Answer:
5 + 8 = 13
-6 + -4 = -10
No explaination needed This answer is 1000% correct. Trust me i woould never mess someone up for no reason, not even for my own benefit.
Electromagnetic (EM) waves
So you’d add 5 and 3 so it’s 8 ft/s
You then divide 220/8
So it should be 27.5 seconds.
Sorry about that other guy. Hope this helps!