Identify each part of the circle given it’s equation.

Identify Each Part Of The Circle Given Its Equation.

Answers

Answer 1

Each part of the circle given it’s equation should be identified as follows;

Center: (9, 4).Center: (-1, 1).Center: (-6, 0).Center: (2, -13).Center: (-7, -4).Radius: √28

What is the equation of a circle?

In Geometry, the standard or general form of the equation of a circle is modeled by this mathematical equation;

(x - h)² + (y - k)² = r²

Where:

h and k represent the coordinates at the center of a circle.r represent the radius of a circle.

Based on the information provided above, we have the following parameters:

Radius, r = √400 units.

Center, (h, k) = (9, 4).

By substituting the given radius and center into the equation of a circle, we have;

(x - h)² + (y - k)² = r²

(x - 9)² + (y - 4)² = (√400)²

(x - 9)² + (y - 4)² = 400.

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Related Questions

A plane leaves Singapore airport at 07:45 to fly to Sydney. The plane flies at an average speed of 757.2 km/h. The distance from Singapore to Sydney is 6310 km. The time in Sydney is 2 hours ahead of Singapore time. Calculate the local time when the plane arrives in Sydney. Give your answer in the form hours:minutes using the 24-hour clock.​

Answers

Answer:

18:19

Step-by-step explanion:
To solve this problem, we need to first calculate the time it takes for the plane to fly from Singapore to Sydney:

Time = Distance ÷ Speed

Time = 6310 km ÷ 757.2 km/h

Time ≈ 8.34 hours

This is the time it takes to fly from Singapore to Sydney in Singapore time. However, we need to convert this time to Sydney time, which is 2 hours ahead of Singapore time. Therefore, the local time when the plane arrives in Sydney is:

Time in Sydney = Singapore time + 2 hours + Flight time

Time in Sydney = 07:45 + 2 hours + 8.34 hours

Time in Sydney = 18:19

Therefore, the local time when the plane arrives in Sydney is 18:19 using the 24-hour clock.

A test is worth 80 points. multiple choice questions are worth2 points, and short- answer questions are worth 4 points. if the test has 25 questions, how many multiple- choice questions are there?a. the number of multiple choice questions times the number of short answer question is 25.b. the number of multiple choice questions plus the number of short answer question is 80.c. the number of multiple choice questions plus the number of short answer question is 25.d. the number of multiple choice questions minus the number of short answer question is 80.

Answers

if the test has 25 questions, the number of multiple choice questions plus the number of short answer questions is 25. The correct answer is c.

To explain, let x be the number of multiple choice questions and y be the number of short answer questions. We know that there are 25 questions in total, so x + y = 25.

We also know that each multiple choice question is worth 2 points, and each short answer question is worth 4 points. If we let M be the total number of points from the multiple choice questions, and S be the total number of points from the short answer questions, we can set up the equation:

M + S = 80

We can also express M and S in terms of x and y:

M = 2x
S = 4y

Substituting these equations into the first equation, we get:

2x + 4y = 80

Dividing both sides by 2:

x + 2y = 40

Now we have two equations with two variables:

x + y = 25
x + 2y = 40

Subtracting the first equation from the second, we get:

y = 15

Substituting this into the first equation, we get:

x + 15 = 25

x = 10

Therefore, there are 10 multiple choice questions on the test.

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The window in sandra's dining room is in the shape of a semi circle. the diameter of the window is 16 inches. how many square inches is the window.use 3.14 for π. round to the nearest tenth

Answers

The area of the semi-circular window in Sandra's dining room by rounding to nearest tenth is approximately 100.5 square inches.

To find the area of a semi-circle, we need to first calculate the area of a full circle and then divide it by 2. The formula for the area of a circle is

A = π * r²,  where A is the area and r is the radius.

Find the radius of the semi-circle: Since the diameter is 16 inches, the radius is half of that, which is 8 inchesCalculate the area of a full circle using the formula A = π * r². Substitute the values of π and r,
A = 3.14 * (8)²
A = 3.14 * 64
A = 200.96 square inches Divide the area of the full circle by 2 to find the area of the semi-circle:
Area of semi-circle = 200.96 / 2
Area of semi-circle = 100.48 square inches

Rounding to the nearest tenth, the area of the window in the shape of semi-circle in Sandra's dining room is approximately 100.5 square inches.

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Next Write the equation for a sphere centered at the point ( - 8,8, -9) and the point (9,-8, -1) is on the sphere. - Add Work Submit Question

Answers

The equation for the sphere centered at (-8, 8, -9) with radius [tex]\sqrt(689)[/tex] and passing through the point (9, -8, -1).

How to the equation for a sphere centered at the point?

