A scuba diver is 200 feet below sea level. Write a rational number to describe the divers depth. Part B in order to avoid decompression sickness , the diver must come up at a rate of 33/60 feet per second. How long will it take the diver to safely reach the surface? Show your work and round your answer to the nearest second.

Question

mathstudent55 · Answer

33/60 feet per second = 0.55 ft/sec

speed = distance / time

time = distance / speed

distance = 200 ft
speed = 0.55 ft/sec
Find time.

alina123 · Answer

Shouldnt the distance be -200 and im confused by what you wrote, can you explain it because when i divided the time didnt sound write to me

mathstudent55 · Answer

Yes, -200 ft makes sense since it represents a distance below the surface of the sea.

alina123 · Answer

but can you help me solve it

alina123 · Answer

howd you get the speed by dividing distance

mathstudent55 · Answer

Look at the equation for speed.
To find a speed, you divide distance by time.
s = d/t
OK?

alina123 · Answer

but how do you know the time

alina123 · Answer

by divining the speed and distance

mathstudent55 · Answer

Now take that equation, and solve it for time.

s = d/t

Multuply both sides by t:

st = d

Divide both sides be s:

t = d/s

Now you see that since speed equals distance divided by time, time equals distance divided by speed.

mathstudent55 · Answer

Now divide the distance 200 ft by the speed 0.55 ft/sec to find the time.

alina123 · Answer

i get 363.636363 so on

mathstudent55 · Answer

Correct. That is in seconds. Now round off the answer as you asked to do.

alina123 · Answer

round by which decimal place?

alina123 · Answer

so 364 seconds