A helicopter hovers 1150 feet above a small island. The figure shows that the angle of depression from the helicopter to point P is 39° How far off the coast to the nearest foot is island?

If A is proper "nonempty-subset" of "connected-space" X, then boundary of A, is nonempty because every point in A is either interior or exterior point.

In order to prove that if A is proper "nonempty-subset" of "connected-space" X, then boundary of A, which is denoted Bd(A), is nonempty, we proof this by contradiction.

We assume that A is proper "nonempty-subset" of "connected-space" X, and suppose, that Bd(A) is empty,

Since Bd(A) is set of all "boundary-points" of A, the assumption that Bd(A) is empty implies that there are no "boundary-points" in A,

If there are no "boundary-points" in A, it means that "every-point" in A is either an "interior" or "exterior-point" of A,

Consider the sets U = A ∪ X' and V = X\A, where X' represents the set of exterior points of A. Both U and V are open sets since A is a proper nonempty subset of X.

U and V are disjoint sets that cover X, i.e., X = U ∪ V,

Since X is a connected space, the only way for X to be written as a union of two nonempty disjoint open sets is if one of them is empty. Both U and V are nonempty since A is proper and nonempty.

So, the assumption that Bd(A) is empty leads to a contradiction with the connectedness of X.

Thus, Bd(A) must be nonempty when A is a proper nonempty subset of a connected space X.

By contradiction, we have shown that if A is a proper nonempty subset of a connected space X, then the boundary of A, Bd(A), is nonempty.

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The given question is incomplete, the complete question is

Prove that if A is a proper nonempty subset of a connected space X, then Bd(A) ≠Φ.

The randomized min-cut algorithm, such as the Karger's algorithm, is an iterative algorithm that repeatedly contracts edges in a graph until only two nodes (or a small number of nodes) remain. At that point, the remaining edges represent a cut in the graph.

In each iteration of the algorithm, an edge is chosen uniformly at random to be contracted. This contraction merges the two nodes connected by the chosen edge into a single super-node. The process continues until only two nodes remain, representing the cut in the graph.

To analyze the algorithm, let's consider a graph with n vertices. At each iteration, the number of vertices decreases by one since two vertices are merged into one. Therefore, after k iterations, there are n - k vertices remaining in the graph.

Now, let's consider the number of distinct cuts that can be formed by the remaining vertices. For n vertices, the total number of possible cuts is [tex]2^(n-1)[/tex]since each vertex can be on one side of the cut or the other. However, some of these cuts may be identical because the order in which the vertices are contracted can change the representation of the cut.

To see why, suppose we have a set of vertices A and a set of vertices B. The order in which the vertices are contracted can result in different representations of the cut. For example, if we contract vertex A before vertex B, the cut might be represented as (A, B). However, if we contract vertex B before vertex A, the cut might be represented as (B, A). Both cuts are essentially the same, but the order of the vertices determines the representation.

Since there are (n-1) edges that need to be contracted to reach the final cut of two vertices, there are (n-1)! possible orders in which the vertices can be contracted. However, each order produces the same cut, so we need to divide by (n-1)! to account for the different representations.

Therefore, the number of distinct cuts that can be formed by the remaining vertices is [tex]2^(n-1)[/tex]/ (n-1)!. Simplifying this expression, we get:

[tex]2^(n-1) / (n-1)! = n(n-1)(n-2)...(2)(1) / (n-1)(n-2)...(2)(1) = n[/tex]

So, there can be at most n distinct min-cut sets in the graph.

In summary, using the analysis of the randomized min-cut algorithm, we can argue that there can be at most n(n - 1)/2 distinct min-cut sets.

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Answer:

The Pythagorean Theorem is helpful for two-dimensional navigation.   You can use it along with two lengths to calculate the shortest path. The lengths north and west will be the triangle's two wings, and the diagonal will be the shortest line separating them.  The same principles can be used for air navigation. He is best known in the modern day for the Pythagorean Theorem, a mathematical formula which states that the square of the hypotenuse of a right triangle is equal to the sum of the squares on the other two sides.

- Hope this helps! :)

Answer: B. (2,1)

Step-by-step explanation:

its not c because if you look at R you see that it is going 4,3 not 3,4 because when you doing ratios on a number line it goes x-axis then y-axis next not y-axis then the x-axis.

It's not D because if you look at Q you see that it is going 3,5 not 5,3 because when you doing ratios on a number line it goes x-axis then y-axis next not y-axis then x-axis.

That's the same thing for A so your answer is b.

Answer:

B.......................

