Help me please l don’t understand pls give answers

Statistics is a set of mathematical procedures used to collect, analyze, and interpret data.

Generally, it involves collecting data from a sample population, organizing the data into a meaningful manner, and then applying statistical methods to draw conclusions from the data. Statistical methods include descriptive statistics, which summarize the data, and inferential statistics, which use the data to make predictions about a larger population.

Descriptive statistics uses various measures to summarize a population, such as the mean, median, and mode. The mean is the average of all the values in a population and is calculated by adding up all the values and dividing by the number of values. The median is the middle value when all the values in a population are arranged from smallest to largest. The mode is the most frequently occurring value in a population.

Inferential statistics uses the data from a sample population to make predictions about a larger population. For example, a researcher might use a statistical test to determine if a certain treatment is effective. The researcher would collect data from a sample of the population, then use a statistical test to determine if the treatment had an effect on the sample population. If the test is statistically significant, then the researcher can conclude that the treatment is likely to have an effect on the larger population.

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Answer:

44

Step-by-step explanation:

5 1/2 = 11/2 = 44/8

Subtract 1/8 from 44/8 until you finish the number all.

The answer is A. x>5

can i pls get brainliest

Answer:

x = 6 (i think)

Step-by-step explanation:

Answer:

The first one (circle split into 4), 5th one (rectangle split into 10), and last one (right triangle split into 2)

Step-by-step explanation:

You can do this by counting the amount of sections each shape is split into,  then seeing if the amount of shaded in parts is equal to the empty parts. If so, then half is shaded. There are exceptions, though, like the 4th image of a triangle. The top section is smaller and thinner than the bottom, making it not exactly 1/2. However the last triangle is 1/2 because both sections are equal.

Hope this helps!

3 miles and 15,480 feet are not equivalent because they measure different quantities. which is the correct answer would be an option (D).

Now, Multiply the area by the conversion ratio to convert a foot measurement to a square inch measurement.

Because one foot equals 12  inches, you may use the following easy formula to convert:

1 inches =  feet × 12

The correct answer is D) 3 miles, 15,480 feet

because 1 mile =5280 feet

3 mile =3 × 5280 = 15,840

The other pairs of measurements are all equivalent because they measure the same quantity in different units.

For example, 24 feet and 8 yards are equivalent because 24 feet is equal to 8 yards (1 yard =3 feet ; 8 yard= 8 × 3 = 24 feet).

Similarly, 24 inches and 2 feet are equivalent because 24 inches is equal to 2 feet, and 10 feet and 120 inches are equivalent because 10 feet is equal to 120 inches (1 foot = 12 inches; 10 feet=12 × 10=120).

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Answer:

The expression is a summation, or the sum of a sequence of terms. Each term is equal to 900 * (1.04)^n+1, where n starts at 1 and goes up to infinity.

To calculate this sum, we would need to find the limit of the sequence as n approaches infinity. However, finding the exact value of this sum is not possible and would require the use of mathematical tools like mathematical analysis.

To estimate the value, we can use a calculator or spreadsheet to calculate the sum for a finite number of terms and then see how the sum changes as we increase the number of terms. For example, if we calculate the sum for n = 1 to 100, we would get an estimate of the value. If we then calculate the sum for n = 1 to 200, we would get a closer estimate.

In this case, we can round the expression to the nearest integer, which would be 53.

Step-by-step explanation:

The angle subtended by an arc is twice the angle it subtends.

The angle is 90 degrees.

What is diameter of circle?

diameter is circle is twice the radius of circle.

The theorem to solve the given statement is :

The angle subtended by an arc is twice the angle it subtends.

let suppose, O be the center of circle,

The diameter AB forms on the circle and point P on the periphery of circle ,

so we have:

To prove : ∠APB=90°

We know that angle subtended by an arc at center is double the angle subtended at any point or circumference.

that is:

Angle subtended by arc AB at O = Double the angle subtended at P

⇒∠AOB=2∠APB

∵AOB is a straight line.

∠AOB=180°

2∠APB=180°

∠APB=90°

Angle formed by arc AB or semi circle is 90°

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To calculate the margin of error (M.E.) for a 95% two-sided confidence interval on the mean (μ) with a sample size of 26, we can use the formula:

M.E. = z * (σ / √n),

where z is the z-score corresponding to the desired confidence level, σ is the population standard deviation (unknown in this case), and n is the sample size. Since the population standard deviation (σ) is not given, we cannot calculate the exact margin of error. Therefore, none of the provided options (37.019, 9.592, 38.366, 31.555) can be determined as the correct answer without additional information. To calculate the margin of error, we would need either the population standard deviation or the sample standard deviation

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The limit of \((ex + x)^(^6^/^x^)\) as x approaches infinity is 1. As x becomes infinitely large, the exponential term dominates, resulting in the limit approaching 1.

