Answer:
The mean can be regarded as a measure of `central location' of a random variable. It is the weighted average of the values that X can take, with weights provided by the probability distribution. The mean is also sometimes called the expected value or expectation of X and denoted by E(X).
Let g be the function given by g(x)=x2ekx, where k is a constant. For what value of k does g have a critical point at x=23?.
It looks like we have
[tex]g(x) = x^2 e^{kx}[/tex]
If x = 23 is a critical point of g(x), then
[tex]g'(x) = 2x e^{kx} + kx^2 e^{kx} = (kx^2 + 2x) e^{kx}[/tex]
[tex]\implies g'(23) = (23^2k + 46) e^{23k} = 0[/tex]
[tex]e^{23k}[/tex] is positive for all k, so we're left with
23² k + 46 = 0
23² k = -46
k = -46/23²
k = -2/23
What is the first step in solving the equation 3. 5 n + 6. 4 = 42. 5? add 6. 4 to each side of the equation. Subtract 6. 4 from each side of the equation. Multiply each side of the equation by 3. 5. Divide each side of the equation by 6. 4.
Answer:
3.5n+6.4=42.5
-6.4=-6.4
3.5n=36.1
————— (divide)
3.5=3.5
n=36.1/3.5 or 10.314
Explanation:
I'm confused by the question... is the question what is the first step of solving this equation?? and if it is, your answer is correct. which is subtract 6.4 for both sides.
A guidance counselor wants to determine if there is a relationship between a student’s number of absences, x, and their grade point average (gpa), y. The data that were collected are displayed in the scatterplot and the least-squares regression line was calculated. One student with 2 absences has a gpa of 1. 8. This point is circled on the graph. What effect does the circled point have on the slope and y-intercept of the least-squares regression line? this point will increase the value of the slope and increase the value of the y-intercept. This point will increase the value of the slope and decrease the value of the y-intercept. This point will decrease the value of the slope and increase the value of the y-intercept. This point will decrease the value of the slope and decrease the value of the y-intercept.
Based on the information given, the effect of the circled point on the correlation will be D. This point will decrease the value of the slope and decrease the value of the y-intercept.
What is correlation?From the complete information, it can be noted that the effect of the circled point on the correlation is that the correlation will be weakened because the point falls outside the data pattern.
Therefore, this implies that the point will decrease the value of the slope and decrease the value of the y-intercept.
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Answer:
D
Explanation:
A country that is concerned about inflation wants to:.
Answer:
Prevent its currency from losing value too quickly.
Explanation:
What is potentially problematic about an advertisement with this message.
Answer:
what is the message? I don't see a pictures
Arrange the tiles to show the sequence of events in the development of the theory of evolution.
According to the principle of natural selection, organisms breed more young than they can withstand in their surroundings.
What is Theory of Evolution?Those who are more physically capable of surviving, maturing, and reproducing. On the other hand, those who lack this fitness either do not live long enough to reproduce or have fewer children than their counterparts.
Because the "fittest" organisms—those most adapted to their environment—are the ones that reproduce most successfully and are most likely to pass on their qualities to the next generation, natural selection is sometimes summed up as "survival of the fittest."
This means that if an environment changes, qualities that help people survive in it will eventually adapt, or develop. Natural selection was a potent force.
Therefore, According to the principle of natural selection, organisms breed more young than they can withstand in their surroundings.
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Oil refining is an example of:
Construction Production
Extractive Production
Domestic Production
Traditional Production
We all use memory in the same way.
Answer:
faccccttssss
Explanation:
Hope this helps! Pls give brainliest! Also, plz sub to kgirl633 on yt.
The security system in a house has two units that set off an alarm when motion is detected. Neither one is entirely reliable, but one or both always go off when there is motion anywhere in the house. Suppose that for motion in a certain location, the probability that detector a goes off and detector b does not go off is 0. 25, and the probability that detector a does not go off is 0. 35. What is the probability that detector b goes off?.
The probability that detector B goes off is 0.75
The probability of an event is known to be the likelihood or chance for an event to occur.
From the given information let consider:
A = the time when detector A goes off, andB = the time when detector B goes offSince one or both of them always goes off, then:
P(A or B) = 1∴
Their complements will be zero, i.e.
