Scientists on an oceanographic research vessel board a miniature submarine when it is at an elevation of 2 meters above the ocean's surface. the ocean floor directly beneath the boat is at a depth of 180 meters. the submarine descends at a constant rate of 0.4 meters per second. how long, in seconds, could a scientist spend descending after boarding the submarine? a. x < 455 b. x < 450 c. x > 445 d. x > 450

x < 455

Step-by-step explanation:

Given : Submarine is at an elevation of 2 meters above the ocean's surface.

The ocean floor directly beneath the boat is at a depth of 180 meters

The submarine descends at a constant rate of 0.4 meters per second.

To Find : How long, in seconds, could a scientist spend descending after boarding the submarine?

Solution :

Submarine is at an elevation of 2 meters above the ocean's surface

The ocean floor directly beneath the boat is at a depth of 180 meters

So, distance traveled by scientist descending after boarding the submarine = 180 m + 2m = 182 m

The submarine descends at a constant rate of 0.4 meters per second.

So, a scientist spend seconds in descending after boarding the submarine =

So, a scientist spend 455 seconds or less than that descending after boarding the submarine

So, Option A is true

So, x < 455

900 degrees

step-by-step explanation: