A quadratic equation is an equation of the form ax^2 + bx + c =0.
Given the equation: -2 = -x + x^2 - 4, we write it in the form of a standard quadratic equation as follows:
x^2 - x - 4 + 2 = 0
x^2 - x - 2 = 0
Comparing this with the standard quadratic equation gives that a = 1, b = -1 and c = -2
Therefore, the correct substitution of the values of a, b and c from the given equation into the quadratic formular is: <span>x = [-(-1) + or - sqrt((-1)^2 - 4 x 1 x -2)] / (2 x 1)</span>
Density = Mass / Volume = 2000/0.5
Density = 4000 Kg/m^3
There are 62.9 students and 11.1 teachers.
Weird, I know. But my math is bullet-proof.
Answer:
(0,2)
Step-by-step explanation:
The solution would just be where these two functions cross, which is at the point (0,2) in this case.