which of these approaches is generally done in a multi-stage sample? a.) the total population is divided into groups and then some groups are randomly selected. b.) a sample is made by randomly picking out elements from the total population. c.) a sample is made by randomly picking every nth element of the total population. d.) the population is subdivided into smaller and smaller clusters which are then sampled.

Greek number prefixes are employed in the naming of molecular (covalent) substances.

Greek number prefixes are employed in the naming of molecular (covalent) substances. Prefixes are always combined in order of size (left-to-right in the table below). For instance, "heptadecatetracta" (7 + 10 + 400) would be the prefix for the number 417.

We utilise prefixes (mono-, di-, tri-, etc.) at the beginning of each element in molecular compounds to denote the element's subscript, but we only use the prefix mono- for the compound's second element.

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Using the "S exchange" technique, Equation Two can be transformed into an additive equation by substituting the sigmoid function with a new variable. To prove the stability of the system described by the neural network equation, the eigenvalues of the weight matrix and the Lyapunov function need to be analyzed to ensure the system remains bounded and does not diverge.

To transform Equation Two into an additive equation, we can use the "S exchange" technique. By applying this method, the equation can be rewritten in an additive form. To prove the stability of the system described by the neural network equation, we need to demonstrate that any perturbation or change in the system's initial conditions will not cause the outputs to diverge or become unbounded.

(One) To transform Equation Two into an additive equation using the "S exchange" technique, we can substitute the sigmoid function $(a) with a new variable, let's say s. The sigmoid function can be approximated as s = (1 + e^(-a))^-1. By replacing $(a) with s, Equation Two becomes yi(t+1) = WijYj(t) + Oi * s. This reformulation allows us to express the equation in an additive form.

(Two) To prove the stability of this system, we need to show that it is Lyapunov stable. Lyapunov stability ensures that any small perturbation or change in the system's initial conditions will not cause the outputs to diverge or become unbounded. We can analyze the stability of the system by examining the eigenvalues of the weight matrix W. If all the eigenvalues have magnitudes less than 1, the system is stable. Additionally, the stability can be further assessed by analyzing the Lyapunov function, which measures the system's energy. If the Lyapunov function is negative definite or decreases over time, the system is stable. Proving the stability of this system involves a detailed analysis of the eigenvalues and the Lyapunov function, taking into account the specific values of A, Wij, and Oi in Equation Two.

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The probability of a student spending time reading given that the student spends time watching TV is  \(P(Reading|Watching\:\:TV)=0.12\)

If any two occurrences in sample space S, A and B, are specified, then the conditional probability of event A given B is:

\(P(A|B)=\frac{P(A\:and\:B)}{P(B)}\)

Probability theory is an important branch of mathematics that is used to model and analyze uncertain events in various fields, including science, engineering, finance, and social sciences. The concept of probability is based on the idea of random experiments, where the outcomes are uncertain and can vary each time the experiment is performed.

The probability of an event can be determined by analyzing the possible outcomes of the experiment and assigning a probability to each outcome based on the assumptions of the model. The theory of probability has several applications in real life, such as predicting the outcomes of games of chance, evaluating risks in insurance and finance, and making decisions in scientific research.

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Formula for the circumference of a circle = pi x 2 x radius

Circumference = 3

pi = 3.14

radius = r

---To find the radius, we will need to solve for it. Start by plugging in what we know.

3 = 3.14 x 2 x r

---Simplify by multiplying 3.14 by 2

3 = 6.28 x r

---Divide both sides by 6.28 to solve for r

r = 3 / 6.28 = 0.4777

---Round the decimal to the nearest tenth

r = 0.5

Hope this helps!

r=0.5

Hope it helps.

Do comment if you have any query.

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To write a differential equation that models the rate of change for this rumor spreading situation, we need to consider both the number of students who have heard the rumor (P) and the number of students who have not heard the rumor (200 - P). Let t be the time in minutes since the rumor began to spread.

Since the rate of change is directly proportional to both P and (200 - P), we can express the rate of change as dP/dt = k * P * (200 - P), where k is the constant of proportionality.

The differential equation representing this situation is:
dP/dt = k * P * (200 - P)

This equation models the rate at which the rumor spreads among the 200 students at the dance, considering both the students who have heard the rumor (P) and those who have not (200 - P).

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Answer:

69/5 or 13.8

Step-by-step explanation:

..…........

Answer:

No comprendo espanol. Yo se un muy poco.

Step-by-step explanation:

Combining Part 1 and Part 2, we conclude that A with the relative topology is locally compact.

