answer quick for brainliest!

The statement is true. Simple random sampling is a method of selecting a sample from a larger population in which every member of the population has an equal chance of being selected for the sample.

This method is associated with a high degree of generalizability because it ensures that the sample is representative of the population. When a sample is representative of the population, the findings from the sample can be generalized to the entire population with a high level of confidence.

Simple random sampling is considered to be one of the most reliable and unbiased methods of sampling, making it a popular choice in many research studies.

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Answer:

Step-by-step explanation:

from the graph we konw the ∠ABD=∠DBC, because ∠DBC=20, so ∠ABD=20

\(=2*\sqrt{8(4)} +\frac{4}{3}\\ =2*\sqrt{32} +\frac{4}{3}\\=2*\sqrt{16*2} +\frac{4}{3}\\=2*\sqrt{16} *\sqrt{2} +\frac{4}{3}\\=2*4\sqrt{2} +\frac{4}{3} \\=8\sqrt{2} +\frac{4}{3}\\ =12.64704183\\\)

⇒Note it is up to you to HOW MANY DECIMAL PLACES YOU ROUND TO.

The remainder when 7 . 8 . 9. 15 . 16 . 17 . 23.  24. 25. 43 is divided by 11 is 10.

To find the remainder when 7 · 8 · 9 · 15 · 16 · 17 · 23 · 24 · 25 · 43 is divided by 11, follow these steps:

1. Calculate the product:

  7 · 8 · 9 · 15 · 16 · 17 · 23 · 24 · 25 · 43

= 12,20,22,02,88,000.

2. Divide the product by 11:

3,652,761,600 ÷ 11.

3. Determine the remainder:

In this case, the remainder is 10.

So, the remainder when 7 · 8 · 9 · 15 · 16 · 17 · 23 · 24 · 25 · 43 is divided by 11 is 10.

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We must find the slope of the original line using slope formula*.

\(m = \frac{19 - 15}{13 - 13} = \frac{5}{0} = 0\)

Because the given points have the same x-coordinate, the slope is 0.

Given that the original line doesn't have slope, the other two lines won't have one either.

Answer: \(x^{2} + \frac{1}{x^{2}} = 13\)

Have attached the solution, hope that helps...

The probability is the measure of the chance that the event will occur as a result of and experiment. Mutually exclusive probability of an event complement of event a relative frequency.

What kind of probability is founded on the observed data?

What three forms of probability are there?

Three main categories of probability exist:

Probability in theory. Scientific Probability. Probability axiomatically.

Probability refers to the possibility that a specific occurrence will occur. Probability is the proportion of the number of likely outcomes to the total number of outcomes of an event.

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Answer:

x=104

Step-by-step explanation:

In case you didn't know, "m || n" means that line "m" is parallel to line "n".

Line "t" crosses over lines "m" and "n". Since "m" and "n" are parallel, the angles of Line "t" are the same on either line. The angle measuring 104° is what's known as an exterior angle. In the image shown, B and G have the same measurement and so does A and H. Therefore, Angle "x" measure 104°.

For a random sample of 155 observations results in 62 successes.

a) A 90% confidence interval for the population proportion of successes is equals to the (0.335 , 0.465).

b) A 90% confidence interval for the population proportion of failure is equals to the (0.535 , 0.665).

We have a random sample of 155 observations results in 62 successes. So,

Observed value, x = 62

Sample size,n = 155

Population Proportion, p = x/n

= 62/155

= 0.4

a) We have to determine 90% confidence interval for the population proportion of successes. Using the distribution table, for 90% confidence interval, z-score value is equals to 1.6. Consider Confidence interval formula with proportion, CI \(= p ± z×\sqrt\frac{p(1-p)}{n}\)

substitute all known values in above formula, \(= 0.4 ± 1.64\sqrt\frac{0.4(1- 0.4)}{155}\)

= 0.4 ± 0.0645

= (0.4 - 0.0645 , 0.4 + 0.0645)

= (0.335 , 0.465)

b) Now, we have to determine a 90% confidence interval for the population proportion of failures.

