shasha12:

A submarine's position is 600 feet below sea level. It descends 218 feet. What is the submarine's new elevation? A.-818 ft B.-600 ft C.-382 ft D.382 ft

8 months ago
shasha12:

I think its D or A

8 months ago
dude:

Sea level is 0 The submarines position is at -600, it went down an additional 218 So add their distances \(-600+-218\)

8 months ago
shasha12:

so its C

8 months ago
dude:

No, if you are adding negatives just add them normally like you would do with positive numbers \[~~~-600\\ \underline {+-218}\\ ~~-818\]

8 months ago
shasha12:

oh so 218 negative too?

8 months ago
dude:

Yes its also negative because it descended (another word for goes down)

8 months ago
shasha12:

thank you

8 months ago
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