The spinner below is spun two times in a row. What is the probability

Aperpendicular bisector, cd is drawn through point con ab if the coordinates of point a are (-3, 2) and the coordinates of point b are (7,6), the x-intercept of cd is point lies on cd.

It takes an ant farm 3 days to consume 1/2 of an apple. at that rate, in how many days will the ant farm consume 3 apples

Compute the standard deviation of the following set of data to the nearest whole number. 10, 10, 15, 20, 25