The mean weight of 45 boys is 65kg and 37 girls is 45kg and that of 5 teachers is 70kg. What is the average weight of the whole class included the teachers?

Answers

Answer 1

Answer:

The average weight of the whole class is: 56.78kg

Explanation:

Given

[tex]\bar x_{boys} = 65[/tex]

[tex]n_{boys} = 45[/tex]

[tex]\bar x_{girls} = 45[/tex]

[tex]n_{girls} = 37[/tex]

[tex]\bar x_{teachers} = 70[/tex]

[tex]n_{teachers} = 5[/tex]

Required

The average of the whole class.

This requires that we calculate the population average

This is calculated as:

[tex]\mu = \frac{\sum n_i * \bar x_i}{\sum n}[/tex]

So, we have:

[tex]\mu = \frac{45 * 65+ 37*45+5*70}{45+37+5}[/tex]

[tex]\mu = \frac{4940}{87}[/tex]

[tex]\mu = 56.78[/tex]


Related Questions

WILL MARK BRAINLIEST

The miracle child

Explain the transfer of authority symbolized by the transfer of keys between Helen, Kate, and Annie throughout the play. Write a paragraph of at least 125 words.

Answers

Answer:

here is some of it hopes this part helps -Keys are used to open and close doors, lock characters in or out, and deprive characters of their freedom. Keys also serve as the medium Helen chooses in the play's final moments to communicate understanding and trust in Annie, her teacher. Throughout the play, keys are controlled by either Annie or Helen.

Explanation:brainliest plz

Which situation is most clearly ironic?
O A. A contest between two chess grand masters
B. A series of quick exchanges between two pals
O C. A sweater sale on the hottest day of the year
OD. A gazebo on a lonely hilltop during a huge storm

Answers

Answer:

O C. A sweater sale on the hottest day of the year.

Explanation:

Irony is a figurative language used to express one thing but the opposite happens. It is used mostly in humor and satirical expressions when one wants to criticize.

Among the given sentences, the most clearly ironic sentence is option C. Selling of sweaters is supposed to be an event seen during cold climates. So, selling warm clothes on a hot sunny day is ironic. It's the total opposite of what is the most probable scenario.

Thus, the correct answer is option C.

Give two synonyms of ``gaudy."?​

Answers

Answer:

two synonyms are lurid and garish

Date: 4/7/21

Class: English

Points: 40

Brainliest: Only if Its Correct and if its the best answer

Thanks: Only if it makes sense.

Rate: Only if it helps me/others!!

Answers

Answer:

Two examples of onematopeia are "spilsh spalsh" and "clicks."

Explanation:

These examples make it easier to read the story, as the reader is able to understand what sounds are occuring and what the events sound like. By using this tool, the author makes it easier for readers to relate to the story and feel more like they are in the story.

Thank you for the opportunity good sir, and Go Pack Go!

Answer:

#1, "Splash! Splash!"

#2, "Clicks"

Explanation:

#1, This helps by telling the reader how dolphins sound like when they flap it's tail

#2, This helps by telling the reader how the dolphins sound.

How does Morrie know his health is failing?
A: he sees how far he can walk
B: he sees how much he can eat
C: he times how long he exhales
D: he can no longer talk to Mitch

Answers

B I think is the answer

Which describes the second step when using the SQR3 method to analyze the information in a procedural text?
O Survey others by asking questions.
Summarize the main idea of the text.
O Sort the procedure into steps.
O Ask pertinent questions about the procedure.

Answers

I believe it is the 3rd choice.

SQ3R involves a reading comprehension method which includes survey, question, read, recite, and review. Asking pertinent questions about the procedure is the second step when using the SQR3 method to analyze the information in a procedural text, i.e., option D.

What is procedural text?

The procedural texts provide a series of precise and sequenced steps along with directions with the explanation to the reader about doing something, and also allowing the reader to reach the outcome successfully.

Asking pertinent questions about the procedure is the second step when using the SQR3 method to analyze the information in a procedural text.

Thus, the correct option is D.

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How does Samuel try to befriend Richard

Answers

Answer:

by letting him down gently

Explanation:

To make 8 cups of tomato soup you need 2 pounds of tomatoes. How many pounds of tomatoes do you need to make 32 cups of soup? Show your work using equivalent ratios.
Plz help

Answers

Answer:

8 pounds of tomatoes.

