Answer: 0.0099
Step-by-step explanation:
These lines are perpendicular because y = -6 is a horizontal line with a slope of 0 and x = 6 is a vertical line with an undefined slope
Answer: B) 
C) 
Step-by-step explanation:



Thus, Option B and C is giving the result 4b,
Therefore, they are the expressions that are equivalent to 4b.
Hello :
the answer is :
<span>an = 6 − 4(n − 1); all integers where n ≥ 1
because :
if n=1 a1 = 6-4(1-1)=6
if n=2 a2 = 6-4(2-1)=2
the common difference is : a2-a1 = 2-6=-4</span>