Quick question, is this the same as cuz i got -4 square root of 5 but the answer sheet said -2 square root of 5 minus 2. probably a stupid question but i have a test on it tmr and i want to make sure cuz u never know if they’re tryna trick u

Your first steps are correct.  Mult. the given fraction by (1+sqrt(5)) / (1+sqrt(5)).

Result:  8(1 + sqrt(5) )       8(1 + sqrt(5) )
              =
                 1 - 5                         -4

Must keep that denominator (-4).

16 km due west

Step-by-step explanation:

The bearing of the school p from school q is 16 km due west.

To find the bearing of school q from school p, we have to find the direction that the school q is with respect to school p.

Since p is directly west of q, then it implies that q must be directly east of p.

We now know the direction.

Since the distance from q to p is exactly the same as the distance from p to q, then, the distance from p to q is 16 km.

Hence, the bearing of q from p is 16 km due west.