Aplane dioptric surface separates two homogeneous media of indexes n ans n'. a is the object and a' its image through the dioptic surface. find the relation between ha and ha' under gauss conditions

emily ruth's annual premium is $1058.50

step-by-step explanation:

emily ruth is a female of 27 years age purchasing 20 year endowment insurance with face value $25000.

from the given table,

for females, the age of a male 3 years younger should be used.

so, we have to check for 24 year male for 20 year endowment.

it is 42.34 for every $1000 face value.

for a face value of $25000,

it is 25 * 42.34 = $1058.50

∴ emily ruth's annual premium is $1058.50

it takes about 30 days for it to break down

b.

explanation: