Can you please show me the work on how to divide 12.9 and 0.6 pls? Like up and down

Suppose the radius of a circle is 16. what issuppose the radius of a circle is 16. what is its circumference its circumference

Which situation can be modeled by the inequality 5 + 10w ≥ 45? a. you start with $5 and save $10 a week until you have at least $45. b.you start with 5 baseball cards and purchase 10 cards every week until you have at most 45 cards. c.you start with 5 water bottles and purchases cases of 10 water bottles each until you have a total of 45 water bottles. d.you spend $5 plus $10 per week until you have less than $45.

What is the measure of ac? 5 units 13 units 26 units 39 units 3x- 2b 6x + 9