Wanna be my friend if not okay then

Given: m∠apc = 27°, m dc = 27° find: m ab

28. the new systematic nomenclature was so ( that many chemists preferred to ( the older trivial names that were at least shorter. at least, that is the ostensible reason. actually, tradition seems to carry more weight than ( with some scientists.

Jerrold has to buy 12 copies of a textbook which costs $36.25 per copy. how much must he spend for them?