What is 61,090,000 expressed in scientific notation? A. 0.6109 x 108 B. 0.61 x 10-8 C. 6.109 x 108 D. 6.109 x 107

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

Given: m∠ adb = m∠cdb ad ≅ dc prove: m∠ bac = m∠bca lol

Quadrilateral abcd in the figure below represents a scaled-down model of a walkway around a historic site. quadrilateral efgh represents the actual walkway. abcd is similar to efgh. what is the total length, in feet of the actual walkway?