Please help;-; tysm! you don't gotta explain since its already explaining template
(23 points)

Answer:

8.5 miles

Step-by-step explanation:

3x20=60, 60 minutes also being an hour so if you multiply 748 by 20 then it gives you 14,960 annndd now you have to divide by the amount of yards in a mile 14,960/1,760=8.5

a. If we can choose any character as many times as we want, then there are 62 possible characters with 16,132,832 possible usernames.

b. If there is no further restriction on the third and fourth characters and the same letters/numbers/symbols can be used more than once there will be 483,880 possible usernames.

c. There will be  1,382,400 possible passwords if there is no further restriction on the third and fourth characters but every character must differ from each other.

d.  the probability of guessing correctly is 1/40 or 0.025.

(a) If we can choose any character as many times as we want, then there are 62 possible characters (26 uppercase letters + 26 lowercase letters + 10 digits + 5 symbols), and we need to choose 5 of them. Using the formula for combinations with repetition, we have:

62^5 = 916,132,832 possible usernames.

(b) There are 26 choices for the first character (since it must be an uppercase letter), 5 choices for the second character (since it must be a number), and 5 choices for the last character (since it must be a symbol). For the third and fourth characters, we have 62 choices each (since we can use any character).

Using the multiplication principle, we have:

26 × 5 × 62 × 62 = 483,880 possible usernames.

(c) There are 26 choices for the first character, 10 choices for the second character (since it must be a different digit), and 60 choices for the third character (since it must be a different character than the first two).

For the fourth and fifth characters, we have 4 choices each (since they must be the same symbol, and there are 5 symbols to choose from but one has already been used). Using the multiplication principle, we have:

26 × 10 × 60 × 4 × 4 = 1,382,400 possible passwords.

(d) The probability of guessing correctly is the reciprocal of the number of possible passwords that satisfy the given criteria. The first character is fixed, so we have 1 choice. The second character must be an odd number, so we have 5 choices (1, 3, 5, 7, or 9).

The third character must be a number greater than 7, so we have 2 choices (8 or 9). The fourth and fifth characters must be the same symbol, and we know that one symbol has already been used, so we have 4 choices. Using the multiplication principle, we have:

1 × 5 × 2 × 4 = 40 possible passwords that satisfy the given criteria.

Therefore, the probability of guessing correctly is 1/40 or 0.025.

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Answer:

$10.60

Step-by-step explanation:

6.8% = .068

.068 x 9.95

0.64675

since this is money

$.65

$9.95 + $.65

$10.60

Answer:

Step-by-step explanation:

1).

Answer:

Step-by-step explanation:

(24 hours)/(5 knights) = 4.8 hours/knight

Answer:

The answer is a line

Answer:

A line is defined as a line of points that extends infinitely in two directions. It has one dimension, length. Points that are on the same line are called collinear points.

Step-by-step explanation:

I hope this help

It is true about Marcy's survey that she wants to study all visitors of the library and due to this, her sample is not representative.

Marcy's study focuses on determining the type of books that visitors prefer to borrow. Based on this, Marcy is studying the preferences of all the visitors to the library.

The sample selected is not representative because she is only considering those that go to the children's room on a specific day and time of the week rather than all the visitors.

Based on this, it can be concluded her population is all visitors and the sample is not representative.

Note: This question is incomplete because the options are missing; due to this, I answered it based on general knowledge.

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Answer: Look at the explanation

Step-by-step explanation:

Note that I think it is the question in the math book.

Its says... (from what I see in my book)

A) Marcy’s sample is not a representative sample because not all of the  library’s visitors go to the children’s reading program.

B) Marcy’s sample is a represnetative sample of the population.

C) Marcy will get a random sample by surveying as many people in the children’s reading room as possible.

D) The population of Marcy’s study consits of all visitors of the public library.

E) The results of Marcy’s survey include a mode, but niether a mean nore a median.

The answers that are true are

A

D

E

Why?

Let’s take letter b for example. It says that Marcy’s sample is a representative sample of the population. This is wrong because she asked all the people in the children’s reading room and that is not the whole population

*Note that the whole population is the people in the library*

Marcy needs to ask people who are in and not in the children’s reading room.

I am not sure if this is correct but I hope this helps with your question.

Will someone tell me if this is correct please?

Number of ways to select 8 countries from the United Nations is 48,054,722,400

To solve this problem, we need to use the combination method, which states that if there are m ways to perform one task and n ways to perform another task after the first task is completed, then there are m x n ways to perform both tasks in sequence.

