THE ANSWER IS FIGURE 2 BECAUSE THE FIGURES ARE CONSTRUCTED
La suma de 3 menos que 5 veces un número y el número aumentado en 9 da 24,cuál es el número?
Answer:
you added on to that and you will get the answer
Suppose we have two candidate constructions Π1,Π2 of a cryptographic primitive, but we are not sure which of them is secure. A cryptographic combiner provides a way to use Π1 and Π2 to obtain a new construction Π such that Π is secure if at least one of Π1,Π2 is secure (without needing to know which of Π1 or Π2 is secure). Combiners can be used to "hedge our bets" in the sense that a future compromise of one of Π1 or Π2 would not compromise the security of Π. In this problem, we will study candidate combiners for different cryptographic primitives. (a) Let G1,G2 : {0,1} λ → {0,1} 3λ be arbitrary PRG candidates. Define the function G(s1,s2) := G1(s1) ⊕ G2(s2). Prove or disprove: if at least one of G1 or G2 is a secure PRG, then G is a secure PRG. (b) Let H1,H2 : {0,1} ∗ → {0,1} λ be arbitrary collision-resistant hash function candidates. Define the function H(x) := H1(H2(x)). Prove or disprove: if at least one of H1 or H2 is collision-resistant, then H is collision-resistant. (c) Let (Sign1 ,Verify1 ) and (Sign2 ,Verify2 ) be arbitrary MAC candidates2 . Define (Sign,Verify) as follows: • Sign((k1,k2),m): Output (t1,t2) where t1 ← Sign1 (k1,m) and t2 ← Sign2 (k2,m). • Verify((k1,k2),(t1,t2)): Output 1 if Verify1 (k1,m,t1) = 1 = Verify2 (k2,m,t2) and 0 otherwise. Prove or disprove: if at least one of (Sign1 ,Verify1 ) or (Sign2 ,Verify2 ) is a secure MAC, then (Sign,Verify) is a secure MAC.
The advantage of A in this case is negligible. So, adversary A has a negligible advantage, and therefore, G is a secure PRG. Since H1 is collision-resistant, the probability that A finds a collision is negligible. If at least one of H1 and H2 is collision-resistant, then it follows that H is collision-resistant. The adversary then outputs the forgery (k1, k2, m, t1, t2). So, if at least one of the MACs is secure, then the adversary can only succeed in the corresponding case above, and therefore, the probability of a successful attack is negligible.
(a) Let G1,G2 : {0,1} λ → {0,1} 3λ be arbitrary PRG candidates. Define the function G(s1,s2) := G1(s1) ⊕ G2(s2). Prove or disprove: if at least one of G1 or G2 is a secure PRG, then G is a secure PRG. Primitive refers to the various building blocks in Cryptography. A PRG (Pseudo-Random Generator) is a deterministic algorithm that extends a short random sequence into a long, pseudorandom one. The claim that if at least one of G1 or G2 is a secure PRG, then G is a secure PRG is true. Proof: Let A be an arbitrary adversary attacking the security of G. Let s be the seed used by G1 and G2 in the construction of G. The adversary can be broken down into two cases, as follows. Case 1: Adversary A has s1=s2=s. In this case, A can predict G1(s) and G2(s) and, therefore, can predict G(s1,s2). Case 2: The adversary A has s1≠s2. In this case, G(s1,s2)=G1(s1) ⊕ G2(s2) is independent of s and distributed identically to U(3λ). Therefore, the advantage of A in this case is negligible. So, adversary A has a negligible advantage, and therefore, G is a secure PRG.
(b) Let H1,H2 : {0,1} ∗ → {0,1} λ 1 are arbitrary collision-resistant hash function candidates. Define the function H(x) := H1(H2(x)). Prove or disprove: if at least one of H1 or H2 is collision-resistant, then H is collision-resistant. This claim is true, if at least one of H1 or H2 is collision-resistant, then H is collision-resistant. Proof: Suppose H1 is a collision-resistant hash function. Assume that there exists an adversary A that has a non-negligible probability of finding a collision in H. Then, we can construct an adversary B that finds a collision in H1 with the same probability. Specifically, adversary B simply takes the output of H2 and uses it as input to A. Since H1 is collision-resistant, the probability that A finds a collision is negligible. If at least one of H1 and H2 is collision-resistant, then it follows that H is collision-resistant.
