find the smallest number which must be added to 2300 so that it becomes a perfect square (please dont spam for points or i will
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The correct answer is 12
Set up a ratio and then solve. See paper attached. (:
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