HELP ASAP 25 POINTS PLEASE

The 90% confidence interval for the mean pressure is calculated equivalent to (6.39, 7.99).

A t-distribution table is a statistical table that lists critical values of the t-distribution for various levels of significance and degrees of freedom. The t-distribution is a probability distribution that is used when the sample size is small or when the population standard deviation is unknown.

The table is organized by degrees of freedom (df), which is calculated as n-1, where n is the sample size. It also lists different levels of significance, usually ranging from 0.01 to 0.5 or more. The critical values are listed in the table corresponding to the degrees of freedom and the significance level. To use a t-distribution table, you need to know the degrees of freedom and the level of significance.

To calculate the 90% confidence interval for the mean pressure, we can use the formula:

CI = X' ± Z*(σ/√n)

Where X' is the sample mean, σ is the sample standard deviation, n is the sample size, and Z is the critical value for a 90% confidence interval.

Since the sample size is 12, we need to use a t-distribution with 11 degrees of freedom to find the critical value, because we are estimating the population standard deviation from the sample. Using a t-distribution table or calculator, we can find that the critical value for a 90% confidence interval with 11 degrees of freedom is approximately 1.796.

Substituting the values into the formula, we get:

CI = 7.2 ± 1.796*(1.2/√12)

= 7.2 ± 0.81

Therefore, the 90% confidence interval for the mean pressure is:

(7.2 - 0.81, 7.2 + 0.81) or (6.39, 7.99)

So, we can say with 90% confidence that the true mean pressure of the machine lies between 6.39 thousand psi and 7.99 thousand psi.

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Dividing the profit ratio after two years into equal portions for A and B is 9:2.

Ratios frequently appear in daily life and, by putting numbers into perspective, help to systematize many of our interactions. By making quantities easier to comprehend, ratios enable us to measure as well as express quantities.

One of the most typical ways to write a ratio with a colon as a the whole comparison, like in the example above with the children and adults. Ratios can also be expressed as a fraction because they are straightforward division problems.

Given data:

Investments by A = 90,000

Investments by B = 20,000

ratio of profit after 2 years:

profit of A /  profit of B = Investments by A / Investments by B

profit of A /  profit of B =  90,000 / 20,000

profit of A /  profit of B = 9/2

Thus, dividing the profit after two years into equal portions for A and B is 9:2.

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Complete question:

A and B started a business investing Rs. 90,000 and Rs 20,000

respectively. In what ratio the profit earned after 2 years be divided

between A and B respectively?

Answer:

Step-by-step explanation:

Puedo ayudarte con tu cálculo. (√7) 2 es lo mismo que √(7^2), que es igual a 7. Por lo tanto, el valor de (√7) 2 es 7.

Answer:

Step-by-step explanation:(−4+4i)⋅(3+2i);

= -4(3+2i)+4i(3+2i);

=-12-8i+12i-8;

= -20+4i

Answer:

0.75

Step-by-step explanation:

0.75

or  3/4

Answer: 3/4

3/8x2= 3/4

Therefore, the measure of angle P is approximately 22.62 degrees (rounded to the nearest hundredth).

So, the final answer is P ≈ 22.62.

A triangle is a closed geometric shape that has three sides, three angles, and three vertices (or corners). It is one of the most basic and important shapes in geometry. The sum of the angles in a triangle is always 180 degrees, and the length of each side can be calculated using the Pythagorean theorem or other geometric formulas. Triangles can be classified into different types based on the length of their sides and the size of their angles, such as equilateral, isosceles, scalene, acute, obtuse, and right triangles. Triangles are used extensively in mathematics, science, engineering, and many other fields.

To find the measure of angle P, we can use the Pythagorean theorem and trigonometric functions. Here's the step-by-step solution:

From the given information, we know that one angle of the triangle is 90 degrees, and the lengths of the adjacent sides are 5 and 13.

Using the Pythagorean theorem, we can find the length of the hypotenuse:

c^2 = a^2 + b^2

c^2 = 5^2 + 13^2

c^2 = 194

c = sqrt(194)

c ≈ 13.93

So the length of the hypotenuse is approximately 13.93 units.

Now, we can use the trigonometric function sine to find the measure of angle P:

[tex]sin(P) = opposite / hypotenuse[/tex]

[tex]sin(P) = 5 / 13.93[/tex]

[tex]P = sin^{-1(5/13.93)}[/tex]

P ≈ 22.62 degrees

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The standard form of the equation is as follows:

3x -2y + 5 = 0

A mathematical statement that has two expressions with equal values separated by the symbol "equal to" is known as an equation. as in 3x + 5 Equals 15, for instance.

Equations come in a variety of forms, including linear, quadratic, cubic, and others.

