Question

A submarine started at 750 meters below sea level. It rose 50 meters per hour over a 4-hour period. Which expression represents the new position of the submarine in relation to sea level

Answer 1

Answer:

The submarine now started at 750ms below sea level. If it rose 50 meters per hour period. And after 4 hours It will go to 200ms up. (50×4=200meters.) so, after 4hours it will be 750-200=550meters below the sea level. Hope it is useful. Thank you

Answer 2

The expression represents the new position of the submarine in relation to sea level  is 750 + (4 x -50)

Solution:

Given that,

A submarine started at 750 meters below sea level

It rose 50 meters per hour over a 4-hour period

Initial level = 750 meters

Rise in 1 hour = 50 meters

Thus,

Rise in 4 hours = 4 x 50 = 200 meters

Which expression represents the new position of the submarine in relation to sea level

Expression for new position = 750 + (4 x - 50)

Expression for new position = 750 - 200 = 550

Thus, expression represents the new position of the submarine in relation to sea level  is 750 + (4 x -50)

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