Question

Q7) If the mean of four observations x x+2 x+6 and x+8 is 11 find the value of x.​

Answer 1

Step-by-step explanation:

x + x+ 2+x+6+ x+8=11 ÷4

4x+16=11÷4

4x÷4 =11-16

x= 5

Answer 2

Answer:

Step-by-step explanation:

x+x+2+x+6+x+8=4x+ 16

4x+16/4=11

Hence, 4x+16=44

x+16=44/4

x=11-16

Hence x =-5