(c) Let (Sign1 ,Verify1 ) and (Sign2 ,Verify2 ) be arbitrary MAC candidates. Define (Sign,Verify) as follows: • Sign((k1,k2),m): Output (t1,t2) where t1 ← Sign1 (k1,m) and t2 ← Sign2 (k2,m). • Verify((k1,k2),(t1,t2)): Output 1 if Verify1 (k1,m,t1) = 1 = Verify2 (k2,m,t2) and 0 otherwise. Prove or disprove: if at least one of (Sign1 ,Verify1 ) or (Sign2 ,Verify2 ) is a secure MAC, then (Sign,Verify) is a secure MAC. This claim is true, if at least one of (Sign1 ,Verify1 ) or (Sign2 ,Verify2 ) is a secure MAC, then (Sign,Verify) is a secure MAC. Proof: Consider an adversary that can forge a new message for (Sign,Verify). If we assume that the adversary knows the public keys for (Sign1, Verify1) and (Sign2, Verify2), we can break the adversary down into two cases. Case 1: The adversary can create a forgery for Sign1 and Verify1. In this case, the adversary creates a message (k1, m, t1) that passes Verify1 but hasn't been seen before. This message is then sent to the signer who outputs t2 = Sign2(k2, m).
The adversary then outputs the forgery (k1,k2, m, t1, t2). Case 2: The adversary can create a forgery for Sign2 and Verify2. In this case, the adversary creates a message (k2, m, t2) that passes Verify2 but hasn't been seen before. This message is then sent to the signer, who outputs t1 = Sign1(k1, m). The adversary then outputs the forgery (k1, k2, m, t1, t2). So, if at least one of the MACs is secure, then the adversary can only succeed in the corresponding case above, and therefore, the probability of a successful attack is negligible.
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say we had |v|-1 edges picked from a connected, weighted, and undirected graph. are we guaranteed that these edges form a mst? why or why not?
No, we can't guaranteed that these edges form a MST.
Since the edge (u, v) has the lowest weight in the graph, we begin by supposing that there is no MST of the graph that contains it. The contradiction that results from this is as follows. The graph must have at least one MST if it is connected because we know it has at least one spanning tree.
Think about such an MST T. Keep in mind that, based on our first hypothesis, it does not contain the edge (u, v). Therefore, by adding (u, v) and eliminating one other edge, let's say (x, y), from the cycle that the new edge creates, we can transform it into another spanning tree, denoted T'. Because (u, v) is the edge with the lowest weight, (x, y) has a weight larger than or equal to (u, v), and as a result, T's total weight is less than or equal to T.
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A basketball team has 8 boys and 4 girls on the roster. The boys average 12 points each. The team average 136 points as a whole. How many points does each girl average
Each girl on the basketball team averages 136/12 = 11.33 points.The average number of points each girl scores, we first need to calculate the total number of points scored by the team.
Since the team average is 136 points, the total points scored by the team would be 136 x 12 = 1632 points.There are 8 boys on the team, and each boy averages 12 points. Therefore, the total points scored by the boys would be 8 x 12 = 96 points. To find the total points scored by the girls, we subtract the total points scored by the boys from the total team points: 1632 - 96 = 1536 points.
Since there are 4 girls on the team, we divide the total points scored by the girls (1536) by the number of girls (4) to find the average points scored by each girl: 1536/4 = 384 points. Therefore, each girl on the team averages 384/12 = 11.33 points.
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The n building exemplifies interactive design because it integrates into its façade __________
The n building exemplifies interactive design because it integrates into its façade interactive digital displays.
The n building showcases interactive design by seamlessly incorporating interactive digital displays into its façade. These displays allow for dynamic content, such as visuals, videos, and interactive elements, to be presented on the building's exterior.
