Answer:
A. Lines m and n have the same slope so they are parallel.
Step-by-step explanation:
16 - 40u - 8v
(- 2 + 5u + v)(- 8) ← multiply each term in the parenthesis by - 8
= 16 - 40u - 8v
sqrt(13^2)
this is the radical form of 13^(5/2)
Answer: 9