What happens when two identical waves are inverted phase

Well i might get reported for putting this out here buutt why do we all have to bow down to a greater being? yes i accept that there is someone higher that keeps most people going but for me its like something to throw to keep one in their what is the purpose of a religion and why do they always throw that if one dosent obide by the lord he will shun them?

Most rules and tapes are marked in increments of inches to lay out joists, studs, and rafters. a. 8 and 10 b. 26 c. 30 d. 12 and 16

Examine the piece above. what is the subject matter in this piece? what is the content?