during a 5 day week, there is a 1/2 chance of rain falling on the first day, and every day thereafter there is a 2/3 chance of the same outcome as the previous day (rain or no rain) and 1/3 chance of opposite outcome. what is the probability that there are at least 3 days of rain?

x is the number of sucesses.

e = 2.71828 is the Euler number.

μ​ is the mean in the given interval.

The probability that a randomly selected region had exactly two hits is 0.1710.

In a Poisson distribution, the probability that X represents the number of successes of a random variable is given by the following formula:

P(x)= (μ^x * e^-μ)/x!​

Where

x is the number of sucesses

e = 2.71828 is the Euler number

μ is the mean in the given interval.

A total of 535 bombs hit the combined area of 574 regions. So the mean hits per region is:

P = 535/574 = 0.9321

Assume that we want to find the probability that a randomly selected region had exactly two hits (i.e P(x = 2)).

P(x) = (μ^x * e^-μ)/x!​

P(2) = (0.9321^2 * e^-(0.9321))/2!​

P(2) = 0.1710

Therefore, the probability that a randomly selected region had exactly two hits is 0.1710.

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Manuel purchased 1.75 pounds of corn kernels.

An equation is a mathematical statement that shows the equality between two expressions. The expressions on either side of the equals sign are called the left-hand side and the right-hand side of the equation. An equation can be written in many different forms, but the most common form is: Left-hand side = Right-hand side

In the given question,

Let's use x to represent the number of pounds of corn kernels Manuel purchased.

We know that Manuel bought 2.5 pounds of sunflower seeds, and that both the sunflower seeds and corn kernels cost $2.20 per pound.

The total amount Manuel spent on the sunflower seeds and corn kernels was $9.35, so we can write the equation: 2.2(2.5) + 2.2x = 9.35

Simplifying the left side of the equation, we get: 5.5 + 2.2x = 9.35

Subtracting 5.5 from both sides, we get: 2.2x = 3.85

Dividing both sides by 2.2, we get: x = 1.75

Therefore, Manuel purchased 1.75 pounds of corn kernels.

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Answer:

i hope this is what you are looking for

The population is all registered voters in Ohio, and the sample is the 50 registered voters from each county in Ohio that were randomly selected

In this case, the population refers to all registered voters in Ohio, as they are the total group being studied. The sample is the subset of the population that is being evaluated to represent the entire population. In this question, the sample is the 50 registered voters from each county in Ohio that were randomly selected for the public opinion poll.

This scenario is an example of statistical sampling, a technique used in statistics to analyze a subset of a population and extrapolate insights or findings to the entire population.

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Answer:

21

Step-by-step explanation:

Answer:7x+1

Step-by-step explanation:

1). Distribute: 9x-6-2x+7

2). Combine like terms: 9x+1-2x

3). Combine like terms: 7x+1

Answer:

( a + 2 ) ( a - 15 )

Step-by-step explanation:

a² - 13a - 30

a² + 2a - 15a - 30

( a² + 2a ) - ( 15a - 30 )

a ( a + 2 ) - 15( a + 2 )

( a + 2 ) ( a - 15 )

Step-by-step explanation:

To graph the function f(x) = 2sin(x)-2, we can start by plotting the y-intercept (0, -2).

Next, we can use the amplitude of 2 to mark the highest and lowest points of the graph. The highest point will be 2 units above the midline at y = 0, and the lowest point will be 2 units below the midline at y = -4.

To establish the period of the function, we need to identify the distance between one complete cycle of the graph. Since sine has a period of 2pi, we can see that the period of our function is also 2pi.

Starting from the y-intercept, we can mark a point on the graph that is one-quarter of the way through a cycle, at x = pi/2. The sine function will be at its maximum value of 1 at this point, so the graph will be at y = 0 + 2

Answer: There are 7 marbles in the bag and in the first attempt, all 7 marbles are there. After one marble is taken away, then we have 6 marbles to choose from. Therefore we will multiply 7*6 = 42.

