Abcd is a square . the bisector of angle dbc cuts ac and cd at e and f respectively. prove that bfx ce = be x df

Two sides of a triangle mesure 20cm and 30cm. what is the measure of the third side

Successful implementation of a new system is based on three independent modules. module 1 works properly with probability 0.96. for modules 2 and 3, these probabilities equal 0.95 and 0.90. compute the probability that at least one of these three modules fails to work properly.

Which statement is true? n is a point of tangency on circle p. pt is a secant of circle p. is a secant of circle p. vu is a tangent of circle p.