(8-2a)=more math

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 undefined geometric term is described as a location on a coordinate plane that is designed by an ordered pair (x,y) ?

Which of the following represents the length of a diagonal of this trapezoid?