Answer:
R = 18.5
Step-by-step explanation:
Answer:
A, D, E
Step-by-step explanation:
I got it right.
Answer:
depends on the cases. they all have different uses
Answer:
(-1, -1) and (2, 2)
Step-by-step explanation:
Substitute for y in the first equation and solve the quadratic.
x = x^2 -2
x^2 -x -2 = 0 . . . . subtract x
(x -2)(x +1) = 0 . . . .factor
Solutions are the values of x that make these factors be zero:
x = 2, x = -1
Since y=x, the solutions are ...
(x, y) = (-1, -1) and (2, 2)
6
6-(-2)=8
This pretty much turns to an addition since its minus a negative number.