I need to know what 2/5 + 2/3 is ??

Which expression is equivalent to 5r6141 2r+st6

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.

The sales totals at macy's food store have increased exponentially over the months. which of these best shows the sales in the first three months?