Question

What is a variable? a. A variable is an unknown number or value represented by a letter c. A variable represents a change in value b. A variable always represents the total amount d. A variable is always represented by the letter x Please select the best answer from the choices provided A B C D

Answer 1

ANSWER

a. A variable is an unknown number or value represented by a letter

EXPLANATION

In mathematics, we use letters to represent an unknown quantity or number.

For instance, we can use the letter , t, to represent time taken to cover a given distance.

We can use the letter , s, to represent displacement or distance covered by an object.

The letters that we use to represent the unknown values or numbers are called variables.

The correct answer is A.