What is a variable? Why is it helpful in programming?

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Answer 1

Answer:

Variables can represent numeric values, characters, character strings, or memory addresses. Variables play an important role in computer programming because they enable programmers to write flexible programs. Rather than entering data directly into a program, a programmer can use variables to represent the data.

Explanation:

Related Questions

Hey guys!

Just a quick question I’m not 100% sure about

T/F

ROM stores data that the user is currently working on.

Thank you so much!!

If you can’t help here iz a happ kat :)

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Answer:

YESSS!!

Explanation:

LUV THE CAT

Answer:

beautiful kitty........

What does the term Gestalt mean? A. image B. graph C. big D. part E. whole

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Answer:

Part E

Explanation:

an organized whole that is perceived as more than the sum of its parts.

Answer:

E. whole

Explanation:

i got it right

A sample of 30 households showed that the sample mean of back-to-school spending is $622.85. It is believed that back-to-school spending is normally distributed with a population standard deviation of $65. An analyst wishes to test if the average back-to-school spending differ from $606.40 per family predicted by the trade group at the 5% significance level.

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The text editor is not letting me submit my typed answer.Please check attachment

The pvalue is 1.646 which is greater than the level of significance 0.05

This tells us to accept the null hypothesis.

P-value is 0.1646 > significance level.

We do not reject the null hypothesis.

So we can not say that average back to school spending is different from 606.4 dollars per family

Which components are involved with input? Output? Processing? Storage?

Answers

Answer: Output

input keyboard mouse joystick graphics tablet trackball touchpad touchscreen microphone sensor

Processing processor (CPU) processor (GPU) memory motherboard

Output printer monitor touchscreen plotter speakers headphones motor data projector

Explanation:

In Computing the various component responsible for input, Output, Processing, Storage is listed bellow

Input: They are devices used to provide data for processing

keyboards, mouse, scanners, cameras, joysticks, and microphones.

Output: These are devices that send already processed data

monitors, printers, speakers, headphones, projectors, GPS devices, sound cards, video cards.

Processing: Processing devices are the components responsible for the processing of information within the computer system.

CPU, memory and motherboard.

Storage: Storage devices are components that allow data to be stored within a computer system.

Hard Disk Drive, ROM, RAM

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