if the mean of x,2x+1,2x+5,2x+9 is 30.find the value of x
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30= x+2x+1+2x+5+2x+9÷4
30×4=7x+15
120-15=7x
105/7=x
x=15
30×4=7x+15
120-15=7x
105/7=x
x=15
Answered by
1
Hey.!
______________________________
Given values x, 2x+1 ,2x+5 , 2x+9
Mean = Sum of all observations / Total number of observations.
30 = x +2x+1+2x+5+2x+9/4
30 = 7x+15/4
4*30=7x+15
120= 7x+15
120-15 =7x
7x = 105
x=105/7
x =15
______________________
# HOPE IT HELPS #.....☺
______________________________
Given values x, 2x+1 ,2x+5 , 2x+9
Mean = Sum of all observations / Total number of observations.
30 = x +2x+1+2x+5+2x+9/4
30 = 7x+15/4
4*30=7x+15
120= 7x+15
120-15 =7x
7x = 105
x=105/7
x =15
______________________
# HOPE IT HELPS #.....☺
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