A cut piece of ribbon is 21 inches long. The piece of ribbon is 15% of the original length of the ribbon. How long was the original length of ribbon?

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Part a: select all of the ordered pairs that are located on the graph of the equation. part b: does the graph of the equation represent a function? select all correct answers for part a and one answer for part b.

Solve the given system of equations. 2y= -x+9 , 3x-6= -15

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