The Russian ruble coin has a radius of 10.25 mm. What is the circumference in terms of Pi? 5Pi

10Pi

10.25Pi

20.5Pi

How do you multiply a mixed fraction by a regular fraction

15 point ! ~ see if you know the answer to both you!

Astudy was interested in determining if eating milk chocolate lowered someone's cholesterol levels.ten people's cholesterol was measured. then, each of these individuals were told to eat 100g of milk chocolate every day and to eat as they normally did. after two weeks, their cholesterol levels were measured again. is there evidence to support that their cholesterol levels went down? how should we write the alternative hypothesis? (mud = the population mean difference= before - after)a. ha: mud = 0b. ha: mud > 0c. ha: mud < 0d. ha: mud does not equal 0