Question

A scientist uses a submarine to study ocean life.
She begins at sea level, which is an elevation of 0 feet.
She descends 48.7 feet.
She then rises 38.3 feet.
Next, she travels down a second time, 83.6 feet.

How many feet must she now ascend to get back to sea level?

Answer 1

Answer:

94

Step-by-step explanation

they go down 48.7 from 0 with is -48.7 then they go up 38.3 feet which is a positive so you add 38.3 + (-48.7) = -10.4. then we subtract 10.4 - (83.6) and get -94 feet, but to get back to 0 aka sea level they have to ascend 94 feet to get back up. so its positive 94