PLEASEEE HELPPPPPP THIS IS DUE SOON

Answer:

x=10

Step-by-step explanation:

30-10=20

20/2=10

2(10)+10=30

Answer:

x=10

Don’t hold me up on this but, I think this is the answer.

Answer:

Step-by-step explanation:

If you like my answer than please mark me brainliest thanks

The value x in the formula represents the value of each observation of the data-set.

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Answer: 79%

Step-by-step explanation:

min —> 30 mins because half an hour is 30 mins.

(1 - 0.5)^30 = .214638..

1 - .214638 = .78536

round that to the closest percent equals 79%

Step-by-step explanation:

9. 131+106+67+x=360

237+67+x=360

304+x=360

x=56

10. 90+90+146+w=360

180+146+w=360

326+w=360

w=34

The task is to construct an 80% confidence interval for the mean noise level at manufacturing plants based on the given data.

Step 1: Calculate the sample mean. The sample mean is obtained by summing up all the values and dividing by the total number of observations. In this case, the sum of the noise levels is 115 + 149 + 143 + 105 + 136 + 157 + 111 = 916. Dividing this by 7 (the number of observations), we get a sample mean of 916/7 ≈ 130.9 (rounded to one decimal place).

Step 2: Calculate the sample standard deviation. The sample standard deviation measures the spread of the data points around the mean. To calculate it, we use the formula that involves subtracting the mean from each data point, squaring the result, summing all the squared differences, dividing by the total number of observations minus 1, and finally taking the square root. For the given data, the sample standard deviation is approximately 22.8 (rounded to one decimal place).

Step 3: Find the critical value. The critical value corresponds to the desired confidence level and the sample size. Since the confidence level is 80% and the sample size is 7, we need to find the critical value from a t-distribution table. The critical value for an 80% confidence interval with 6 degrees of freedom is approximately 1.943 (rounded to three decimal places).

Step 4: Construct the confidence interval. Using the sample mean, the sample standard deviation, and the critical value, we can construct the confidence interval. The formula for a confidence interval is "sample mean ± (critical value * (sample standard deviation / √(sample size)))". Plugging in the values, we get 130.9 ± (1.943 * (22.8 / √(7))). Evaluating this expression, the 80% confidence interval for the mean noise level at such locations is approximately 103.2 to 158.6 (rounded to one decimal place).

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Answer:

C

Step-by-step explanation:

70.5 times 3.14 is equal to 221.37 so Ferris Wheel was incorrect

Answer:

12 gallons per hour

Step-by-step explanation:

Given the following :

Start time of flight = 9:30 a.m

Arrival time of flight = 1:45p.m

Gallons of gas used during duration of flight = 51 gallons

Number of hours spent during flight:

Arrival time - start time

1:45 pm - 9:30 am = 4hours and 15minutes

4hours 15minutes = 4.25hours

If 4.25hours requires 51 gallons of gas;

Then 1 hour will require ( 51 / 4.25)gallons

= 51 / 4.25

= 12 gallons

Step-by-step explanation:

Variable relationships are analyzed to understand correlation. Correlation coefficient and regression analysis are used for analysis.

Variable connections are examined to figure out the relationship between's at least two factors. A positive relationship exists when the two factors increment or lessening together, while a negative relationship exists when one variable increments while the other variable declines. A connection coefficient is a usually utilized factual measure to survey the strength and bearing of the connection between factors.

Other measurable strategies, for example, relapse examination can be utilized to show and anticipate the connection between factors. Dissecting variable connections is vital to grasp the way of behaving of perplexing frameworks and can illuminate dynamic in different fields.

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The component of a linear programming model that is NOT listed is "Decision variables."

A linear programming model consists of several components that work together to optimize a given objective while considering various constraints. The components of a linear programming model include:

Constraints: These are the limitations or restrictions that define the feasible set of solutions. Constraints restrict the values that decision variables can take.

Objective Function: This function represents the goal or objective of the linear programming problem. It is either minimized or maximized based on specific criteria.

Feasible Region: Also known as the feasible set or feasible solution space, this refers to the collection of all points that satisfy each constraint in the linear programming problem. It represents the set of possible solutions that meet all the given constraints.

However, "Decision variables" is not a component of a linear programming model but rather the unknowns or variables that we want to determine in order to optimize the objective function.

Decision variables are not a component of a linear programming model. The components of a linear programming model include constraints, objective function, and feasible region. The feasible region refers to the collection of all points that satisfy each constraint in the linear programming problem.

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Approximately 304,657,600 Americans were there in July 2009 based on the estimated 2008 growth rate of 0.88%.

To find the approximate US population in July 2009, we need to apply the growth rate of 0.88% to the initial population in July 2008.

Convert the growth rate from percentage to decimal:

0.88% = 0.0088
Calculate the number of people added to the population in 2008: 302,000,000 * 0.0088 = 2,657,600
Add this number to the initial population to find the population in July 2009:

302,000,000 + 2,657,600 = 304,657,600.

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To prevent a trademark from becoming generic, companies often utilize it as an adjective to describe the product category it belongs to, as seen with examples like Jell-O Brand Gelatin.

