➪The hour is divided into 60 minutes and the minute into 60 seconds is given by <em><u>Babylonians </u></em> 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.
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.
Your answer is because the numbers raised to negative powers must be flipped over the divisor to become positive. Then, when multiplying 2 and z, you add their exponents.
