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 select the best answer from the choices provided a b c d

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.

4

step-by-step explanation:

6 (donuts) divided by 3 is 2.

so 2/3 means 2 times 2, which is 4/6.

you get two and your friend gets four.

y = i/2 xtnop + (3i/2 tnop+ 1)

step-by-step explanation:

the picture is the step by step explanation.