From 3 o'clock, after the clockwise rotation of 450 degrees, when does the clockwise point?

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• 1. From 3:00 p.m. to 6:00 p.m., the hour hand rotates () degrees clockwise, and the hour hand walks (-) circles
• 2. From 3:00 p.m. to 9:00 p.m., the clock rotates () degrees clockwise
• 3. How many degrees can the minute hand of the clock coincide with the hour hand when it is rotated clockwise from 4 o'clock It is better to write out the equations and the analysis process
• 4. When the minute hand of the clock rotates clockwise from 4 o'clock, how many degrees does the minute hand coincide with the hour hand? One minute, the minute hand goes 6 degrees, one minute, the hour hand goes 0.5 degrees.
• 5. How many degrees does the minute hand of the clock rotate clockwise to coincide with the hour hand from the 4 o'clock position? Formula, my friends
• 6. Between 4 o'clock and 5 o'clock, how many degrees does the minute hand of the clock rotate clockwise from the 4 o'clock position? Is the minute hand coincided with the hour hand?
• 7. How many degrees does the minute hand of the clock rotate clockwise to coincide with the minute from the positive position of 4 o'clock
• 8. The center of symmetry of the inverse function of F (x) = x-a / x + A is (1, - 1) to find the real number a ----If the center of symmetry of function f (x) is (- 1,1), then - 1 + a = 0, then a = 1 (then - 1 + a = 0, then a = 1) I can't understand why I bring - 1 to the denominator and let the denominator = 0
• 9. If a function is symmetric with respect to a point, is its inverse symmetric with respect to that point
• 10. Function and inverse function of the image about what symmetry
• 11. From 3 p.m. to 9 p.m., the clock rotates () degrees clockwise
• 12. On the clock face, if the minute hand rotates one circle, then the angle of the clockwise rotation is () degrees
• 13. On the clock face, if the minute hand rotates for one circle, how many degrees does the hour hand rotate?
• 14. On the clock face, if the minute hand rotates for one circle, then the angle of the clockwise rotation is () degrees
• 15. How many degrees does the minute hand rotate on the clock face
• 16. On the clock face, if the minute hand rotates one circle, then the degree of the clockwise rotation is______ ．
• 17. The hour hand from 6 o'clock to 12 o'clock revolves () degrees around the center of the clock face
• 18. After the minute hand revolves around the center of the clock face for 3 circles, the hour hand revolves around the center of the clock face ()
• 19. The minute hand on the clock goes 60 times faster than the hour hand______ ．
• 20. Judgment question: the ratio of the rotation speed of the hour hand and minute hand on the clock face is 1:60