2 years ago

All of the members of the harvey family are very

Mathematics

1 answer:

vivado [14]2 years ago

8 0

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

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