Hence, there are 42 possible outcomes.

(a) The predictor variable is Fall in feet and the response variable is Duration in seconds.

(b) The slope is in seconds per foot.

(c) The slope may be negative, as greater drop heights generally result in longer travel times.

(a) The predictor variable in this regression is Drop, which represents the drop height of the roller coaster, in feet, in feet. The response variable is Duration, which represents the duration of the trip, in seconds, in seconds.

(b) The units of slope in this regression are seconds per foot. This means that for each unit of increase in descent height in feet, the travel time will increase or decrease the value of the slope, measured in seconds per foot.

(c) The slope can be negative, as greater drop heights generally result in longer ride times, and the Tower of Terror roller coaster, which was exceptionally short despite its large drop height, has were removed from the analysis.

Therefore, the remaining 90 roller coasters in the dataset likely exhibit a negative relationship between drop height and time, meaning that as drop height increases, ride time decreases .

The Low R-value squared 29.4% means that the relationship between roller coaster drop and ride time in the data set is highly variable, but the negative slope indicates a general downward trend.

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Answer:

I think 496

Step-by-step explanation:

Divide

Answer: 15 nickels, 63 dimes, 44 quarters

Step-by-step explanation:

x=number of nickels

4x+3=number of dimes

4x+3-19=number of quarters

Solve the following equation:

x+4x+3+4x+3-19=122

9x-13=122

x=15

Plug x back into the expressions:

Number of nickels=15

Number of dimes:

4(15)+3

63

Number of quarters:

4(15)+3-19

44

Answer:

The zeroes are -2 and 4.

Step-by-step explanation:

x^2 - 2x - 8 = 0

(x + 2)(x - 4) = 0

x + 2 = 0 or x - 4 = 0

x = -2, 4

The general form of the equation is ax^2 + bx + c = 0.

The sum of the zeroes should be equal to -b/a:-

-2 + 4 = 2

and -(-2)/1 = 2

Verified

The product of the zeroes should be c/a = -8:-

-2 * 4 = -8.

Verified.

The Surface area of Pyramid is equal to Option (B) [tex]72 m^2[/tex] when base is square and their are 4 triangles.  

The surface area of a pyramid is the total area of all its faces. The formula to calculate the surface area of a pyramid depends on the shape of its base.

To find the surface area of this pyramid we should add area of all 4 triangles and 1 square base.

Area of Base = 4m * 4m

                      = [tex]16m^2[/tex]

Area of Triangle = 1/2 *4* 7

                           = [tex]14m^2[/tex]

Surface Area of Pyramid = Area of Base + 4 * (Area of Triangle)

                                         = [tex]16m^2 + 4(14m^2)[/tex]

                                         = [tex]72 m^2[/tex]

Therefore, Surface area of Pyramid is equal to  [tex]72 m^2[/tex].

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As a result, the hotel has 208 single rooms and 112 double rooms. We can now use these two equations to find the values of x and y.

An equation in mathematics is a claim that two mathematical expressions are equivalent. In an equation, the two expressions on either side are separated by the equals sign (=). As in the following equation: 3x + 2 = 11 declares that the formula 11 is identical to the formula 3x + 2. Finding the value of x that causes the equation to be true is the first step towards solving this equation. By first removing 2 from both sides of the equation and then dividing by 3, we may find x in this situation: 3x + 2 - 2 = 11 - 2 (subtracting 2 from both sides) (subtracting 2 from both sides) .3x = 9 (simplifying the right side) (simplifying the right side) .

given

Assume that there are x single rooms and y double rooms at the hotel.

