Answer:
'∂' -- means a partial differential
'Δ' -- means a change in some variable.
'σ' --means 'sum' and 'deviation'.
The text says something about the world turning so maybe the equation has something to do with that? Maybe it is the equation for the earth's rotation. Sorry I can't find anything else, but I hope this helps a bit!
A half a dollar is 50 cents. If you want to use quarters, you would need 6 more quarters to make 2 dollars.
Answer:
18 books per box! :) hope I helped
Answer:
(5√5)(6√4) = 5 * √5 * 6 * 2 = 60*√5
