How many sides do 2 hexagons and 2 pentagons have in all?

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.

Solve -.016x= -16. need solving this

Which strategy is used by public health to reduce the incidence of food poisoning?