helppppppppppppppppppp pls

The sample size that would be required for the width of 99% is 2653.

The number of subjects involved in a sample size is referred to as the sample size in market research. A set of people chosen from the general community who are thought to be a representative sample size for that particular study is referred to as the sample size.

The following details are given:

Margin of error, E = 0.025; Significance Level, = 0.01

The proportion p is estimated to be p = 0.53.

The significance level with a critical value of 0.01 is 2.58.

The smallest sample size needed to estimate the population proportion p within the necessary margin of error is determined using the formula shown below:

n >= p*(1-p)*(zc/E)2 n = 0.53 *(1 - 0.53*)2 n = 2652.97 *(1-p)*(2.58/0.025)2

As a result, we determine that n = 2653 is the minimal sample size needed to satisfy the criteria that

n >= 2652.97 and that it must be an integer value.

Sample size is 2653.

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we add up the two sides we have

then, the perimeter is the sum of all sides, therefore we subtract the above expression

thats the expression, letter B

The number of child tickets sold is 99.

A system having more than two equations is known as a system of equations.

Given that, the cost of a child ticket and the cost of an adult ticket are $5.60 and $9.50 respectively.

Let the number of child tickets sold and the number of adult tickets sold be s and a, then

s + a = 170

a = 170 - s

The total cost of s child tickets and a adult tickets is:

5.6s + 9.5a = 1228.90

Substitute a= 170 -s into the above equation:

5.6s + 9.5(170 - s) = 1228.90

5.6s + 1615 - 9.5s = 1228.90

3.9s = 386.1

s = 99

Hence, the number of child tickets sold is 99.

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By quadratic formula, the roots of the quadratic function 2 · x² - 2 · x + 5 = 0 are two conjugated complex numbers: x₁ = 0.5 + i 1.5 and x₂ = 0.5 - i 1.5, respectively.

Let be a quadratic function of the form a · x² + b · x + c = 0, whose roots can be found by means of the following formula:

\(x = \frac{-b \pm \sqrt{b^{2}-4\cdot a\cdot c}}{2\cdot a}\)     (1)

Where a, b, c are the coefficients of the quadratic function.

In we know that 2 · x² - 2 · x + 5 = 0, then the roots of the polynomial are, respectively:

\(x_{1} = \frac{2 + \sqrt{(-2)^{2}-4\cdot (2)\cdot (5)}}{2\cdot (2)}\)

\(x_{1} = \frac{2 + \sqrt{4-40}}{4}\)

x₁ = 0.5 + i 1.5

\(x_{2} = \frac{2 - \sqrt{(-2)^{2}-4\cdot (2)\cdot (5)}}{2\cdot (2)}\)

\(x_{2} = \frac{2 - \sqrt{4-40}}{4}\)

x₂ = 0.5 - i 1.5

By quadratic formula, the roots of the quadratic function 2 · x² - 2 · x + 5 = 0 are two conjugated complex numbers: x₁ = 0.5 + i 1.5 and x₂ = 0.5 - i 1.5, respectively.

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Answer:

Step-by-step explanation:

yes it is a function

Answer:

\(\approx 2\ miles\)

Step-by-step explanation:

Difference of 10 seconds between the lightning flash and its thunder clap.

Given that the speed of light is infinite.

So, lightning will be seen at the same time it happens.

10 seconds is the time taken by the sound to reach to the person.

Time taken = 10 seconds

Speed of sound = 1080 ft/sec

To find:

Distance from lightning flash in miles.

Solution:

First of all, let us a have a look at the formula:

\(Distance = Speed \times Time\)

Putting the given values:

Distance = \(1080\times 10 = 108000\ feet\)

5280 feet = 1 mile

1 feet = \(\frac{1}{5280}\) miles

10800 feet = \(\frac{1}{5280}\times 10800 \approx 2\ miles\)

Answer:

the answer is 101 !!!

There's isn't nothing strange your just over thinking it!

Answer:

$16

Step-by-step explanation:

$24 - $8 = $16

Answer:

$ 16

Step-by-step explanation:

$ 24 - $ 8 = $ 16

We will get that the angle theta is:

θ = β/2

Remember that the sum of the interior angles of any triangle must be equal to 180°.

Now, looking at the triangle in the left, we can see that the top angle is equal to:

180 - 2α

The right angle is equal to:

180 - 2β

And the left angle is α

Then we can write:

α + (180 - 2α) + (180 - 2β) = 180

-α - 2β = -180

α = 180 - 2β

Now we can go to the other triangle, where theta is, and write:

α + β + 2θ = 180

Replacing what we found above, we get:

180 - 2β + β + 2θ = 180

-β + 2θ = 0

θ = β/2

That is the best simplification we can get with the given diagram.

