Your friend was solving the equation shown and was confused by the result "-20 = -20." Explain what this result means.
4ly - 5) - 2y = 6y - 20 - 4y
4y - 20 - 2y = 6y - 20 - 4y
2y - 20 = 2y - 20
-20 = -20

Pls help me!! I really would appreciate it!

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