How many lines of symmetry does a regular polygon with 16 sides have

What is the greatest common factor of 8 and 36

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

Ben bowled 124 and 188 in his first two games. what must he bowl in his third game to have an average of at least 160?