Two electronic components of a missile system work in harmony for the success of the total system. Let X and Y denote the life in hours of the two components. The joint density of X and Y is f(x, y)=ye−y(1+x), for x, y≥0, f(x, y)=0, elsewhere. q(a) Give the marginal density functions for both random variables. (b) What is the probability that the lives of both components will exceed 2 hours?

Each person in an it department of 25 people works on at least one of 3 major projects: system security, program implementation, platform development. 10 people work on system security, 13 work on program implementation, and 12 work on platform development. 4 people work on system security and platform development, 5 people work on program implementation and platform development, and 2 people work on all three projects. how many people work on system security and program implementation?

Given that s is the centroid of triangle mno, find sq.

14+2 (56-1) this is an arithmetic sequence