Samuel jnants to conduct a customer satisfaction survey for his restaurant. He knows that he must randomly select a sample of his customers in order to administer the survey, but he is uncertain about the sample size that is needed. Which of the following must be true about Samuel's sample in order to produce a well-designed and well-conducted survey? O A. Samuel's sample must be the entire population of customers.
OB. Samuel's sample should only be his regular customers.
O C. Samuel's sample should be chosen at random and be large enough to represent the entire customer population. OD. Samuel's sample should be chosen at random and be exactly one-half of his customer population.​

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)

arc length = radius * x ( in radians)

6 * pi = 18 * x

divide by 18 on each side

6 pi / 18 = x

pi/3 = x

the angle is pi / 3 radians

or   60 degrees