Question

A submarine is at a depth of 350 feet below sea level. It makes the following moves, • First u goes down 150 feet. - Next goes up 132 feet. Then he goes down 179 feet. Fanta Margoes down 145 feet. Which slaternenti describes its current depth As 69 2 feet below sealeme because 350 (150) + 132 177945692 B See below sea level because 350 (150) = 132 4 (-1791458 255 Never below sea evel, because 350 (150) (132) + 1 79145) - DIBA Noet below isolervell because 11:50 256. 1132 - 179 145 342

Answer 1

We use a convention that assigns downward movements as negative (-) and upward movements as positive (+).

thus, initial depth is 350 ft, thus, it is -350ft in our convention

Next, it makes a 150 ft downward movement, thus it's also negative, -150ft

Next, an upward movement of 132 ft, thus +132 ft in our convention

Next, downward movement of 179 ft, thus -179 ft

Lastly, 145 ft downwards, thus -145 ft.

Mathematically thus, -350 - 150 + 132 - 179 - 145 = -692 ft

Since it's negative, this means it is below sea level.

692 ft below sea level. Option A