The equation for a sphere with center (a, b, c) and radius r is given by:

[tex](x - a)^2 + (y - b)^2 + (z - c)^2 = r^2[/tex]

In this case, the center of the sphere is (-8, 8, -9) and the point (9, -8, -1) is on the sphere.

Let's plug these values into the equation and solve for the radius:

[tex](9 - (-8))^2 + (-8 - 8)^2 + (-1 - (-9))^2 = r^2[/tex]

[tex](17)^2 + (-16)^2 + (8)^2 = r^2[/tex]

[tex]r^2 = 689[/tex]

Now that we have the center and the radius, we can write the equation of the sphere as:

[tex](x + 8)^2 + (y - 8)^2 + (z + 9)^2 = 689[/tex]

This is the equation for the sphere centered at (-8, 8, -9) with radius [tex]\sqrt(689)[/tex] and passing through the point (9, -8, -1).

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Graph the logarithmic function that models the number of years, g(x), for the number of infected trees to reach a value of x.

Answers

Note that this graph only shows the behavior of the function for positive values of x, as the natural logarithm is not defined for x ≤ 0.

What is Function?

Function can be defined in which it relates an input to output.

To graph the function g(x) = ln(x)÷4, we can start by creating a table of values:

x g(x) = ln(x)÷4

1 0

2 0.173

10 0.575

100 0.921

1000 1.146

Next, we can plot these points on a coordinate plane and connect them to create a smooth curve:

Therefore, Note that this graph only shows the behavior of the function for positive values of x, as the natural logarithm is not defined for x ≤ 0.

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A small private airplane traveled 140 miles in the same amount of time it took a helicopter to travel 95 miles. The plane's average speed was 40 miles per hour faster than the helicopter's average speed. PART 1: Which equation could be used to calculate the average speed of each vehicle? A. 140 95 B. 95 x + 40 Y Y + 40 C. 140x = 95x + 40 D. 40. 235â

Answers

The equation that could be used to calculate the average speed of each vehicle is C. 140x = 95x + 40, where x represents the average speed of the helicopter in miles per hour and 140x represents the distance traveled by the small private airplane.

The equation that can be used to calculate the average speed of each vehicle is:

C. 140x = 95x + 40

Let's break it down:

'x' represents the average speed of the helicopter in miles per hour.140x represents the distance traveled by the airplane (140 miles) at its average speed.95x represents the distance traveled by the helicopter (95 miles) at its average speed.40 represents the additional speed (40 miles per hour) of the airplane compared to the helicopter.

Since the time taken by both vehicles is the same, the distances covered by each vehicle can be equated, giving us the equation 140x = 95x + 40.

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4. The number of milligrams of an antibiotic in a person's bloodstream, A(h), is


dependent on the number of hours elapsed since taking the antibiotic, h. George


took a 50-milligram dose of the antibiotic. One hour after taking the medicine, he had


25 milligrams of the antibiotic in his bloodstream. Two hours after taking the


medicine, he had 12. 5 milligrams of the antibiotic in his bloodstream. Which function


can be used to find the number of milligrams of antibiotic in George's bloodstream


after h hours?

Answers

The function that can be used to find the number of milligrams of antibiotic in George's bloodstream after h hours is A(h) = 50[tex](0.5)^h[/tex] . This is an exponential function where the initial dose of 50 milligrams is halved every hour.

The problem states that the number of milligrams of the antibiotic in a person's bloodstream is dependent on the number of hours elapsed since taking the antibiotic. We know that George took a 50-milligram dose of the antibiotic and had 25 milligrams of the antibiotic in his bloodstream one hour after taking it.

This means that half of the initial dose remained in his bloodstream after one hour. Similarly, after two hours, he had 12.5 milligrams of the antibiotic in his bloodstream, which means that half of the remaining dose from the first hour remained in his bloodstream.

Therefore, we can conclude that the number of milligrams of the antibiotic in his bloodstream is halved every hour.

Using this information, we can create an exponential function where A(h) represents the number of milligrams of the antibiotic in his bloodstream after h hours. The function is A(h) =  50[tex](0.5)^h[/tex] , where 50 is the initial dose and 0.5 is the halving factor.

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How do you use the definition of a derivative to find f' given f(x)=√4x+3 at x>-3/4?

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The derivative of f(x) is -3/4.

How to find derivative?

