Answer: If a ⊥ b and b ║ c, then a ║c
Step-by-step explanation: I substituted a more legible symbol for parallel. I believe that is what the question means.
a will be perpendicular to any line that is parallel to b.
Answer:
x=2
Step-by-step explanation:
2x+x+3=9
2x+x=9-3
3x=9-3
3x=6
The last one: 25%
n= -7