Determine the equation of a line L, that is perpendicular to a line passing through A (3,5) and ( 6, -8), and also Line L passes through the midpoint of AB.

In triangle △abc, ∠abc=90°, bh is an altitude. find the missing lengths. ah=4 and hc=1, find bh.

Need this at the city museum, child admission is 6 and adult admission is 9.20. on tuesday, 132 tickets were sold for a total sales of 961.60. how many adult tickets were sold that day?

The equation of a parabola is given. y=18x2+4x+20 what are the coordinates of the focus of the parabola?