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Tasya [4]
3 years ago
5

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?
Mathematics
1 answer:
Alexandra [31]3 years ago
7 0
21,000-600 = 20,400
20,400/3400 = 6
t = 6

21,000=3,400(6)+600
21,000=20,400+600
21,000=21,000


34.00
*6
__
204.00

3,400*6=20,400
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