Answer:
a and c would also be perpendicular
Step-by-step explanation:
because a║b and b⊥c you would use the transitive property of equality.
Answer: 900 boxes
Step-by-step explanation: When you take 9,000 and divide it by the number of books in a box(10) you get 900
6x4=24 for 1 side
24x5=120 for total surface area of I'm not mistaken...