Question

mean of observation is x,2x,3x,x+5,x+9 is 10 . find value of x​

Answer 1

Step-by-step explanation:

mean = sum of the observations / no of observations

given mean is 10

10 =( x+2x+3x+x+5+x+9) / 5

50 = 8x + 14

8x = 36

x = 4.5

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Answer 2

Answer:

-1/2

Step-by-step explanation:

x+2x+3x+(x+5)+(x+9)=10

8x+14=10

8x= 10-14

8x= -4

x= -4/8

x= -1/2