What is the range of the set of data : 13, 16, 10, 15, 6, 6

Eis the midpoint of line segment ac and bd also line segment ed is congruent to ec prove that line segment ae is congruent to line segment be

This is a map of the mars exploration rover opportunity predicted landing site on mars. the scale is 1cm : 9.4km. what are the approximate measures of the actual length and width of the ellipse? i mostly need to know how to set it up : )

Aline has a slope of negative 1/4 the past two points -5/4 and 1 what is the equation of the line