To get ready for school, Traci spent 1/20th of an hour getting dressed and 1/10th of an
hour doing her hair. What is the total
amount of time she spent getting ready?
Give your answer in simplest form.

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 inequality comparing two of the expressions is true when 0.7 < x < 0.9

Sum is 17 and their difference is 3