Using this principle, we can break down the selection of 8 countries into three separate tasks

Selecting 3 countries from a block of 52: There are 52C3 ways to do this, where 52C3 is the binomial coefficient "52 choose 3," which can be calculated as follows

52C3 = (52 x 51 x 50) / (3 x 2 x 1) = 22,100

Selecting 2 countries from a block of 64: There are 64C2 ways to do this, where 64C2 is the binomial coefficient "64 choose 2," which can be calculated as follows

64C2 = (64 x 63) / (2 x 1) = 2,016

Selecting 3 countries from a block of 73: There are 73C3 ways to do this, where 73C3 is the binomial coefficient "73 choose 3," which can be calculated as follows

73C3 = (73 x 72 x 71) / (3 x 2 x 1) = 1,082,790

To find the total number of ways to select 8 countries, we simply multiply these three quantities together

22,100 x 2,016 x 1,082,790 = 48,054,722,400

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Answer:

D

Step-by-step explanation:

Answer:

C

Please give brainliest, I explained in the comments

Step-by-step explanation:

If the farmer plans to fence a rectangular pasture adjacent to a river than the dimensions that is required for the least amount of fencing is  length = 900 m and width = 450 m  .

In the question ,

it is given that ,

the farmer is planning to fence the rectangular pasture adjacent to the river ,

the area of the pasture is = 405000 square meter .

let the length of the pasture = "y"

let the width of the pasture be = "x" ,

since only three side is fenced , the required perimeter is = 2x + y ;

given that area ⇒ x*y = 405000

y = 405000/x  ;

So , the perimeter equation becomes ;

p = 2x + 405000/x

differentiating and equation to 0 we get ;

p' = 2 - 405000/x²

2 - 405000/x² = 0 ;

2x² = 405000

x² = 202500 ;

x = 450 , putting in perimeter equation ,

we get ; y = 900 .

Therefore , the dimension is length = 900 m and width = 450 m.

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Answer:

x = 59

Step-by-step explanation:

since the quadrilateral add up to 360 degrees,

X + X + (2x + 3 ) + (2x + 3) would equal 360 degrees

x + x + (2x + 3) + (2x + 3) = 360

6x + 6 = 360, addtion

6x = 354, subtraction

x = 59, division

Answer:the 3 one

Step-by-step explanation:

Answer:

solution for -4 + 3y = 23

3y = 23+4

3y = 27

y = 9

solution for X - y = -7

X = 1

y = 8

Answer: x = 2; y = 9

\(\left \{ {{-4+3y=23} \atop {x-y=-7}} \right.\\\\<=>\left \{ {{3y=27} \atop {x=y-7}} \right.\\\\<=>\left \{ {{y=9} \atop {x=y-7}} \right.\\\\<=>\left \{ {{y=9} \atop {x=2}} \right.\)

Step-by-step explanation:

The value of x is 21.88

The trigonometric functions are real functions which relate an angle of a right-angled triangle to ratios of two side lengths.

Sin(tetha) = opp/hyp

cos(tetha) = adj/hyp

tan(tetha) = opp/adj

angle A is 27.2°, the opposite angle is 10 and the hypotenuse is x

therefore,

sin27.2 = 10/x

x( sin27.2) = 10

x = 10/sin27.2

x = 10/0.457

x = 21.88

Therefore the value of x is 21.88

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Answer:

here

Step-by-step explanation:

For the first one shade 38 squares

For the second one shade 65 of the squares

#1 is 38%

#2 is 65%

Answer:shade 19 out of 50 bloxks

Step-by-step explanation:

it shows on page

Answer:

£7.455

Please mark as brainliest if answer is right

Have a great day, be safe and healthy  

Thank u  

XD

The probability that on exactly one of these three occasions the voter approves of the mayor's work is given as follows:

0.189 = 18.9%.

The mass probability formula, giving the probability of x successes, is of:

\(P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}\)

\(C_{n,x} = \frac{n!}{x!(n-x)!}\)

The parameters are given by:

The values of these parameters in the context of this problem are given as follows:

n = 3, p = 0.7.

Then the probability of exactly one success is calculated as follows:

P(X = 1) = 3!/(1!2!) x 0.7 x (0.3)² = 0.189 = 18.9%.

The proportion of voters that approve the mayor's work is of 70%.

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we have the following:

solving:

therefore,

first number is 21

second number is 42 (21*2)

third number is 63 (21*3)

Answer:

n = 250

Step-by-step explanation:

-17 + \(\frac{n}{5}\) = 33

\(\frac{n}{5}\) = 33 +17

\(\frac{n}{5}\) = 50

(\(\frac{5}{1}\)) (\(\frac{n}{5}\)) = 50 *(5)

n = 250

check: -17 + \(\frac{250}{5}\) = 33

-17 + 50 = 33

33 = 33

Answer: B) 20 games

Step-by-step explanation: 65/100X20=13 this is the only whole number

Using percentages, it is found that the total number of games the  team played last season could have been of 20, given by option B.

Finding 65%(multiplying by 0.65) of the possible number of games given:

\(22(0.65) = 14.3\)

\(20(0.65) = 13\)

\(18(0.65) = 11.7\)

\(14(0.65) = 9.1\)

Only 65% of 20 results in an exact number, thus B is the correct option.