To evaluate this limit, we can rewrite the expression as \((ex)^(^6^/^x^) * (1 + x/ex)^(^6^/^x^)\). As x approaches infinity, the first term \((ex)^(^6^/^x^)\)approaches 1 because the exponent tends to 0.

Now, let's focus on the second term \((1 + x/ex)^(^6^/^x^)\). As x approaches infinity, the x/ex term approaches 1, and we have \((1 + 1)^(^6^/^x^)\).

Taking the limit of this expression as x goes to infinity, we have \((2)^(^6^/^x^)\). Again, as x approaches infinity, the exponent tends to 0, resulting in (2)⁰, which is equal to 1.

Thus, the overall limit is given by the product of the limits of the two terms, which is 1 * 1 = 1.

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In this problem, we are asked to prove several identities using mathematical induction. The identities are: (a) 1+2+3+...+n = n(n+1)/2, (b) 1² + 2² + 3² + ... + n² = n(n+1)(2n+1)/6, (c) 1·2 + 2·3 + 3·4 + ... + n(n+1) = n(n+1)(n+2)/3, (d) 1² + 3² + 5² + ... + (2n-1)² = n(4n²-1)/3, and (e) 1+2·2+3·2²+...+n²−1 = (n-1)2^n + 1.

To prove these identities by mathematical induction, we typically follow a two-step process. First, we prove the base case, which is usually n = 1. We substitute n = 1 into each identity and show that the base case holds true. Second, we assume the identity is true for some arbitrary positive integer k and then prove that it holds for k+1.

For each identity, we will use the mathematical induction process to prove it. We will show that the base case holds true, and then assume the identity is true for some k and prove it for k+1. By successfully completing both steps, we can conclude that the identity holds true for all positive integers n.

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The number of visitors that we must sample to construct a 95% confidence interval is (b) 1,030 visitors.

In order to construct the 95% confidence interval with a margin of error of  ±3%, we need to find the sample size that will give us a margin of error of 0.03 or less.

The formula used to find desired sample-size is :

⇒ n = (Z² × p × (1-p)) / (E²)

Where, n = required sample size

Z = Z-score for required level of confidence (1.96 for 95% confidence)

p = proportion of visitors who favor proposal;

E = margin of error = (0.03);

We don't know the value of p, So, we use the sample proportion as an estimate:

⇒ p' = 89/150 = 0.5933;

Substituting the values,

we get,

⇒ n = (1.96² × 0.5933 × (1-0.5933)) / (0.03²)
⇒ 1029.67 ≈ 1030.

Therefore, the number of visitors to sample is (b) 1,030 visitors.

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Empirical, A knowledge of statistics is essential for anyone who wants to make informed decisions based on empirical evidence.

A knowledge of statistics helps us make decisions based on empirical evidence. Empirical evidence is data that has been collected through observation and experimentation, and statistics is a method for analyzing and interpreting this data. By using statistical tools and techniques, we can draw conclusions from empirical evidence and make informed decisions based on this information.

Statistics plays a crucial role in modern society, from medicine and public policy to business and finance. A knowledge of statistics enables individuals to understand and analyze data, to make informed decisions based on empirical evidence, and to communicate findings to others. Statistics helps us to quantify uncertainty and variability, to identify patterns and trends, and to make predictions based on past data. By using statistical methods, we can determine the probability of certain outcomes, assess risks and benefits, and evaluate the effectiveness of interventions or policies. For example, in medical research, statistics is used to test the effectiveness of new treatments or therapies, to determine the safety of drugs, and to identify risk factors for diseases. In public policy, statistics is used to analyze demographic trends, to assess the impact of social programs, and to inform decision-making around issues such as climate change or public health.

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750 mL is equivalent to 25.36 oz.

When measuring liquids, the metric system and the US customary system are commonly used. In the metric system, the standard unit of measurement for liquids is milliliters (mL) and in the US customary system, it's ounces (oz).

To convert between these units, you can use a conversion factor.

One way to convert mL to oz is to use the conversion factor of 1 oz = 29.5735 mL. To find the number of ounces in 750 mL, you can use this conversion factor to set up an equation:

750 mL = x oz

Where x is the number of ounces you want to find. To solve for x, you can divide both sides of the equation by the conversion factor:

x = 750 mL / 29.5735 mL/oz

x = 25.36 oz

It's important to note that this is an approximation and for more accurate measurements, you should use an online calculator or consult a chart.

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Answer:

400+4n ≥ 750; The club will need to raise an average of $87.50 or more per month.

Answer:

<6 and <16 are alternate exterior angles.

Answer:

Explanation: If something (a number or pattern) in a decimal is repeating, then you can put it in fraction form like this. the pattern is 8 .

