Triangle MNO i similar to triangle RST as shown, what is the value of x

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 roots of the equation below. x^2 - 6 + 9 = 0

Which type of graph would allow us to quickly see how many students between 100 and 200 students were treated?