Answer:
if the slopes are the same then they are parralel not sure about perpendicular
16. 7 per hour.
17.400
18. 19 2/4
19. 107.91
20. 11.8
send ss i cant see it
Step-by-step explanation:
x = 4.5
[ 8.4 · y = 12.6
[ 3 · y = x
y = 1.5
3 · 1.5 = x