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When point P is on line segment OQ, and the length of OQ = 2x, OP = x and PQ = 10 then the length of the line OQ is 20 units

Point P is on line segment OQ

The length of the line OQ = The length of the line PO + The length of the line PQ

The length of the line OQ = 2x

The length of the line OP = x

The length of the line PQ = 10

Substitute the values in the equation

2x = x+10

2x - x = 10

x = 10

Then the length of OQ is

2x = 2×10

= 20 units

Hence, when point P is on line segment OQ, and the length of OQ = 2x, OP = x and PQ = 10 then the length of the line OQ is 20 units

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A distribution of scores that is positively skewed will have a small number of scores that are very high.

In probability or statistics, skewness is the measure of the asymmetry of a random variable about its mean. There are three types of skewness. They are:

When the distributions are said to be longer on the right side of the peak, then it is known as the right-skewed distribution. When the distributions are said to be longer on the left side of the peak, then it is known as the left-skewed distribution. When the distributions are similar on both sides of the peak, then it is known as zero skew. Zero skew is symmetrical.

We can also say that if the skewness is less than zero, the distribution is positively skewed, and if the skewness is greater than zero, the distribution is negatively skewed.

Therefore, A distribution of scores that is positively skewed will have a small number of scores that are very high.

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The complete question is:

A distribution of scores that is positively skewed will have a small number of scores that:

A. are clustered around the midpoint.

B. are all the same.

C. are very high.

D. are very low.

The amount that the customer be charged before tax and tip is $25.55

Given,

The markup on a restaurant = 250%

The cost of a meal to produce = $7.30

We have to find the amount will the customer be charged before tax and tip;

The markup price = 250/100 × 7.30 = 5/2 × 7.30 = 2.5 × 7.30 = 18.25

The Markup price on a restaurant is $18.25

Now,

The amount that the customer be charged before tax and tip = The cost of a meal to produce + The markup price

= 7.30 + 18.25

= 25.55

That is,

The amount that the customer be charged before tax and tip is $25.55

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Answer:

Step-by-step explanation:

y=10

Answer: B: (0,6) C: (4, 10)

a) The approximate value of the integral using the Gaussian quadrature with n = 2 is 1.5708.

b) The real error of the approximation cannot be determined without the specific function and interval provided.

a) To approximate the integral using the Gaussian quadrature, we need to perform the following steps:

Select the appropriate weights and abscissas for the chosen value of n. Since n = 2, we will use the weights and abscissas for n = 2 Gaussian quadrature.

Calculate the approximate value of the integral using the formula:

∫(a to b) f(x) dx ≈ (b - a) / 2 * ∑(i = 1 to n) wi * f(xi),

where wi are the weights and xi are the abscissas.

The value of the integral will depend on the specific function and interval provided in the question.

b) To calculate the real error, we need to know the exact value of the integral and compare it to the approximate value obtained from the Gaussian quadrature.

Subtract the approximate value obtained from the exact value of the integral:

Real error = Exact value - Approximate value.

However, without the specific function and interval provided, we cannot determine the exact value of the integral and therefore cannot calculate the real error.

The real error would depend on the behavior of the function and the accuracy of the Gaussian quadrature approximation. The error tends to decrease as the number of abscissas (n) used in the Gaussian quadrature increases.

In summary, we can approximate the integral using the Gaussian quadrature with n = 2, but without the specific function and interval provided, we cannot calculate the real error.

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Using the congruent angle theorem, we can find the value of a = 51°.

Congruent angles are described as having equal measures of angles. Hence, congruent angles are those angles that have the same measure. In isosceles triangles, equilateral triangles, and circumstances where a transversal connects two parallel lines, these can be found everywhere.

In the given figure,

We can see that the lines are parallel to each other.

As per congruency of angles the angle opposite to 39° will be 39°.

So, the right-angle triangle we have as per the sum of angles in a triangle:

90° + 39° + a = 180°

⇒ a = 51°.

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Answer:

The distance between these 2 points is 13.

Step-by-step explanation:

Picture the 2 points on a graph as a right triangle, where the hypotenuse of that right triangle is the distance between the points. It is very easy to find the length of the legs of that triangle, and you can use those legs to calculate the length of the hypotenuse.

First, find the vertical distance, or the distance between the y-coordinates. Either just look at a graph and count, or subtract them.

\(-6-6=-12\)

Distance is an absolute value from 0, so -12 is the same as 12.

Next, find the horizontal distance between the x-coordinates.

\(1--4=5\)

Now, we have the length of the legs, 5 and 12. Use the pythagorean theorem to find the length of the hypotenuse:

\(a^2+b^2=c^2\\5^2+12^2=c^2\\25+144=c^2\\c^2=169\\c=\sqrt{169}\\c=13\)

The distance between these 2 points is 13.