Answer:

Step-by-step explanation:
Given


Required
Determine the new position
It descends means that it moved in the downward position.
So, the new position is:



<em>Hence, the new position f the submarin is -415m</em>
Step-by-step explanation:

I think, he made a mistake because the exponents have different values but then if you'll look at his results, he just wrote the same thing. If you want, you could post the original problem, and I'll solve it for you :)
In order going down:
5 3/5
6 5/6
4 2/3
10 1/3
11 2/3
Answer:0.00000019961
Step-by-step explanation:
I moved the decimal place by the number of the exponent