Answer:
to find the mean add the numbers up and divide by the number of numbers
[sqrt (27) + sqrt(48) + sqrt(75)]/3=
[sqrt(9)sqrt(3) + sqrt(16)sqrt(3) + sqrt(25) sqrt(3)]/3=
[3sqrt(3) +4sqrt(3) +5sqrt(3)]/3=
[12sqrt(3)]/3=
4 sqrt /3
12 cos 30 + 2 tan 60
12 (sqrt(3)/2) + 2(sqrt(3))
6sqrt(3) +2sqrt(3)
8sqrt(3)
Explanation: