70% of what number is 56?

Volume of cylinder with a radius of 8cm and height of 25 cm

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

Polygon abcde is reflected to produce polygon a′b′c′d′e′. what is the equation for the line of reflection?