24÷4 4×4 what is the meaning of the unknown factor and quotient

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

Find the slope of a line given the following two points

1. find the area of the unshaded square 2. find the area of the large square 3. what is the area of the frame represented by the shaded region show