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Author Question: The calendar we presently use is the ______________ calendar. Fill in the blank(s) with correct ... (Read 136 times)

lidoalex

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The calendar we presently use is the ______________ calendar.
 Fill in the blank(s) with correct word

Question 2

If a wave has a frequency of 15 Hz, it has a period of
 a. 1/15 s.
  b. 3.9 s.
  c. 225 s.
  d. 15 s.



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sultansheikh

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Answer to Question 1

Gregorian

Answer to Question 2

a





 

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