By engaging with passersby and creating an interactive experience, the n building transforms a static architectural structure into a vibrant and participatory environment.
This integration of interactive digital displays into the building's façade not only enhances its visual appeal but also fosters a sense of connection and engagement with the surrounding community, blurring the boundaries between the physical and digital realms.
The n building exemplifies interactive design because it integrates into its façade elements that engage and interact with the users. This can include features such as interactive screens, touch-sensitive panels, or interactive lighting displays. These elements encourage user participation and create an immersive and engaging experience for those interacting with the building.
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Tim is choosing between two cell phone plans that offer the same amount of free minutes. Cingular’s plan charges $39.99 per month with additional minutes costing $0.45. Verizon’s plan costs $44.99 with additional minutes at $0.40. How many additional minutes, a, will it take for the two plans to cost the same?
Help me out and show work for this!
Answer: 100 minutes.
Step-by-step explanation:
Make both equations equal each other:
39.99 + 0.45m = 44.99 + 0.40m
Wash out some of the clutter by finding combining like terms:
0.05m = 5
Now, divide by the coefficent of x:
\(\frac{0.05m}{0.05} = \frac{5}{0.05}\)
m = 100
What is the best approximation of the root of 51?
A. 5.9
B. 5.3
C. 9.2
D. 7.1
What is the best approximation for √29? a. 5 b. 5.2 c. 5.9 d. 6
As per the estimation method, the best approximation of root of 51 is D. 7.1.
Estimation method:
In math, estimation method gives us an approximate answer and is usually not accurate to more than 1 decimal place. However, it is easy to perform as can be seen under.
Given
Here we need to find the best approximation of the root of 51
In order to solve this one, we have to perform the following steps,
First, we have to find a perfect square that is smaller than 51 and one that is bigger than 51. In this case, 7 and 8 will work as their squares are 49 and 64.
Now, we have to writing in terms of inequality
=> 7<√51<8 = 49<51<64
Then we have to Multiply by 10 and write in terms of square roots
=> √4900<√5100<√6400
Now, we have to move closer to inequality
=> √5041<√5100<√5184 = 71<10√51<72
=> 7.1<√51<7.2
Then by taking average of upper and lower limits, we get
=> (7.1 + 7.2)/2 = 7.15
Therefore, we can estimate the square root of 51 is approximately 7.1.
Therefore, option D is correct.
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(1 point) standard automobile license plates in a country display 2 numbers, followed by 3 letters, followed by 2 numbers. how many different standard plates are possible in this system? (assume repetition of letters and numbers is allowed.) your answer is :
Therefore ,there are 158,184,000 ways to create a license plate in this system.
What is combination ?A selection from a group of separate items is called a combination in mathematics, and the order in which the elements are chosen is irrelevant (unlike permutations). An apple and a pear, an apple and an orange, or a pear and an orange are three combinations of two fruits that can be chosen from a set of three fruits, such as an apple, an orange, and a pear. Formally speaking, a set S's k-combination is a subset of S's k unique components. Two combinations are therefore equal if and only if they have the same elements in both combinations.
According to the counting principle, the total number of ways to obtain a license plate is calculated by multiplying the number of times each of these events might occur together.
The first number (the digits 1 through 9) can be obtained in nine different ways.
There are 26 methods to obtain the first letter. There are 26 ways to obtain the following letter (repetition is acceptable).
There are 26 methods to get the third letter, 10 ways to get the next number (zero is acceptable), and 10 ways to get the following number with repetitions.
How many ways are there to get the next number? 10 ways\s.
Thus ,total options for obtaining a license plate:
9 x 26 x 26 x 26 x 10 x 10=158184000
Therefore ,there are 158,184,000 ways to create a license plate in this system.
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{(-15, 3), (-5, 1), (0, 0), (10, -2)}
Constant:
Equation:
Direct & inverse variation (identify the constant of variation,then write the direct variation equation to represent the relationship) please helppp!!
