Plz covert this to a scitific notation. 3.21x10^4-2.25x10^5? points injoy

Bernie drove home from a vacation in 1.5 hours. he traveled a total distance of 60 miles. what was his average speed in miles per hour? a. 60 mph b. 90 mph c. 40 mph d. 55mph

The electronic structure or chlorine is 2.8.7 what is the electronic structure of fluorine?

If an athlete runs once around a track, back to the starting line, her average velocity is zero. true or false?