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24-08-2022
Mathematics

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The altitude a (in feet) of a plane t minutes after liftoff is given by a=3400t+600 . How many minutes after liftoff is the plane at an altitude of 21,000 feet?
The plane reaches an altitude of 21,000 feet __ minutes after liftoff.

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17022747 17022747

24-08-2022

Answer:6 minutes

Step-by-step explanation:

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