To find the derivative, use the definition of a derivative:

f'(x) = lim h→0 [f(x + h) - f(x)] / h

Substitute f(x) = √(4x + 3) into this definition:

f'(x) = lim h→0 [√(4(x + h) + 3) - √(4x + 3)] / h

Multiplying by the conjugate of the numerator:

f'(x) = lim h→0 [(√(4(x + h) + 3) - √(4x + 3)) * (√(4(x + h) + 3) + √(4x + 3))] / [h * (√(4(x + h) + 3) + √(4x + 3))]

Expanding the numerator, we get:

f'(x) = lim h→0 [(4(x + h) + 3) - (4x + 3)] / [h * (√(4(x + h) + 3) + √(4x + 3)) * (√(4(x + h) + 3) + √(4x + 3)))]

f'(x) = lim h→0 [4h] / [h * (√(4(x + h) + 3) + √(4x + 3)))]

Canceling out the h terms, we get:

f'(x) = lim h→0 4 / (√(4(x + h) + 3) + √(4x + 3)))

Now, we can evaluate the limit as h approaches 0:

f'(x) = 4 / (√(4x + 3) + √(4x + 3))

f'(x) = 4 / (2√(4x + 3))

f'(x) = 2 / √(4x + 3)

Therefore, the derivative of f(x) is -3/4.

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Elizabeth is considering buying a $30,000 car. Which of these financing options


will likely lead to the LOWEST monthly payment?



$3000 down payment, 6% interest, 84 months


$3000 down payment, 6% interest, 60 months


$0 down payment, 6% interest, 60 months


$0 down payment, 0% interest, 36 months

Answers

The financing option that will likely lead to the lowest monthly payment is:

$3000 down payment, 6% interest, 84 months

The longer loan term (84 months) will spread out the payments over a longer period of time, resulting in a lower monthly payment. The down payment will also help to reduce the monthly payment amount.

The 6% interest rate is relatively low, so it won't have a significant impact on the monthly payment compared to the loan term.

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Help asap will give 100 points and brainiest
what is the mean absolute deviation for doctor a’s data set on corrective lenses? what is the mean absolute deviation for doctor b’s data set on corrective lenses? write a sentence comparing the variation of the two data sets using their mean absolute deviations.

Answers

The mean absolute deviation for Doctor A's data set on corrective lenses is 0.42.The mean absolute deviation for Doctor B's data set on corrective lenses is 0.38.Doctor B's data set has a slightly smaller variation than Doctor A's data set, based on their mean absolute deviations.

What is the difference in mean absolute deviation for the corrective lenses data sets of Doctor A and Doctor B?

In statistical analysis, the mean absolute deviation (MAD) is a measure of the average distance between each data point and the mean of the data set. For Doctor A's data set on corrective lenses, the MAD is calculated as 0.42, while for Doctor B's data set, it is calculated as 0.38.

This shows that Doctor B's data set has a slightly smaller variation compared to Doctor A's data set.

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To assess the effect of piston ring type and oil type on piston ring wear, three types of piston ring and four types of oil were studied. Three replications of an experiment, in which the number of milligrams of material lost from the ring in four hours of running was measured, were carried out for each of the 12 combinations of oil type and piston ring type.


With oil type as the row effect and piston ring type as the column effect, the following sums of squares were observed: SSA = 1. 0926, SSB = 0. 9340, SSAB = 0. 2485, SSE = 1. 7034.


a) How many degrees of freedom are there for the effect of oil type?


b) How many degrees of freedom are there for the effect of piston ring type?


c) How many degrees of freedom are there for interactions?


d) How many degrees of freedom are there for error?


e) Construct an ANOVA table. You may give ranges for the P-values.


f) Is the additive model plausible? Provide the value of the test statistic and the P-value.


g) Is it plausible that the main effects of oil type are all equal to 0? Provide the value of the test statistic and the P-value.


h) Is it plausible that the main effects of piston ring type are all equal to 0? Provide the value of the test statistic and the P-value

Answers

The test statistic is large and the corresponding P-value is small, we reject the null hypothesis that the main effects of piston ring type are all equal to 0.

What is the degree of freedom for the effect?

a) The degree of freedom for the effect of oil type is 3 (number of levels of oil type minus 1).

b) The degrees of freedom for the effect of piston ring type is 2 (number of levels of piston ring type minus 1).

c) The degrees of freedom for interactions is (3-1) * (2-1) = 2 (product of the degrees of freedom for oil and piston ring types).

d) The degrees of freedom for error is (3 * 2 * 4) - (3 * 2) = 18 (total number of observations minus the number of treatments).

e) The ANOVA table is as follows:

Source Sum of Squares Degrees of Freedom Mean Square F-Statistic P-value

Oil 1.0926 3 0.3642 F1 P1

Piston Ring 0.9340 2 0.4670 F2 P2

Interaction 0.2485 2 0.1243 F3 P3

Error 1.7034 18 0.0946  

Total 3.9785 25  

Note: The F-statistics and P-values will need to be calculated using the appropriate formulas.

f) To test the plausibility of the additive model, we can compare the residual mean square from the ANOVA table to the mean square for error. If the residual mean square is much smaller than the mean square for error, this indicates that there may be additional sources of variation in the data that are not explained by the additive model. The test statistic for this is:

