x, in the second equation.
It is a quadratic equation with one unknown variable, x which has no real roots.
In the equation 5t = 25, t is simply a variable that you are solving for. You can replace "t" with a variable you are more comfortable with, such as "x", leaving you with 5x = 25. The equation means: 5 times what equals 25? To get this, you would divide both sides of the equation by 5, leaving it as (5t)/5 = 25/5. The 5 on in the denominator and numerator on the left side of the equation would cancel out, leaving you with t = 25/5, which you can simplify to t = 5.
13
Substitution property.
In the equation ( q = mc\Delta T ), the variable ( q ) represents thermal energy. It quantifies the amount of heat energy absorbed or released by a substance, where ( m ) is the mass, ( c ) is the specific heat capacity, and ( \Delta T ) is the change in temperature.
k is the variable.
"Wat" is the variable.
Isolating a single variable in terms of the rest of the equation provides a solution to that variable. That is, if you know the equation that equals the variable, then you can figure out its value.
To solve this system of equations using substitution, we can isolate one variable in one equation and substitute it into the other equation. From the second equation, we can express x in terms of y as x = 4 + 2y. Then, substitute this expression for x into the first equation: 4(4 + 2y) - 3y = 1. Simplify this equation to solve for y. Once you find the value of y, substitute it back into x = 4 + 2y to find the corresponding value of x.
The variable c
15x = 60 The variable is x.
x+y=5
14!!
You cant solve it unless it is an equation. To be an equation it must have an equals sign.
-2
y is the variable
An equation in the variable n.