Explanation:

8 cups is equivalent to 1/4 of 32 cups, so to get the full 32 cups of tomato soup, we times however many tomatoes are needed by 4, which is 2 x 4 = 8 cups. This can be shown through equivalent ratios as the ratio of tomatoes to cups of tomato soup when making 8 cups of tomato soup is 2 : 8. Because the 8 represents the cups of soup, we need to find a number that gets 8 to 32. 8 x 4 = 32. because the 8 is now a 32, we need to times the other side of the ratio by 4 also. 2 x 4 = 8. making the ratio for 32 cups 8 : 32. This ratio is also equivalent to the first ratio, of 2 : 8. The 2 : 8 ratio can also be simplified to 1 : 4, which means for every 4 cups, 1 pound of tomatoes is needed. You could’ve worked it out that way but yes I hope that’s an okay answer

1. Write in order the following elements to get a simple future sentence.
Write/ will/ different topics/on/l/articles.​

Answers

i will write different topics on articles.

Using this chart of word roots and affixes, which is the most likely meaning of the word tripod? Prefixes Roots Suffixes mono-: one bi: two tri: three omni: all pro: for, in favor of, forward epi: on, outside se: apart athlonz prize, contest | -able, -ible capable of ped, pod foot -ic like, related to phon, phone: sound -oid resembling spect to look -ant having the qualities of derma: skin -ia condition, world, society hydr. water -ology, -logy, the study of cred to believe, trust -ous full of tone: tone, sound -ence a state or condition O A. The ability to walk on hind legs 0 B. An animal that walks on four legs C. A three-legged stand D. A three-part belief system​

Answers

Answer:

C. A three-legged stand

Explanation:

mood means:
your overall circumstances or condition in life
a highly developed state of perfection
a public disturbance
the prevailing psychological state

Answers


the prevailing psychological state

A
bel
Match each example of an advertisement to the persuasive technique it is using.
A pet food brand claims to use natural
name-calling
ingredients, unlike its competitors.
An ad for perfume suggests the product will
get the viewer a date.
celebrities
An ad to prevent texting while driving shows
an image of a car accident.
fear
A shampoo ad uses a picture of a famous
actor with great hair.
association
Correct!

Answers

Answer : I’m just typing because it’s making me but look at the picture

Answer:

A shampoo as used a picture of a famous actor with great hair - Celebrities

A pet food brand claims to use natural ingredient, unlike its competitors -Name-calling

An ad to prevent texting while driving shows an image of a car accident - fear

An ad for perfume suggest the product will get the viewer a date -association

Explanation:

Took the quiz

What happened to the last receiver-in-training in the Giver

Answers

Answer:

She had too much memories put into her and failed as a receiver

Because the diamond is worth so much, there were policemen nearby.

A. Simple sentence
B. Compound sentence
C. Complex sentence

Answers

Answer: The Answer is C

Answer:

The answer is alphabet C

2. Gram
Grammar
Check your grammar understanding by writing (True or (False)
1. Do you have sister?. Yes, I do.
2. When you
come to Germany?
Last year...
3. When you return
to Japan?
Next year...
4.
You like German food?
Not very much.
5. Do you like dogs?
Yes, I like .......
6. He plays the piano very well, don't he?............
7. Where she live?
Sorry, I don't know.
8. Will you help me today?
Yes,
I'll ...
9. I live in Germany since 30 August 2006.
10. I must get up very early yesterday morning
......
11. Can you do it?
Yes, I think
12.
Did you play tennis?
Yes, I played
13. She got up and run to the door.
14. Do you like a rap music? - No.
15. My eyes
are
bad. I need the glasses,​

Answers

Answer my best way to answer is

Explanation:

Students have the right to know what they will be graded on. t or F​

Answers

True.

It would be unethical if students were being graded on something without being aware.

what is the phone number of yamantumen​

Answers

The phone number to this place is 2094739293

Plz answer this plzz!! Well mark brainliest if you are correct!!!

Answers

Answer:

c

Explanation:

I hope I am right but not sure

Which of the following sets of events is in the correct chronological order?​

Answers

Answer: A. Missouri Compromise, "popular sovereignty", Dred Scott decision handed down

Explanation:

The Missouri Compromise came in 1820 and limited slavery to areas south of the 36°30′ parallel except for Missouri. Popular Soverignity in the form of the Kansas-Nebraska Act repealed this in 1854 and allowed for Kansas and Nebraska to vote on their slavery status.