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Answer:

\(\frac{8}{9}\)

Step-by-step explanation:

We have to create 2 fractions with the repeating number placed after the decimal point.

let x = 0.88.... → (1) ( multiply both sides by 10 )

10x = 8.88.... → (2)

Subtract (1) from (2), eliminating the repeating decimal

9x = 8 ( divide both sides by 9 )

x = \(\frac{8}{9}\)

Thus 0.888..... = \(\frac{8}{9}\)

Answer: \(\dfrac{8}{3}\ m\)

Step-by-step explanation:

Given

Length of the plank is \(6\ m\)

Foot of the flank is \(4\ m\) away from the wall

Lizard climbs 2 m up the wall

from the figure, the two triangles are similar

\(\therefore \dfrac{2}{6}=\dfrac{x}{4}\\\\\Rightarrow x=4\times \dfrac{2}{6}\\\\\Rightarrow x=\dfrac{4}{3}\ m\)

So, the distance from the wall is

\(\Rightarrow 4-x\\\\\Rightarrow 4-\dfrac{4}{3}\\\\\Rightarrow \dfrac{8}{3}\ m\)

Answer:

a) She did mistake in Step 2

b) when she take -3y common then the term should be: -3y(x+5) instead she wrote -3y(x-5)

Step-by-step explanation:

We need to find problem in Ms J solution.

Ms J solution:

\(Step \ 1: 4x^2 + 20x - 3xy - 15y\\Step \ 2: 4x(x + 5) - 3y(x - 5)\\Step \ 3: (x+5)(4x - 3y)\)

She did mistake in Step 2 when she take -3y common then the term should be: -3y(x+5) instead she wrote -3y(x-5)

Correcting the mistake:

\(Step \ 1: 4x^2 + 20x - 3xy - 15y\\Step \ 2: 4x(x + 5)\mathbf{- 3y(x +5)}\\Step \ 3: (x+5)(4x - 3y)\)

(A) If Two independent events, A and B, are such that P(A) = 0. 2 P(A U B) = 0. 8, then probability P(B) =  5/8.

The possibility of the result of any random event is referred to as probability. This term refers to determining how likely an event is to occur. What are the chances of getting a head when we toss a coin in the air, for instance? The quantity of outcomes depends on the response to this question. Here, the outcome could be either head or tail. Thus, there is a 50% chance that the result will be a head.

The probability serves as a gauge for the likelihood that an event will occur. It gauges how likely an event is to occur. The probability equation is given by;

P(E) = Number of Favourable Outcomes/Number of total outcomes

We know that

P(A∪B) = P(A) + P(B) - P(A∩B)

P(A∪B) = P(A) + P(B) - P(A).P(B)

0.8 = 0.2 + P(B) - 0.2.P(B)

0.5 = P(B)  - 0.2.P(B)

0.5 = 0.8.P(B)

P(B) = 0.5/0.8

P(B) = 5/8

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Answers:

C. 128

E. 200

Explanation:

We have two options, there are 160 students in fifth grade or there are 160 students in sixth grade

If there are 160 students in fifth grade, we can formulate the following proportion:

Where x is the total for the other grade (sixth grade). So, solving for x, we get:

So, one of the answers is 200

On the other hand, if there are 160 students in sixth grade, the proportion is equal to:

Where y is the total for the other grade (fifth grade). So, solving for y, we get:

So, the other answer is 128

Therefore, the answers are C. 128 and E. 200

Answer:

Quadrants I and II.

O: (-2, 2)

N: (-2, 4)

M: (1, 4)

P: (1, 2)

Step-by-step explanation:

When rotating about the origin 90 degrees in a counterclockwise direction, focus on the coordinates of one point on the preimage at a time. So, the x-coordinate on the image will be the opposite of the y-coordinate of the preimage, and the y coordinate of the image will be the x-coordinate of the preimage. That sounds complicated so here is an example from the problem.

O is a point on the preimage. Its coordinates are (2, 2). To find the x-coordinate, take the opposite of the image's y-coordinate. The y-coordinate is 2, so it will be a -2 x-coordinate on the image. To find the y-coordinate on the image, take the x-coordinate of the preimage (O). The x-coordinate of O is 2, so the y-coordinate of the image will be 2. Combine those together and after a 90 degree counterclockwise rotation, you get a point of (-2, 2)

Answer:

Step-by-step explanation:

when rotate counterclock wise 90 degrees:

(x,y)⇒(-y,x)

points                            (2,2)        (4,2)          (2,-1)          (4,-1)

CCW90 degrees           (-2,2)      (-2,4)         (1,2)           (1,4)

CCW 270 degrees        (2,-2)       (2,-4)        (-1,-2)         (-1,-4)

(x,y)⇒(y,-x)   the shape will be in quadrant 3 and 4

Answer:

B

Step-by-step explanation:

Both of the answers have to be the same solution.
10^2 = 25^2 = 725

26^2= 676

both of the solutions are not the same, so no that is not a right triangle.

