5) MK=12, MP=16.

The diagram shows a secant MKH and a secant M P L. The lengths are MK = 12, MH = x, MP = 16, and ML = 3. According to the intersecting secants theorem, MK * MH = MP * ML. Substituting the given values, we get 12 * x = 16 * 3. This simplifies to 12x = 48. Solving for x, we get x = 48 / 12 = 4.