Answer:
\(k = -\frac{1}{5}\) -- Constant
\(y = -\frac{x}{5}\) -- Equation
Step-by-step explanation:
Given
\(\{(-15, 3), (-5, 1), (0, 0), (10, -2)\}\)
Solving (a): The constant of variation
The given parameter is of the form (x,y) and the variation constant is calculated using:
\(k = \frac{y}{x}\)
For:(-15,3), k is calculated as
\(k = \frac{y}{x}\)
\(k = \frac{3}{-15}\)
\(k = -\frac{1}{5}\)
For (-5,1)
\(k = \frac{y}{x}\)
\(k = \frac{1}{-5}\)
\(k = -\frac{1}{5}\)
The equation is calculated using the following rule:
\(y = kx\)
Substitute \(-\frac{1}{5}\) for k
\(y = -\frac{1}{5} * x\)
\(y = -\frac{x}{5}\)
come help me!! rack up those points!! needing lots of help with geometry today :)
Answer:
312 in^2
Step-by-step explanation:
Yet again, not the best way but let's add up all the sides...
2(24+96+36) = 2(156) = 312 in^2
Hope this helped!
For each of the following situations, identify the measure of central tendency (mean, median, or mode) that would provide the best description of the "average" or most representative score. Please explain your choice: a. A researcher asks each individual in a sample of 50 adults to name his/her favorite season (summer, fall, winter, spring). b. An insurance company would like to determine how long people remain hospitalized after a routine appendectomy. The data from a large sample indicate that most people are released after 2 or 3 days but a few develop infections and stay in the hospital for weeks c. A teacher measures scores on a standardized reading test for a sample of children from a middle-class, suburban elementary school.
The measure of central tendency best suited for the given situation are mode (a), median (b) and mean (c) respectively.
a. The measure of central tendency best suited for this situation is the mode, because it would provide the most representative score of the favorite season. The mode is the most commonly occurring value in a set of data, so it would be useful for determining the most popular season among the sample of 50 adults.
b. The measure of central tendency best suited for this situation is the median, because it would provide the most representative score of the length of stay in the hospital after a routine appendectomy. The median is the middle value in a set of data when the values are arranged in numerical order, and it is not affected by very high or very low values (as the mean is). Therefore, it would be the most useful for determining the average length of stay in the hospital for this particular sample.
c. The measure of central tendency best suited for this situation is the mean, because it would provide the most representative score of the standardized reading test scores. The mean is the average of all the values in a data set, so it would be useful for determining the average score of the sample of children from the middle-class, suburban elementary school.
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in the diagram,the measure of angle ACB is 25 degrees. what is the measure of angle AOB?
Answer:
m<AOB = 50°
Step-by-step explanation:
<ACB = 25° is an inscribed angle of the circle.
<AOB is a central angle of the circle.
Thus, based on the inscribed angle theorem which states that an inscribed angle is ½ the measure of the central angle, therefore:
m<ACB = ½(m<AOB)
Substitute
25° = ½(m<AOB)
Multiply both sides by 2
2*25 = m<AOB
m<AOB = 50°
Calculate the double integral.
3xy2
x2 + 1dA, R = {(x, y) | 0 ≤ x ≤ 1, −2 ≤ y ≤ 2}
iintegral.gif
R
the double integral.3xy2 x2 + 1dA, R = {(x, y) | 0 ≤ x ≤ 1, −2 ≤ y ≤ 2}
∫∫3xy2 dx dy = 16
We start by calculating the limits of integration. The given region, R, is bounded by 0 ≤ x ≤ 1 and −2 ≤ y ≤ 2. This means that the double integral is:
∫∫3xy2 dx dy = ∫0→1∫-2→2 3xy2 dx dy
Next, we will calculate the integral with respect to x. We can easily do this by integrating 3xy2 with respect to x. This gives us the following:
∫0→1 3xy2 dx = x3y2 + c
Now, we can substitute this expression into the double integral, giving us:
∫∫3xy2 dx dy = ∫0→1 (x3y2 + c) dy
Finally, we can integrate this expression with respect to y, giving us the following:
∫∫3xy2 dx dy = x3y3 + cy + d
Now, we can substitute the limits of integration into this expression, giving us the following:
∫∫3xy2 dx dy = 1(32) + c(-2) + d = 16
therefore, the double integral is equal to 16.