To show that the closed subset A of a locally compact space (X, T) with the relative topology is locally compact, we need to prove two things: that A is locally compact and that it has the relative topology.

Let's break down the proof into two parts:

Part 1: A is locally compact
To show that A is locally compact, we need to prove that for every point x in A, there exists a compact neighborhood of x in A.

Since A is a closed subset of X, its complement X \ A is open in X. By the local compactness of X, for each x in A, there exists a compact neighborhood N of x in X. We can choose N such that N ∩ (X \ A) = ∅, i.e., N is disjoint from the complement of A.

Now, consider the intersection of A with N, denoted as N' = N ∩ A. Since N is compact and A is closed, the intersection N' = N ∩ A is closed in N. Moreover, since N is disjoint from X \ A, N' = N ∩ A is also disjoint from (X \ A) ∩ N, which is the complement of N' in N.

Therefore, N' is a compact neighborhood of x in A. Hence, A is locally compact.

Part 2: A has the relative topology
The relative topology on A is obtained by considering the subset A together with the open sets of X that intersect A. We need to show that the relative topology on A is the same as the topology induced by A as a locally compact space.

Let B be an open set in the relative topology on A. By definition, B = U ∩ A, where U is an open set in X.

We claim that U is also an open set in X with respect to the original topology T. Since X \ A is closed, its complement A = X \ (X \ A) is open. Therefore, U = U ∩ X = (U ∩ A) ∪ (U ∩ (X \ A)) = B ∪ (U ∩ (X \ A)), where B is open in A and U ∩ (X \ A) is open in X \ A. Thus, U is a union of two open sets in X, making it open.

Now, let's consider the topology induced by A as a locally compact space. In this topology, a set C is open in A if and only if C = V ∩ A, where V is an open set in A as a locally compact space.

Since V is open in A as a locally compact space, there exists a compact set K in A such that V contains an open set W in A, i.e., V = W ∪ (K ∩ A). Therefore, V = (W ∪ (K ∩ A)) ∩ A = (W ∩ A) ∪ ((K ∩ A) ∩ A) = W ∩ A.

As a result, the relative topology on A is the same as the topology induced by A as a locally compact space.

Combining Part 1 and Part 2, we conclude that A with the relative topology is locally compact.

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Answer:

\(x = -3\)

Step-by-step explanation:

\(3x - 2 = 4x + 1\)

Now taking 3x to right hand side of the eqn . & +1 to the left side eqn. , sign of 3x changes to -3x & +1 changes to -1 .

\(-2-1 = 4x - 3x\)

Now solving this , we get the value of x.

\(4x - 3x = -2 -1\\=> x = -3\)

Answer:

The answer for x is x = -3

Step-by-step explanation:

hope this helps

Answer: 2 divided 3/4

Step-by-step explanation: don't get mad at me if you get it wrong I just try to help people, by the way I am sorry you have to do i-ready its torture

Answer:

1680 girls

Step-by-step explanation:

if the amount of boy is 5/1200 you divide 5 by 1200 to get 240 so multiply 240 by 7

Ultimately, the specific goal for Atlas will depend on its unique circumstances, financial position, and growth objectives.

Setting a realistic goal for Atlas to reduce outstanding amounts each month depends on various factors, including the company's financial situation, industry norms, and specific objectives. However, a common approach is to aim for a consistent reduction in outstanding amounts over time while considering practical limitations and sustainability.

One possible goal could be to target a percentage reduction in outstanding amounts each month. This could be based on factors such as historical data, industry benchmarks, and the company's financial capabilities. For example, Atlas could set a goal of reducing outstanding amounts by 5% each month.

Alternatively, Atlas could establish a specific dollar amount as a target for reduction. This could be based on the company's financial goals, cash flow projections, and outstanding debt levels. For instance, Atlas could aim to reduce outstanding amounts by $10,000 each month.

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\(\huge\mathsf\blue{♧ANSWER♧}\)

\(\huge \mathfrak \blue{\frac{ - 7}{8} }\)

The amount of wrapping paper needed to cover the prism is 2 * (12 * 10 + 12 * 5 + 10 * 5) square inches, and Kenna would have enough wrapping paper if she purchases a roll that covers 4 square feet.

To calculate the amount of wrapping paper needed to cover the rectangular prism, we need to find the surface area of the prism.

The surface area of a rectangular prism is calculated by adding the areas of all six faces.

