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______are used to represent an unknown quantity in a mathematical expression.

Sagot :

KimYuriiidn

Answer:

Variables are used to represent an unknown quantity in a mathematical expression.

Step-by-step explanation:

  • Variables are used to represent an unknown quantity in a mathematical expression.
  • For example : x + 2 = 4, here x is the variable.
  • We can denote variable by any alphabet i.e, a,b,c,d etc.
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