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What does 'x' stand for?
Yes, x stand for multiplication sign like 6x7= 42 that is when x stands for a multiplication sign, x can also stand for a variable. A variable is a letter or number that represents a changing quantity.
What does the x in algebra stand for?
The (unknown) x (I suppose that's what you mean) is a variable. It's commonly used to represent any number. For example if you have the equation 3x+2=5, x represents the number which will verify the equation. x can be used with equations, functions etc.
What is x and y stand for in Animals?
Whatever it want's to stand for
What irrational number can be added to pi to get a sum that is rational?
Minus pi. Or minus pi plus any rational number. Here is how you can figure this out (call your unknown number "x", and let "r" stand for any rational number):x + pi = r To solve for "x", simply subtract pi from both sides. That gives you: x = r - pi
How do you write a equation for the opposite of a number is -9?
Call your number any variable, for example x. Then: "A number": x "The opposite of a number": -x "Is": the equal sign. "The opposite of a number is -9": -x = -9