Trademarks are valuable assets for companies as they distinguish their products or services from those of competitors. However, if a trademark becomes generic, it loses its distinctiveness and legal protection. When a trademark becomes a common name for a particular product or service, it is no longer associated exclusively with a specific brand.

To prevent this from happening, companies may use their trademarked name as an adjective to describe the category or type of product it represents. For instance, Jell-O is a well-known brand for gelatin, and the company uses the term "Jell-O Brand Gelatin" to emphasize that Jell-O is a specific brand within the gelatin category.

By using the trademark as an adjective, companies aim to reinforce the connection between their brand and the product category while maintaining the distinctiveness and exclusivity of their trademark. This practice helps protect the trademark's strength and prevents it from becoming a generic term that any company can use, thus preserving its legal protection and brand identity.

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The airplane is flying 94.8 feet above the farmhouse.

The formula for finding the height of an object from a given angle of elevation is:

Height = tan(angle of elevation) * Distance

In this case, we have two angles of elevation and two distances. We can solve for the height of the airplane by first calculating the distance from the observer to the top of the farmhouse. We can do this by using the same formula, but substituting in the angle of elevation of the farmhouse and the known distance between the observer and the farmhouse:

Distance to farmhouse = tan(24°) * 50 feet

Distance to farmhouse = 43.6 feet

Once we have the distance to the farmhouse, we can use the same formula to calculate the height of the airplane above the farmhouse. This time, we substitute in the angle of elevation of the airplane and the distance to the farmhouse:

Height of airplane = tan(70°) * 43.6 feet

Height of airplane = 94.8 feet

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We have drawn scatter diagram and given an example of a data point that affects the appropriateness of using a linear regression model and  of a school that is cost effective and rated highly by parents.

The scatter diagram plots two sets of numerical data, one on each axis, to see if there is a link between them. The points will fall along a line or curve if the variables are correlated.

We are using graphing calculator to show the points to make scatter diagram

If a linear model is adequate, the histogram should be about normal, and the residuals scatterplot should have random scatter. The linear model is not adequate if we detect a curved connection in the residual plot.

Parents can help with events and activities at school, as well as communicate with instructors. They can also be active at home in a variety of ways, including as assisting their children with homework and other obligations, and engaging in talks about educational principles and attitudes.

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Answer:

Today: Friday, 30 October 2020

Hour: 14.49 WIB (in Indonesia)

________________________

3 (2x - 7) + 1/3 (7x + 2)

= 6x - 21 + 7x/3 + 2/3

= 6x + 7x/3 + 2/3 - 21

= 25x - 61/3

Answer:

y = 8·√3

Step-by-step explanation:

From the drawing of the right triangle, we have;

The length of the opposite leg to the given 60° (reference) angle = 12

The length of the adjacent leg to given 60° (reference) angle = x

The length of the hypotenuse side = y

By trigonometric ratios, we have;

\(sin(Reference \, Angle) = \dfrac{Opposite \ leg \ length}{Hypotenuse \ length}\)

Therefore, we have;

\(sin(60^\circ) = \dfrac{12}{y}\)

From the value of sin(60°), we have;

\(sin(60^\circ) = \dfrac{\sqrt{3} }{2}\)

\(\therefore y= \dfrac{12}{sin(60^\circ) } = \dfrac{12}{\dfrac{\sqrt{3} }{2} } = \dfrac{2 \times 12 \times \sqrt{3} }{{{3} } } = \dfrac{24 \times \sqrt{3} }{{{3} } } = 8 \cdot \sqrt{3}\)

y = 8·√3

\(\left(x= \dfrac{12}{tan(60^\circ) } = \dfrac{12}{{\sqrt{3} } } = 4\cdot \sqrt{3} \right)\)

The maximum amount you can earn is $540

a. y = 13.50x , 10 <= x <= 40
b. x = 10, y = 135; x = 20, y= 270; x = 30, y = 405; x = 40, y = 540
c. Domain: 10 <= x <= 40; Range: 0 <= y <= 540
d. The minimum amount you can earn in a week with this job is $135. The maximum amount you can earn is $540.

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Total stockholders’ equity 7,800,000

Statement of stockholders’ equity for CC for the year ended December 31, 2012:Particulars Amount ($)
Common Stock 100,000

Additional Paid-in Capital 4,100,000
Retained Earnings (Opening Balance) 3,000,000
Add: Net Income for the year ended December 31, 2012 800,000
Total retained earnings 3,800,000

Less: Cash Dividend Declared on July 1 and paid on July 31 (200,000)
Retained earnings (Closing balance) 3,600,000
Total stockholders’ equity 7,800,000

Explanation:The given information is as follows:Common Stock on January 1, 2012 = $100,000Additional Paid-in Capital on January 1, 2012 = $4,100,000

Retained Earnings on January 1, 2012 = $3,000,000Net Income for the year ended December 31, 2012 = $800,000Cash Dividend Declared on July 1 and paid on July 31 = $200,000

To prepare the statement of stockholders’ equity for the year ended December 31, 2012, we will begin by preparing the opening balances of each of the equity accounts. We will then add the net income to the retained earnings account.