In the question,

The given equation is: 2y = 3x + 5

Standard form: ax + by + c = 0

Now,

2y = 3x + 5

Subtracting 2y from both the sides:

0 = 3x + 5 - 2y

Rearranging the equation we get,

3x -2y + 5 = 0

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The circumference of the bagel is 4.71 inches

The circumference is the distance around the edge of a circle. It is the length of the boundary that encloses the circle.

The bagel’s circumference can be calculated using the formula:

C = 2πr

where r is the radius of the bagel.

Substituting r = 0.75 inches in the formula, we have:

C = 2 * 22/7 * 0.75

C = 4.71 inches

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Complete Question

If the radius of the bagel's hole is 0.75 inches, what is the hole's circumference, in inches?

the final velocity is approximately 14.5 meters per second.

The rate at which an object's velocity alters over time is known as acceleration. It is a vector quantity, which means it has both magnitude (a numerical value) and direction.

Using the formula: v² = u2 + 2as

We can plug in the values given:

u = 6 m/s (initial velocity)

a = 3 m/s² (acceleration)

s = 29 m (distance)

v² = (6 m/s)² + 2(3 m/s²)(29 m)

v² = 36 m²/s² + 174 m²/s²

v²= 210 m²/s²

To solve for v, we need to take the square root of both sides of the equation:

v = √(210 m²/s²)

v ≈ 14.5 m/s (rounded to one decimal place)

Therefore, the final velocity is approximately 14.5 m/s.

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The complete question is:

v²=u²+2as

Where v

is the final velocity (in m/s), u

is the initial velocity (in m/s), a

is the acceleration (in m/s²) and s

is the distance (in meters).

Find v

when u

is 6 m/s, a

is 3 m/s², and s

is 29 meters.

Answer:

x = 0, 3/4, 1/5

Step-by-step explanation:

This equation is already factored into 3 terms.

For this expression to equal 0, any of the terms must be equal to 0. Set each factor equal to 0 and solve for x.

x^2 = 0

x = 0

4x - 3 = 0

4x = 3

x = 3/4

5x - 1 = 0

5x = 1

x = 1/5

The solutions are x = 0, 3/4, 1/5

By answering the presented question, we may conclude that As a result, inequality the correct answer is D) 300 g.

In mathematics, an inequality is a statement that compares two values or expressions and shows the relationship between them, usually using the symbols > (greater than), < (less than), ≥ (greater than or equal to), or ≤ (less than or equal to).

For example, "3 > 2" is an inequality that states that 3 is greater than 2. Similarly, "x ≤ 5" is an inequality that states that the value of x is less than or equal to 5.

Inequalities are used to represent ranges of possible values and are commonly used in algebra, calculus, and other branches of mathematics. They are often used to describe constraints in optimization problems, such as finding the maximum or minimum of a function subject to certain conditions.

To begin, we must convert the weights to the same units. We can convert rabbit weight to grammes as follows:

300 grammes = 0.3 kilos

We can also convert duck weight to grammes:

700 grammes = 0.7 kilos

We can now multiply the weights of rabbits and ducks:

300 grammes plus 700 grammes equals 1000 grammes

300 grammes plus 1300 grammes plus 700 grammes equals 2300 grammes.

To calculate how many more grammes of pellets Al feeds the chickens than the rabbits and ducks combined, subtract the total weight of pellets fed to the rabbits and ducks from the weight of pellets fed to the chickens:

1300 grammes minus 1000 grammes equals 300 grammes

As a result, the correct answer is D) 300 g.

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Maybe you're bad at math.

But I don't think that's true.

Try reading the questions more carefully and properly reading/understanding the material.

If you have any future questions, please ask me! I would be glad to help with your geometry work.

Answer: $1,800

Step-by-step explanation:

There are 5 classes in the frequency table.

The frequency of each data point or interval in a dataset is displayed in a frequency table. It is a technique for arranging data such that patterns and connections within the data may be examined. Two columns are normally present in the table: one for the intervals or data points (referred to as classes) and the other for the frequency of recurrence for each class. The classes may be intervals of equal size or they may be determined by the data's relevant categories or values.

From the given table we have:

Class 1: 23-24 (frequency of 7)

Class 2: 25-26 (frequency of 2)

Class 3: 27-28 (frequency of 6)

Class 4: 29-30 (frequency of 4)

Class 5: 31-32 (frequency of 1)

There are 5 classes in the frequency table.

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The correct answer is the bar graph with bars centered on the values 0.00, 0.33, 0.67, and 1.00, which corresponds to option (d).

