Evaluate the following expression 1/5^-2
a) 25
b) 1/25
c) -25
d) -1/25

Is triangle jkl congruent to triangle rst? if so, what is the scale factor?

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 : )

Proving the congruent supplements theorem