(- 3 / 4 - 5 / 9 + 7 / 12) × 1 / 36

(- 3 / 4 - 5 / 9 + 7 / 12) × 1 / 36


(- 3 / 4 - 5 / 9 + 7 / 12) × 1 / 36
=-3/4×36-5/9×36+7/12×36
=-27-20+21
=-26



Math problems 9: How many degrees did the clock turn from 12 to 11:36


Hour hand per hour: 360 / 12 = 30 degrees
Walk per minute: 30 / 60 = 0.5 degrees
9: 12 to 11:36, 2 hours and 24 minutes
So: 2 * 30 + 24 * 0.5 = 72 degrees



Second grade primary school mathematics to find the law, the topic is 3,4,7,12,19,32, the following should be how many? What is the law


51

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