We may create an equation since we are aware that there are 320 rooms in the hotel overall:

x + y = 320 (Equation 1) (Equation 1)

We can create another equation based on sales since we also know the prices for each type of accommodation and the overall sales:

40x + 65y = 15,600 (Equation 2) (Equation 2)

We can now solve for x and y using these two equations. To accomplish this, one method is to solve for x in Equation 1 and replace it in Equation 2:

x + y = 320

x = 320 - y

Equation 2 using x = 320 - y as a replacement:

12,800 - 40y + 65y = 15,600

25y = 2,800 y = 112

40x + 65y = 15,600

40(320 - y) + 65y

= 15,600

There are 112 double rooms in the hotel. In order to determine the number of single rooms, we can reenter this value into Equation 1 as follows:

x + y = 320

x + 112 = 320

x = 208

As a result, the hotel has 208 single rooms and 112 double rooms. We can now use these two equations to find the values of x and y.

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By multiplication, 500 times 500 is 250,000 using distributive property.

Multiplication is an arithmetic operation that combines two or more quantities into a single quantity. The result of multiplication is called the product. Multiplication is usually represented by the symbol "×" or "*".

For example, the product of 3 and 4 is 12, which is written as 3 × 4 = 12 or 3 * 4 = 12. In general, to multiply two numbers a and b, we write a × b or a * b, and the result is the product of the two numbers.

Multiplication is also distributive over addition, which means that a × (b + c) = (a × b) + (a × c) for any values of a, b, and c.

We are given :

500 × 500

Using distributive property

500 × 500 = 5 × 100 × 5 × 100  

                   = (5 × 5) × (100  × 100)

                   = (25) × (10000)

                   = 250,000

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You would need to make a 94 on the next quiz to have a mean quiz score of 90.

If 90 is the desired mean, then you have to multiply it by the number of quizzes

5 x 90 = 450 is the total in the 5 quizzes.

Now, add the scores of the first four quizzes.

88 + 95 + 93 + 80 = 356

Then, take the amount of the 5 quizzes and subtract it from the amount of the total 4 quizzes.

450 - 356 = 94

Answer:

answer: 7

Step-by-step explanation:

u have to find the median by finding the middle of all of those numbers which will me seven

The probability that the component survives 200 hours is approximately 0.9802. The probability that a component, which is functioning after 200 hours, is still functioning after 400 hours, is approximately 0.8703.

What is probability?

Probability is a numerical representation of the likelihood or chance of a specific event occurring. It is typically expressed as a value between 0 and 1, with 0 indicating that the event is impossible and 1 indicating that the event is certain to occur.

To determine the probability that the component survives 200 hours, we need to calculate the survival function, which is the probability that the component lasts longer than 200 hours. We can use the formula:

[tex]$$ S(t) = e^{-\int_0^t z(u) du} $$[/tex]

where [tex]$S(t)$[/tex] is the survival function and [tex]$\int_0^t z(u) du$[/tex] is the integral of the failure rate from 0 to [tex]$t$[/tex].

In this case, the failure rate is [tex]$z(t) = 2.0\times10^{-6}t/\text{hour}$[/tex] for [tex]$t > 0$[/tex]. Integrating this from 0 to 200 gives:

[tex]$$ \int_0^{200} z(t) dt = \int_0^{200} (2.0\times10^{-6}t) dt =[/tex] [tex]\left[\frac{(2.0\times10^{-6})}{2}t^2\right]_0^{200} = 0.02 $$[/tex]

Substituting this into the survival function formula gives:

[tex]$$ S(200) = e^{-\int_0^{200} z(t) dt} = e^{-0.02} \approx 0.9802 $$[/tex]

Therefore, the probability that the component survives 200 hours is approximately 0.9802.

To determine the probability that a component, which is functioning after 200 hours, is still functioning after 400 hours, we need to use the conditional probability formula:

[tex]$ P(T > 400|T > 200) = \frac{P(T > 400 \cap T > 200)}{P(T > 200)} $$[/tex]

We can calculate the numerator using the survival function:

[tex]$ P(T > 400 \cap T > 200) = S(400) $$[/tex]

To find [tex]$S(400)$[/tex], we need to integrate the failure rate from 0 to 400:

[tex]$$ \int_0^{400} z(t) dt = \int_0^{400} (2.0\times10^{-6}t) dt = \left[\frac{(2.0\times10^{-6})}{2}t^2\right]_0^{400} = 0.16 $$[/tex]

