So for this problem I tried using the standard deviation formula for population and sample but still no correct answer. Can someone help me out here please? Not sure what to do.

Marcus and cody both leave the park at the same time, but in opposite directions. if cody travels 6 mph faster than marcus and after 4 hours they are 64 miles apart, how fast is each traveling? solve using rare times time = distance.

Which of the following equations is equivalent to x/3-6/x=1

Shared decision making is always a positive strategy to take