Question

the mean of 1,3 x and 8 is 7 find the value of x​

Answer 1

Mean = Sum of the terms/number of terms.

Here,

mean = (1+3+x+8)/4

Given mean is 7.

7 = (1+3+x+8)/4

28 = x + 12

x = 16.

Answer 2

Given mean of 6,8,10,x,7 is 8

Given mean of 6,8,10,x,7 is 8mean=8

Given mean of 6,8,10,x,7 is 8mean=8\implies \frac{6+8+10+x+7}{5}=8⟹

Given mean of 6,8,10,x,7 is 8mean=8\implies \frac{6+8+10+x+7}{5}=8⟹ 5

Given mean of 6,8,10,x,7 is 8mean=8\implies \frac{6+8+10+x+7}{5}=8⟹ 56+8+10+x+7

Given mean of 6,8,10,x,7 is 8mean=8\implies \frac{6+8+10+x+7}{5}=8⟹ 56+8+10+x+7

Given mean of 6,8,10,x,7 is 8mean=8\implies \frac{6+8+10+x+7}{5}=8⟹ 56+8+10+x+7 =8

Given mean of 6,8,10,x,7 is 8mean=8\implies \frac{6+8+10+x+7}{5}=8⟹ 56+8+10+x+7 =8\implies \frac{31+x}{5}=8⟹

Given mean of 6,8,10,x,7 is 8mean=8\implies \frac{6+8+10+x+7}{5}=8⟹ 56+8+10+x+7 =8\implies \frac{31+x}{5}=8⟹ 5

Given mean of 6,8,10,x,7 is 8mean=8\implies \frac{6+8+10+x+7}{5}=8⟹ 56+8+10+x+7 =8\implies \frac{31+x}{5}=8⟹ 531+x

Given mean of 6,8,10,x,7 is 8mean=8\implies \frac{6+8+10+x+7}{5}=8⟹ 56+8+10+x+7 =8\implies \frac{31+x}{5}=8⟹ 531+x

Given mean of 6,8,10,x,7 is 8mean=8\implies \frac{6+8+10+x+7}{5}=8⟹ 56+8+10+x+7 =8\implies \frac{31+x}{5}=8⟹ 531+x =8

Given mean of 6,8,10,x,7 is 8mean=8\implies \frac{6+8+10+x+7}{5}=8⟹ 56+8+10+x+7 =8\implies \frac{31+x}{5}=8⟹ 531+x =8\implies 31+x=40⟹31+x=40

Given mean of 6,8,10,x,7 is 8mean=8\implies \frac{6+8+10+x+7}{5}=8⟹ 56+8+10+x+7 =8\implies \frac{31+x}{5}=8⟹ 531+x =8\implies 31+x=40⟹31+x=40\implies x = 40-31⟹x=40−31

Given mean of 6,8,10,x,7 is 8mean=8\implies \frac{6+8+10+x+7}{5}=8⟹ 56+8+10+x+7 =8\implies \frac{31+x}{5}=8⟹ 531+x =8\implies 31+x=40⟹31+x=40\implies x = 40-31⟹x=40−31\implies x = 9⟹x=9

Given mean of 6,8,10,x,7 is 8mean=8\implies \frac{6+8+10+x+7}{5}=8⟹ 56+8+10+x+7 =8\implies \frac{31+x}{5}=8⟹ 531+x =8\implies 31+x=40⟹31+x=40\implies x = 40-31⟹x=40−31\implies x = 9⟹x=9Therefore,

Given mean of 6,8,10,x,7 is 8mean=8\implies \frac{6+8+10+x+7}{5}=8⟹ 56+8+10+x+7 =8\implies \frac{31+x}{5}=8⟹ 531+x =8\implies 31+x=40⟹31+x=40\implies x = 40-31⟹x=40−31\implies x = 9⟹x=9Therefore,Value of x = 9