Answer:
C
Step-by-step explanation:
Add 3 to both sides, so you will have
x^2 - 8x + 13 + 3 = 3
x^2 -8x + 16 = 3
And now the left side is a perfect square trinolmial: (x-4)^2.
20= -B/0.2
multiply -B/ 0.2 both sides
= -4
Answer:
acute = 30,right angle = 90,obtuse = 135,line = 180
If the relationship between two quantities is a proportional relationship, this relationship can be represented by the graph of a straight line through the origin with a slope equal to the unit rate.