P(A' and B') = 0Similarly, we are given that:
P(A and B') = 0.25Then;
P(A') = 0.35∴
The set probability for A will be:
P(A) = 1 - P(A')
P(A) = 1 - 0.35
P(A) = 0.65
Finally, the probability that detector B goes off can be computed as:
P(B) = P(A) P(B|A) +P(A') P(B|A')
P(B) = P(A) (1 - P(B|A')) + P(A') (1 - P(B'|A')
[tex]\mathbf{P(B) = P(A) (1-\dfrac{P(A \ and \ B')}{P(A)}) +P(A') (1 - \dfrac{P(A' \ and B')}{P(A')})}[/tex]
[tex]\mathbf{P(B) = 0.65 (1-\dfrac{0.25}{0.65}) +0.35 (1 - \dfrac{0}{0.35})}[/tex]
P(B) = 0.75
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a student is standing 20 feet away from the base of a tree
The universal gas law, pv = nrt, describes the relationship among the pressure, volume, and temperature of a gas. P = pressure v = volume t = temperature (kelvin) n = number of moles (quantity of gas particles) r = universal gas constant at a constant temperature of 1 k, the pressure and volume of 1 mole of gas vary inversely. P = startfraction uppercase r over uppercase v endfraction use the values in the table to find the value of r. Es001-1. Jpg r =.
Answer:
8.31
Explanation:
just did it on edge 2021
Answer:
R= 8.31
Explanation:
Which of the following impacts the heat level of a pepper?
Answer:Capsaicin.
Explanation:
Which about mama does the author show in this passage from everyday use.
People often have different opinions or views. Which about mama that the author show in this passage from everyday use is that Mama is ordinary and Humble.
This passage depicts mama to be a very strong woman, who lives an ordinary life, humble in nature and still what she the advantages of her body shape and type.
She believes that been big is aa plus to her as this will gives her strength It also helps us to know that she is just as ordinary woman who is capable of completing difficult tasks.
See full question below
Which about Mama does the author show in this passage from "Everyday Use?
" In real life I am a large, big–boned woman with rough, man–working hands. In the winter I wear flannel nightgowns to bed and overalls during the day. I can kill and clean a hog as mercilessly as a man. My fat keeps me hot in zero weather."
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Which shows the correct values for the variables in the table? a = 18, b = 34, c = 65 a = 34, b = 18, c = 68 a = 34, b = 68, c = 47 a = 47, b = 18, c = 68.
The values of a, b, and c from the table are 34, 18, and 68 respectively.
From the given table, the following equations are true;
number of subscribers above $25000 + number of those not subscribing above $25000 = 47Set theorySubstituting the values:
a + 13 = 47
a = 47 - 13
a = 34
Similarly;
b + 55 = 73
b = 73 - 55
b = 18
Also, c = 13 + 55
c = 68
Hence the values of a, b, and c from the table are 34, 18, and 68 respectively.
Missing part of the question
A group of 120 people were asked whether their income level is above or below $25,000 and whether they subscribe to a movie channel. The data from the survey is shown in the Venn diagram. Use the Venn diagram to find the missing values in the frequency table.
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you have a credit card and the average balance on that card year after year is 4000
Pure water boils at 100°c. What happens to the water particles when water boils?.
Answer:
When boiling occurs, the more energetic molecules change to a gas, spread out, and form bubbles. These rise to the surface and enter the atmosphere. ... Therefore the temperature of the liquid remains constant during boiling. For example, water will remain at 100ºC (at a pressure of 1 atm or 101.3 kPa) while boiling.
Explanation:
not too sure tho
Answer:
When boiling occurs, the more energetic molecules change to a gas, spread out, and form bubbles.
Explanation:
they gain energy and move further apart
What does the image of "a huge mountain ‘tween my heart and tongue" suggest about the meaning of this passage? portia does not want lucius to find out that she is in love. Portia fears her own thoughts and wishes they would stop. Portia is not sure if lucius can be trusted with the errand. Portia does not want to say what she is feeling.
Answer: d. Portia does not want to say what she is feeling.
Explanation:
I got it right
Question:
What does the image of "a huge mountain ‘tween my heart and tongue” suggest about the meaning of this passage?
-Portia does not want Lucius to find out that she is in love.
