What is the mean score of the vaulter?

To find the mean score, add all the numbers together and divide by the amount of numbers there is.

6.856 + 7.923 + 8.135 = 22.914

Divide 22.914 by 3

22.914/3 = 7.638

7.638 is your answer

hope this helps

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)