The image is formed at a distance of 56.25 cm from the mirror, and its height is approximately -3.75 cm.

In this case, the focal length of the mirror is 25 cm, and the object distance is 45 cm. We need to find the image distance (q) and the image height.

Step 1: Finding the image distance (q)

Substituting the given values into the mirror formula:

1/25 = 1/45 + 1/q

To solve for q, we can rearrange the equation:

1/q = 1/25 - 1/45

Combining the fractions on the right side:

1/q = (45 - 25)/(45 * 25)

Simplifying further:

1/q = 20/1125

To isolate q, we take the reciprocal of both sides:

q = 1125/20

Simplifying:

q = 56.25 cm

Therefore, the image is formed at a distance of 56.25 cm from the mirror.

Step 2: Finding the image height

To find the image height, we can use the magnification formula, which relates the image height (denoted by "h'"), the object height (denoted by "h"), and the magnification (denoted by "m") of the mirror. The magnification formula is given by:

m = -h'/h = q/p

In this case, the object height (h) is given as 3.0 cm, and the image distance (q) is 56.25 cm. We need to find the image height (h').

Substituting the given values into the magnification formula:

m = -h'/h = q/p

h'/3.0 = 56.25/45

To solve for h', we can rearrange the equation:

h' = -(56.25/45) * 3.0

Simplifying:

h' ≈ -3.75 cm

The negative sign indicates that the image is inverted compared to the object.

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Answer: 16 + 3y

Step-by-step explanation:

(a^n)*(a^m) = a^(n + m)

That is the power of a product property, so the correct option is the third one.

The power of a product property refers to how we take the product of two elements with the same base and exponents.

Remember that:

a^n

means that we need to multiply a by itself n times.

Then:

(a^n)*(a^m)

Means that we need to multiply a by itself n times, and then another m times, then we can write:

(a^n)*(a^m) = a^(n + m)

That is the power of a product property, so the correct option is the third one.

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Solution:

From the first and last statement, "S was to the left of the LG" and "iP was to the left of the LG", it shows that the samsung and iphone were to the left of the samsung and thus, the samsung is the last phone on the right.

Also, the third statement, "the black phone was to the left of the iP" shows that the iphone is not black and thus there is a phone (samsung) to the left of the iphone.

Thus, the arrangement of the phone from left to right is:

Samsung, Iphone, LG or Black, White, Blue

Answer:

a)

b)

Explanation:

a) Let b represent the number of striped bass one is allowed to catch.

Since we're only allowed to catch at most 3 striped basses, that is, the number of striped basses can be less than or equal to 3 but not more, we can go ahead and write the inequality as seen below;

See below the graph of the above inequality on a number line;

b) Let l represent the length of each striped bass

Since each striped bass must not be less than 18 inches long, that is, each striped bass can

be more than or equal to 18 inches in length but not less, we can go ahead and write the inequality as seen below;

Graphing on a number line, we'll have;

To the nearest ten dollars, there would be approximately $81,329 in the account after 11 years.

To calculate the future value of an investment with compound interest, we can use the formula:

FV = P(1 + r/n)^(nt)

Where:

FV = Future value

P = Principal amount (initial investment)

r = Annual interest rate (as a decimal)

n = Number of times interest is compounded per year

t = Number of years

In this case:

P = $60,000

r = 3.4% = 0.034 (as a decimal)

n = 365 (daily compounding)

t = 11 years

Plugging in these values, we can calculate the future value (FV):

FV = $60,000 * (1 + 0.034/365)^(365*11)

Calculating this expression, we find:

FV ≈ $60,000 * (1.000093835)^40015 ≈ $81,329.20

Therefore, to the nearest ten dollars, there would be approximately $81,329 in the account after 11 years.

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Answer:

21/26

Step-by-step explanation:

In the simplest categorization, English has 26 alphabets. Out of which, 5 are vowels and rest 21 are consonants.

so the fraction would be 21/26

The probability of Hae 0.randomly picking a red ball from is 0.54.

Based on the given information, the odds in favor of Hae picking a red ball are 2:11. This means there are 2 favorable outcomes (picking a red ball) for every 11 unfavorable outcomes (not picking a red ball). To find the probability of Hae picking a red ball, we can use the following formula:
Probability = Favorable outcomes / (Favorable outcomes + Unfavorable outcomes)
In this case, there are 2 favorable outcomes and 11 unfavorable outcomes. So, the probability of Hae picking a red ball is:
Probability = 2 / (2 + 11) = 2 / 13
So, the probability of Hae randomly picking a red ball from the bag is 0.54.

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