Given the dimensions of the rectangular prism:

Length = 12 inches

Width = 10 inches

Height = 5 inches

The expression to calculate the amount of wrapping paper needed is:

2 * (length * width + length * height + width * height)

Substituting the values:

2 * (12 * 10 + 12 * 5 + 10 * 5) = 2 * (120 + 60 + 50) = 2 * 230 = 460 square inches

Therefore, Kenna would need 460 square inches of wrapping paper to cover the prism.

To determine if Kenna has enough wrapping paper, we need to convert the square inches to square feet since the roll of wrapping paper covers 4 square feet.

1 square foot = 144 square inches

Therefore, 460 square inches is equivalent to: 460 / 144 ≈ 3.19 square feet

Since Kenna purchases a roll of wrapping paper that covers 4 square feet, she would have enough wrapping paper to cover the prism.

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High clouds are those that form at altitudes of at least 20,000 ft (6000 m).

At high altitudes, ice crystals form due to which cloud formation occurs.   Cirrus, cirrostratus, and cirrocumulus clouds are a few types of clouds. Cirrostratus clouds frequently form a thin, white layer that resembles a veil and covers the entire sky. Small, spherical, white clouds called cirrocumulus develop in long rows. Because they can provide information about changes in atmospheric pressure, temperature, and moisture levels in the upper atmosphere, these high clouds are crucial for meteorologists to investigate.

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Answer:

8 quarts, in 2 gallons

Step-by-step explanation:

Option c) mean may give misleading information if a distribution is skewed.

When a distribution is skewed, the measure of central tendency that may give misleading information is mean. Skewness is a statistical measure that helps determine the distribution's symmetry.

The mode is the value that appears the most frequently in the dataset. The median is the value in the middle of the dataset when it is sorted in numerical order.

The mean is the average of the dataset, which is calculated by summing all the values and then dividing the total by the number of observations. The skewness can be positive or negative, depending on the direction of the long tail of the distribution.

A positive skew occurs when the tail on the right side of the distribution is longer than the tail on the left side. In this case, the mean will be greater than the median, as the tail on the right side pulls the mean in that direction.

Conversely, a negative skew occurs when the tail on the left side of the distribution is longer than the tail on the right side. In this case, the mean will be less than the median, as the tail on the left side pulls the mean in that direction.

Therefore, option c) mean may give misleading information if a distribution is skewed.

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The probability of obtaining a sum less than or equal to 4 is:  1/12

An experiment consists of tossing two ordinary dice and adding their numbers together. To determine the probability of obtaining a sum of 8, we need to first count the number of ways we can get a sum of 8. We can do this by listing all the possible combinations of dice rolls that add up to 8:

2+6, 3+5, 4+4, 5+3, 6+2

So there are 5 ways to get a sum of 8.

Next, we need to determine the total number of possible outcomes for this experiment. Each die has 6 sides, so there are 6 x 6 = 36 possible outcomes.

Therefore, the probability of obtaining a sum of 8 is:

Number of ways to get a sum of 8 / Total number of possible outcomes = 5/36

Now let's determine the probability of obtaining a sum less than or equal to 4. We can use the same method as before:

1+1, 1+2, 2+1

So there are 3 ways to get a sum less than or equal to 4.

The probability of obtaining a sum less than or equal to 4 is:

Number of ways to get a sum less than or equal to 4 / Total number of possible outcomes = 3/36 = 1/12

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Answer:

-2/3

Step-by-step explanation:

Rise= -2

Run= 3

-2/3

Answer:

(A)\([x-(2+i)][x-(2-i)][x-\sqrt{2}][x+\sqrt{2}]\)

Step-by-step explanation:

A polynomial has a leading coefficient of 1 and the  following factors with multiplicity 1:

\(x-(2+i)\\x-\sqrt{2}\)

We apply the following to find the factored form of the polynomial.

\(\text{Complex conjugate of }x-(2+i)=x-(2-i)\\\\\text{Complex conjugate of }x-\sqrt{2}=x+\sqrt{2}\)

Therefore, the factored form of the polynomial is:

\([x-(2+i)][x-(2-i)][x-\sqrt{2}][x+\sqrt{2}]\)

Answer:

A

Step-by-step explanation:

EDGE 2021

Answer:

Step-by-step explanation:

For this, we kind of have to test points to solve it. First, we can test theh interval x<= -2. Plug in  -2 and we get a negative value which works. Next, let's try -2<x<0. Plug in -1 and get a positive value which doesn't work.

Next try 0<=x<=7. Plug in any number like 4 and get a negative value which works.

