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A scientist uses a submarine to study ocean life.
•She begins at sea level, which is an elevation of o feet.
• She descends 11.7 feet.
• She then ascends 3.4 feet.
•Next, she travels down a second time, 85.4 feet.
How many feet must she now rise to get back to sea level?

Sagot :

In short: -93.7


Okay so essentially what you’ll want to do is just break down all of the word into numbers then it’s just a matter of awkward addition. So our starting number (0) then she is descending so it’d be a negative valued 11.7
So -11.7 + 3.4 = -8.3 (or if it’s easier just subtract the 3.4 from positive 11.7 and then make it a negative value.) then you’ll add another -85.4 as she’s going down once again so add 8.3 and 85.4 which equals 93.7 then slap a negative on there andddd BOOM

-93.7 is your answer
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