F = (mean square for error) / (residual mean square)

If the test statistic is large and the corresponding P-value is small, we reject the additive model.

g) To test the plausibility that the main effects of oil type are all equal to 0, we can use the F-test:

F1 = (mean square for oil type) / (mean square for error)

If the test statistic is large and the corresponding P-value is small, we reject the null hypothesis that the main effects of oil type are all equal to 0.

h) To test the plausibility that the main effects of piston ring type are all equal to 0, we can use the F-test:

F2 = (mean square for piston ring type) / (mean square for error)

If the test statistic is large and the corresponding P-value is small, we reject the null hypothesis that the main effects of piston ring type are all equal to 0.

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A cat darts around a room chasing a ball. The cat first travels along the vector <-1,2> and then chases the ball along the vector <2,-6>. The cat darts after the ball 1.5 times along the vector <4,3>. This is where the cat catches the ball and chews on it. What vector describes the cat’s final position? Show all your work.

Answers

The vector describing the cat's final position is <7,0.5>.

How to explain the vector

The cat first travels along the vector <-1,2> and then chases the ball along the vector <2,-6>. So the cat's position after these two movements is:

<-1,2> + <2,-6> = <1,-4>

The cat's position after this movement is:

1.5 * <4,3> = <6,4.5>

Finally, we add this vector to the cat's previous position to find its final position:

<1,-4> + <6,4.5> = <7,0.5>

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An open top box is made by cutting out 2 in by 2 in squares from the corners of a large square piece of cardboard. Using the picture as a guide, find an expression for the surface area of the box. If the surface area is 609 in², find the length of x. Remember, there is no top.

Answers

The length of the variable x, obtained from the formula for the surface area of a solid about 10.63 inches

What is the surface area of a solid object?

The surface area of a solid object is the area of the outside surface of the  object.

The dimensions of of the open top box with the square corners 2 in by 2 in cut from the corners are;

Length of the box, L = x - 4 inches

Width of the box, W = x - 4 inches

Height of the box, H = 2 inches

The surface area of the box is therefore;

Volume, A = L × W + 2 × L × H + 2 × W × H

Plugging in the expressions for the length, width and height of the box, the surface area = (x - 4) × (x - 4) + 2 × 2 × (x - 4) + 2 × 2 × (x - 4) = 9·x² - 40·x + 16

The surface area of the box, A = 9·x² - 40·x + 16

Second part;

When the surface area = 609 in², we get;

A = 609 = 9·x² - 40·x + 16

9·x² - 40·x + 16 - 609 = 9·x² - 40·x - 593 = 0

x = (20 + √(5737))/9 ≈ 10.63, and x = (20 - √(5737))/9 ≈ -6.19

The length x ≈ 10.63 inches

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Select the expressions that are equivalent to 3v+2v. A. V*5
B. V+5
C. V+5v
D. V+v+v+v+v

Answers

The expression that is equivalent to 3v+2v is:

D. v+v+v+v+v

How to write equivalent expressions?

Equivalent expressions are expressions that work the same even though they look different. If two algebraic expressions are equivalent, then the two expressions have the same value when we substitute the same value(s) for the variable(s).

To find the expressions that are equivalent to 3v+2v, we need to find the expression which when simplified will give the same expression as 3v+2v. That is: 3v + 2v = 5v

v*5 = 5v

v+5 = v + 5

v+5v = 6v

v+v+v+v+v = 5v

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Tight Knit is an online store that sells two different tiers of monthly subscription boxes with knitting supplies. Recently, the number of basic subscriptions has been decreasing by 5 each month, while the number of deluxe subscriptions has been increasing by 8 each month. This month, the company had 288 basic subscriptions and 93 deluxe subscriptions.
How many months will it take for the number of basic subscriptions to match the number of deluxe subscriptions?

Answers

It will take 15 months for the number of basic subscriptions to match the number of deluxe subscriptions.

Let's denote the number of months passed by "m".

In m months, the number of basic subscriptions will be 288 - 5m (since 5 basic subscriptions are decreasing each month), and the number of deluxe subscriptions will be 93 + 8m (since 8 deluxe subscriptions are increasing each month).

We want to find out when the number of basic subscriptions will match the number of deluxe subscriptions, so we can set the two expressions equal to each other:

288 - 5m = 93 + 8m

We can then solve for m:

288 - 93 = 8m + 5m

195 = 13m

m = 15

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Solve each system by substitution
Y=-2x+4
y=-3x+3

Answers

Answer: x = -1, y = 6

Step-by-step explanation:

lets substitute the value of y from the first equation into the y in the second equation.

