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3 years ago

Determine the exact output of the code $str = "The quick brown fox jumps over the the lazy dog"; echo strpos($str, 'fox');

Computers and Technology

1 answer:

LuckyWell [14K]3 years ago

3 0

Answer:

b. 16

Explanation:

The given PHP code segment consists of 2 statements.

$str="The quick brown fox jumps over the lazy dog";

This defines a variable $str and assigns the given text to it.

echo strpos($str,'fox');

This statement prints the location of 'fox' in the text associated with the variable $str.

Upon execution it will print the value 16 which corresponds to the position of 'fox' in the given sentence.

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According to your textbook, which of the following is a consequence of the quick development of new technologies in the digital

kramer

Answer:

E. Traditional leaders in communication have lost some control over information

Explanation:

Due to the quick development of new technologies like Internet, cable etc, traditional leaders in communication have lost some of their control over information. This means that the technological advancement is disruptive for traditional leaders. Following examples are given to elaborate the consequences of advancement in new technology in digital era.

With the establishment of new channels like CNN, Fox News and internet bloggers, the old television network news shows like ABC, NBC lost their audiences.

Email technology has taken on some of the postal service's responsibilities and outperforms attempts to control communication outside national borders. This replaced the postal mail which used to take months to reach the destination.

The Internet and social media websites are transforming the way in which we access and interact with media culture. Before internet most people would watch popular TV shows in at the time they originally aired it. This scheduling gave common media interactions at specific times within our society. We still watch these TV shows but now we watch them at our own ease through websites. Using You tube we can upload our own media instead of viewing mainstream television.

8 0

3 years ago

Find the inverse function of f(x)= 1+squareroot of 1+2x

Svetllana [295]

Answer:

Therefore the inverse function of $f(x)=1+\sqrt{1+2x}$ is $\frac{x^2-2x}{2}$

Explanation:

We need to find the inverse of function $f(x)=1+\sqrt{1+2x}$

Function Inverse definition :

$\mathrm{If\:a\:function\:f\left(x\right)\:is\:mapping\:x\:to\:y,\:then\:the\:inverse\:functionof\:f\left(x\right)\:maps\:y\:back\:to\:x.}$

$y=1+\sqrt{1+2x}$ $\mathrm{Interchange\:the\:variables}\:x\:\mathrm{and}\:y$

$x=1+\sqrt{1+2y}$

$\mathrm{Solve}\:x=1+\sqrt{1+2y}\:\mathrm{for}\:y$

$\mathrm{Subtract\:}1\mathrm{\:from\:both\:sides}$

$1+\sqrt{1+2y}-1=x-1$

Simplify

$\sqrt{1+2y}=x-1$

$\mathrm{Square\:both\:sides}$

$\left(\sqrt{1+2y}\right)^2=\left(x-1\right)^2$

$\mathrm{Expand\:}\left(\sqrt{1+2y}\right)^2:\quad 1+2y$

$\mathrm{Expand\:}\left(x-1\right)^2:\quad x^2-2x+1$

$1+2y=x^2-2x+1$

$\mathrm{Subtract\:}1\mathrm{\:from\:both\:sides}$

$1+2y-1=x^2-2x+1-1$

$\mathrm{Simplify}$

$2y=x^2-2x$

$\mathrm{Divide\:both\:sides\:by\:}2$

$\frac{2y}{2}=\frac{x^2}{2}-\frac{2x}{2}$

$\mathrm{Simplify}$

$y=\frac{x^2-2x}{2}$

Therefore the inverse function of $f(x)=1+\sqrt{1+2x}$ is $\frac{x^2-2x}{2}$

4 0

3 years ago

An important task that the operating system performs is ____, which keeps track of the files stored on a computer so that they c

finlep [7]

#1) An important task that the operating system performs is ____, which keeps track of the files stored on a computer so that they can be retrieved when needed.
Answer: File Management System. Keeps track of where files are stored and determines how the files are stored following the operating system file allocation policies. It uses available storage space efficiently for files and creates a record/log of all file usage. It allocates a file to a user if is free, and if they are permitted access to it. Then de-allocates file when the user is finished with it.

8 0

3 years ago

What happens if part of an ftp message is not delivered to the destination?

Oliga [24]

The message is lost when an FTP message is not delivered to its destination because FTP doesn't use a reliable delivery method.

FTP is an abbreviation for file transfer protocol and it can be defined as a type of server that's designed and developed to store and provide files for download, as well as sharing between two or more users on an active computer network.

Generally, the message is lost when an FTP message is not delivered to its destination because FTP doesn't use a reliable delivery method.

Read more on FTP here: brainly.com/question/20602197

#SPJ12

4 0

2 years ago

Allie is working on the development of a web browser and wants to make sure that the browser correctly implements the Hypertext

creativ13 [48]

Answer:

The answer is "Option c"

Explanation:

The W3C is the framework for the creation of software and the online standards through which sites and webpages work, and to turn into an authoritative source of information, she will work towards getting a reliable and credible source of knowledge from the "World Wide Web Consortium", and the wrong option can be described as follows:

In option a, It is wrong because this organization prepares and publishes all the electronic technologies.
In option b, It is wrong because it is the laboratory of physics, which is not useful in web development.
In option d, This technology is used in TCP/IP protocol, that's why it is incorrect.

3 0

3 years ago