Find the angle of the hands of a clock at the given time 7: 00?

What is the simplified form of (3.25x10^3)(7.8x10^6) written in scientific notation?

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

The perimeter of a rectangle is 42 inches. if the width of the rectangle is 6 inches, what is the length