Now consider, here failure observed values, x = 155 - 62

= 93

proportion, p = x/n

= 93/155 = 0.6

Consider the confidence interval formula, CI \(= p ± z×\sqrt\frac{p(1-p)}{n}\)

substitute values, \(= 0.6 ±1.64×\sqrt\frac{0.6(1-0.6)}{155}\)

= 0.6 ± 0.0645

= (0.6 - 0.0645 , 0.6 + 0.0645)

= (0.535 , 0.665)

Hence, required value is (0.535 , 0.665).

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The complete statement is folk tales and fairy tales

Both folk tales and fairy tales are types of fiction because they are imaginative stories that are not based on factual events or characters.

Folk tales

Folk tales are stories with no known creator. They were originally passed down from one generation to another by word of mouth. Folk tales are a type of traditional literature that is deeply rooted in the culture of a particular region or community.

They often feature supernatural elements, and their origins can be traced back many centuries.

Because they were passed down orally, different versions of the same tale may have developed in different regions, with variations in characters, plot, and theme.

Fairy tales

Fairy tales were often created to teach children behavior in an entertaining way. Fairy tales are a type of story that typically features magical creatures or events and often have a moral or lesson to teach. They were originally intended for both adults and children and were used as a way to teach moral values, societal norms, and important life lessons in an entertaining way.

The fairy tale genre has evolved over time, and modern fairy tales may have different themes and messages than traditional ones.

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Step-by-step explanation:

Sure! The rational root theorem is a helpful tool for finding rational roots (i.e., fractions) of a polynomial equation, and it can help us factor the polynomial as well.

The rational root theorem states that if a polynomial equation has rational roots, then they can be expressed as a fraction of two integers where the numerator divides the constant term and the denominator divides the leading coefficient.

In this case, the constant term is -18 and the leading coefficient is 2, so the possible rational roots are of the form:

±1, ±2, ±3, ±6, ±9, ±18 / ±1, ±2

We can test these values by plugging them into the equation and seeing if they result in a zero. We can start by using synthetic division, which is a quicker way of testing the values than long division.

Here are the steps for synthetic division using x = 1 as an example:

1 | 2 2 -18 -18

2 4 -14

2 4 -14 -32

The remainder is not zero, so x = 1 is not a root. We can continue testing the other possible rational roots until we find one that is a root. After testing all the possible rational roots, we find that x = -3 is a root. We can verify this by performing the synthetic division:

-3 | 2 2 -18 -18

| -12 30 -12

|--------------

| 2 -10 12 -30

We see that the remainder is zero, so x = -3 is a root. Using this root, we can factor the polynomial as:

2x^3 + 2x^2 - 18x -18 = (x + 3)(2x^2 - 8x + 6)

We can then factor the quadratic expression using either factoring or the quadratic formula:

2x^2 - 8x + 6 = 2(x^2 - 4x + 3) = 2(x - 1)(x - 3)

Therefore, the factored form of the polynomial is:

2x^3 + 2x^2 - 18x -18 = (x + 3)(x - 1)(x - 3)

I hope this explanation helps!

The probability that an elite athlete has a maximum oxygen uptake of at least 50 ml/kg is approximately 1.

Given, the mean maximum oxygen uptake for elite athletes is 60 ml/kg and the standard deviation is 6.4 ml/kg. We can use the standard normal distribution to find the probability of an athlete having a maximum oxygen uptake of at least 50 ml/kg.

First, we need to find the z-score corresponding to a maximum oxygen uptake of 50 ml/kg:

Using a standard normal distribution table or calculator, we can find the probability that a standard normal random variable is less than or equal to -1.56, which is approximately 0.06.

However, we are interested in the probability of an athlete having a maximum oxygen uptake of at least 50 ml/kg, which is equivalent to finding the probability of a standard normal random variable being greater than or equal to -1.56. This probability can be found by subtracting the probability of being less than -1.56 from 1:

Therefore, the probability that an elite athlete has a maximum oxygen uptake of at least 50 ml/kg is approximately 1, meaning it is highly likely that an elite athlete has a maximum oxygen uptake of at least 50 ml/kg.

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Answer:

j=38

Step-by-step explanation:

j/-2+7=-12

j/-2=-19

j=38

Without seeing the scatterplot or the data, it is difficult to determine the exact value of x that has the largest absolute prediction error.

However, in general, the x-value with the largest absolute prediction error is typically the x-value that is farthest away from the regression line.

