Which expression is equivalent to the following complex fraction? 2-1/y / 3+1/y

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

Sara sells beaded necklaces she makes a profit of 4 dollars pn every neclace she sells which table represents the profit sara makes

Simplify a7/a4 a) 1/a3 b)-a/a2 c)a4/a3 d)a3