Answer: - 17 C

Step-by-step explanation: 7 - 8 is negative 1 and twice as much of 8 is 16. -1 minus 16 is negative 17 (-17).

Answer:

Step-by-step explanation:

Yes.  Substituting 0.5 for v in 2.28 = 4.56v yields 2.28 = 2.28.

Sherri has 35 apps on her phone and Bill has 64 apps on his phone.

Let's represent Sherri’s apps with x.

Then, the number of Bill's apps will be x+29 (since he has 29 more apps than Sherri).

Their total number of apps is 99.Thus, the mathematical equation is:x + (x+29) = 99

Simplifying this equation gives:2x + 29 = 99

Subtracting 29 from both sides of the equation gives:2x = 70

Dividing both sides by 2 gives:x = 35

This means Sherri has 35 apps on her phone.

Substituting that into x+29 gives:35+29 = 64

Therefore, Bill has 64 apps on his phone.

Hence, each person has Sherri has 35 apps on her phone and Bill has 64 apps on his phone. The total number of apps between the two of them is 99 apps.

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Answer:

B 100

Step-by-step explanation:

A straight line is measure to 180°. n+80=180

Answer:

option B (100)

Step-by-step explanation:

Answer: 220 miles

Step-by-step explanation:

Car goes 55 miles in 1 hour.  

Constant speed.  

Formula is 55t = d.  

55 x 4 = 220 miles

Answer:

the guy above is right

Step-by-step explanation:

The set (A U B) O (AUC) is {1, 2, 3, 6, 7, 8, 10}.

The following steps can be used to find the set (A U B) O (AUC):

Step 1: Find A U B {1, 2, 3, 7} U {1, 3, 10} = {1, 2, 3, 7, 10}

Step 2: Find (A U B) U C({1, 2, 3, 7, 10} U {1, 2, 3, 6, 8}) = {1, 2, 3, 6, 7, 8, 10}

A set is a group of things. The objects (or elements) that make up a set are often listed within curly brackets, and sets are typically identified by a letter. It's important to keep in mind that a set is an unordered collection of objects, meaning that it doesn't matter what order the elements are listed in. are viewed as being equivalent.

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The response to your graduate student's objection of taking multiple samples from each animal cannot increase statistical power is:

You should respond by saying that taking multiple samples from each animal is a well-known strategy for increasing statistical power.

In addition, increasing the number of observations per group improves the statistical test's accuracy and reliability.

The statistical test that one would use in this instance is the One-way ANOVA, or one-factor ANOVA.

A statistical test that can be used in this instance is the One-way ANOVA, or one-factor ANOVA.

This statistical test is a method used to determine if the average or mean of a numerical variable varies significantly between two or more groups of interest.

For this statistical test, it is best to use multiple samples to increase statistical power.

In addition, ANOVA is used to compare three or more sets of data for statistical significance by testing for variances.

ANOVA's null hypothesis is that all populations are equal, while the alternative hypothesis is that at least one population is different from the others.

The response to your graduate student's objection of taking multiple samples from each animal cannot increase statistical power is:

You should respond by saying that taking multiple samples from each animal is a well-known strategy for increasing statistical power.

In addition, increasing the number of observations per group improves the statistical test's accuracy and reliability.

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Answer:

I think the most upright answer would be D

Step-by-step explanation:

To oppose the traffic rules, the function g must satisfy |g(x)| > 1. The maximum velocity of the vehicles is Umax = 0. Finally, the value of g(1,1) is 0 based on the given initial condition.

a) For the function g to oppose the traffic rules, it must satisfy the condition |g(x)| > 1. In other words, the absolute value of g must be greater than 1. This condition indicates that the function represents a vehicle moving in the opposite direction of traffic flow.

b) To determine the maximum velocity of the vehicles (Umax), we can analyze the equation -dg/dt + (1-g^2)dg/dx = 0. By setting dg/dx = 0, we can find the critical points where the velocity is maximum. In this case, when g = ±1, the term (1-g^2) reaches its maximum value of 0. Therefore, the maximum velocity of the vehicles is Umax = 0.

c) Given the initial condition g(x,0) = 1 - x, we can find the value of g(1,1) by substituting x = 1 into the function. Thus, g(1,1) = 1 - 1 = 0. Therefore, the value of g(1,1) is 0.

In summary, to oppose the traffic rules, the function g must satisfy |g(x)| > 1. The maximum velocity of the vehicles is Umax = 0. Finally, the value of g(1,1) is 0 based on the given initial condition.

