How do you convert standard deviation to variance?.

The speed of a falling object increases at a constant rate as time increases since the object was dropped. which graph could represent the relationship betweent time in seconds, and s, speed in meters per second? speed of a falling object object over time

How do you find principle and simple interest

Which equation can be used to measure the density of water in a spherical water tank? let w represent the number of water particles within the region.