Answer:
C
Step-by-step explanation:
Parallel line slopes are always the same.
The internal angle sum of a quadrilateral is :
C. 360°
The sum of internal angles of a polygon is determined by a formula :

where n represents number of sides.
In a quadrilateral there are four sides,
So, plugging 4 in the formula :
_____________________________

Answer:
3 1/2
Step-by-step explanation:
5--2=7
6-4=2
7/2= 3 1/2
Answer:
(2, -16).
Step-by-step explanation:
(x - 6)(x + 2)
Convert to vertex form:
Expanding the parentheses we have:
x^2 + 2x - 6x - 12
= x^2 - 4x - 12
Completing the square:
= (x - 2)^2 - 4 - 12
= (x - 2)^2 - 16
So the vertex is (2, -16),
Answer:

Step-by-step explanation:
The equation of a circle follows the general equation 
Since the center of the circle is (-6, 5), we progress to the formula equation 
Since this is a circle, the distance between (-6, 5) and (-1, 1) is the radius of the circle.

So we can obtain the equation 