a father is 27 years older than his son. ten years ago he was twice as old as his son. how old is the father​

thus the father is 64 years and son is 37years

Step-by-step explanation:

Let father be X and son be y

X=27+Y(I)

X-10=2(Y-10)

putting the value of X from eqn(I)

27+Y-10=2Y-20

Y+17=2Y-20

17+20=2Y-Y

37=y

X=27+Y

X=64

idk

step-by-step explanation:

maybe try   if it is work from a book, if not try

last option

step-by-step explanation:

given that δdef is right and isoceles,

assuming that side df is the hypotenuse means that de an ef are the other 2 sides that intersect at 90° and are of equal length.

because they are of equal length, we can say that they are congruent

because they intersect at 90°, their slopes must be opposite reciprocals.

only the last option satisfies these conditions.