The equation P = 6s represents the perimeter P of a regular hexagon with side length s. What is the perimeter of a regular hexag
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Mean of data = sum of values ÷ number of data
We have three values; 84, 87, and
Sum of values =
= 
We want the value of to give mean between 85 and 90 inclusive
Hence, the value of is between 84 and 99 inclusive
We have three values; 84, 87, and
Sum of values =
We want the value of
Hence, the value of