If the mean of 4,8,x and 12 is 10, then the value of x is

Value of x = 16

Step-by-step explanation:

Given:

Mean value = 10

Numbers; 4, 8, x, 12

Find:

Value of x

Computation:

Mean = Sum of all numbers / Total Number

10 = (4 + 8 + x + 12) / 4

40 = 24 + x

x = 16

Value of x = 16

$3720

step-by-step explanation:

taxable income = $31000

as per the 2018-2019 us tax bracket, the tax rate is 12% for an individual whose taxable income is between $9,526 to $38,700.

so, the tax to be paid by him = 12% of 31000

= 0.12 * 31000     [12% converted to decimal as 0.12]

= $3720