Name the property used in each equation. then find the value of n.

1. 5+0=n

2. 7+(4+6) = 7+n

The vertex of this parabola is at (-2,-3). when the x-value is -1, the y-value is -5. what is the coefficient of the squared expression in the parabola's equation?

X2 + y 2 = 36 x + y = 6 solve the system of equations.

Given a: b and b: c, find a: b: c. write the ratio in simplest form. a: b=6: 10 and b: c=21: 33