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Answer:

NL = 4.33

NM = 5

Step-by-step explanation:

tan 60° = NL/2.5

tan 60° = 1.7321

so:

1.7321 = NL/2.5

NL = (2.5)(1.7321)

NL = 4.33

cos 60° = 2.5/NM

cos 60° = 0.5

so:

0.5 = 2.5.NM

NM = 2.5/0.5

NM = 5

I think the answer would be B. The range is then total price of the tickets purchased and includes all whole numbers from 1 to 4.

Answer:

20%

Step-by-step explanation:

Answer:

20%

Step-by-step explanation:

0.206896552 rounded to the nearest tenth is 0.2 (The 0 in the hundredths place rounds down)

To find 0.2 as a percentage simply multiply it by 100

0.2*100=20%

Answer:

[tex]A=2513.27\ cm^2[/tex]

Step-by-step explanation:

The radius of semicircle window, r = 40 cm

The area of semicircle is given by :

[tex]A=\dfrac{\pi r^2}{2}[/tex]

Substitute all the values in the above formula.

[tex]A=\dfrac{\pi \times 40^2}{2}\\\\A=2513.27\ cm^2[/tex]

So, the area of the window is equal to [tex]2513.27\ cm^2[/tex].

A is not equal to B because they have different initial strings. A contains strings composed of 'a', while B contains strings composed of 'b'.

Let's consider the following example:

A = {a, aa}

B = {b, bb}

In this case, A* represents the Kleene closure (or Kleene star) of language A, which includes all possible concatenations and repetitions of strings in A, including the empty string ε. So A* would be {ε, a, aa, aaa, ...}.

Similarly, B* would be {ε, b, bb, bbb, ...}.

In this example, we can see that A* is equal to B* because both languages contain strings of varying lengths formed by repeating their respective symbols (a and b).

To summarize:

A* = {ε, a, aa, aaa, ...}

B* = {ε, b, bb, bbb, ...}

A != B

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Step-by-step explanation:

Given radius, r = 5,

Circumference of Circle, C

[tex] = 2\pi \: r \\ = 2\pi(5) \\ = 10\pi \: units[/tex]

Answer:

[tex]10\pi[/tex]

Step-by-step explanation:

As the hint below says:

[tex]C = 2\pi r[/tex]

We also know that

r = 5

So thus:

[tex]C = 2 \pi \cdot 5 = 10\pi[/tex]

Answer:6

1/3

Step-by-step explanation:

Answer:

364.8/ 243.2

Step-by-step explanation:

ope this helps :b

The presence of xo in A with the end goal that 1/|A| ∫ f(x)dx = f(xo). This finishes the confirmation.

To demonstrate the presence of a point xo in A to such an extent that 1/|A| ∫ f(x)dx = f(xo), where A will be an associated and minimized Jordan district with |A| > 0 and ƒ: A → R is a nonstop capability, we can involve the Mean Worth Hypothesis for Integrals.

In the first place, we should characterize a capability F: A → R as F(t) = 1/|A| ∫ f(x)dx - f(t), where t is a point in A. We need to show that there exists xo in A to such an extent that F(xo) = 0.

Since A will be an associated and minimal Jordan locale, it is likewise a shut and limited subset of R^n. Subsequently, A will be a smaller set. We realize that consistent capabilities on minimized sets accomplish their greatest and least qualities.

Since F is a consistent capability on the minimized set A, it accomplishes its most extreme and least qualities. Let M = max{F(t) : t in A} and m = min{F(t) : t in A}.

We have two cases to consider:

Case 1: In the event that M ≤ 0 and m ≥ 0, F(t) = 0 for all t in A, including xo. For this situation, we have demonstrated the presence of xo to such an extent that 1/|A| ∫ f(x)dx = f(xo).

Case 2: If either M > 0 or m < 0, we accept without loss of over-simplification that M > 0. Since M is the greatest worth of F on A, there exists a point t1 in A with the end goal that F(t1) = M. Essentially, we expect to be that m < 0, and there exists a point t2 in A with the end goal that F(t2) = m.

Consider the consistent way γ(t) from t1 to t2 in A. Since An is associated, such a way exists. Presently, characterize another capability G: [0, 1] → R as G(s) = F(γ(s)).

We have G(0) = F(γ(0)) = F(t1) = M > 0, and G(1) = F(γ(1)) = F(t2) = m < 0. In this way, by the Halfway Worth Hypothesis, there exists a point s0 in [0, 1] with the end goal that G(s0) = 0.

Let xo = γ(s0). Since G(s0) = F(γ(s0)) = 0, we have F(xo) = 0. Subsequently, we have demonstrated the presence of xo in A to such an extent that 1/|A| ∫ f(x)dx = f(xo).

