be more focused on academic performance and financial stability. By identifying potential moderators, we can tailor interventions to meet the unique needs of different students.

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Answer:

1.  -3x^2 + 13x + 5

2. 10y^2 - 7

Step-by-step explanation:

1. (7 + 4x - 8x^2) - (2 - 9x - 5x^2)

Combine Like Terms —›

(7) - (2) = 5

(4x) - (-9x) —› (4x) + (9x) = 13x

(-8x^2) - (-5x^2) —› (-8x^2) + (5x^2) = -3x^2

-3x^2 + 13x + 5

2. (2y^2 + 5xy - 8) - (5xy -1 - 10y^20)

(2y^2) - (-10y^2) —› (2y^2) + (10y^2) = 10y^2

(5xy) - (5xy) = 0

(-8) - (-1) —› (-8) + 1 = -7

10y^2 - 7

Answer:

\(5 + 13x -3x^{2}\)

\(12y^{2} -7\)

Step-by-step explanation:

We'll start out with the first expression given:

\((7+4x-8x^{2} ) - (2 - 9x-5x^{2} )\)

We can notice that there's a subtraction sign, or negative sign, outside of the second parentheses. We want to distribute that negative into all the terms inside of the parentheses:

\((7 + 4x - 8x^{2} ) - 2 + 9x + 5x^{2}\)

Recall that distributing a negative onto a negative term turns that into a positive term.

Now, we can start grouping like terms together, and then adding those like terms.

\(7 - 2 + 4x + 9x + 5x^{2} - 8x^{2}\)

\(5 + 13x - 3x^{2}\)

And that's the answer to our first expression.

Now, we'll move on to the second one, doing pretty much the same things as before - we'll start out by distributing the negative.

\((2y^{2} + 5xy - 8) - 5xy + 1 + 10y^{2}\)

Then, we'll group like terms together, then add to find our simplified expression.

\(2y^{2} + 10y^{2} + 5xy - 5xy + 1 - 8\)

\(12y^{2} - 7\)

If you have any further questions, let me know!

The smallest value within the class is the lower class limit, and the largest value within the class is the upper class limit.

A class limit is a set of boundary values in the form of a range that describes the lowest and highest data values that a class can contain. The lower class limit refers to the smallest data value in a class, whereas the upper class limit refers to the largest data value in a class. The width of a class is determined by the difference between the upper and lower class limits. Here are a few examples to give you a better understanding of how this works:

Class:              5-9 5 9

Lower Limit:    10-14 10 14

Upper Limit:    15-19 15 19

This shows class limits for three different classes.

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Answer:

4 pounds.

Step-by-step explanation:

The equation 24+10x=40+6x would solve it. X being the amount of pounds.

The number of pounds of books would the two companies charge the same amount of money is 4 pounds.

Given that, company A charges a $24 fee plus $10 per pound. Company B

charges $40 plus $6 per pound.

We need to find for how many pounds of books would the two companies charge the same amount of money.

Equations are mathematical statements containing two algebraic expressions on both sides of an 'equal to (=)' sign. It shows the relationship of equality between the expression written on the left side with the expression written on the right side. In every equation in math, we have, L.H.S = R.H.S (left hand side = right hand side).

Let the number of pounds be x.

Now, company A charges a $24 fee plus $10 per pound=24+10x

Company B charges a $40 plus $6 per pound=40+6x

The two companies charge the same amount of money. Then, 24+10x=40+6x

By solving equation, we get

10x-6x=40-24

⇒4x=16

⇒x=4

Therefore, the number of pounds of books would the two companies charge the same amount of money is 4 pounds.

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In a regression analysis, a(n) is used to predict a(n) is known as option (b).independent variable, dependent variable.

Regression analysis:

In the concept of statistics, the regression analysis is useful to come up with a predictive model consisting of dependent and independent variables. And the R-squared value for a regression equation indicates the percentage of variability in the dependent variable being expressed by the variability in the independent variables.

Given,

Here we need to find the type of variable for  a regression analysis, a(n) is used to predict a(n).

As per the definition of regression analysis, in the given question, we have two variable there are

=> a(n)

After prediction, the predicted value of a(n).

Here the first one is the independent variable because the this value is the based to predict the value of the other one is the dependent variable.

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Answer: B: Carl’s answer is correct, but he incorrectly labeled the leg lengths in step 2.

Step-by-step explanation:

I took the quiz on edge.

The length of segment MN is approximately 8.6 units.

Pythagorean theorem states that for a right triangle, the square of the hypotenuse is equal to the sum of the squares of the other two sides.

We can apply this theorem only in a right triangle.

Example:

The hypotenuse side of a triangle with the two sides as 4 cm and 3 cm.

Hypotenuse side = √(4² + 3²) = √(16 + 9) = √25 = 5 cm

We have,

To determine the length of segment MN using the Pythagorean theorem, we need to find the distance between points M and N.

The distance formula for two points in a plane is:

d = √[(x₂ - x₁)² + (y₂ - y₁)²]

where (x₁, y₁) and (x₂, y₂) are the coordinates of the two points.

So, for points M = (-3, 1) and N = (4, -4), we have:

d = √[(4 - (-3))² + (-4 - 1)²]

= √[7² + (-5)²]

= √[49 + 25]

= √74

Therefore,

The length of segment MN is approximately 8.6 units (rounded to one decimal place).

