Question

Starting at sea level, a submarine descended at a constant rate to a depth of −4/5 mile relative to sea level in 3 minutes. What was the submarine's depth relative to sea level after the first minute? Enter your answer as a fraction, in simplest form, in the box.

Answer 1

-3/20

Explanation:

Answer 2

`\texttt{Submarine's depth relative to sea level after the first minute =}-(4)/(15)miles`

Explanation:

Starting at sea level, a submarine descended at a constant rate to a depth of −4/5 mile relative to sea level in 3 minutes.

Total time = 3 minutes

`\texttt{Total depth descended in 3 minutes =}-(4)/(5)miles`

We need to find what was the submarine's depth relative to sea level after the first minute,

`\texttt{Depth descended in per minute =}(-(4)/(5))/(3)=-(4)/(15)miles`

`\texttt{Submarine's depth relative to sea level after the first minute =}-(4)/(15)* 1=-(4)/(15)miles\\\\\texttt{Submarine's depth relative to sea level after the first minute =}-(4)/(15)miles`