What is (1.6x + 7.3) + (-0.6x + 2) – (7.8 - 3.4x), simplified?

What is the common difference in the following arithmetic sequence? 7,3,-1,-5

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

This is the number of parts out of 100, the numerator of a fraction where the denominator is 100. submit