Question

Which of the following statements about a variable are true?

A variable is represented by a letter.
A variable cannot be subtracted.
A variable represents a quantity.
A variable cannot be multiplied.

Answer 1

Answer:

A and C

Step-by-step explanation:

A variable is represented by a letter.

Example in equation 2x + 4

variable is represented by x

So it is TRUE

A variable cannot be subtracted.

2x - X = X

here variable is subtracted so the statement is FALSE

A variable represents a quantity.

2x = 2

X = 1

so X is representing a quantity which is 1.

So the statement is TRUE.

A variable cannot be multiplied

X * X = x^2

so variable x was multiplied

So the following statement is FALSE.

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Answer 2

A variable speaks to by letter conjointly it speaks to an amount, these are the articulations about a variable that's true.

Explanation:

• A variable could be an amount that will alter inside the setting of a scientific issue or an experiment.
• A variable represents a concept or a thing whose greatness can be spoken to by a number or value.
• A variable is additionally a letter that speaks to a number or amount whose esteem may change.
• It moreover speaks to an obscure number of obscure values or obscure quantities.
• The factors are too utilized within the case of arithmetical expression or polynomial math.