Help solving this with steps pls

1) A system consists of two subsystems A and B connected in parallel. For their useful life, it is given that A has a failure hazard rate of one failure every two years while B one failure every three years. Find the failure rate of the parallel system comprising A and B as well as its MTTF. 3 2) For the system in Problem 1, it is known that the mean life of subsystem A is five years and for B four years; the useful life standard deviation is nine months for A and six months for B. For a mission starting after subsystem A has been in service for 10 months and B for one year, find the reliability of each subsystem and then of the parallel system, if the mission lasts 2,016 hours. 5 3) Consider the system with tie sets as in the figure below. % S J | S. r""% S I/ J J A 5, ,, e <.4 ol s k reliability values are for subsystem and find the of system in figure t derive incidence matrix cut sets draw network showing then calculate using you found cross-check with value problem sie>