Finally, try x>7. Plug in 8 for example and you would get a positive value. So the solution is

x <= -2 OR 0 <= x <= 7

Answer:

2 * (Area/pi)^(1/2) = diameter

Step-by-step explanation:

The equation for the area of a circle is A = pi * r^2

We can divide both sides by pi to get:

A/pi = r^2

Then take the square root of both sides to get:

(A/pi)^(1/2) = r

Then, since D = 2 * r, we can multiply both sides of the above equation by 2 to get:

2 * (A/pi)^(1/2) = 2 * r = D

Answer:

d=2\(\sqrt{a/\pi }\)

Step-by-step explanation:

Answer:

EF = -120 inches

Step-by-step explanation:

AB + BC + CD + EF = 4G

AB + 2BC + 4CD + EF = 140

AB + 2(2AB) + 4(2(2AB)) + EF = 140

AB + 4AB + 8AB + EF = 140

13AB + EF = 140

EF = 140 - 13AB

EF = 140 - (13)(20)

EF = 140 - 260

EF = -120 inches

The length of EF is 40 inches long.

The triangle proportionality theorem states that if a line is drawn inside the triangle which is parallel to any side of the given triangle, then the line intersects other two sides at two different points. Then the division of the other two sides of the triangle will be in the same ratio.

Here we can use the proportionality theorem to find the length of EF.

Using the proportionality theorem,

AD / AG = BC / EF  [Equation 1]

Given that,

BC = 2 AB ⇒ AB = BC / 2

CD = 2 BC

Now, AD = AB + BC + CD

               = (BC / 2) + BC + 2 BC

               = 7/2  BC

AG is given as 140 inches.

Substituting the values in the Equation 1,

(7/2 BC) / 140 = BC / EF

BC get cancelled on both sides.

7 / (2 × 140) = 1 / EF

Cross multiplying,

7 EF = (2 × 140)

EF = 40 inches

Hence the length of EF is 40 inches long.

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The complete question is given below.

The true statement is Grade 7 students from School A are typically shorter than grade 7 students from School B because of the difference in the medians of grade 7 student heights at the schools. (option D)

A box plot is used to study the distribution and level of a set of scores. The box plot consists of two lines and a box. the two lines are known as whiskers.

The end of the first line represents the minimum number and the end of the second line represents the maximum number.

On the box, the first line to the left represents the lower (first) quartile. The next line on the box represents the median. The third line on the box represents the upper (third) quartile.

Median for School A = 57

Median for School B = 61

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The probability of getting a sample mean grand prize of exactly 84 thousand dollars is 2/6, which reduces to 1/3.

The mean of the four grand prizes is (34+54+74+94)/4 = 64. Therefore, the probability of selecting two envelopes and receiving an average of exactly 84 thousand dollars is the same as the probability of selecting two envelopes and getting a sum of 168 thousand dollars (since the sum of two values divided by two is equal to their average).

There are six possible combinations of two envelopes, as stated in the question. To find the probability of getting a sum of 168 thousand dollars, we need to find the number of combinations that add up to 168. These combinations are (74,94) and (94,74). Therefore, the probability of getting a sample mean grand prize of exactly 84 thousand dollars is 2/6, which reduces to 1/3.

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Answer:

this is not the right answer

Step-by-step explanation:

im sorry i just need points forgive me :(

Answer: 19%

Step-by-step explanation: (1500-1859)/1859x100 so 1500 minus 1859 over 1859 times 100 after you subtract 1500 and 1859 divide the answer -359 by 1859 and then you’ll get -0.193115 and then multiply that by 100 and you’ll get -19.3115% but since you want a whole percent you can’t round up because 3 is the next number meaning it stays the same making it 19% decrease

To determine the sample size required to estimate the proportion of registered voters who would vote for the Republican candidate with a margin of error of 0.01 and a 95% confidence level, we can use the formula: n = (z-crit)^2 * p * (1-p) / (E)^2

where:

- n is the required sample size

- z-crit is the critical value corresponding to the desired confidence level (95% confidence level corresponds to z-crit = 1.96)

- p is the estimated proportion from the initial sample (640/1200 = 0.5333)

- E is the margin of error (0.01)

Plugging in the values, we have:

n = (1.96)^2 * 0.5333 * (1-0.5333) / (0.01)^2 Simplifying the expression will give us the required sample size (n) needed to estimate the proportion with the desired margin of error and confidence level.

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Answer:

14

Step-by-step explanation:

because the side length are 5 and 5 and 4 which is 14.

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