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The answer is variable
A variable
Because, x is a variable, so it can mean any number ever known. It is called the "Unknown Quantity" simply because it represents the number that is not known in the equation. For exampe x+1=y So x and y are variables, each represents a number, if y=2 then it wold be x+1=2 and then you can figure out the "Unknown Quantity" which is 1.
A variable is a symbol that represents an unknown or changeable number, typically a letter such as x, y, and z.
A variable is assigned to represent an unknown quantity.
Variable
The answer is variable
A variable
the comparison of unknown quantity against fixed with known quantity is called measurement.
In mathematical expressions, a variable (a letter used to represent a certain value) represents an unknown or changeable value. It is often the variable x.
a variable
Which phrase describes an unknown or change ability auanty
by "Changeable" do you mean blending? if so the Chameleon
able is the root in the word changeable
An unknown or changeable quantity is a variable. We use variables when we don't know what a certain amount is, and they're usually referred to as "x," or "y."For example, if I had a problem where I needed apples, had $15, and knew that each apple was $1.50, I would use a variable to see how many apples I could buy (because right now that's an unknown number). I could solve it by writing 1.50x =15 to find my answer (which is x =10).
x= the unknown
changeable