What is the radius of the Brazilian coin that has a circumference of 84.78 mm?

If a =6, what is the value of 2a(3b + 5c)?

Asurvey of 45 teens found that they spent an average of 25.6 hours per week in front of a screen (television, computer, tablet, phone, based on the survey’s sample mean, which value could be the population mean? 2.3 hours 27.4 hours 75.3 hours 41.5 hours

With both problems. a.s.a.p directions on photo ^