posted by JOHN .
ASSUME THAT S/A= 4.5, D/A= 4.5, N/E= .80 AND A=D+E SLOVE FOR N/S.
Well, from the first two, D=S
From the fourth,
But N=.8E, so N=.8*(-3.5A)
solve for N/S is the same as N/D
and surely you can finish it.
is -.62 correct
It is if you checked my work and found no errors.