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sergeinik [125]
4 years ago
13

If an object fell to the ground from the top of a 1,600-foot-tall building at an average speed of 160 feet per second, how long

did it take to fall?
Mathematics
2 answers:
Rufina [12.5K]4 years ago
5 0
The answer is 10 seconds.
anzhelika [568]4 years ago
3 0
Well 1,600/160= 10
so it will take 10 seconds to reach the ground not taking in any variables such as wind carrying it to the side and suspending in the air any longer so
=10 seconds
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Given f(x)=x^2+5 and g(x)=2x^3-1 find (f/g)(-3)
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For this case we have the following functions:

f (x) = x ^ 2 + 5\\g (x) = 2x ^ 3-1

By definition of composition of functions we have:

(f / g) (x) = \frac {f (x)} {g (x)}

Then substituting:

f (-3) = (- 3) ^ 2 + 5 = 9 + 5 = 14\\g (-3) = 2 (-3) ^ 3-1 = 2 (-27) -1 = -54-1 = -55

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(f / g) (- 3) = \frac {14} {- 55} = - 0.25

Answer:

(f / g) (- 3) = \frac {14} {- 55} = - 0.25

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