The widely criticized Dred Scott decision was then passed in 1857 and stated that an enslaved person who had escaped to a free state was still an enslaved person and that African Americans were not citizens.

Identify the correct part of speech of the bold word in the given sentence: This jacket's too big, even with a sweater underneath." underneath is?

Answers

Answer:

verb..................

What is the difference between communication and communication skills?​

Answers

Explanation:

communication is the phenomena of exchanging news,views,opinions,emotions,etc whereas communication skills is the skill,knowledge,ability of communicating or to express the phenomena defined by communication.

Communication-

Communication involves getting information from one person to the other person and expressing yourself. It is the art and process of creating and sharing ideas. Effective communication depends on the richness of those ideas.

Communication Skills-

Communication skills are the tools we develop to improve and make more efficient that interchange of ideas. Advanced communication skills take the basic skills of communication and frame them within a general understanding of how the communication process works. When you understand all of the elements involved when people communicate, they can learn to influence not only your own communication but the communication of others. This is why advanced communication skills are, in essence, leadership skills. They allow you access to ways to guide and direct communication between yourself and another or a group so that you can achieve your goals and outcomes.

Is it harmful to spend too much time on the Internet? Support your answer.

Answers

Yes I new study show if you spend to much Time on the internet you can feel depressed and lonely

Besides the ability to express feminist views, what other benefit did women find in writing for literary magazines?
a) It allowed them to work outside the home for at least part of the day.
b) It allowed them to work at home and care for their families.
c) It gave them the chance to work in other fields, such as teaching.
d) It gave them the opportunity to earn the same amount of money as men.

Answers

Answer:

b) It allowed them to work at home and care for their families.

Explanation:

Besides the ability to express feminist views, the other benefit that women found in writing for literary magazines was that it allowed them to work at home and care for their families.

The feminists found out that they had more freedom because they were working from home and had more time for their families

Answer:

B) It allowed them to work at home and care for their families.

Explanation:

I took the test and got it write

match te sentences 1-5 with the offers a-e. Say the answers aloud.
1I can't afford this book.
2My hands are really cold.
3I don't know how to play this computer game.
4I can't find my dog
5My sister is really angry with me.
a. I'll buy some gloves for you.
b.I'll talk to her.
c. I'll lend you some money.
d. I'll help you to look
e. I'll show you.

Answers

Answer:

1,c

2,a

3,e

4,d

5,b

Explanation:

Hope this helps

i neeed help what is 100+1,000=

Answers

Answer: 1,100!

add them thats all.

The Jacket by Gary Soto Commonlit answers quickly I have brainiest

Answers

Answer: Here are the questions and answers! Thanks and brainliest are always appreciated! Have a terrific day <4

Explanation: Question 1 of 4

Why is the speaker disappointed?

His old jacket does not fit him any more.

His new jacket is too small and does not fit him.

His brother got the leather jacket that he wanted.

✅ He wanted a leather jacket but was given an ugly one.

Question 2 of 4

✅ Spends the rest of his day in a bad mood

He wanted a leather jacket but was given an ugly one.

Question 3 of 4

What happens when the speaker wears the jacket to school?

✅ He believes people make fun of his ugly jacket.

The new jacket helps him do better on quizzes.

His friends try to cheer him up about his ugly jacket.

Girls giggle and ask him where he got his new jacket.

Question 4 of 4

As the speaker grows up.. he

✅ Starts to appreciate the ugly jacket

Select the correct text in the passage.
In which sentence does the author imply that the invention of printing with movable type led to greater
intellectual awakening?
excerpt from "The Printing Press"
The early Greeks and Romans used for their books tablets of ivory or metal or more commity, tablets of
wood taken from the beech or fir tree which was then followed by a material called parchment. This was made
from the skins of animals, particularly sheep or lambs. About the end of the ninth century or the beginning of
the tenth, after Christ, parchment and vellum as material for books gave way to paper. Initially paper produced,
was made of cotton, but during the twelfth century it was produced from linen. It is not known who invented
linen paper, but its introduction was the first great catalyst to book making. About the beginning of the
fifteenth century after Christ, there came over the world an enormous wave of intellectual awakening.
The human intellect began to awake, to stretch itself, to go forth and conquer, which hence brought about
the invention of printing. Before this time, ever since man began to record his thoughts, whether on plank,
stone, or papyrus, on bark of tree, skin of animal, or tablet of wax or paper, every letter was made by hand. The
process was necessarily slow, books were rare and costly, and only the few could have them. But with the
advent of a process that would multiply books and make them cheap, learning was made accessible to the
legion. Before the invention of printing with movable, metal types, a kind of block printing was used. The words
or letters were carved on a block of wood; the block was applied to paper, silk, cloth, or vellum, and thus
impressions were made.
Reset
Next

Answers

The human intellect began to awake, to stretch itself, to go forth and conquer, which hence brought about the invention of printing is the  the correct text in the passage is the invention of printing with movable type led to greater intellectual awakening.

Who are traditional intellectuals?

Traditional intellectuals are individuals who have ties to tradition and to previous thinkers; they are less closely connected to the economic structure of their particular culture and, in reality, believe that they do not belong to any social class and do not subscribe to any particular class discourse.

Thus, The human intellect began to awake, to stretch itself, to go forth and conquer.

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Question 1
What is the rule regarding the use of me or I in a sentence?

Answers

Answer:

The word I is used when the pronoun is the subject of a sentence and me is used when the pronoun is instead the object of a sentence or a clause (meaning when it comes after a verb or a preposition).

Explanation:

Plato / Sample Answer

HELP URGENT PLEASE!!!!!!!

Answers

Answer:

Hurston's purpose in writing "How it Feels to be Colored like Me" is to assert her pride in being black. She pushes back against the idea, articulated by many of her black friends during the Harlem Renaissance of the 1920s, that segregation and racial discrimination harmed the black soul and needed to be addressed.

A lady in a faded gingham dress and her husband, dressed in a homespun threadbare suit, stepped off the train in Boston, and walked timidly without an appointment into the president's outer office. The secretary could tell in a moment that such backwoods, country hicks had no business at Harvard and probably didn't even deserve to be in Cambridge. She frowned. "We want to see the president", the man said softly. "He'll be busy all day," the secretary snapped. "We'll wait," the lady replied.


For hours, the secretary ignored them, hoping that the couple would finally become discouraged and go away. They didn't. And the secretary grew frustrated and finally decided to disturb the president, even though it was a chore she always regretted to do. "Maybe if they just see you for a few minutes, they'll leave," she told him. And he sighed in exasperation and nodded. Someone of his importance obviously didn't have the time to spend with them, but he detested gingham dresses and homespun suits cluttering up his outer office. The president, stern-faced with dignity, strutted toward the couple.


The lady told him, "We had a son that attended Harvard for one year. He loved Harvard. He was happy here. But about a year ago, he was accidentally killed. And my husband and I would like to erect a memorial to him, somewhere on campus."



The president wasn't touched - he was shocked. "Madam," he said gruffly, "We can't put up a statue for every person who attended Harvard and died. If we did, this place would look like a cemetery."


"Oh, no," the lady explained quickly, "We don't want to erect a statue. We thought we would like to give a building to Harvard.”


The president rolled his eyes. He glanced at the gingham dress and homespun suit, then exclaimed, "A building! Do you have any earthly idea how much a building costs? We have over seven and a half million dollars in the physical plant at Harvard."


For a moment the lady was silent. The president was pleased. He could get rid of them now.
Then the lady turned to her husband and said quietly, "Is that all it costs to start a University? Why don't we just start our own?"



Her husband nodded. The President's face wilted in confusion and bewilderment. And Mr. and Mrs. Leland Stanford walked away, traveling to Palo Alto, California, where they established the University that bears their name, a memorial to a son that Harvard no longer cared about.




QUESTION: Why did the president of the university look down upon the couple?

a
A. He thought they were going to cause problems because they looked dangerous.
b
B. He didn't think they were important enough to talk to because they looked poor.
c
C. He had punished their son and felt they were to blame for the trouble he caused.
d
D. He knew them from where he grew up and was trying to avoid them.

Answers

Answer:

B

Explanation:

It's not A because does not think they are dangerous.

Not C because he does not punish their son.

Not D because he did not grow up with them.

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