The base of a triangle is 3cm greater than the height. the area is 14cm. find the height and base of the triangle.

The perimeter of a movie screen is 54 meters. the screen is 18 meters wide. how tall is it?

Express in the simplest form: (x^2+9x+14/x^2-49) / (3x+6/x^2+x-56)

In right ∆abc shown below, the midpoint of hypotenuse ac is located at d and segment bd is drawn.if ab = 12 and bc = 16, then explain why bd = 10. hint: consider what you know about the diagonals of a rectangle.