Privacy, anonymity, and freedom of expression are all interrelated.

Jeff decides that he would pay as much as $3,000 for a new laptop computer. He buys the computer and realizes consumer surplus o

Lady_Fox [76]

Jeff pay $2,300 for his computer.

b. $2,300

Explanation:

Consumer surplus can be defined as the amount that the consumer is willing to pay for a product or a service. The word surplus is a synonym for something extra or excess. It corresponds to the extra benefit that the consumer gets while buying something which may be the result of some discount, sale, or negotiation.

Jeff realizes a consumer surplus of $700 while purchasing a laptop of $3000. As the consumer surplus is $700,

the amount Jeff has paid for the laptop is: $3000 - $700

: $2300

6 0

3 years ago

Peter Chen developed ERDs in 1976. Since then Charles Bachman and James Martin have added some slight refinements to the basic E

shusha [124]

Answer:

Check the explanation

Explanation:

In RDBMS relational database, the keys play an essential role in making the database reliable and relational in which two or more relations (tables) can be divided into a range of relations with the use of diverse types of keys due to which the redundancy decreases and flexibility of data storage increases.

The following are the usage of keys in a database:

It helps in identifying a specific record that is present in the table.

It is used in minimizing the redundancy from the tables.

It is used in removing the multi-valued attributes from the relations.

it helps in connecting one table with others by using Foreign keys.

It is used in maintaining the uniqueness of the data stored in the database.

It helps in identifying the relationship between two or more tables.

Types of keys in a relational database:

PRIMARY KEY: It helps in identifying each record uniquely due to which the redundancy of data can be minimized.

FOREIGN KEY: It is a kind of referenced key that helps in making a relationship between two or more tables. It helps in fetching records by combining two or more tables with the help of different joins.

SUPER KEY: It is a combination of two or more keys that can be selected as primary. It may contain those columns which have repeated values.

COMPOUND KEY: It is a combination of those columns which may not be used independently as the identification of unique records but their combination does.

CANDIDATE KEY: It is a kind of a super key that does not contain repeated records. A primary key can be chosen from candidate keys.

8 0

3 years ago

IoT is the interconnection of what? Hardware Networks Everyday devices Cables

Dominik [7]

Answer:

Everyday Devices

Explanation:

As we know that Internet of Things (IOT) include connected security systems, thermostats, cars, electronic appliances, lights in household and commercial environments, alarm clocks, speaker systems and vending machines.

3 0

3 years ago

Question: 2

AleksandrR [38]

Answer:

The answer is C.) Molecules

I hope this helps! ^-^

7 0

2 years ago

"A collective of online communications channels that enables users to create and share content and participate in a community-ba

DIA [1.3K]

Answer:

A collective of online communications channels that enables users to create and share content and participate in a community-based input, interaction, and collaboration, is called Social Media.

3 0

3 years ago