-2x + 4 = -3x + 3

4 - 3 = -3x + 2x

1 = -1x

x = -1

we know from before that y = -2x + 4

so y = -2(-1) + 4

y = 6

Just explain how to do it with the answer please.

Answers

The measures of the angles JIK and JIL are 67 degrees and 157 degrees

Calculating the measures of the angles JIK and JIL?

From the question, we have the following parameters that can be used in our computation:

Tangent at point IDiameter = IKThe measure of IJ = 46 degrees

The inscribed angle opposite to the same arc is half of the external angle

Using the above as a guide, we have the following:

JIK = 90 - 46/2

JIK = 67 degrees

Also, we have

JIL = 90 + JIK

So, we have

JIL = 90 + 67

JIL = 157 degrees

Hence, the measure of the angle JIL is 157 degrees

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Write an inequality that models the solution for 3x+4. 5≤5(x-2)

Use the number pad and x to enter your answer in the box. ​

Answers

The evaluated inequality for the given question is x≥3, under the condition that  models the solution for 3x+4. 5≤5(x-2).

Then the given model for the solution for 3x+4. 5≤5(x-2), so we have to apply the principles of solving inequality

5 ≤ 5(x - 2)

5 ≤ 5x - 10

15 ≤ 5x

3 ≤ x

Then, the inequality that represents the given model is  x≥3.

Inequality refers to a relation that makes a non-equal comparison between two numbers or other mathematical expressions. It is used to compare the size or order of two values on the number line. There are different symbols to represent different kinds of inequalities.

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Bob and Anna are planning to meet for lunch at Sally's Restaurant, but they forgot to schedule a time. Bob and Anna are each going to randomly choose from either 1\text{ p. M. }1 p. M. 1, start text, space, p, point, m, point, end text, 2\text{ p. M. }2 p. M. 2, start text, space, p, point, m, point, end text, 3\text{ p. M. }3 p. M. 3, start text, space, p, point, m, point, end text, or 4\text{ p. M. }4 p. M. 4, start text, space, p, point, m, point, end text to show up at Sally's Restaurant. They must both choose exactly the same time in order to meet. Bob has a "buy one entree, get one entree free" coupon that he can only use if he meets up with Anna. If he successfully meets with Anna, Bob's lunch will cost him \$5$5dollar sign, 5. If they do not meet, Bob's lunch will cost him \$10$10dollar sign, 10. What is the expected cost of Bob's lunch?

Answers

The expected cost of Bob's lunch is $8.75.

To find the expected cost of Bob's lunch, we need to determine the probability that Bob and Anna will meet at Sally's Restaurant at the same time.

There are 4 possible times for Bob and Anna to choose from: 1 PM, 2 PM, 3 PM, and 4 PM. Since they are choosing randomly, the probability of them both choosing the same time is 1/4 (one out of four choices).

Now we can calculate the expected cost of Bob's lunch. If they meet successfully, Bob's lunch will cost $5. If they do not meet, Bob's lunch will cost $10. We can find the expected cost by multiplying the probability of each outcome by its corresponding cost, and then adding these products together.

Expected cost = (Probability of meeting) * (Cost if they meet) + (Probability of not meeting) * (Cost if they don't meet)

Expected cost = (1/4) * $5 + (3/4) * $10

Expected cost = $1.25 + $7.50

Expected cost = $8.75

The expected cost of Bob's lunch is $8.75.

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1. 20% of the items manufactured by a certain process are known to be defective. 18 items are chosen at random. a. how many would you expect to be defective? explain briefly what this means. b. find the probability that at least 4 are defective. give a numerical answer.

Answers

The expected number of defective items and the probability of at least 4 are defective is equal to 3.6 and 0.370 or 37.0%.

Total number of items 'n' = 18

Probability of an item being defective 'p' =20%

                                                                    = 0.2  

Expected number of defective items,

Use the formula for the expected value of a binomial distribution,

E(X) = np

where X is the number of defective items.

Plug in the values we have,

E(X) = 18 x 0.2

      = 3.6

Expect average items out of 18 to be defective = 3.6  .

Probability that at least 4 items are defective,

Calculate the probability of 4, 5, 6, ..., 18 defective items

Use the complement rule to simplify it,

P(at least 4 defective)

= 1 - P(less than 4 defective)

Using the CDF function,

'binomcdf' is the binomial cumulative distribution function.

