My number has 2 hundreds. the tens digit is 9 more than the ones digit

What is the approximate circumference of the circle shown below?

The vertices of a triangle are a(7,5), b(4,2), c(9,2). what is m

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