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It cost Jayden $4.80 to send 96 text messages. How much would it cost to send 155 text messages?
Answer:
$7.75
Step-by-step explanation:
1. Take the cost - $4.80 for the 96 messages, and divide $4.80 by 96 to get the cost per message.
2. 4.80 ÷ 96 = $0.05 per message
3. Take that figure and multiply by 155 messages.
4. 155 × $0.05 per message = $7.75
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Put in descending order
1/4, 0.4, 21%, 0.34, 3/100
Answer: So greatest to least would be 0.4, 0.34, 1/4 21%, and 3/100 for the least
Step-by-step explanation:
1/4=0.25
0.4=0.40
21%=0.21
0.34=0.34
3/100=0.03
The number name of 70080067
In Indian System
Answer:
Seven crore eighty thousands sixty-seven.
Step-by-step explanation:
70080067
Seven crore eighty thousands sixty-seven.
Equations and Inequalities: Tutorial
Each year, the junior class at East High School sells discount cards as a fundraiser. Each $20 discount card is valid for a year
and provides discounts at many area businesses.
This year's juniors are analyzing the revenue, or earnings, from past years and this year. If n represents the number of cards
that students sold last year, match each algebraic expression to what it represents.
Drag the tiles to the correct boxes. Not all tiles will be used.
Tiles
20n
n + 200
20n + 200
20(n + 200)
200n
Pairs
revenue from last year
number of cards sold this year if students sell 200 more cards than last year
revenue this year if students sell 200 more cards than last year
Answer: revenue from last year 20n
number of cards sold this year if students sell 200 more cards than last year n + 200
revenue this year if student sell 200 more cards than last year 20(n + 200)
Step-by-step explanation:
An expression is defined as a set of numbers, variables, and mathematical operations. The given pairs can be matched as shown below.
What is an Expression?In mathematics, an expression is defined as a set of numbers, variables, and mathematical operations formed according to rules dependent on the context.
Given that n represents the number of cards that students sold last year. Also, it is given that each card is sold for $20. Therefore, the given pairs can be matched as shown below.
1.) Revenue from last year
Revenue = Number of tickets sold last year × Cost of each ticket
= n × $20
= 20n
2.) Number of cards sold this year if students sell 200 more cards than last year
Number of cards sold this year = Number of tickets sold last year + 200
= n + 200
3.) Revenue this year if students sell 200 more cards than last year
Revenue this year = Number of cards sold this year × Cost of each ticket
= (n + 200) × 20
= 20(n+200)
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Find the solutions to x2 = 20.
Answer:
X=+2^5 A
Step-by-step explanation:
Question 1 Initially, there are 10 crocodiles species A in a controlled river. After 6 months, the number of crocodiles increase to 12 . Assume the growth rate of crocodiles' population, P is directly proportional to the present population. a) Determine the expression of P(t) describing the population of crocodiles at any time t. (5 marks) b) What is the population of crocodiles species A after 2 years? (2 marks) c) How long would it take for the population of crocodiles to reach 30 ? (3 marks)
a) the expression of P(t) describing the population of crocodiles at any time t is: P(t) = 10 * e\(^{(0.1823t)}\)
b) it would take approximately 4.522 time units (months or years, depending on the unit of t) for the population of crocodiles to reach 30.
How to determine how long would it take for the population of crocodiles to reach 30a) To determine the expression of P(t) describing the population of crocodiles at any time t, we can use the formula for exponential growth, which states that P(t) = P0 * e\(^{(rt)}\) where P0 is the initial population, r is the growth rate, and t is the time.
Given that the initial population P0 is 10 crocodiles and the population after 6 months is 12 crocodiles, we can use this information to find the value of r.