18 is the number of trials,

0.2 is the probability of success,

And 3 is the maximum number of successes

P(less than 4 defective)

= binomcdf (18, 0.2, 3)

= P(X <= 3)

=[tex]\sum_{x=0}^{3}[/tex] ¹⁸Cₓ × (0.2)^x × (0.8)^(18-x)

= ¹⁸C₀× (0.2)^0 × (0.8)^(18-0) + ¹⁸C₁× (0.2)^1 × (0.8)^(18-1) + ¹⁸C₂× (0.2)^2 × (0.8)^(18-2) + ¹⁸C₃× (0.2)^3 × (0.8)^(18-3)

= (0.8)^(18) + 18× (0.2) × (0.8)^(17) + 153 × (0.04) × (0.8)^(16) + 1632× (0.008) × (0.8)^(15)

= 0.630

Plug in the values,

P(at least 4 defective)

= 1 - 0.630

= 0.370

Therefore, the expected items to be defective and probability that at least 4 items out of 18 are defective is equal to 3.6 and 0.370 or 37.0%.

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Adding cookie dough ice cream and hot fudge to the menu next month will cost 42 dollars if your total sales remain the same would you make a profit if so how much 

Answers

If total sales remain the same and assuming a $5 profit margin per order, adding cookie dough ice cream and hot fudge to the menu could result in a profit of $58 if 20 or more orders are sold.

To determine if adding cookie dough ice cream and hot fudge to the menu will result in a profit, we need to consider the cost and potential revenue. If the cost of adding these items is $42, we need to calculate how many orders of cookie dough ice cream with hot fudge we need to sell to cover that cost and make a profit.

Assuming the profit margin on each order of cookie dough ice cream with hot fudge is $5 (for example), we would need to sell at least 9 orders (rounding up from 8.4) to cover the $42 cost and break even. If we sell more than 9 orders, we would make a profit.

Assuming we sell 20 orders of cookie dough ice cream with hot fudge, the total revenue generated would be $100 ($5 profit per order x 20 orders). Subtracting the $42 cost of adding these items, the net profit would be $58.

Therefore, if total sales remain the same and assuming a $5 profit margin per order, adding cookie dough ice cream and hot fudge to the menu could result in a profit of $58 if 20 or more orders are sold.

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Find an equation of the plane with the given characteristics.
The plane contains the y-axis and makes an angle of r/4 with the positive x-axis.

Answers

The equation of the plane is -x(tan(r/4)) + z(sin(r/4)) = 1.

Let the equation of the plane be Ax + By + Cz = D. Since the plane contains the y-axis, we know that x = 0 when y = 0. Therefore, the equation becomes:

0A + 0B + Cz = D

=> Cz = D

This means that the plane is perpendicular to the y-axis and intersects the z-axis at z = D/C.

Now, we need to find the values of A, B, and C. Since the plane makes an angle of r/4 with the positive x-axis, we can use the direction cosines to find these values. The direction cosines of a vector are the cosines of the angles it makes with the x, y, and z axes.

Let the direction cosines of the vector perpendicular to the plane be (l, m, n). Then, we have:

cos(r/4) = l/√(l^2 + m^2 + n^2)

=> l = cos(r/4) / √2

cos(π/2) = m/√(l^2 + m^2 + n^2)

=> m = 0

cos(π/2) = n/√(l^2 + m^2 + n^2)

=> n = sin(r/4) / √2

Therefore, the vector perpendicular to the plane is:

(l, m, n) = (cos(r/4) / √2, 0, sin(r/4) / √2)

Since the plane contains the y-axis, we know that it is perpendicular to the vector (0, 1, 0). Therefore, the dot product of the two vectors is zero:

0A + B + 0C = 0

=> B = 0

Finally, we can use the fact that the vector (A, B, C) is perpendicular to the vector (cos(r/4) / √2, 0, sin(r/4) / √2) to find A and C:

A(cos(r/4) / √2) + 0 + C(sin(r/4) / √2) = 0

=> A = -C(tan(r/4) / √2)

Therefore, the equation of the plane is:

-C(tan(r/4) / √2)x + 0y + C(sin(r/4) / √2)z = D

Multiplying through by √2/C and setting D = √2, we get:

-x(tan(r/4)) + z(sin(r/4)) = 1

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naproxen 375 mg PO daily. If each scored tablet contains 250 mg,
how many tablets will you administer?

Answers

To administer a daily dose of 375 mg of naproxen using 250 mg scored tablets, the patient would need to take 1.5 tablets, rounded up to 2 tablets of 250 mg each.

To administer 375 mg of naproxen using 250 mg scored tablets, we need to divide 375 by 250 to determine how many tablets to administer.

375 mg / 250 mg per tablet = 1.5 tablets

Therefore, the dosage of 375 mg of naproxen would require 1.5 tablets.

Since tablets cannot be divided into halves, the patient would need to take 2 tablets of 250 mg each to achieve the prescribed dosage of 375 mg.

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Many hotel chains that offer free wi-fi service to their customers have experienced increasing demand for internet bandwidth and increasing costs. marriott international would like to test the hypothesis that the proportion of customers that are carrying two wi-fi devices exceeds 0.60. a random sample of 120 marriott customers found that 78 have two wi-fi devices. marriott international would like to set î± = 0.01. the p-value for this hypothesis test would be ________.

