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vredina [299]
4 years ago
12

NEED HELP WITH 21 PLZ HELP!?!!!????!

Mathematics
1 answer:
Rama09 [41]4 years ago
7 0

Answer:

Hours

Step-by-step explanation:

21a. One week is too long so using hours will help, but when doing a quick thing you can use seconds.

21b. (Sorry I can't see the question, so I can't answer that part.)

:)

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