How high should the engineer make the hill?

The height of hill is 125 feet.

Step-by-step explanation:

Given that velocity of the rollercoaster is

Where, is initial velocity and h is height from top of hill.

and v is velocity at height h.

Initial Velocity is 10feet/sec at top of hill.

Also, Velocity at bottom of the hill is 90feet/sec.

Therefore, the value of h at top of the hill is h=0 and value of h at bottom of the hill is h=h

8100=100+64h

8000=64h

h=125 feets.

Thus, The height of hill is 125 feet.

a box 3 3/4 feet long or 4+ feet.

step-by-step explanation:

translate k to n and reflect across the line containing jk.