Find the Fourier inverse cosine transform of p/(1 + p^2)

Aparallel system functions whenever at least one of its components works. consider a parallel system of n components, and suppose each component works independently with probability 0.5. find the conditional probability that component n works given that the system is working

For the following geometric sequence, find the recursive formula. {-80, 20, -5, } i need : ')

What is the total surface area of this square pyramid?