-Portia misses the freedom to enjoy being out in nature.
-Portia knows that Lucius is one of the conspirators.
- Portia wishes for help to keep from saying what she knows and feels.
Answer:
Portia wishes for help to keep from saying what she knows and feels. -D
Explanation:
Just did it!
Which chart places the elements of plot in the correct order? chart a chart b chart c chart d.
Plots are made up of elements. Chart C is the chart that places the elements of plot in the correct order (See image attached)
What is a Plot.A Plot is known to be a pattern or movement of events in a story. In this story, the main character undergoes different challenging task that makes a character to choose difficult choices.
It is also described as the way an author produces and organizes a series of events in a specific narrative. It is commonly called the foundation of a story.
The elements includes:
Exposition and introduction Rising action Climax Falling action Resolution
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Answer:
the answer is chart C exposition - rising action - climax - falling action - resolution
Explanation:
The life span of a battery is the amount of time the battery will last. The distribution of life span for a certain type of battery is approximately normal with mean 2. 5 hours and standard deviation 0. 25 hour. Suppose one battery will be selected at random. Which of the following is closest to the probability that the selected battery will have a life span of at most 2. 1 hours?.
The probability that the selected battery will have a life span of at most 2.1 hours is 5.48%.
z score is used to determine by how many standard deviations the raw score is above or below the mean. It is given by:
[tex]z=\frac{x-\mu}{\sigma} \\\\where\ x\ is\ raw\ score, \mu\ is\ mean,\sigma\ is\ standard \ deviation[/tex]
Given that μ = 2.5, σ = 0.25.
For x < 2.1:
[tex]z=\frac{2.1-2.5}{0.25}=-1.6[/tex]
From the normal distribution table, P(x ≤ 2.1) = P(z < -1.6) = 0.0548 = 5.48%
The probability that the selected battery will have a life span of at most 2.1 hours is 5.48%.
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What do local governments do?
Answer:
Local government is responsible for a range of vital services for people and businesses in defined areas. Among them are well known functions such as social care, schools, housing and planning and waste collection, but also lesser known ones such as licensing, business support, registrar services and pest control.
Please select the word from the list that best fits the definition the considerable power that the police have to decide who is actually arrested.
Answer:
The answer is Police discretion!
Explanation:
Correct on Edge!! :)
Police discretion is the word which is used to decide who is actually arrested.
What is police discretion?
The police discretion definition refers to the freedom of police officers to make decisions as they perform their official duties. There are many instances throughout a police officer's day-to-day work where they can decide how to respond to a situation using their own best judgement and wisdom rather than a strict law.
Officer discretion is a useful and necessary part of an officer's ability to do their job, as police officers must often make quick, in-the-moment decisions that cannot wait for specific laws to be consulted or reviewed.
Police discretion examples include an officer's decision whether or not to draw their weapon, to make an arrest, to issue a traffic ticket, to perform a search on a suspect, or to stop and assist someone in need of help.
Therefore, Police discretion is the word which is used to decide who is actually arrested.
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Match each sentence with the type of dependent clause it includes.
Answer:
Where are the sentences? I think we need it.
Answer:WHEN YOU GET READY IS ADVERBIAL CLAUSE,WHATEVER YOURE DOING IS NORMINAL CLAUSE,WHO ARE GOING IS ADJECTIVAL CLAUSE.
Explanation:just did it
Read this sentence and select the dependent clause.
Answer:
Where is the sentence? As soon as you post the picture I will write the answer in the comments.
how does douglass appeal to the audience’s sense of logic in the excerpt? by using his own personal experiences to gain their trust by recounting emotional events to evoke sadness by explaining the reasoning behind his argument by describing how he plans to effect change in the us
Answer:
B
Explanation:
I got it right on test
Answer:
B. by recounting emotional events to evoke sadness
Explanation:
edge 2022
The three greater than signs (>>>) are called the python.
Answer:
The three greater-than signs ->>>- are called the prompt
Explanation:
:)
The three greater than signs (>>>) do not exist in Python
How to determine the name of the signFrom the question, we have the following parameters that can be used in our computation:
Sign = >>>
The above sign do not exist in the python syntax and as such it has no meaning
This means that, the three greater than signs (>>>) do not exist in the python language
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A researcher wants to conduct a study to see if playing chess improves memory. The researcher finds 50 individuals who play chess regularly and 50 that do not. Each of the 100 individuals are given a questionnaire designed to determine memory level. If the 100 individuals did not know they were participating in the study, which statement about the study is correct?.