Answers

The p-value for this hypothesis test is approximately 0.1317.

To calculate the p-value for the hypothesis test, we need to perform a one-sample proportion test using the sample data provided.

Let's define the null and alternative hypotheses:

Null hypothesis (H₀): The proportion of Marriott customers carrying two Wi-Fi devices is equal to or less than 0.60.

Alternative hypothesis (H₁): The proportion of Marriott customers carrying two Wi-Fi devices exceeds 0.60.

Sample size (n) = 120

Number of customers with two Wi-Fi devices (x) = 78

To test the hypothesis, we can use the normal approximation to the binomial distribution since the sample size is reasonably large.

First, calculate the sample proportion:

[tex]\hat{p}[/tex] = x / n = 78 / 120 = 0.65

Next, calculate the test statistic (z-score):

z = [tex]\frac{\hat{p}-p_0}{\sqrt{\frac{p_0(1-p_0)}{n} } }[/tex]

= (0.65 - 0.60) / √((0.60 * (1 - 0.60)) / 120)

= 0.05 / √(0.24 / 120)

= 1.1180

Now, we can find the p-value corresponding to the calculated test statistic using a standard normal distribution table or a statistical calculator.

In this case, the p-value for a one-sided test (since we are testing if the proportion exceeds 0.60) is approximately 0.1317.

Therefore, the p-value for this hypothesis test is approximately 0.1317.

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Mary’s dog weighed 25 kg, but then it got sick and lost 2. 3 kg. A What percentage of body weight did the dog lose? B Mary weighs 58 kg. If Mary lost the same percentage of her body weight as what the dog did, how much would Mary weigh?

Answers

The percentage of body weight the dog lost is 9.2%. Mary would weigh 52.664 kg after losing the same percentage of body weight as her dog.

A) To find the percentage of body weight the dog lost, first, calculate the actual weight loss: 25 kg - 2.3 kg = 22.7 kg. Then, divide the weight loss (2.3 kg) by the original weight (25 kg) and multiply by 100 to get the percentage: (2.3 kg / 25 kg) * 100 = 9.2%.

B) If Mary lost the same percentage of her body weight as the dog did, she would lose 9.2% of her weight. To calculate this, multiply her original weight (58 kg) by the percentage (9.2%): 58 kg * 0.092 = 5.336 kg. Now, subtract this weight loss from her original weight to find her new weight: 58 kg - 5.336 kg = 52.664 kg. So, Mary would weigh 52.664 kg after losing the same percentage of body weight as her dog.

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A scale drawing of a rectangular park had a scale of 1 cm = 90 m.
What is the actual area of the park in meters squared?

Answers

The calculated value of the actual area of the park in meters squared is 8100x

What is the actual area of the park in meters squared?

From the question, we have the following parameters that can be used in our computation:

A scale drawing of a rectangular park had a scale of 1 cm = 90 m.

This means that

Scale factor = 90/1

Evaluate

Scale factor = 90

The actual area of the park in meters squared is calculated as

Area = Area of scale * Scale factor^2

Substitute the known values in the above equation, so, we have the following representation

Area = Area of scale * 90^2

Evaluate

Area = Area of scale * 8100

Let Area of scale = x

So, we have

Area = 8100x

Hence, the actual area of the park in meters squared is 8100x

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As survey found that women's heights are normally distributed with am mean 62.1 in. and standard deviation 2.9. the survey also found that men's heights are normally distributed with mean 67.8 and standard deviation 3.1 in. consider an executive jet that seats six with a doorway height of 55.8 in.
a) what percentage of adult men can fit through the door without bending?
b) does the door design with a height of 55.8 in. appear to be adequate? why didn't the engineers design a larger door?
a. the door design is​ inadequate, but because the jet is relatively small and seats only six​ people, a much higher door would require major changes in the design and cost of the​ jet, making a larger height not practical.
b. the door design is​ adequate, because although many men will not be able to fit without​ bending, most women will be able to fit without bending.​ thus, a larger door is not needed.
c. the door design is​ inadequate, because every person needs to be able to get into the aircraft without bending. there is no reason why this should not be implemented.
d. the door design is​ adequate, because the majority of people will be able to fit without bending.​ thus, a larger door is not needed.

Answers

a) The percentage of men with a height less than or equal to 55.8 inches is approximately 0.00007 or 0.007%.

b) The door design is inadequate, but because the jet is relatively small and seats only six people, a much higher door would require major changes in the design and cost of the jet, making a larger height not practical.

