Mrs. Smith made 6 ¼ dozen cookies for the birthday party. At the end of the party, there were 3 ½ dozen cookies left. How many cookies did the guests eat?

the correct answer is B, between 6.5 and 9.5.The solution of given standard deviations Problem isit is unlikely that most of the data points would be located there.

Standard deviation is a statistical measure of the amount of variation or dispersion in a set of data values. It represents the average distance of each data point from the mean of the data set.

The answer to this question can be found using the empirical rule, which states that for a normal distribution, approximately 68% of the data falls within one standard deviation of the mean, 95% falls within two standard deviations of the mean, and 99.7% falls within three standard deviations of the mean.

Given that the mean is 8 and the standard deviation is 1.5, one standard deviation above the mean would be 8 + 1.5 = 9.5, and one standard deviation below the mean would be 8 - 1.5 = 6.5. Therefore, approximately 68% of the data would be expected to fall between 6.5 and 9.5.

Based on this information, we can eliminate answer choices A and D. Answer choice C is more than two standard deviations above the mean, so it is unlikely that most of the data points would be located there. Therefore, the correct answer is B, between 6.5 and 9.5.

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Therefore , the solution of the given problem of test statistic comes out to be 4.0085 is the test statistic for this two-sample t-test.

The Z-statistic, which confirms the precision of the conventional null hypothesis, is the only strategy that's even remotely close to a Z-test. Consider extrapolating a 2.5 E score in a 2 X y examination with a 0.05 threshold of significance. The p-value connected to this Z-value is 0.0124.

Here,

A two-sample t-test's test statistic is calculated as follows:

The formula for

=> t is (mean1 - mean2) / √((s1 / n1) + (s2 / n2)).

where mean1, mean2 represent the sample means for Group 1 (private institutions) and Group 2 (public institutions), respectively; s12, s22 represent the sample variances for

Groups 1 and 2, and n1, n2 represent the sample sizes for Groups 1 and 2, respectively.

Let's compute the test statistic based on the provided information:

The sample mean (mean1) for private institutions (Group 1) is $43,120.

$1,671,699,489.05 is the sample variance (s12).

Sample (n1) size is 37.

Public Institutions: Sample mean (mean2) = $25,469 (Group 2).

$1,682,553,858.66 is the sample variance (s22).

Number of samples

=>  (n2): 39

=> t = (43,120 - 25,469) / √((1,671,699,489.05 / 37) + (1,682,553,858.66 / 39))

=> t = 4.0085

Therefore, 4.0085 is the test statistic for this two-sample t-test.

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Answer:

[tex]\frac{2 \sqrt{5}}{5}[/tex]

Step-by-step explanation:

As given by SOH-CAH-TOA

tan is equal to opposite/adjacent.

therefore for A, the opposite would be equal to 2, and adjacent would be equal to [tex]\sqrt{5}[/tex] as the hypotenuse is never referred to as an adjacent side. so the answer would be tan(A) = [tex]\frac{2}{\sqrt{5}}[/tex] however, to rationalize the denominator you must multiply the fraction by [tex]\frac{\sqrt{5} }{\sqrt{5} }[/tex] .

[tex]\frac{2}{\sqrt{5}} *\frac{\sqrt{5}}{\sqrt{5}} = \frac{2 * \sqrt{5}}{\sqrt{5} *\sqrt{5}}[/tex]

then simplify

[tex]\frac{2 \sqrt{5}}{5}[/tex]

The value of the probability of rolling a number less than 4 is 1/2

The probability of rolling a number less than 4 on a fair 6-sided die can be calculated by counting the number of favorable outcomes and dividing it by the total number of possible outcomes.

Therefore, the probability of rolling a number less than 4 is:

P(less than 4) = favorable outcomes / total outcomes = 3/6 = 1/2

So the probability of rolling a number less than 4 is 1/2, or 50%.

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The value of x when the secant intersect is 5.

When two secants intersect outside a circle, the circle divides the secants into segments that are proportional with each other.

