Sue ran the first 12 miles of the 24 mile fun run in 72 minutes. her rate decreased by 2 miles per hour in the second half of the race. how long did it take sue to run the second half of the fun ru ?

Find parametric equations for the line tangent to the curve of intersection of the surfaces at the given point. surfaces: xsquared2plus+2yplus+2zequals=1212 yequals=33 point: left parenthesis 1 comma 3 comma five halves right parenthesis

What is the radius of a circle with an area of 78.5 cubic inches? use 3.14 for pie

Prove sin2a + cos2a - 1 / sin2a + cos2a + 1 = 1 - tana / 1 + cota