Using the formula P(t) = P0 * e\(^{(rt)}\) and plugging in the values, we have:
12 = 10 * e\(^{(r * (6/12))}\)
Simplifying further:
12/10 = e\(^{(r/2)}\)
1.2 = e\(^{(r/2)}\)
To find the value of r, we can take the natural logarithm of both sides:
ln(1.2) = r/2
r/2 ≈ 0.1823
Therefore, the expression of P(t) describing the population of crocodiles at any time t is:
P(t) = 10 * e\(^{(0.1823t)}\)
b) To find the population of crocodile species A after 2 years, we substitute t = 2 into the expression we derived in part a:
P(2) = 10 * e\(^{(0.1823 * 2)}\)
P(2) ≈ 10 * e\(^{(0.3646)}\)
P(2) ≈ 10 * 1.4406
P(2) ≈ 14.406
Therefore, the population of crocodile species A after 2 years is approximately 14.406 crocodiles.
c) To determine how long it would take for the population of crocodiles to reach 30, we can set the population P(t) equal to 30 and solve for t in the expression we derived in part a:
30 = 10 * e\(^{(0.1823t)}\)
3 = e\(^{(0.1823t)}\)
Taking the natural logarithm of both sides:
ln(3) = 0.1823t
t = ln(3) / 0.1823
t ≈ 4.522
Therefore, it would take approximately 4.522 time units (months or years, depending on the unit of t) for the population of crocodiles to reach 30.
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Which statement is true?
Answer: (d)
Step-by-step explanation:
For option (a)
\(\sqrt[m]{x}\sqrt[m]{y}=\sqrt[m]{xy}\)
for the same exponent, numbers multiply keeping exponent the same.
for option (b)
\(a\sqrt[n]{x} +b\sqrt[n]{y} =\left(a+b\right)\sqrt[n]{x}\)
for option (c)
\(\Rightarrow \dfrac{\sqrt[m]{x} }{\sqrt[m]{y} }=\sqrt[m]{\dfrac{x}{y}}\)
for option (d)
exponent multiplies
\(\therefore \left(\sqrt[m]{x^a} \right)^b=\sqrt[m]{x^{ab}}\)
option (d) is correct
the top priority during physical activity in the classroom is
The top priority during physical activity in the classroom is the safety and well-being of the students.
Ensuring a safe environment for physical activity helps prevent injuries and promotes the overall health and engagement of the students.
1. Supervision: Adequate adult supervision should be provided to monitor the students' activities, ensuring they are engaged in safe and appropriate physical exercises.
2. Proper Warm-up and Cool-down: Encouraging students to perform warm-up exercises before engaging in more vigorous activities and cool-down exercises afterward helps prevent injuries and promotes proper muscle recovery.
3. Suitable Physical Activities: The chosen physical activities should be age-appropriate, taking into account the students' physical abilities and limitations. Activities should be designed to minimize risks and promote participation for all students.
4. Clear Instructions and Demonstration: Teachers should provide clear instructions and demonstrate proper techniques for exercises or activities to ensure students understand how to perform them safely and effectively.
5. Equipment and Environment Safety: Regular inspection of equipment and ensuring the physical environment is free from hazards (such as tripping hazards or obstacles) is essential for maintaining a safe setting.
6. Individual Needs and Modifications: Teachers should consider any individual needs or limitations of students, such as physical disabilities or health conditions, and make necessary modifications or adaptations to ensure their safety and inclusion.
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the top priority during physical activity in the classroom is?
leyanna has a bag of 9 marbles there are 5 red marbles and 4 yellow marbles if leyanna choose one marble at random, what are the chances that it is yellow
If Leyanna choose one marble at random, the chances that it is yellow is 4/9 that is 0.44.
Total number of marbles in bag are 9
There are 5 red marbles and 4 yellow marbles
Total number of marbles = 5 + 4 = 9.
Therefore total number of cases is 9
Since there are 4 yellow marbles, the number of favorable outcomes is 4.
So P ( a yellow marble) =Number of favorable cases/ Total number of cases
= 4/9
So probability of choosing a yellow marble is 4/9.