Therefore,

(4 + 5)4 = (x - 2 + x + 4)(x - 2)

9(4) = (2x + 2)(x - 2)

36 = 2x² - 4x + 2x - 4

2x² - 2x - 4 - 36 = 0

2x² - 2x - 40 = 0

x² - x - 20 = 0

x² - 5x + 4x  - 20 = 0

x(x - 5) + 4(x - 5) = 0

(x + 4)(x - 5) = 0

(x - 5)(x + 4) = 0

x = 5 or x = -4

Therefore,

x = 5

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Brand B contains 3% saline solution by volume.

The correct option is B.

We have,

Brand A was a six gallon 18% saline solution.

Final, she 18 gallon 8% saline solution mixture.

let the percentage of saline solution in brand B be x.

So, volume of saline solution

= 18% of 6 gallons  + x% of (18 - 6) gallons

Then the equation is given as,

0.18(6) + 0.01x(18 - 6) = 0.08(18)

1.08 + 0.12x = 1.44

0.12x = 0.36

x = 3

Thus, the percentage of saline solution in brand B is 3%.

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Answer:

-31

Step-by-step explanation:

Let's call the amount of money Andy has "x".

According to the problem, Kelly has 7 pence more than Andy, so Kelly has x + 7 pence.

Georgia has a penny less than Andy, so Georgia has x - 1 pence.

The total amount of money they have is 1.48, which we can write as 148 pence.

So we can set up the equation:

x + (x + 7) + (x - 1) = 148

Simplifying and solving for x:

3x + 6 = 148

3x = 142

x = 47.33

Since we're dealing with pence, we'll round down to the nearest whole number:

x = 47

So Andy has 47 pence, Kelly has 54 pence (47 + 7), and Georgia has 46 pence (47 - 1).

Answer: 2

Step-by-step explanation:

Answer: the answer is

Step-by-step explanation:

eggs

Answer: c=60

Step-by-step explanation: Based on the given conditions, formulate::

15/c= 6/24

By setting up and solving a proportion that represents the ratio of blue counters to total counters in two different scenarios, we find that an estimate for the total number of counters in the bag is 60.

We can set up a proportion to solve this problem. In this case, the counters represent the total numbers in different situations. Initially, there are 15 blue counters out of an unknown total 'x'. Meanwhile, Hussain picked 6 blue counters out of 24. As these are similar situations (picking blue counters out of a total), we can express this as a proportion as follows: 15/x = 6/24 .

To solve this proportion, simply cross multiply and solve for x: 15*24 = 6*x. Simplify this to 360 = 6x. Diving both sides by 6 gives the value of x as 60.

So an estimate for the total number of counters in the bag, or 'x', is 60.

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The probability of being a male and derive from a group of employees were asked whether they drive or walk to work is equal to 0.27.

From the table representing the probabilities of a group of employees.

Employees divided into two groups,

One is male .

Second is female.

While going for work there are two ways .

Derive to walk.

Walk to work.

Different probabilities are as follow,

Male and derive 0.27

Male and walk = 0.27

Female and derive = 0.23

Female and walk = 0.23

The required probability of being a male and derive

= 0.27.

Therefore, the probability of derive and male is equal to 0.27.

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If a sample of 32 runners is taken from a population of 201, the mean is equal to 201.

In Statistics and science, a population can be defined as a set of similar items or events that comprises every member of a group and from which a researcher, scientist, or experimenter, obtains or generates data for a statistical study.

In Statistics and science, a sample can be defined as a set of data that is collected from a population based on a well-defined sampling procedure.

In this context, we can reasonably infer and logically deduce that the mean (μ) could be equal to 201 runners because it represent the average.

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If Mrs. Lang has x students in each of her 5 classes, then she has a total of 5x students.

Ms. Easter has 4 less students in each of her classes, so she has x - 4 students in each of her 5 classes.

To find out how many students are in all of Ms. Easter's classes, we can use the expression:

5(x - 4)

This simplifies to:

5x - 20

Therefore, there are 5x - 20 students in all of Ms. Easter's classes.

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According to the information, the probability of missing the first penalty but scoring the second penalty is 3/16.

The probability of missing the first penalty is 1/4, and the probability of scoring the second penalty given that she missed the first one is 3/4. Therefore, the probability of missing the first penalty but scoring the second penalty is:

(1/4) * (3/4) = 3/16

So the probability is 3/16, or 0.1875 as a decimal, or 18.75% as a percentage, in its simplest form.

