Use the variation of parameters formula to find the general solution of the system x' (t) = ax(t) +f(t), where a and f(t) are given:
a = [ 8 -4 ] f(t) = [ t^-2 / 2 ]
[ 4 -2 ] [ t^-2 ]
fyi: a and f(t) are both matrices

50-38=12

step-by-step explanation:

$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

a ≈ 172.05

step-by-step explanation:

the pictures.