To find the sampling distribution of the sample proportion of males for all samples of size n = 3, we need to consider all possible samples of size 3 that can be taken from the population of 6 friends. There are a total of 20 such samples, which are:

Andre, Bella, Carlos

Andre, Bella, Desirae

Andre, Bella, Edgar

Andre, Bella, Frances

Andre, Carlos, Desirae

Andre, Carlos, Edgar

Andre, Carlos, Frances

Andre, Desirae, Edgar

Andre, Desirae, Frances

Andre, Edgar, Frances

Bella, Carlos, Desirae

Bella, Carlos, Edgar

Bella, Carlos, Frances

Bella, Desirae, Edgar

Bella, Desirae, Frances

Bella, Edgar, Frances

Carlos, Desirae, Edgar

Carlos, Desirae, Frances

Carlos, Edgar, Frances

Desirae, Edgar, Frances

For each sample, we can compute the sample proportion of males by counting the number of males in the sample and dividing by 3. We can then list all the sample proportions of males and count how many times each value appears. The resulting distribution is the sampling distribution of the sample proportion of males.

To make it easier to visualize the distribution, we can create a frequency table and a bar graph. The frequency table lists all the distinct values of the sample proportion of males and their frequencies, while the bar graph shows the frequencies as bars of different heights.

The sample proportion of males' Frequency

0.00 - 1

0.33 - 8

0.67 - 8

1.00 - 3

    Frequency      

0     1     8     8     3

0.00  0.33  0.67  1.00

The sample proportion of males

The x-axis represents the possible values of the sample proportion of males, and the y-axis represents the frequency of each value. The bars are centered on the values 0.00, 0.33, 0.67, and 1.00, and their heights correspond to the frequencies of these values in the sampling distribution.

Therefore, the correct answer is the bar graph with bars centered on the values 0.00, 0.33, 0.67, and 1.00, which corresponds to option (d).

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The length of Jennifer's garden is 25 feet.

A rectangle is a geometric shape that has four sides and four right angles (90 degrees) with opposite sides being parallel and equal in length. It is a type of quadrilateral, a polygon with four sides. The length of the sides that are parallel to each other is called the base, and the length of the sides that are perpendicular to the base is called the height.

Let's suppose that the length of the garden is x feet.

We know that the width of the garden is 5 feet, so the total length of the edging required for the two widths is 2 x 5 = 10 feet.

The remaining edging is used for the two lengths of the garden, so we can write an equation based on the total length of the edging:

2(5 + x) = 60

Simplifying this equation, we get:

10 + 2x = 60

2x = 50

x = 25

Therefore, the length of Jennifer's garden is 25 feet.

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Answer:

Since the translation has shifted the point (8,1) to (9,2), we can determine the displacement vector between these two points as:

(9,2) - (8,1) = (1,1)

This vector represents the amount and direction of the translation. To find the image of the point (5,5) under the same translation, we need to add this vector to the coordinates of the point:

(5,5) + (1,1) = (6,6)

Therefore, the image of the point (5,5) under the same translation is (6,6).

Answer:

it's D

Step-by-step explanation:

hope this helps lol.....

calculated using the binomial coefficient:

6 choose 3 = 6! / (3! * (6-3)!) = 20 ways

The binomial coefficient can be used to compute the following:

7 select 2 is equal to 7 / (2! * (7-2)!) = 21 ways.

1. We simply need to take three steps down and three steps to the right in order to move from (-3,2) to (-1,-1) by doing so. It doesn't matter in whatever sequence we do these stages.

As a result, the number of ways to select 3 steps out of a total of 6 steps is the number of ways to travel from (-3,2) to (-1,-1). The binomial coefficient can be used to compute the following:

6 select 3 is equal to 6!/(3!*(6-3)!) = 20 ways.

2. We need to take 5 steps to the right and 2 steps up in order to move from (-1,-2) to (4,0) by simply moving up and to the right. It doesn't matter in whatever sequence we do these stages.

Hence, the variety of routes to and from The range of options for selecting 2 stages out of a total of 7 steps is from (-1,-2) to (4,0). The binomial coefficient can be used to compute the following:

7 select 2 is equal to 7 / (2! * (7-2)!) = 21 ways.

The number of possibilities to choose k things randomly from a set of n items is represented mathematically by the binomial coefficient. The formula: It is represented by the symbol "n pick k" or "C(n,k)" and can be calculated.

C(n,k) = n!/(k!*(n-k))!

where the factorial function is shown by "!" A non-negative integer's factorial is the sum of all positive integers that are less than or equal to that number. 5!, for instance, equals 5 x 4 x 3 x 2 x 1 = 120.

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The wall is 144 inches long that Lionel painted

Unit cοnversiοn is the prοcess οf cοnverting οne unit οf measurement tο anοther unit οf measurement that is equivalent tο the οriginal unit.

Given table:

Number οf feet's               Number οs inches

3                                         36

5                                         60

8                                         96

10                                       120

Tο cοnvert feet tο inches, we need tο multiply the number οf feet by 12 since there are 12 inches in οne fοοt.