The area of mathematics known as probability deals with numerical representations of the likelihood that an event will occur or that a statement is true. An event's probability is a number between 0 and 1, where, roughly speaking, 0 denotes the event's impossibility and 1 denotes certainty.
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×+7-8×/3=-5×/2 please help me with this please please
please
Answer:
\(x=-14\)
Step-by-step explanation:
\(\frac{x+7-8x}{3}=-\frac{5x}{2}\\\mathrm{Apply\:fraction\:cross\:multiply:\:if\:}\frac{a}{b}=\frac{c}{d}\mathrm{\:then\:}a\cdot \:d=b\cdot \:c\\\left(x+7-8x\right)\cdot \:2=-3\cdot \:5x\\Simplify\\2\left(-7x+7\right)=-15x\\\mathrm{Expand\:}2\left(-7x+7\right):\quad -14x+14\\2\left(-7x+7\right)\\\mathrm{Apply\:the\:distributive\:law}:\quad \:a\left(b+c\right)=ab+ac\\a=2,\:b=-7x,\:c=7\\=2\left(-7x\right)+2\cdot \:7\\\mathrm{Apply\:minus-plus\:rules}\\+\left(-a\right)=-a\\=-2\cdot \:7x+2\cdot \:7\)
\(\mathrm{Multiply\:the\:numbers:}\:2\cdot \:7=14\\=-14x+14\\-14x+14=-15x\\\mathrm{Subtract\:}14\mathrm{\:from\:both\:sides}\\-14x+14-14=-15x-14\\\mathrm{Simplify}\\-14x=-15x-14\\\mathrm{Add\:}15x\mathrm{\:to\:both\:sides}\\-14x+15x=-15x-14+15x\\\mathrm{Simplify}\\x=-14\)
The Central Limit Theorem is important in Statistics because it allows us to use the normal distribution to make inferences concerning the population mean: O provided that the population from which the sample was drawn is normal and the sample size is reasonably large. O provided that the population size is reasonably large (whether the population distribution is known or not). O provided that the sample size is reasonably large (for any population). o provided that the population from which the sample was drawn is normal.
The correct statement is: provided that the sample size is reasonably large (for any population).
Why the statement provided that the sample size is reasonably large is correct?The Central Limit Theorem states that, under certain conditions, the sampling distribution of the sample mean will be approximately normal, regardless of the shape of the population distribution.
These conditions include a random sample from the population and a sufficiently large sample size (typically, n > 30 is considered large enough).
Therefore, the Central Limit Theorem is important because it allows us to make inferences about the population mean using the normal distribution, even if we do not know the population distribution.
This is useful in many applications of statistics, including hypothesis testing, confidence intervals, and estimating population parameters
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SOLVE PLS HURRY PLS INCLUDE STEPS 4a + 1 - a = 19
Answer:
a=6
Step-by-step explanation:
Step 1: Simplify both sides of the equation.
4a+1−a=19
(4a+−a)+(1)=19 (Combine Like Terms)
3a+1=19
Step 2: Subtract 1 from both sides.
3a+1−1=19−1
3a=18
a=18/3
a=6
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wrok has determined an average listenership is 15 minutes with a standard deviation of 1.25 minutes. the number of respondents in this study is 500 people. calculate the standard error of the mean and determine the lower limit of the 99% confidence interval given this data. the lower limit for the 99% confidence interval is
The lower limit of the 99% confidence interval is approximately 14.8615 minutes.
To calculate the standard error of the mean, we use the formula:
Standard Error of the Mean = Standard Deviation / √(Sample Size)
Given that the standard deviation is 1.25 minutes and the sample size is 500, we can calculate the standard error of the mean as follows:
Standard Error of the Mean = 1.25 / √(500) = 0.0559 (rounded to four decimal places)
Next, to determine the lower limit of the 99% confidence interval, we need to use the formula:
Lower Limit = Mean - (Z * Standard Error of the Mean)
Since we want the lower limit of the 99% confidence interval, we need to find the corresponding Z-value for a 99% confidence level. The Z-value can be obtained from a standard normal distribution table or by using a statistical calculator.
