How many solutions do the nonlinear system of equations graphed below have ?

How do you answer this question? (step by step)

Which term best describes the association between variables a and b

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.