Answer:
77 "
Step-by-step explanation:
'mean' is the average of all of the heights
( 84 + 84 + 77 + 63 + 70 + 70 + x) / 7 = 75
x = 77
Answer:
The builder should order 129.54 meters of steal.
Step-by-step explanation:
I just went on google and typed in "ft. to meters converter".