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emmainna [20.7K]
3 years ago
5

Select ALL that apply: 21 days is equal to...

Mathematics
2 answers:
VMariaS [17]3 years ago
8 0
A Is The Correct answer
Sonbull [250]3 years ago
3 0

1 week is 7 days.

3 weeks = 21 days. Answer D. is correct.


A hour is 3600 seconds

24 hours ( a day ) is 86400 seconds

21 days is 1814400 seconds.    * This is not an option *


Since 24 hours are in a day 24 hours x 21 days is 504 hours

Answer A. is correct


504 hours x 60 minutes per hour is 30240

Answer B. is correct. These are all the correct answers, A,B, and D.



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