To calculate the prediction error for a given x-value, you can first calculate the predicted y-value for that x-value using the equation of the regression line. Then, you can subtract the actual y-value for that x-value from the predicted y-value to get the prediction error.

The absolute value of the prediction error represents the magnitude of the difference between the actual and predicted values, regardless of whether the prediction was too high or too low. Therefore, to find the x-value with the largest absolute prediction error, you can calculate the absolute prediction error for each x-value and then identify the x-value with the largest value.

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Answer: A percentage is a way of expressing a number as a fraction of 100. It is denoted by the symbol % and is used to indicate a proportion or a part of a whole. For example, 50% means 50 out of 100, or half of a whole. Percentages are commonly used in a variety of contexts, including finance, mathematics, statistics, and everyday life. They are used to express changes in quantity or value, to calculate interest rates, to compare different amounts or values, and to represent probabilities and percentages in statistics.

Step-by-step explanation:

Answer:

Sure, here's a longer and cooler explanation of percentages:

In our everyday lives, we often encounter situations where we need to compare one quantity to another. For example, we might want to know what percentage of a pizza we've eaten, or what percentage of our salary goes towards taxes. That's where percentages come in – they allow us to express one quantity as a fraction of another, using a common base of 100.

So, what is a percentage, exactly? At its most basic level, a percentage is simply a way of expressing a fraction with a denominator of 100. For example, if we say that 25 out of 100 people like pizza, we can also say that 25% of people like pizza. The symbol "%" is used to represent a percentage, so we would write this as "25%".

But percentages are more than just a shorthand way of writing fractions – they also allow us to easily compare different quantities, even if they have different units. For example, if we know that a product has a 20% discount, we can easily calculate the sale price without needing to know the original price. Similarly, if we know that a city's population has increased by 10%, we can compare this to the population of another city, even if the actual numbers are different.

Percentages are used in a wide range of fields, from finance to science to sports. In finance, percentages are used to calculate interest rates, inflation, and stock market returns. In science, percentages are used to express probabilities, error margins, and experimental results. And in sports, percentages are used to compare player statistics and determine playoff rankings.

In short, percentages are a powerful tool for expressing and comparing quantities. Whether you're calculating a discount, measuring your golf handicap, or analyzing data from a scientific experiment, percentages are an essential part of the process. So next time you see a percentage sign, remember that it's not just a symbol – it's a gateway to a whole world of numerical comparisons and insights.

Step-by-step explanation:

The outcome of this question is determined by the number of alternative possibilities and their probability.

If there are only two conceivable outcomes, one of which is success and one of which is a failure, the theoretical chance of success is 50%. The theoretical probability of success is the sum of the probabilities of the two successful outcomes if there are three alternative outcomes.

If you know anything about probability, you're undoubtedly aware that the theoretical likelihood of any given result occurring in a given circumstance is always the same. Finally, the theoretical likelihood that any of the outcomes will be successful if a circumstance is repeated is the sum of the probabilities of each successful outcome divided by the entire number of alternatives.

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The correct question is-

What is the theoretical probability that any one of the outcomes will be a success if a situation is repeated again and again?

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Answer:

3 × x + 6 = 27 - 6 = 21 divided by 3 = 7 so 7 pencils in each box. 6 divided by 3 = 2 which means 7 + 2 = 9 pencils in the box total after Ryan gives 6 pencils to caleb.

Step-by-step explanation:

Hope this helps :)

Answer:

The cost is $115.20

Step-by-step explanation:

The locker is 8ft by 12ft by 9ft.

The volume is:

V = 8 × 12 × 9

V = 864 cubic feet

But the price is given by cubic yards so we need to find that first. (we have cubic feet)

A cubic yard is

1yd × 1yd × 1yd

And a yard is 3 feet, so that is the same as:

3ft × 3ft × 3ft

= 27cubic feet

Divide:

864/27

= 32

The locker is 32 cubic yards.

The price is $3.60 per cubic yard. Multiply.

32 × 3.60

= 115.2

The cost of the locker will be $115.20.

Player A has a smaller IQR and range, indicating less variability in their scores, therefore the correct option is: Player A is the most consistent, with an IQR of 1.5.