Substituting this into the survival function formula gives:

[tex]$$ S(400) = e^{-\int_0^{400} z(t) dt} = e^{-0.16} \approx 0.8534 $$[/tex]

To find the denominator, we can use the survival function we found earlier:

[tex]$ P(T > 200) = S(200) = e^{-0.02} \approx 0.9802 $$[/tex]

Substituting these values into the conditional probability formula gives:

[tex]$ P(T > 400|T > 200) = \frac{S(400)}{S(200)} \approx \frac{0.8534}{0.9802} \approx 0.8703 $$[/tex]

Therefore, the probability that a component, which is functioning after 200 hours, is still functioning after 400 hours, is approximately 0.8703.

1) The probability that the component survives 200 hours is approximately 0.9802.

2) The probability that a component, which is functioning after 200 hours, is still functioning after 400 hours, is approximately 0.8703.

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Complete question:

1. A component with time to failure [tex]$\mathbf{T}$[/tex]  has failure rate[tex]$z(t)=2.0*10^{-6}$[/tex]t/hour for [tex]$t \ge 0$[/tex]

1) Determine the probability that the component survives 200 hours

2) Determine the probability that a component, which is functioning after 200 hours, is still functioning after 400 hours Note that the failure rate in this problem is not constant, but a function of time [tex]${\mathbf{}}t$[/tex].

2. Consider a computer system called [tex]$3\mathrm{P2M}$[/tex]  in the following figure. The system consists of three processors and two shared memories communicating over a shared bus, as shown in the following Figure. The [tex]$3\mathrm{P2M}$[/tex] system is operational as long as at least two processors can communicate with at least one of the two memories over the bus. a) Construct the fault tree model of this system b) Find all the minimal cut sets c) Assume all the components fail exponentially with the following failure rates: processors (P1, P2, P3): 0.0001/hour; memories (M1, M2): 0.0001/hour; bus: 0.000001 /hour. Find the system reliability at mission time [tex]$t=100$[/tex] hours.

Answer:

A) 0

Step-by-step explanation:

1.5+(-1 x (.5 + .25)) / .5

1.5+(-1 x .75) / .5

1.5 + -0.75 / .5    Because of order of operations division comes first

1.5 + (-1.5)

1.5 - 1.5

0

If we randomly choose three books, then the probability that the three we  choose will consist of each of their favorite books is 0.000081.

The total number of books is = 43 books.

Now, 3 books have to be selected.

So, the number of ways of choosing 3 different books from the 43 books can be calculated as : ⁴³C₃ = 12341,

The number of ways that those 3 get their favourite book is = ³C₃ = 1.

The probability that 3 you choose will consist of each of their favorite books is = 1/12341

= 8.103×10⁻⁵,

= 0.000081

Therefore, the required probability is 0.000081.

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Both of the two triangles are similar by SSS similarity postulate.

Similar triangles are defined as triangles that have the same shape, but their sizes may vary. This means that, if two triangles are similar, then we can say that their corresponding angles are congruent and corresponding sides are in equal proportion.

Looking at the 2 given triangles, we can see the ratio if corresponding sides as:

39/13 = 3

39/13 = 3

21/7 = 3

Since the ratios of the corresponding sides of both triangles are the same, then they are both Similar by SSS similarity postulate.

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Answer:

answer is 2 into 2 into twenty three

Step-by-step explanation:

2×2×23

√2^2×23

2√23

Answer: The square root of 92 is approximately 9.59166304663. Rounding this to the nearest tenth gives 9.6. Therefore, the square root of 92 rounded to the nearest tenth is 9.6.

Step-by-step explanation:

Answer: 5

Step-by-step explanation:

If Cather added the ages of a crowd of both 18-year-olds and 22-year-olds and got 290, we can write that as 18x+22y=290. Knowing that there were 10 18-year-olds, we can plug 10 in for x.

18 times 10 + 22y = 290

So, first, we should multiply.

