At the start of the school year, Brianna’s history teacher announces that students’ final grades will be weighted based on how they do in three categories: exams (60 percent), final presentation (30 percent), and class participation (10 percent). Which strategy would most likely help Brianna get the best grade? spending more time studying for exams than creating the final presentation splitting her time evenly between studying for exams and creating the final presentation concentrating on creating the final presentation and speaking up in class working hard at participating in class and studying for exams

Show that there is a language a ⚆ {0, 1} â— with the following properties: 1. for all x â a, |x| ≤ 5. 2. no dfa with fewer than 9 states recognizes a. hint: you don’t have to define a explicitly; just show that it has to exist. count the number of languages satisfying (1) and the number of dfas satisfying (2), and argue that there aren’t enough dfas to recognize all those languages. to count the number of languages satisfying (1), think about writing down all the strings of length at most 5, and then to define such a language, you have to make a binary decision for each string about whether to include it in the language or not. how many ways are there to make these choices? to count the number of dfas satisfying (2), consider that a dfa behaves identically even if you rename all the states, so you can assume without loss of generality that any dfa with k states has the state set {q1, q2, . . , qk}. now think about how to count how many ways there are to choose the other four parts of the dfa.

What is a distinguishing feature of today’s graphic application software?) graphic applications are used today on a variety of devices, including touch-screen kiosks and mobile phones.

Which operating system is a version of linux?