A radio-active isotope used in medical imaging has an exponential decay that can be modeled as:
A = A0e-0.25t where A is the amount of the isotope at the end of t hours,
A0 is initial does of isotope given, and t is time (in hours).
How many hours will it take for the ½ of the isotope to decay? Round
answer to the nearest hour.

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aloha~! my name is zalgo and i am here to you out on this amazing day. to answer your question, yes, nonzero numbers can have a greatest common factor and that would be 1. still don't get it? let me considering every number is divisible by 1 and hence every number has 1 as a factor of theirs. so, if 2 nonzero numbers didn't share any gcf (greatest common factor), they would still have a factor in common and that would be 1.

i hope that this ! : p

"stay and stay proud! " - zalgo

(by the way, do you mind marking me as brainliest? i'd greatly appreciate it! mahalo! x3)

there were a lot of them but the first one to pop up on a google search was bts