Answer:

Step-by-step explanation:

I am also not sure, because I also asked this question.
The rule is that if multiplying with powers you will add the m power to the n power and then that will be your answer .
Answer:
7 - 2.25
= 7 - 2
= 5 - 0.25
= 4.75
9 - 1.9
= 9 - 1
= 8 - 0.9
= 7.1
I hope this helps and that you have a great day!
<em />
<em>Ravenna</em>
Answer:
Neither
Step-by-step explanation:
They do not form a 90° angle(so it's not perpendicular)
And they touch(so it's not a parallel)