Answer:
This is an observational study
Explanation:
just took the test
The diagram above can be completed with an increase in the membership and political power of which group? the populist party the ku klux klan the congress of racial equality the american civil liberties union.
The diagram in the image attached below can be completed with an increase in the membership and political power of: C. the congress of racial equality.
Migration refers to the movement of a group of people from one geographical region (location) to another geographical destination, in search of better social amenities, living conditions, and work.
In the United States of America, there was an increase (rise) racial tension due to the following:
Migration of African-Americans to cities. Rise of nativism and religious fundamentalism among the people.Consequently, the congress of racial equality (CORE) was established in 1942 by James Farmer to serve as an African-American civil rights organization (interracial organization).
In conclusion, the congress of racial equality (CORE) played a pivotal role in the civil rights movement by promoting the use of non-violent tactics to help African-Americans;
1. Secure equal rights with the Whites.
2. End racial discriminations in the United States of America.
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Which persuasive techniques are used in this poster? select 2 options. Glittering generalities about the viewer a simple solution to a problem fear over a possible outcome association with a positive idea nostalgia that helps people recall the past.
The persuasive techniques that were used in the given poster are; Option A; glittering generalities about the viewer. and Option C; fear over a possible outcome
The poster is missing and so i have attached it.
The painting in the attached image was one created by Norman Rockwell released by the United Kingdom's Royal Navy during World War II.
The intentions and message the poster is trying to communicate is very direct because it tells us that if the workers waste time, the production rate of ships and destroyers will definitely decrease and as such the war will continue and it will take a far longer time to win the war.
The persuasive technique used in this poster is that it shows the glittering generalities about the viewer and from the images fear over a possible outcome.
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Answer:
A)glittering generalities about the viewer
C)fear over a possible outcome
Explanation:
edg 2021
An astronaut in the space station appears weightless because the astronaut seems to float. Which of the following claims is true about the force exerted on the astronaut by earth?.
Answer:
The force exerted on the astronaut by Earth is equal to the force exerted on Earth by the astronaut.
Explanation:
The claim that is true about the force exerted on the astronaut by the earth is equal to the force exerted on Earth by the astronaut. The correct option is D.
Who is an astronaut?An astronaut is a scientist who studies the bodies outside the earth. The galaxies, planets, and other astronomical units.
Newton's third rule of motion states that there is always an equal and opposite response to every action in nature. For example, if a first item exerts a specific amount of force on a second object, the second object will do the same but in the opposite direction.
As a result, the gravitational pull that Earth has on the astronaut is equivalent to the pull that the astronaut has on Earth.
Therefore, the correct option is D) the force exerted on the astronaut by Earth is equal to the force exerted on Earth by the astronaut.
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The question is incomplete. Your most probably complete question is given below:
A) there is no force exerted on the astronaut by Earth because the astronaut is 400km above Earth’s surface
B) the force exerted on the astronaut by Earth is less than the force exerted by the astronaut because the astronaut is 400km above Earths surface
C) the force exerted on the astronaut by Earth is equal to the gravitational force of the space station that is exerted on the astronaut; the two equal forces balance to cause the astronaut to float.
D) the force exerted on the astronaut by Earth is equal to the force exerted on Earth by the astronaut
A student places a set of books with a force of 25 n on a lab table with a force of 150 n. What is the normal force pushing upward on the legs of the table?.
The normal force acting on the legs of the table is 175 N
The weight of the books is the force exerted by the books on the table, and it is given as:
[tex]W =25N[/tex]
The force exerted by the table is given as:
[tex]F = 150N[/tex]
The parameters above imply that:
The table and the books are stationary,The force exerted by both act in the same downward direction.So, the normal force acting on the legs of the table is calculated as follows:
[tex]F_N =F +W[/tex]
Substitute known values
[tex]F_N = 150N + 25N[/tex]
[tex]F_N = 175N[/tex]
Hence, the normal force acting on the legs of the table is 175 N
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