According to the above, the three diagrams would be like this:

      ------- Score (3/4)

     |

------|

     |------- Score (3/4)

     |

     ------- Miss (1/4)

             |

             ------- Score (3/4)

             |

             ------- Miss (1/4)

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the answer is option C: The difference in overall gain is $293.90.

How to solve the question?

To calculate the difference in overall loss or gain, we need to calculate the current value of the investor's portfolio for both high and low prices and then compare the two values.

First, let's calculate the current value of the investor's holdings for stock A:

High price: 120 shares x $105.19 per share = $12,623.80

Low price: 120 shares x $103.25 per share = $12,390.00

Next, let's calculate the current value of the investor's holdings for stock B:

High price: 35 shares x $145.18 per share = $5,080.30

Low price: 35 shares x $43.28 per share = $1,514.80

Now we can calculate the total current value of the investor's portfolio:

High price: $12,623.80 + $5,080.30 = $17,704.10

Low price: $12,390.00 + $1,514.80 = $13,904.80

The difference between the two values is:

High price: $17,704.10 - ($120 x $90) - ($35 x $145) = $299.30

Low price: $13,904.80 - ($120 x $90) - ($35 x $145) = $293.90

Therefore, the answer is option C: The difference in overall gain is $293.90.

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a. reflexive, symmetric, and transitive only
b. congruence and midpoint.

A segment proof is a type of proof that shows the steps used to establish the congruence or equality of two line segments. The goal of a segment proof is to provide a clear and logical argument that demonstrates why the two segments are equal or congruent.
Segment proofs typically involve using a combination of definitions, postulates, and theorems to justify each step of the argument. For example, to prove that two line segments are congruent, one might use the segment addition postulate, the definition of congruence, and the reflexive, symmetric, and transitive properties of congruence.

The appropriate matching is:

1. Segment proofs include the following definitions as justifications/reasons: ⇔ reflexive, symmetric, and transitive only

2. Segment proofs include the following as congruence of segments: ⇔ congruence and midpoint.

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Step-by-step explanation:

always and you come across a question that needs you to find the time or the distance or the speed the first thing that you need to think of is a triangle based formula so this is what you do you're right DStv in a triangle but you won't include the V therefore it will be DST and you just look at mainly at the formulas and try to identify the one that you're looking for and the way forward for example distance I have already drawn my small triangle and it's revealing that distance is equal to speed times time and speed is equal to a distance divided by time and time is equal to distance divided by speed in this case we're looking for the distance therefore I supposed to say speed time so was supposed to say 70 * 49,000 to get your answer

The synthetic division of (x³ - 12x² + 15x + 7) / (x +4) gives Quotient

x² + 8x -17.

We have to divide.

(x³ - 12x² + 15x + 7) / (x +4)

Now, performing the division we get

              (x + 4) | x³ - 12x² + 15x + 7 | x² + 8x -17

                           x³ - 4x²

                         ________

                                  8x² + 15x

                                   8x² + 32x

                               ___________

                                             -17x + 7

                                               -17x -68

                                             __________

                                                          61

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The reasonable constraint so the function is at least 600 would be A. 0 ≤ x ≤ 20.

Given the function y = -2x² + 40x + 600, we want to find the constraint for x so that the function's value is at least 600.

Since the parabola opens downward (as a is negative), the function will be at least 600 for all values of x within the interval where the parabola is above y = 600. The vertex of the parabola is at its maximum value, so we should look for the interval around the vertex (10, 800).

Looking at the given constraints, the option "0 ≤ x ≤ 20" is a reasonable constraint that ensures the function is at least 600. The parabola starts at a value of 600 at x = 0, reaches its maximum value at the vertex, and then returns to a value of 600 at x = 20.

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Dear Editor,


I am writing to express my concern about the issue of leakages in Zambia. The constant leakages of natural resources such as oil, gas and minerals have been a major setback to the country's economic growth and development.


It is disheartening to note that despite the country being rich in natural resources, the benefits of these resources have not been fully realized due to leakages. This has led to a loss of revenue that could have been used to improve the lives of citizens through investments in education, healthcare, and infrastructure.


