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11Alexandr11 [23.1K]
3 years ago
13

The function d = 4.9t2 represents the distance d, in meters, that a diver falls in t in seconds due to Earth’s gravity. Which eq

uation represents the time, t, during a dive. How much time does it take for a cliff diver who is 185 meters above the water to reach the water below? Round to the nearest tenth.
A. t=d−4.92,13.4 s
B. t=d−4.9−−−−−−−√,12.1 s
C. t=d4.9−−−√,6.1 s
D. t=d4.9−−−√,1,421 s
Whats the answer?
Mathematics
1 answer:
Virty [35]3 years ago
8 0

Answer:

<h2>The time is 6.1 seconds, approximately.</h2>

Step-by-step explanation:

The given function is

d=4.9t^{2}

Where d is distance in meters and t is time in seconds.

Let's isolate t

\frac{d}{4.9}=t^{2}\\  t=\sqrt{\frac{d}{4.9} }

Where d=185 \ m

t=\sqrt{\frac{185}{4.9} } \approx 6.1 \ sec

Therefore, the right answer is C. The time is 6.1 seconds, approximately.

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