Must there be at least one friday the 13th in every
year? use division to answer this question. (you
may answer only for years that aren't leap years.)
to get started on solving this problem, answer the
following: if january 13th falls on a monday, then
what day of the week will february 13th, march
13th, and so forth, fall on? use division with
remainder to answer these questions. now con-
sider what will happen if january 13th falls on a
tuesday, a wednesday, and so on.

answer asap.

he spend 5.1 minutes chatting with his friends.

step-by-step explanation:

2/5+1/2=9/10

6/1-9/10=5.1

x=30

step-by-step explanation:

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)