Points ,,and are collinear on . is located at (−,−), is located at (,−), and is located at (,). What is the value for the ratio :?

Sum is 17 and their difference is 3

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.

What is the absolute value of the complex number -4-sqrt2i