When making excel table, how to calculate the difference between two time numbers and what is the formula
Hour all show all hidden return time value of the number of hours. That is, an integer between 0 (12:00 a.m.) and 23 (11:00 p.m.)_ number)\x0dSerial_ Number represents a time value, which contains the hours to be searched
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- 2. A desk has three drawers. Each drawer is 50cm in length, 45cm in width and 0.7dm in depth. How many boards should be used to make the desk drawer?
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- 4. The truck and bus run from a and B at the same time. The truck runs 35 kilometers per hour and the bus 40 kilometers per hour. After 4 hours, the two cars meet. How many kilometers is the distance between a and B?
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- 6. A and B set out at the same time from a and B which are 180 km apart. A rides a bicycle and B drives a car along the same route. It is known that a's speed is 15 km / h and B's speed is 45 km / h How many hours did they meet? How many hours did B arrive at a?
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- 8. 1. A and B drive from two places 324km apart at the same time and meet on the way after 6 hours. The speed of a is 80% of that of B 2. Master Zhang made a batch of parts, which accounted for 40% of the total on the first day. If he made 12 more parts, he would finish two-thirds of the total. How many parts are there in total?
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- 12. As shown in the figure, it is known that in △ ABC, ad and AE are the height and the median line on the edge of BC, ab = 9cm, AC = 7cm, BC = 8cm, respectively
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- 14. It is known that in △ ABC, ∠ BAC = 120 ° with AB and AC as sides, positive △ abd and positive △ ace are made outward respectively, and M is in AD It is known that in △ ABC, ∠ BAC = 120 ° with AB and AC as sides, make positive △ abd and positive △ ace outward respectively, M is the midpoint of AD, n is the midpoint of AE, and P is the midpoint of BC. It is proved that MP = NP
- 15. As shown in the figure, △ abd and △ ace are equilateral triangles. What's the use of proving ad = AB and AE = AC in be = CD
- 16. As shown in the figure, abad = BCDE = ACAE, verification: △ abd ∽ ace
- 17. As shown in the figure, abad = BCDE = ACAE, verification: △ abd ∽ ace
- 18. As shown in the figure, abad = BCDE = ACAE, verification: △ abd ∽ ace
- 19. As shown in the figure, ab ⊥ AC, ab = AC, ad ⊥ AE, ad = AE
- 20. As shown in the figure, abad = BCDE = ACAE, verification: △ abd ∽ ace