Fοr 12 feet, we have:

12 feet = 12 x 12 inches = 144 inches

Hence, the answer is A. 144.

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If he agrees to pay back the loan in 8 yearly payments at 14% p.a. compound interest. The amount of each yearly payment is  K 368.51.

To calculate the amount of each yearly payment, we can use the formula for the present value of an annuity:

PV = A * [(1 - (1 + r)^-n) / r]

where:

PV = present value of the loan

A = annual payment

r = interest rate per year

n = number of years of the annuity

In this case, Mr. Apo Man borrowed K 2 000 from the bank at an interest rate of 14% p.a. compound interest, and agreed to pay back the loan in 8 yearly payments.

So, we have:

r = 14% = 0.14

n = 8

PV = K 2 000

We can solve for A by rearranging the formula:

A = PV * r / [(1 - (1 + r)^-n)]

Substituting the values, we get:

A = K 2 000 * 0.14 / [(1 - (1 + 0.14)^-8)]

A = K 2 000 * 0.14 / 0.7598

A = K 368.51

Therefore, the amount of each yearly payment that Mr. Apo Man needs to make to repay the loan in 8 years at 14% p.a. compound interest is K 368.51.

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Answer:

16.739

Step-by-step explanation:

[tex]15x < 65[/tex]

Solve for x to get

[tex]x < 4.33[/tex].

So 4.33 minutes could have passed if there are fewer than 90 cups on the table.

Answer:

x=10

Step-by-step explanation:

Answer:

300 dimes I believe because 3.00 is 100 dimes?

Step-by-step explanation:

Answer:

[tex]\huge\boxed{\sf 18^{-3}}[/tex]

Step-by-step explanation:

[tex]\displaystyle \frac{18^4}{18^7}[/tex]

So, the expression becomes:

= [tex]18 ^{4-7}[/tex]

= [tex]18^{-3}[/tex]

[tex]\rule[225]{225}{2}[/tex]

The account balance after 3 years of continuous compounding at 10% annual interest is $6,074.32.

To solve this problem, we can use the formula for continuous compounding, which is:

[tex]A = Pe^{(rt)[/tex]

where A is the account balance after t years, P is the principal amount invested, r is the annual interest rate expressed as a decimal, and e is the mathematical constant approximately equal to 2.71828.

In this problem, P = $4,500, r = 0.10, and t = 3. Substituting these values into the formula, we get:

[tex]A = 4500 * e^{(0.10 * 3)[/tex]

[tex]A = 4500 * e^{(0.30)[/tex]

A = 4500 * 1.34986

A = $6,074.32 (rounded to the nearest cent)

Therefore, the account balance after 3 years of continuous compounding at 10% annual interest is $6,074.32.

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The complete question is :

If $4500 is invested at 10% annual interest, which is compounded continuously, what is the account balance after 3 years, assuming no additional deposits or withdrawals are made?

After answering the presented question, we can conclude that Therefore, the interest paid would be $1504.

In mathematics, interest is the amount of money earned or payable on an original investment or loan. You can use either simple or compound interest. Simple interest is calculated as a percentage of the initial amount, whereas compound interest is calculated on the principal amount plus any previously earned interest. If you invest $100 at a 5% annual simple interest rate, you will get $5 in interest every year for three years, for a total of $15.

To calculate the amount of interest paid on a simple interest loan, we use the following formula:

Interest = Principal x Rate x Time

where:

Principal is the amount borrowed

Rate is the annual interest rate as a decimal

Time is the length of the loan in years

In this case, we have:

Principal = $4700

Rate = 0.08 (8% expressed as a decimal)

Time = 4 years

So, the interest paid on this loan would be:

Interest = $4700 x 0.08 x 4

Interest = $1504

Therefore, the amount of interest paid would be $1504.

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If Amy has 3 cups of salt and each batch of salt dough requires 1 cup of salt, then she can make:

3 batches = 3 cups of salt / 1 cup of salt per batch

So, Amy can make 3 batches of salt dough with the amount of salt she has.

Answer:

3 batches of salt dough

Step-by-step explanation:

Answer: 8^5

Step-by-step explanation:

To simplify this expression, we can use the rules of exponents which state that when we divide two exponential terms with the same base, we can subtract their exponents. So we have:

8⁶ ÷ 8 = 8^(6-1) = 8^5

Therefore, the simplified expression is 8^5.

If you clean the yards of 6 houses for $25 every month, you will earn $1,800.

$25/month * 6 houses = $150/month . If you continue earning $150 every month for a year (12 months), then your total earnings for the year will be: $150/month * 12 months = $1,800

Therefore, you will have approximately $1,800 by the end of the year if you clean the yards of roughly 6 houses for $25 every month. However, please note that this assumes that you will be able to consistently clean the yards of all 6 houses every month for the entire year.

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