What type of graph is this?1)In a class test in mathematics, the scores of 20 students are: 8,9,8,7,4,3,5,6,8,3,6,8,8,7,7,5,9,6 ,8,7. (a)present the information in a frequency table. (b)Find the mode. (c)Calculate the mean score. (2)If the mean of 7, 9,11, 14, y, 15, 19, 21, 22, 29, and 34 is 18.Find the value of y.

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

1. evaluate 8x(2)y9(-2) for x=-1 and y=2 2. simplify the equation. -() 3. simplify the expression. [tex]\frac{5}{x(-2) y9(5)}[/tex]

Tyler reads 2/5 of a book on monday, 1/3 of it on tuesday, 2/9 of it on wednesday, and 3/4 of the remainder on thursday. if he still has 14 pages left to read on friday, how many pages are there in the book?