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Answer:

30

Step-by-step explanation:

Answer:

\(\boxed{\sf 6336}\)

Step-by-step explanation:

\(\sf 5\times\:6\times\:7\times \:5\times \:6+\left(12\times \:3\right)\)

We'll Follow the PEMDAS order of operations:

__________________________________

\(\sf 5\times\:6\times\:7\times \:5\times \:6+\left(12\times \:3\right)\)

1) Parentheses:-

\(\sf \left(12\times \:3\right)\)

\(\sf 36\)

\(\sf 5\times \:6\times \:7\times \:5\times \:6+36\)

2) Multiplication / Division:-

\(\sf 5\times \:6\times \:7\times \:5\times \:6\)

\(\sf 30\times \:7\times \:5\times \:6\)

\(\sf 210\times \:5\times \:6\)

\(\sf 1050\times \:6\)

\(\sf 6300\)

\(\sf 6300+36\)

3) Addition/ Subtraction:-

\(\sf 6300+36\)

\(\sf 6336\)

Answer:

add 3 to both sides

Step-by-step explanation:

In order to isolate the x-value first you need to:

x-3=12 add three to both sides

x=15

Answer:

add 3 to both sides

Step-by-step explanation:

Given

x - 3 = 12 ( isolate x by adding 3 to both sides )

x = 15

Answer:

Step-by-step explanation:

There is no solution as you have two variables and only one equation. The best you can do is solve for one variable as a function of the other.

\(7x^2+11y^2=40\\ \\ 11y^2=40-7x^2\\ \\ y^2=\frac{40-7x^2}{11}\\ \\ y=\sqrt{\frac{40-7x^2}{11}}\)

Answer:

$51.513

Step-by-step explanation:

First you covert 18% to decimal→0.18

Then you multiply 0.18 by 45.35→ 8.163

Finally you add 45.35 to 8.163 to get, 51.513

Answer:

X+8y=3, 2x-4y=-14

Step-by-step explanation:

Since we do not know the values of x or y we have to leave them the way they are because you can't combine x and y

We can use trigonometric ratio to find the value of x

From the question,

θ=22 opposite = x hypotenuse = 15

substitute the values into the formula and evaluate

cross-multiply

Therefore, the closest value is 5.6

Answer:

F' = (-6,3)

Distance = 12 units

Step-by-step explanation:

F is currently at (6,3).

Reflected over the y-axis, it would be at (-6,3).

That puts them 12 units apart.

The probability that at least one of the three people has been vaccinated is 92.8%.

Step-by-step explanation: Given, In a large population, 54% of the people have been vaccinated. Then, the probability that one person has been vaccinated is 54/100 = 0.54.

The probability that one person has not been vaccinated is 1 - 0.54 = 0.46. The probability that all three people have not been vaccinated is (0.46)³ = 0.097336. The probability that at least one person has been vaccinated is 1 - 0.097336 = 0.902664. Hence, the probability that at least one of the three people has been vaccinated is 92.8%.

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The rule in function notation for the courier company charge on delivery is

C = 15 + 1.6x

Independent variables  are the ones that you include in the model to explain or predict changes in the dependent variable.

The dependent variable is what you want to use the model to explain or predict. The values of this variable depend on other variables. It is the outcome that you’re studying. It’s also known as the response variable, outcome variable, and left-hand variable.

Given in the question,

A courier company charges $15 plus $1.60 per pound to deliver packages

Here , the dependent variable is cost of delivery because it is depending on how much a packages is weighting

The independent variable here is the weight of package because it doesn't depend on anything.

Let the cost of delivery be C and weight of package be x

The function for the charge will be :

C = 15 + 1.6x

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Answer:

3(6^2−1)

Step-by-step explanation:

Answer:

3(6^2−1)

Step-by-step explanation:

Now brainiest?

Answer:

I believe it is a 25% increase

Answer:

11.1111% increase fee for an accounting course,

5.55555% per each semester.

Step-by-step explanation:

Hope this helps! Please let me know if you need more help, or if you think my answer is incorrect. Brainliest would be MUCH appreciated. Have a great day!

Answer:

1a. Angle E is 15 because the three angles must equal 180 degrees

1b. x= 12, so angle D would be 50 degrees

1c. The triangle is an equilateral triangle

2a. y=-2/3 + 4

2b. It is perpendicular because the slope is negative reciprocal

2c. You can draw the line, but the equation is

y= x/2 + 5

2d. y= -2x + 11

The election of 2000 demonstrated that a poll may not be reliable if the sample size is too small (option d).

The factor that can impact the reliability of a poll is bias. If the sample is biased, it may not accurately represent the larger population, leading to skewed results. Bias can occur in several ways, such as selecting a sample that is not representative of the larger population, asking leading questions, or using a sampling method that favors a particular group.

In the 2000 election, both of these factors contributed to the unreliability of the polls. The race was extremely close, with the outcome depending on the results in a few key states. Pollsters struggled to accurately predict the outcome of the election, with some predicting a win for Al Gore and others predicting a win for George W. Bush.

Additionally, the sample sizes and methods used by pollsters were called into question. Some pollsters used small sample sizes, while others were accused of bias in their sampling methods. The combination of these factors led to unreliable poll results and uncertainty about the outcome of the election.

Hence the correct option is (d).

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Answer:

Hope this helps :)

Step-by-step explanation:

I believe it is the second one because it is the only one that makes a rectangular prism with with thin sides and a wide rectangular base.