The closing balance for retained earnings is then computed by subtracting the cash dividend declared and paid from the total retained earnings. Finally, the total stockholders' equity is calculated by adding the balances of all the equity accounts.

Calculations:Opening balance of common stock = $100,000

Opening balance of additional paid-in capital = $4,100,000

Opening balance of retained earnings = $3,000,000

Net Income for the year ended December 31, 2012 = $800,000

Retained earnings (Opening Balance) = $3,000,000

Add: Net Income for the year ended December 31, 2012 = $800,000

Total retained earnings = $3,800,000Less: Cash Dividend Declared on July 1 and paid on July 31 = $200,000Retained earnings (Closing balance) = $3,600,000

Total stockholders’ equity = Common Stock + Additional Paid-in Capital + Retained Earnings (Closing balance) = $100,000 + $4,100,000 + $3,600,000 = $7,800,000

Therefore, the statement of stockholders’ equity for CC for the year ended December 31, 2012, is as follows:Particulars Amount ($)
Common Stock 100,000
Additional Paid-in Capital 4,100,000

Retained Earnings (Opening Balance) 3,000,000
Add: Net Income for the year ended December 31, 2012 800,000
Total retained earnings 3,800,000

Less: Cash Dividend Declared on July 1 and paid on July 31 (200,000)
Retained earnings (Closing balance) 3,600,000
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For the given values of the arithmetic sequence d = -2 , a₂₁ = 18,then the value of a₁ = 58.

As given in the question,

Given values of the arithmetic sequence :

Common difference 'd' = -2

Twenty first term a₂₁ = 18

Formula for the nth term of arithmetic sequence with common difference 'd' and first term a₁ is given by:

aₙ = a₁ + (n -1) d

Substitute the value n =21 , a₂₁ =18 and d = -2 in the above equation we get,

⇒a₂₁ = a₁ + (21 -1)(-2)

⇒18 = a₁ + 20(-2)

⇒ a₁ = 18 +40

⇒a₁ = 58

Therefore, for the given values of the arithmetic sequence d = -2 ,

a₂₁ = 18,then the value of a₁ = 58.

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Answer:

Slope is -2.

Step-by-step explanation:

Slope m = \(\frac{-1 - 7}{3 - -1}=\frac{-8}{4}=-2\)

According to the figure the value of x and y are

x =  25.4

y = 12.3

Using intersecting secant theorem we have that

Solving for x

8 * (8 + 11) = 5 * ( 5 + x)

8 * (19) = 25 + 5x

152 = 25 + 5x

152 - 25 = 5x

5x = 127

x = 25.4

Solving for y (secant and tangent)

8 * (8 + 11) = y^2

y^2 = 152

y = sqrt (152)

y = 12.3

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Answer:

about $84.47

Step-by-step explanation:

6.5%=0.65

129.95x0.65=84.4675

                    =84.47

Answer:

5 81/100

Step-by-step explanation:

Answer:

5.81 in fraction form is 581/100.

Step-by-step explanation:

Address input parameters & values.

Input parameters & values: The decimal number = 5.81

Write it as a fraction

5.81/1

Multiply 100 to both numerator & denominator

(5.81 x 100)/(1 x 100) = 581/100

It can be written as 581% = 581/100 or 581/100

To simplify 581/100 to its lowest terms, find LCM (Least Common Multiple) for 581 & 100.

1 is the LCM for 581 & 100

As LCM is 1, the fraction can't be factorized further

The width of the rectangle is: 20 ft

The length of the rectangle is: 28 feet

Algebraic word problems are problems that require you to convert a sentence into an equation and solve that equation. The equations that need to be written contain only basic arithmetic. and a single variable. In a real-life scenario, variables usually represent unknown quantities.

The formula for the Perimeter of a rectangle is:

Perimeter = 2(Length + Width)

We are told that the length of a rectangle is 8feet longer than the width. Thus:

Length = w + 8

Thus:

2(w + 8 + w) = 96

2(2w + 8) = 96

2w + 8 = 48

2w = 40

w = 20 feet

Length = 28 feet

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Third quartile Q₃ of the given data is 11

correct option is: b

What is the 75th percentile value?

0.675

For instance, the median represents the 50th percentile, the first quartile represents the 25th percentile, and the third quartile represents the 75th percentile.

What exactly is Q3?

Q3, the third quartile, is known as the 'upper quartile,' and represents the 75th percentile, which means that only 25% of the values in the set are greater than this value.

given data:

7,14,8,10,7,8,9,7,14,6.

In ascending, order data is 6,7,7,7,8,8,9,10,14,14.

number of terms N = 10

therefore, third quartile Q₃ = \(\frac{3}{4} (n + 1)\)

Q₃ = \(\frac{3}{4} (10 + 1)\)

Q₃ = 8.25th term

Q₃ = 8th term + 0.25 = 11

therefore, therefore, third quartile Q₃ of the given data is 10

correct option is: b

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