Speed is 231 ft/s.
Distance is 4620 ft.
Solution:
First we have to convert the unit of speed from m/s to ft/ s.
Then for 20 seconds, we have to calculate the feet covered by the parachute.

In 20 seconds, the parachute covers the distance of,

Answer:
a=(-7)
b=1
c=4
Step-by-step explanation:
0=(c)+(a)x²+(b)x
The answer is B. the open circle means “greater than” or “less than” and the closed circle means “greater than or equal to” or “less than or equal to”.
a/b * b/c * c/d * d/e is equal to a/e provided that b, c, d,
and e are not zero
PROVE
a/b * b/c * c/d * d/e
= (a/b *b/c) * (c/d * d/e)
= ab/bc * (c/d * d/e)
= a/c * (c/d * d/e)
= a/c * (cd/de)
= a/c * c/e
= ac/ce
= a/e
Therefore, a/b * b/c * c/d * d/e is equal to a/e provided that
b, c, d, and e are not zero