The reason why the bulletin board notice feel nervous is: it was under a tack
In most common cases, the notice that is putted under a tack is intended to be displayed on the board for a pretty long time, highlighting the importance and the urgeny of the notice.
5 seconds
because that is the positive zero of that equation
Answer:
7/15
Step-by-step explanation:
If we're seeing how much pizza they both ate, we would add them together.

Find the common denominator

add

7/15 of the pizza was eaten