If a normally distributed score count has a mean of 120, and a standard deviation of 20, what is the probability that a randomly selected value is greater than 160?

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 : )

Graph the line y=4/3 x+1 . use the line tool and select two points on the line.

Find the volume of the solid bounded by the plane z=0 and the paraboloid z=1-x^2 –y^2