Is the value a an improper fraction less than 1 or greater than 1

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

What is the equation of the graph below? y=sec(x)-4

Which expression is equivalent to7_/x^2 ÷ 5_/y^3? assume y# 0