In the two cases, we have shown the presence of xo in A with the end goal that 1/|A| ∫ f(x)dx = f(xo). This finishes the confirmation.

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Using the Single Factor ANOVA F test with a significance level of α = 0.05, the F test statistic can be calculated to determine if there are any differences in the true average lumen outputs among the three brands of lightbulbs.

The p-value is then obtained from the software. Based on the conclusion derived from the p-value, either the null hypothesis (H0) is rejected, indicating statistically significant differences in the lumen output, or it is failed to be rejected, suggesting no statistically significant differences.

To determine if there are any differences in the true average lumen outputs among the three brands of lightbulbs, a Single Factor ANOVA F test is conducted. The null hypothesis (H0) assumes that there are no differences, while the alternative hypothesis (Ha) suggests that there are differences among the means.

The F-test statistic is calculated by dividing the mean square between treatments (MSTr) by the mean square error (MSE). The F-test statistic is not provided in the question, so it needs to be calculated using the given information.

The p-value, which represents the probability of obtaining test results as extreme as observed or more extreme, is obtained using software. The p-value is the area to the right of the F-test statistic in the F-distribution.

Based on the obtained p-value and a significance level of α = 0.05, the conclusion is made. If the p-value is less than 0.05, the null hypothesis (H0) is rejected, indicating statistically significant differences in the lumen output among the three brands. If the p-value is greater than or equal to 0.05, the null hypothesis (H0) is failed to be rejected, suggesting no statistically significant differences.

The conclusion should be stated based on the calculated p-value and the significance level. It could either be "Reject H0. There are statistically significant differences in the lumen output" or "Fail to reject H0. There are no statistically significant differences in the lumen output."

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I would say its the second one.

the student shouldve distributed the 2^3x+3 into 2^3x+9

The statement "If enough time is available, groups usually make higher-quality decisions than most individuals" is true.

Group decision-making has both advantages and disadvantages, but when enough time is available, groups tend to make higher-quality decisions compared to most individuals. This is due to several reasons. First, groups offer diverse perspectives and expertise, allowing for a broader range of ideas and insights.

Different individuals bring unique knowledge and experiences to the table, leading to a more comprehensive examination of the problem. Second, group decision-making involves collective scrutiny and evaluation of options, which helps in identifying potential flaws or biases in individual opinions.

Group discussions allow for critical analysis, debate, and challenging of assumptions, leading to a more thorough decision-making process. However, it is important to note that time constraints can impact the effectiveness of group decision-making. When time is limited, individual decision-making may be more efficient.

Additionally, the success of group decision-making also depends on factors such as group dynamics, effective communication, and skilled facilitation. Therefore, while groups have the potential for making higher-quality decisions, it is essential to consider the specific context and constraints when determining the most appropriate approach to decision making.

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The solutions are x = 0, π, and 2π for the trigonometric equation 6 sin² x = 5 cos x + 20.

To solve the given equation:

6 sin² x = 5 cos x + 20

We can use the trigonometric identity:

sin² x + cos² x = 1

Multiplying both sides by 6, we get:

6 sin² x + 6 cos² x = 6

Substituting 1 - sin² x for cos² x, we get:

6 sin² x + 6 (1 - sin² x) = 6

Simplifying the equation, we get:

6 - sin² x = 6

sin² x = 0

Taking the square root of both sides, we get:

sin x = 0

x = nπ, where n is an integer.

Substituting this value in the original equation, we get:

6(0)² = 5(cos(nπ)) + 20

0 = (-1)n + 4

n must be even for the equation to hold true. Therefore, the solutions are:

x = 0, π, and 2π.

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Answer:

h = 6.5 feet

Step-by-step explanation:

The height of the frog as a function of time is given by :

[tex]h= -0.5t^2 +3t+2[/tex] .....(1)

We need to find the maximum height reached by the frog. We can find it as follows :

Put [tex]\dfrac{dh}{dt}=0[/tex]

So,

[tex]\dfrac{d}{dt}(-0.5t^2 +3t+2)=0\\\\-t+3=0\\\\t=3[/tex]

Put t = 3 in equation (1).

[tex]h= -0.5(3)^2 +3(3)+2\\\\h=6.5\ feet[/tex]

So, the maximum height is 6.5 feet.

That would just be

66/24, as there is 24 minutes in a half

66/24=2.75 points

p = 2.75 points per min

Answer:

x = 6

Step-by-step explanation:

9/x = 12/8

12x = 72

/12     /12

x = 6

hope this helps ^^