31/5 + (-6 1/2) a. -3 2/7 b. - 3 7/10 c. -9 2/7 d. -9 7/10

Plz which expression is equivalent to the expression below?

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

In priyas math class there are 10 boys and 15 girls. what is the ratio of boys to girls in priyas math class? express your answer as a decimal