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30 April, 03:11

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

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Answers (1)
  1. 30 April, 03:30
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    A variable is an unknown number or value represented by a letter.

    For example find the missing variable:

    2x - 3 = 9
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