You can tell if two lines are parallel, perpendicular, or neither by looking at their slopes and :
- If , i.e. if the two lines have the same slope, the lines are parallel
- If , the lines are perpendicular
- In all other cases, the lines are not parallel nor perpendicular.
Given two points of a line, the slope is defined as the ratio between the y and x variation:
So in this case, we have
Since the two slopes are the same, the two lines are parallel.
A.) 18 m
lets say u star at point A (0m from the start) it then moves to point B (20m from the start (20x1=20)) then it moves to point C (2m back from B making it 18m from A (.5x4=2))
So assuming scaled down it is
1:1.5 or
2:3
so
72 is the 3 units
divide 72 by 3
72/3=14
14 times 2=28
the surface area=28 in^2
Answer: C
i think its c hope i helped you
Step-by-step explanation: