It is a quadratic equation with one unknown variable, x which has no real roots.
d = r t t = d / r
A mathematical expression in its' most simplistic form, merely assigns a value to a variable. Don't confuse an expression with an equation. An equation requires a solution. An expression cannot be "solved". It only allows you to determine the value of a variable. This is the expression in words "x is equal to 3" (X is the variable which is equal to the constant number 3) This is the expression in numbers "x=3" The expression in words "y is equal to 6" (Y is the variable which is equal to the constant number 6) The expression in numbers is "y=6" I hope you understand now.
Add the two equations together. This will give you a single equation in one variable. Solve this - it should give you two solutions. Then replace the corresponding variable for each of the solutions in any of the original equations.
4 multiplyed by a number (Variable) plus 5 multiplyed by a number (V) equals 15 4v + 5v = 15 15/5 = v 15/4 = impossibility >_< Sorry :~) v = ImPoSiBiLiTy
7a2(a + 1)(a - 1)(a2 + 1)
In the right circumstances any variable.
k is the variable.
"Wat" is the variable.
This answer applies to programming languages in general. The equals sign is used for assignment. For example, the code "$variable = 1" assigns the value of 1 to the variable $variable. If you want to test whether values are the same (equality) the double equals sign is used. For example, when you want to verify that $variable has been assigned the value of 1 you would use: $variable == 1
They define a variable by saying n equals some value.
15x = 60 The variable is x.
6 x 34?
The variable is x.
The variable c
This is an instruction to increment the value of a variable by 1 (in this case, either the variable count or the variable total).
Sort of. Once it is set to 100, it is no longer a variable.