the answer is 12z²
Step-by-step explanation:
u just multiply the 4z-(-3z).
Answer:
81
Step-by-step explanation:
1,3,9,81
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.