Just divide 99.6 by 21...
Because you want to know how many meters per second..
99.6 / 21 = around 4.74 meters
so the rate of descent is around 4.74 meters
For this case we have that by definition, the sum of the internal angles of a triangle is 180 degrees. So, we have:

We add similar terms:

Answer:

Option D
Answer:
4 times
Step-by-step explanation:
The Answer is -16
I hope this helps