Math, asked by kaur7388, 8 months ago

The sum of (3x+5) observation is
9x²-30x+25 .Find the mean of the observation

Answers

Answered by deadline15

0

Answer:

Mean = sum of all observations/

total number of observations

mean = 9x^2- 30x+ 25 / 3x+5

mean=3x-15/90

90+15=3x

x=105/3

x=35

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