What is the solution to this equation? x^2+3x+7=0

An optical inspection system is used to distinguish among different part types. the probability of a correct classification of any part is 0.92. suppose that three parts are inspected and that the classifications are independent. let the random variable x denote the number of parts that are correctly classified. determine the probability mass function of x. round your answers to four decimal places (e.g. 98.7654). x f(x) 0 1 2 3

Ineed me i stuck and i don’t want to get it wrong

What is the similarity ratio of a cube with volume 729m^3 to a cube with volume 3375 m^3