The answer is 20 because adding 10 twice is 2. And the answer is 10 times 2 so u have to add 10 twice for the product
Step-by-step explanation:
THE DIVISION of the hour into 60 minutes and of the minute into 60 seconds comes from the Babylonians who used a sexagesimal (counting in 60s) system for mathematics and astronomy. They derived their number system from the Sumerians who were using it as early as 3500 BC.
Answer:
9
Step-by-step explanation:
9.45 is rounded down to 9 because the number must reach half to round up. To round up to 10, it must be 9.5. hope this helps
Answer: look at the photo
Step-by-step explanation:
