The mean of 6 numbers X - 5 x - 1 X X + 2 X + 4 and X + 12 is 15 find the mean of first four numbers.
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Answered by
12
Answer:
The Mean of First Four Number is 12
Step-by-step explanation:
The value of x
x-5+x-1+x+x+2+x+4+x+12/6=15
6x+12=90
6x=90-12
x=78/6
x=13
If x=13,the 6 number are
8,12,13,15,17and25
The mean of first 4 number are
8+12+13+15/4
48/4
12
Mean of first four numbers is 12
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