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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
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shasha12:
I think its D or A
dude:
Sea level is 0 The submarines position is at -600, it went down an additional 218 So add their distances \(-600+-218\)
shasha12:
so its C
dude:
No, if you are adding negatives just add them normally like you would do with positive numbers \[~~~-600\\ \underline {+-218}\\ ~~-818\]
shasha12:
oh so 218 negative too?
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dude:
Yes its also negative because it descended (another word for goes down)
shasha12:
thank you
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