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To evaluate the integral, we will substitute the given values into the integral expression and perform the necessary calculations.

Replace the variable x with the given values in the integral expression:

∫[8, 8] x^3 dx

Evaluate the integral using the power rule for integration:

∫[8, 8] x^3 dx = [1/4 x^4] evaluated from 8 to 8

Substitute the upper and lower limits into the evaluated expression:

[1/4 (8)^4] - [1/4 (8)^4]

Simplify the expression:

(1/4) * 4096 - (1/4) * 4096

Perform the arithmetic:

1024 - 1024 = 0

The integral evaluates to 0.

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Answer:

  58 mph

Step-by-step explanation:

Let s represent the speed of the slower train. Then the distance apart is ...

  distance = speed × time

  s(5) +(s +11)(5) = 635

  10s = 580 . . . . subtract 55

  s = 58 . . . . . . .  divide by 10

The slower train's rate is 58 miles per hour.

The student should stand at 2L/9 you will see it tip over so as to weigh of 60kg.

Due to the fact that mass is the quantity of matter contained in an item and does not change with gravity, mass is always the same. As long as the amount of matter in an object doesn't change, its mass will remain constant. In contrast, an object's weight refers to the force of gravity acting on it.

No matter where you are in the cosmos, you have the same mass since mass is a measurement of how much matter is in an object. But because weight measures the force between an object and the body it is resting on, it fluctuates (whether that body is the Earth, the Moon, Mars, et cetera).

Given : A mass of student 40 kg

length is represented by l

Position of the pivot point from the board = l/3

The student should stand at 2L/9 you will see it tip over so as to weigh of 60kg.

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The hypothesis is that the percentage of white and pink beans in the container is equal. To test this, a random sample can be taken and the percentages of white and pink beans in the sample can be compared.

We can formulate the following hypothesis for the percentage of white versus pink beans:

Hypothesis: The percentage of white beans in the container is equal to the percentage of pink beans.

This hypothesis assumes that the container is well-mixed, and that there is no difference in weight, size or shape between the white and pink beans that would affect their distribution. We can test this hypothesis by taking a random sample of beans from the container, and counting the number of white versus pink beans in the sample.

If the percentages of white and pink beans in the sample are similar, then we can accept the hypothesis. However, if there is a significant difference in the percentages, we would reject the hypothesis and assume that the container is not well-mixed or that there is a difference in the weight or size of the beans.

In summary, the hypothesis for the percentage of white versus pink beans in the container is that the percentages of white and pink beans are equal. This hypothesis can be tested by taking a random sample of beans and comparing the percentages of white versus pink beans in the sample.

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Answer:

x=7

Step-by-step explanation:

Triangle proportionality theorem is used for finding the length of the missing side of the triangle .

For example , let's take a question to solve.

We have to find the value of x, in the given dig.

If DEbar || BCbar , then AD/DB = AE/EC

The lines QR¯¯¯¯¯  and  ST¯¯¯¯¯ are parallel.

Therefore, by the Triangle Proportionality Theorem,

PS/QS=PT/RT

Substitute the values and solve for x .

6/2=9/x

Cross multiply.

6x=18

Divide both sides by 6 .

6x/6=18/6x=3

The value of x is 3 .

Therefore , the missing side of the triangle is 3

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Answer:

Area would be 110

Answer:

60%

Step-by-step explanation:

Answer:

78.1 feet

Step-by-step explanation:

I’m assuming the diagonal is inside the rectangle. Thus we can use Pythagoras theorem to solve it.

a² + b² = c²

A is 50 and b is 60 so just sub in the values.

√(50² + 60²) = c

C is roughly 78.1 when rounded to two decimal places

(b) 734.0 ft-lbs of work is done.

To find the work done by the force, we need to use the formula:

Work = force x distance x cos(θ)

where:

force = 56 pounds (the given constant force)

distance = 16 feet (the distance the door is being pulled)

θ = 35 degrees (the angle between the force and the displacement of the door)

We need to convert the angle to radians to use it in the formula:

theta = 35 degrees x (pi/180) = 0.6109 radians

Now we can substitute the values into the formula:

Work = 56 pounds x 16 feet x cos(0.6109 radians)

Work = 734.0 ft-lbs (rounded to one decimal place)

Therefore, the answer is (b) 734.0 ft-lbs.

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Answer:

f(3) = 1

Step-by-step explanation:

To find f(3), plug in 3 as x and simplify the expression:

f(x) = 2x - 5

f(3) = 2(3) - 5

f(3) = 6 - 5

f(3) = 1

So, f(3) = 1

The function f(x) to proceed further.

What is function f(x) dx?