Furthermore, leakages also have negative environmental impacts, which can affect the health and wellbeing of communities living in the vicinity of these resources.


As a concerned citizen, I urge the government to take decisive action to curb leakages and ensure that the country's natural resources are utilized for the benefit of all Zambians.


Sincerely, [Your Name]

There are 2 sides.

First side is 12 by 2 so you would multiply them together which is 24 and since there is another side the same length multiply by 2 which is 48.

Second side small side is 2 by 4 so multiply them together which is 8 and since there is another side the same demension multiply 8 by 2 which is 16.

The last side is 12 by 4 so again multiply them together which is 48. Multiply it by two since there is another side with same dimension which is 96.

Now do 48 + 16 + 96 (the answer gotten after finding the areas for each sides and their identicals) which is 160 ft²

The label for rectangular prism that has a surface area of 96 square meters is in the attached image.

The characteristics of the above quadratic unction y=-0.8x^2 - 4x are given as follows.

The vertex is (5, -22).

The axis of symmetry is x = 5.

The function is increasing when x < 5 and decreasing when x > 5.

The x-intercepts are (-5, 0) and (0, 0).

The domain is all real numbers and positive when x < 0.

The range is (-∞, -22].

The function is negative when x > -5.

The  y-intercept is (0,0).

The function is negative when x is less than -5/2 and positive when x is greater than -5/2.

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Answer: The expected number of bulbs that would last longer than 22,250 hours is approximately 2,857.

Step-by-step explanation:

To solve this problem, we can start by finding the z-score for 22,250 using the formula:z = (x - mean) / standard deviationz = (22,250 - 20,000) / 2,250 = 1Next, we need to find the proportion of bulbs lasting longer than 22,250. We can look up this proportion in a standard normal distribution table or use a calculator, which gives us a probability of 0.1587.Finally, we can use this probability to find the expected number of bulbs that will last longer than 22,250:Expected number of bulbs = probability * total number of bulbs sold Expected number of bulbs = 0.1587 * 18,000 = 2,857Therefore, we can expect that approximately 2,857 of the 18,000 bulbs sold will last longer than 22,250 running hours.

Answer:

the afternoon is the right one

Answer:

3246

Step-by-step explanation:

To calculate this equation, we need to follow the order of operations, also known as PEMDAS. First, we evaluate anything inside parentheses, which in this case is (82-33), giving us 49. Next, we perform division, so we have 6 ÷ 49. Then, we multiply 49 and 66, resulting in 3234. Finally, we add 12 to 3234, leading to the final answer of 3246. Therefore, the value of the expression 12+6÷(82-33)x66 is 3246.

Answer:

3246

Step-by-step explanation:

The possible values for the perimeter of Rebecca’s garage door are 48 feet or 48 inches

What is meant by perimeter?

Perimeter is the total length of the boundary of a two-dimensional shape. It is the sum of the lengths of all sides of the shape. The perimeter is commonly used to measure the distance around an object or figure and is often used in geometry to calculate the area of a shape.

According to the given information

The perimeter of a rectangle is calculated by adding the four sides of the rectangle. The formula for the perimeter of a rectangle is given as P = 2 (Length + Width) 12.

Therefore, the possible values for the perimeter of Rebecca’s garage door are 48 feet or 48 inches

Complete question is

Rebecca found the length and width of the 6. garage door. She used the measurements to find the perimeter of the garage door. Which of the following could be the perimeter of Rebecca's garage door? F 48 square feet /G 48 square inches/ H 48 feet/ J 48 cubic feet​

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The probability that the bus will arrive early is 0.1, or 10%.

It is possible to calculate the likelihood that the bus will arrive early using the rule that the sum of all possible outcomes must equal 1.

P(on time) + P(late) + P(early) = 1 if P(E) is the likelihood that the bus will arrive early.

Using the probabilities as a replacement, we get:

0.6 + 0.3 + P(E) = 1.

For P(E), use the formula:

P(E) = 1 - 0.6 - 0.3 = 0.1.

Therefore, the probability that the bus will arrive early is 0.1.

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