What is 2 divieded by 9 to the ninth power?

Which matrix can be multiplied to the left of a vector matrix to get a new vector matrix ?

It says factor each expression completely 8y+48

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