2006-09-11 10:41:17 · 10 answers · asked by happyperson 2 in Education & Reference ➔ Homework Help
A variable such as "X" can be any number amount or other variable such as "Y".
or from a well known dictionary:
10. Mathematics, Computers. a. a quantity or function that may assume any given value or set of values.
b. a symbol that represents this.
2006-09-11 10:46:21 · answer #1 · answered by Anonymous · 0⤊ 0⤋
A variable is like the answer you want to get when figuring out a problem.
For example, if someone says, "If I gave you a $20 bill and told you to fill up the gas tank, and gas costs $3 per gallon, how many gallons would you get?" Here, if we call the variable X, the equation is 3*X = 20, or X = 6.66 (divide both sides by 3).
It's a variable because we can change the facts in the equation and still solve for it, yet call it the same thing.
Say that gas was now $2.50 a gallon. The equation would now be 2.50 * X = 20, or X = 8 (divide both sides by 2.50).
Hope this helps!
2006-09-11 17:46:32 · answer #2 · answered by Anonymous · 0⤊ 0⤋
A variable is usually a letter that represents an unknown number. For example, you know that 1+1=2.
If you didn't know that, then you could write it like this: 1+1=a. "a" is a variable.
With logic, you can figure out that a=2. So, you can also use it like this: a -1=1.
Now that you know that "a" equals 2, you can use it in the place of 2, anytime you want.
Now that you know that
2006-09-11 17:49:51 · answer #3 · answered by Privratnik 5 · 0⤊ 0⤋
A variable is something that varies in an equation. It's the letter in the equation. Like 2y+1=3, y is the variable.
2006-09-11 17:43:43 · answer #4 · answered by Wendy K 2 · 0⤊ 0⤋
A variable is an unknown. For ex. 3+X=5 You don't know what X stands for, so it's an unknown/variable.
2006-09-11 17:44:25 · answer #5 · answered by LaLa 2 · 0⤊ 0⤋
variable is a letter(usually X) that stands for a number in an equation. you solvew the equation to find the number thats it stands for
2006-09-11 17:44:02 · answer #6 · answered by Jeff L. 3 · 0⤊ 0⤋
hey! you in seventh grade? me too! a variable is like if you had a math problem, and there is a letter in it then the letter would be the variable.
2006-09-11 17:45:10 · answer #7 · answered by xxbeauty_n_brainsxx 2 · 0⤊ 0⤋
a variable is a number that is being solved for like x or y, and it doesnt have a real value till you find it
2006-09-11 17:43:31 · answer #8 · answered by Jake 2 · 0⤊ 0⤋
a variable is the number you use such as an x until you find the real solution to replace it.
2006-09-11 18:09:09 · answer #9 · answered by ladynamedjane 5 · 0⤊ 0⤋
it is a letter that represents a number
2006-09-11 17:44:04 · answer #10 · answered by Brandon K 2 · 0⤊ 0⤋