(ii) Round off the number of seconds in an hour to 1 significant figure. 4000 A plane travels at a speed of 212 mph. b) By rounding 212 to 1 significant figure and using your answer to part (ii), work out an estimate for the number of seconds the plane takes to travel 1 mile.

what

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)