18 times 10 is 180, leaving us with 180+22y=290

Next, we should subtract both sides by 180.

So, 22y=110

Finally, we need to divide both sides by 22.

Leaving us with the answer of 5.

Answer:

5

Step-by-step explanation:

10×18=180

290-180=110

110/22=5

The y -intercept of the parabola y = x^2 + 2x + 10 is (0, 10)

the y-intercept represents the value of y when x=0. In the equation y = x^2 + 2x + 10, the x^2 and 2x terms create a parabola that opens upwards. As x approaches infinity or negative infinity, the value of y also increases towards infinity.

The y-intercept of a graph is the point at which the graph crosses the y-axis, which is where x=0. To find the y-intercept of the parabola y = x^2 + 2x + 10, we substitute x=0 into the equation, which gives

y = 0^2 + 2(0) + 10

y = 10

Therefore, the y-intercept of the parabola is (0, 10), which means the graph crosses the y-axis at the point (0, 10).

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The given question is incomplete, the complete question is:

Find the y -intercept of the parabola y = x^2 + 2x + 10

To get from 1.098 to 1,098,000, Brian would need to multiply by 1,000,000 that is 10 raised to the power 6.

Powers of 10 are used in scientific notation to indicate extremely big or extremely tiny quantities. A number is written as the result of a coefficient (a number between 1 and 10) and a power of 10 when it is expressed in scientific notation. The number represented by the power of 10 is the distance the decimal point must be moved to convert a number to standard form (i.e., a number without exponents).

To get from 1.098 to 1,098,000, Brian would need to multiply by 1,000,000 that is 10 raised to 6.

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AD = 23.2 (opposite side of parallelogram are equal) and ∠D = ∠B = 188 (opposite angles are equal).

Parallelograms' characteristics

From the properties of parallelogram:

AD = BC (opposite side of parallelogram are equal)

x + 21 = 12x - 1

12x - 2x = 21 + 1

10x = 22

x = 2.2

AD = x + 21 = 2.2 + 21 = 23.2

Now,

∠A + ∠D = 180° (co interior angles are supplementary)

y - 9 + y/2 = 180

2y - 18 + y = 360

y = 360 + 18

y = 378

∠D = y/2 = 378/2 = 188

∠D = ∠B = 188 (opposite angles are equal).

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Answer: The area of the rectangular prism would be S.A. = 66m²

Step-by-step explanation: :)

What is the surface area of this rectangular prism?

A rectangular prism is a three-dimensional shape that has two at the top and bottom and four are lateral faces. The surface area of this rectangular prism = l x b

We have given

4 rectangles with area

A₁ = 3m × 4m  = 12 m²

2 rectangles with area

A₂ = 3m × 3m = 9 m²

Therefore the Surface Area of the rectangular prism is:

S.A. = 4A₁ + 2A₂

S.A. = 4(12) + 2(9)

= 48 + 18

= 66

Hence, the net surface area of the rectangular prism would be 66 meters sq.

is a pineapple

Step-by-step explanation:this is becuase you should work it out youself you silly goose

Answer:

circle is not a function.

Step-by-step explanation:

there are certain rules to define a mapping as function, one of them is function should not have more than 1 value at a given x.

for illustration purpose consider the below diagram,

as you can see in the given circle at x = 2, there are two different values of y, therefore equation of circle doesn't qualify as a function. half circle can be defined as a function (by restricting the range to only positive or negative values).

Hopefully you found the answer helpful

a) Note that the distribution of piles would be:

Person A gets Pile 5

Person B gets Pile 1

Person A gets Pile 3

Person B gets Pile 4

Person A gets Pile 2.

b) No, in this situation each person did not get their fair share.

If the taking turns procedure is such that Person A chooses first and then they alternate turns, then the following would be the distribution of piles:

So the distribution of piles would be:

b) No, in this situation each person did not get their fair share if the criterion for fairness is defined as each person receiving an equal share of the piles.

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Full Question:

Although part of your question is missing, you might be referring to this full question: See attached image.