The think you might have a typo in your question, as some parts are unclear. However, based on the provided terms, I'll try to address a related problem. Please provide a corrected question if my interpretation is not what you intended.

Given a function f(x) and the statement:

lim (x -> 3) (f(x) - 5) = 5, find the value of the integral ∫f(x) dx from 1 to 100.

To solve this problem, we first need to find the function f(x) from the provided limit statement.

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Answer:

can I have a cause for me and I can do that the next day or

Answer:

169.0909...°

Step-by-step explanation:

[(n - 2)180]/n =

= [(33 - 2)180]/33

= 169.0909...°

Answer:

10.90909091

Step-by-step explanation:

you divide 360 by the amount of vertices

Answer:

i think its z%/67

Step-by-step explanation:

becuase if you add it up it is 68 but if you sub on it its ether 67 or 63

The operation that Amjed should perform to determine the relative frequency of a person over 30 years old who prefers to ride a mountain bike is given as follows:

2) Divide 25 by 462.

The parameters that are needed to calculate a probability are listed as follows:

Then the probability is calculated as the division of the number of desired outcomes by the number of total outcomes, hence it is the same as a relative frequency.

The total number of people is given as follows:

58 + 164 + 215 + 25 = 462.

Out of these people, 25 prefer mountain bike, hence the relative frequency is given as follows:

25/462.

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The constant of proportionality is: k = 0.45

The equation is: p = 0.45w.

The equation that models the proportional relationship between two variables, x and y, can be expressed in slope-intercept form as y = kx, here, the value of k is the constant of proportionality between the two variables x and y.

Thus, constant of proportionality, k = y/x.

In the table given, we can use the coordinates of one point, (3, 1.35), to find the constant of proportionality, k:

Constant of proportionality, k = 1.35/3

Constant of proportionality, k = 0.45

To write the equation of the relationship between weight (w) and price (p), substitute k = 0.45 into p = kw.

p = 0.45w

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Answer:

0.19 50% 15/20 9/10 95%

Step-by-step explanation:

I know

Answer:

y= \(\frac{-1}{24}\)x - \(\frac{3}{4}\)

Step-by-step explanation:

(4,-1),(6,1): two points

-1(1)/4(6): find slope

slope: \(\frac{-1}{24}\)

write in point-slope form: y+1=\(\frac{-1}{24}\)(x-6)

y= \(\frac{-1}{24}\)x - \(\frac{3}{4}\)

(0.042 / 1.01) + 49.6e^(-t / 100) (in ounces)

The given equation can be solved with the help of the concept of differential equations.

Step 1: To find the rate of change of salt in the tank, we should start with finding the rate of change of salt concentration. The rate of change of salt concentration can be found using the given equation as follows:(dS / dt) = 1.4(1.5sin(t)) - (C(t) / V(t))(dS / dt) = 1.4(1.5sin(t)) - (S(t) / V(t)) x (2 / V(t))(dS / dt) = 1.4(1.5sin(t)) - (S(t) / V(t)) x (2 / 100)

Step 2: To find the rate of change of volume, we can use the fact that the volume remains constant. Hence,(dV / dt) = 0

Step 3: Now, we can use the relation between the amount of salt and the concentration of salt.(dS / dt) = (C(t) / V(t))(dV / dt) + (2 / 100) x 1.4(1.5sin(t))(dS / dt) = 0 + 0.042sin(t) - (S(t) / 100)(dS / dt) + (S(t) / 100) x (2 / 100)The resulting equation is given by:(dS / dt) = 0.042sin(t) - (S(t) / 100) + (S(t) / 5000)

Step 4: The above equation is a linear first-order differential equation. We can solve this using the integrating factor method. Let the integrating factor be e^(t / 100).Multiplying both sides of the equation with the integrating factor and simplifying, we get(e^(t / 100))(dS / dt) + (1 / 100)e^(t / 100)S(t) = 0.042e^(t / 100)The left-hand side of the equation can be written in the form(d / dt)(e^(t / 100)S(t)) = 0.042e^(t / 100) Therefore, e^(t / 100)S(t) = (0.042 / 1.01)e^(t / 100) + c where c is the constant of integration. At t = 0, the amount of salt is 50 ounces.Therefore,50 = (0.042 / 1.01) + c(c = 50 - 0.042 / 1.01 = 49.6)Therefore, e^(t / 100)S(t) = (0.042 / 1.01)e^(t / 100) + 49.6S(t) = (0.042 / 1.01) + 49.6e^(-t / 100)The long-time behavior of the solution is given bye^(-t / 100)S(t) -> 0as t -> infinity. Therefore, the solution approaches a limit, and there are no oscillations. The amount of salt in the tank at any time t is given by S(t) = (0.042 / 1.01) + 49.6e^(-t / 100) (in ounces)

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