Answer:
mean = 43
Step-by-step explanation:
the mean is calculated as
mean = = = = 43
The Mean is 43
If you need me to explain how I got there- I would be happy to ^w^
False, they take form of a U shape
5 students
.............,
53=20+x
Subtract 20 from 20 and 53
33=x
Hope this helps!
P.S.
Nice tab theme :P