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Leona [35]
2 years ago
7

The Spinning Jenny reduced the number of workers necessary to _______. a.remove cotton seeds from fibers b.pump water from the m

ine c.plant seeds in a field d.turn yarn into cloth
Computers and Technology
1 answer:
bazaltina [42]2 years ago
5 0

The answer is D: Turn yarn into cloth.

During the industrial revolution, a number of new inventions in the textile industry greatly impacted this industry. However, it was the invention of the Spinning Jenny that is credited a lot. It helped move the textile industry from homes to factories and made wool spinning easier and faster. This invention, however, impacted the labor workforce. It reduced the amount of work needed to produce yarn. One worker was able to work 8 or more spools at once and rose to 120 due to technological advancements.

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Charlie has a large book collection. He was keeping track of it in a spreadsheet, but it has grown big enough that he wants to c
zepelin [54]

Answer:

Check the explanation

Explanation:

Ans 1) storing the data in one single row comes with its own barriers and that is if you delete one of the record in the spreadsheet, all the equivalent records which you didn't wanted to delete would be deleted. For take for instance, if you wish to delete the record of author "James Taylor" then all the books he has written would also be deleted from the spreadsheet.

Ans 2) In 1NF, all row is expected to have only 1 tuple, but here in this spreadsheet the title field for Author "James Taylor" has 2 books, so it would be separated into single rows.

Ans 3) The table in the attached image below doesn't delete with Delete anomaly, i.e., for author "May Norton" if you delete this record, then the only book written by her would be deleted.

So, you have to convert this table into 2NF.

Make separate tables for Author and Book

Author(Author Name, Author Country)

Books(Author Name, Book title, Publisher, Publisher Location, Year, price)

This cannot be normalized any further.

3 0
1 year ago
Sarah is creating and formatting a newsletter for her school. Which page layout rules should she consider when doing this?
lorasvet [3.4K]
Hey!

I believe the answer to 1. Should be A. Rule of Thirds.
6 0
2 years ago
Read 2 more answers
What is retrieved from a search containing two terms separated<br> by the AND operator?
egoroff_w [7]

Answer:

A AND B= 1 or 0

1 1  1

0 1  0

1 0  0

0 0 0

So, as explained above if both are 1 we then only get 1, or else we get 0 always in case of AND which is a logical operator, whose output can be 0 or 1 only. This is being depicted above.

Explanation:

If both are 1 we get 1 or always else, we get the output =0.

8 0
2 years ago
Write a class named Employee that has private data members for an employee's name, ID_number, salary, and email_address. It shou
mario62 [17]

Solution :

class Employee:

   #Define the

   #constructor.

   def __$\text{init}$__($\text{self, nam}e$,  ID_number, $\text{salary}$, email):

       #Set the values of

       #the data members of the class.

       $\text{self.nam}e$ = name

       $\text{self.ID}$_number = ID_number

       $\text{self.salary}$ = salary

       self.email_address = email

#Define the function

#make_employee_dict().

def make_employee_dict(list_names, list_ID, list_salary, list_email):

   #Define the dictionary

   #to store the results.

   employee_dict = {}

   #Store the length

   #of the list.

   list_len = len(list_ID)

   #Run the loop to

   #traverse the list.

   for i in range(list_len):

       #Access the lists to

       #get the required details.

       name = list_names[i]

       id_num = list_ID[i]

       salary = list_salary[i]

       email = list_email[i]

       #Define the employee

       #object and store

       #it in the dictionary.

       employee_dict[id_num] = Employee(name, id_num, salary, email)

   #Return the

   #resultant dictionary.

   return employee_dict

6 0
1 year ago
HackerCards is a trendy new card game. Each type of HackerCard has a distinct ID number greater than or equal to 1, and the cost
joja [24]

Answer:

I don't know if this is right output is {1,3}

Explanation:

5 0
1 year ago
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