For a 99% confidence level, the Z-value is approximately 2.576.
Substituting the values into the formula, we have:
Lower Limit = 15 - (2.576 * 0.0559) ≈ 14.8615 (rounded to four decimal places)
Therefore, the lower limit of the 99% confidence interval is approximately 14.8615 minutes.
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Complete the table of values. Please help!
Answer:
Step-by-step explanation:
Where we have "x" must replace for the number shown on table
We have for "x" tha numbers: 0; 1; 2; 3; 4 and 5
Equation:
1.y = x+4
y = x + 4
For x = 0
y = x + 4
y = 0 + 4
y = 4
For x = 1
y = x + 4
y = 1 + 4
y = 5
For x = 2
y = x + 4
y = 2 + 4
y = 6
For x = 3
y = x + 4
y = 3 + 4
y = 7
For x = 4
y = x + 4
y = 4 + 4
y = 8
For x = 5
y = x + 4
y = 5 + 4
y = 9
So:
x y
0 4
1 5
2 6
3 7
4 8
5 9
I hope help you.
(a) We would like to know if Intel's stock and Southwest Airlines' stock have similar rates of return. To find out, we take a random sample of 50 days, and record Intel's and Southwest's stock on those same days.
Thus, to determine whether Intel's stock and Southwest Airlines' stock have similar rates of return, we can use a statistical analysis of the daily rate of return for each stock over a 50-day period. However, the small sample size means that we must be cautious when interpreting the results.
To determine whether Intel's stock and Southwest Airlines' stock have similar rates of return, we can conduct a statistical analysis using the sample data collected. The sample size of 50 days is relatively small, so we must be cautious when interpreting the results.
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Two fair dice are rolled. What is the probability that you will first roll a number greater then 2 and then roll a 6
Answer:
\(\frac{1}{9}\)
Step-by-step explanation:
3, 4, 5, and 6 are greater than 2.
\(\frac{4}{6}\)
6 is one of the six numbers on the dice.
\(\frac{1}{6}\)
\(\frac{4}{6}\) × \(\frac{1}{6}\)
\(\frac{4}{36}\)
\(\frac{4}{36}=\frac{1}{9}\)
Gandalf the Grey started in the Forest of Mirkwood at a point with coordinates and arrived in the Iron Hills at the point with coordinates (3, 4). If he began walking in the direction of the vector and changes direction only once, when he turns at a right angle, what are the coordinates of the point where he makes the turn?
Since the equation does not equal zero, our initial guess was incorrect. We would need to solve the equation using other methods such as factoring, completing the square, or using the quadratic formula to find the precise coordinates where Gandalf makes the turn.
To determine the coordinates where Gandalf the Grey makes the turn, we need to find a vector that represents the direction from the Forest of Mirkwood to the Iron Hills.
The vector representing the direction can be obtained by subtracting the coordinates of the starting point (Forest of Mirkwood) from the coordinates of the destination point (Iron Hills). Therefore:
Direction vector = (3, 4) - (x, y)
Since Gandalf makes a right-angle turn, the direction vector will be perpendicular to the vector between the turn point and the starting point.
For two vectors to be perpendicular, their dot product must be zero. The dot product of two vectors (a, b) and (c, d) can be calculated as ac + bd.
Using this information, we can set up the equation:
(3, 4) - (x, y) dot (x, y) = 0
Expanding the equation, we get:
(3 - x) * x + (4 - y) * y = 0
Simplifying further, we have:
3x + 4y - x^2 - y^2 = 0
Since Gandalf changes direction only once, we can assume that the turn point is within reasonable proximity to the starting point. Hence, we can make an educated guess to solve the equation. Let's assume x = 1 and y = 2 as an example.
Substituting these values into the equation:
3(1) + 4(2) - (1^2) - (2^2) = 0
3 + 8 - 1 - 4 = 6 - 5 = 1
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