Which expressions are equivalent to -4(3d-2)-7

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

Janet drove 300 miles in 4.5 hours. write an equation to find the rate at which she was traveling

Identify the number 127 as a rational or irrational. explain