Option (a) is correct.

a) To determine the percentage of adult men who can fit through the door without bending, we need to find the proportion of men whose height is less than or equal to the doorway height of 55.8 inches. We can use the normal distribution formula and standardize the variable:

Z = (X - μ) / σ

Where X is the doorway height, μ is the mean height of men, and σ is the standard deviation of men's heights.

Z = (55.8 - 67.8) / 3.1 = -3.87

Using a standard normal distribution table, we can find that the percentage of men with a height less than or equal to 55.8 inches is approximately 0.00007 or 0.007%.

Therefore, only a very small percentage of adult men can fit through the door without bending.

b)The door design is inadequate, but because the jet is relatively small and seats only six people, a much higher door would require major changes in the design and cost of the jet, making a larger height not practical.

While it is true that most women will be able to fit through the door without bending, it is not acceptable to design a door that does not accommodate all potential passengers. The door should be designed to allow all passengers to enter without any discomfort or difficulty.

However, in the case of this executive jet, increasing the height of the door to accommodate all potential male passengers would require major redesign and cost implications.

In summary, while the current door design is inadequate, it may not be practical or feasible to make significant changes due to design and cost constraints.

Therefore, the correct option is a.

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a machine in a manufacturing plant has on the average two breakdowns per month. find the probability that during the next three months it has (a) at least five breakdowns, (b) at most eight breakdowns, (c) more than five breakdowns.

Answers

The probability that during the next three months it has;

(a) at least five breakdowns is 0.036.(b) at most eight breakdowns is 0.00085.(c) more than five breakdowns is 0.012.

Probability refers to potential. A random event's occurrence is the subject of this area of mathematics. The range of the value is 0 to 1. Mathematics has included probability to forecast the likelihood of certain events.

The degree to which something is likely to happen is basically what probability means. You will understand the potential outcomes for a random experiment using this fundamental theory of probability, which is also applied to the probability distribution.

The plant has on the average two breakdowns per month,

so the Poisson distribution is,

[tex]P(X=k) = \frac{e^{-\lambda} \lambda^k}{k!}[/tex]

where,

X is the random variable representing the number of events

λ is the average rate at which the events occur

k is the number of events that occur

a)  at least five breakdowns

[tex]P(X=k) = \frac{e^{-\lambda} \lambda^k}{k!}[/tex]

P(X =5) = [tex]\frac{e^{-2} 2^5}{5!}[/tex]

= 0.036

Thus, probability that at least five breakdowns in three months is 0.036.

b)  at most eight breakdowns

[tex]P(X=k) = \frac{e^{-\lambda} \lambda^k}{k!}[/tex]

[tex]P(X=8) = \frac{e^{-2} 2^8}{8!}[/tex]

= 0.00085.

Therefore, probability of at most eight breakdowns is 0.00085.

c) more than five breakdowns.

[tex]P(X=k) = \frac{e^{-\lambda} \lambda^k}{k!}[/tex]

P(X = 6) = [tex]\frac{e^{-2} 2^6}{6!}[/tex]

=0.012

Therefore, probability of more than five breakdowns is 0.012.

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Each phrase in the table describes two variables which are strongly correlated. select all phrases that imply correlation without causation.

the number of stuffed animals produced at a factory and the number of newborn babies
the number of hits by a baseball team in a game and the number of runs they score
the number of people at a store and the number of coupons given out
the amount of snow plows on the street and the amount of snowfall
the number of videos rented and the number of new films in theaters
the number of pets in a neighborhood and the amount of grass fields nearby

Answers

The phrases that imply correlation without causation are:

The number of stuffed animals produced at a factory and the number of newborn babies.The number of hits by a baseball team in a game and the number of runs they score.

The phrases that imply correlation without causation.The number of people at a store and the number of coupons given out.The number of videos rented and the number of new films in theaters.The number of pets in a neighborhood and the amount of grass fields nearby.

These correlations do not imply a causal relationship, meaning that an increase or decrease in one variable does not directly cause a corresponding change in the other variable.

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27. the value of a certain car can be modeled by the function
y = 18000(0.76)', where t is time in years. will the value of the function ever be 0?

Answers

The function given is y = 18000(0.76)^t, where y represents the value of the car and t represents the time in years.

This is an exponential decay function, meaning that the value of the car decreases over time. To determine if the value of the function will ever be 0, we would need to find if there exists a time t when y = 0. Let's analyze the function:

0 = 18000(0.76)^t

In an exponential decay function, the base (0.76 in this case) is between 0 and 1, so as time (t) increases, (0.76)^t will approach 0, but it will never actually reach 0. Thus, the value of the car will keep decreasing over time but will never be exactly 0.

In summary, the value of the function, which represents the car's value, will never be 0, but it will get infinitely close to 0 as time progresses. This is a characteristic of exponential decay functions, where the value never reaches 0 but approaches it as time goes on.

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