To determine the best measure of variability for the data, we need to consider the nature of the data and what we want to measure. Since the data is quantitative and consists of individual values, measures like range, interquartile range (IQR), and standard deviation (SD) are commonly used.

The range is the difference between the highest and lowest values in the data. The IQR is the difference between the 75th and 25th percentiles of the data. The SD measures the average distance of the values from the mean.

For Player A:

For Player B:

Based on these measures, we can see that Player A has a smaller IQR and range, indicating less variability in their scores, while Player B has a larger IQR and range, indicating more variability. Therefore, Player A is the more consistent player.

So the correct option is: Player A is the most consistent, with an IQR of 1.5.

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The quotient include the following: D. \(\frac{x(2x-3)}{7}\)

In Mathematics and Geometry, a quotient is a mathematical expression that is simply used to represent the division of a number (numerator) by another number (denominator).

Based on the information provided above, we can logically deduce the following mathematical expression;

\(\frac{2x-3}{x} \div \frac{7}{x^2}\)

By rearranging the mathematical expression using the multiplication operation, we have:

\(\frac{2x-3}{x} \times \frac{x^{2} }{7}\\\\2x-3 \times \frac{x }{7}\\\\\frac{x(2x-3)}{7}\)

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Answer:

I think it's B, I might be wrong though

Answer:

A

Step-by-step explanation:

The value of quadratic function is,

⇒ y = 9x² + 54x - 63

An algebraic equation with the second degree of the variable is called an Quadratic equation.

We have to given that;

The equation is,

⇒ y = 9 (x - 1) (x + 7)

Now, We can find the quadratic equation as;

⇒ y = 9 (x - 1) (x + 7)

⇒ y = 9 (x² + 7x - x - 7)

⇒ y = 9 (x² + 6x - 7)

⇒ y = 9x² + 54x - 63

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Answer: a = 2; AC = BC = 10

Step-by-step explanation:

AC = BC => 6a - 8 = 4a - 2

<=> 2a = 6

<=> a = 3

=> AC = 6.3 - 8 = 10

AC = BC => BC = 10

The value of the different trigonometric ratios given are:

sin θ  = 0.923

tan θ = 2.4

sec θ = 2.6

There are different trigonometric ratios such as:

sin x = opposite/hypotenuse

cos x = adjacent/hypotenuse

tan x = opposite/adjacent

We are given:

cos(θ) = 10/26, 0 ≤ θ ≤ π/2

Thus, sin θ and cos θ will be in the first quadrant based on the interval given. Thus:

cos⁻¹(10/26) = 1.176

sin 1.176 in radians  = 0.923

tan 1.176 in radians = 2.4

sec 1.176 = 1/cos 1.176 = 2.6

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Answer:

Angle 1 = 115 degrees

Angle 2 = 65 degrees

Step-by-step explanation:

Angle 1: Same-side interior angle of Line 1

Angle 2: Same-side interior angle of Line 2

We know that the difference between the angles is 50 degrees. Since the angles are supplementary, we can write the equation:

Angle 1 + Angle 2 = 180

Now, we need to express the difference between the angles in terms of Angle 1 or Angle 2. We can choose either angle, so let's express it in terms of Angle 1:

Angle 1 - Angle 2 = 50

We can rewrite this equation as:

Angle 1 = 50 + Angle 2

Now substitute this expression for Angle 1 into the first equation:

(50 + Angle 2) + Angle 2 = 180

Combine like terms:

2Angle 2 + 50 = 180

Subtract 50 from both sides:

2Angle 2 = 130

Divide by 2:

Angle 2 = 65

Now substitute this value back into the equation for Angle 1:

Angle 1 = 50 + Angle 2

Angle 1 = 50 + 65

Angle 1 = 115

Therefore, the angles are as follows:

Angle 1 = 115 degrees

Angle 2 = 65 degrees

Step-by-step explanation:

Given

\( {a}^{5} . {a}^{ - 3} \\ = {a}^{5 - 3} \\ = {a}^{2} \)

Hope it will help :)❤

Answer:

=a^5 - a^-3

=a^ 5 -3

= a^2.

Step-by-step explanation:

v = u + at

v-u = at

a = (v -u)/t

When t = 4, u=10, v=50

a = (50-10)/4

a= 40/4

a = 10