2007-09-28 15:15:50 · 5 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
X is the most commonly used variable for maths equations because historically, X has been used to represent 'unknown'. X-rays are called X-rays because when William Roentgen discovered the rays, he had no idea what they were and named them X for unknown.
2007-09-28 15:20:46 · answer #1 · answered by Alex 4 · 2⤊ 0⤋
Hi:
It use to represent the Unknown value or quality in Algebra the Reason for this is from the 1700's when people had to graph the equations out on a X,Y graph in order to solve there math problems ( until they learn to tranpose numbers and letter to find the answer) . Today almost any letter in the Alphabet can be use to represent any number however due to the fact; we human being are creatures of habit; we use X as the variable to find our unknown answer in math
2007-09-28 23:25:39 · answer #2 · answered by Anonymous · 0⤊ 0⤋
X is used for being an unknown number.
In most problems you solve for X. which is when they give you the problem then you have to find out what x is. But otherwise X is an unkown number which you solve for in problems.
2007-09-28 22:39:24 · answer #3 · answered by Anonymous · 0⤊ 1⤋
because x equals y and y is the most commonly asked question
2007-09-28 22:22:29 · answer #4 · answered by Anonymous · 1⤊ 3⤋
Dewd.... I -like- that answer âº
Ya got -my- vote.
Doug
2007-09-28 22:31:57 · answer #5 · answered by doug_donaghue 7 · 0⤊ 1⤋