Be sure to provide an answer for each question. You may work with other students in your recitation, as well as use your notes, the book, and the internet. Do make sure you understand how to solve the problems and answer the questions, as similar ones may appear on the exams. Identify propositions within each sentence, assign a single-letter variables name for each proposition, provide compound propositions equivalent to each sentence using these variables, and use truth tables to exhaustively explore truth values of these compound propositions. 1. Roses are red and violets are blue. 2. Roses are red and either violets are blue or sugar is sweet 3. Either it will rain or snow, but not both 4. If Jane wins or if Jane loses, then Jane will be tired. 5. If the program halted, then the message was corrupted or the connection was ended.

answer:

science is the study of the nature and behavior of natural things and the knowledge that we obtain about them. a science is a particular branch of science such as physics, chemistry, or biology. physics is the best example of a science which has developed strong, abstract theories.

pseudoscience is a collection of beliefs or practices mistakenly regarded as being based on scientific method.

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answer:

50 vo; ts

explanation:

One of the benefits of working with chlorinated polyvinyl chloride (CPVC) pipe is that it can be cut with a variety of different tools that don’t require any electricity or heat. However, different cutting methods are preferred over others, depending on the application.

When cutting CPVC pipe, it is important to make a square, flat cut. An uneven cut limits the bonding area and weakens the fitting.

To help you make the best possible cut, we’ve put together the following dos and don’ts when cutting CPVC pipe in different situations.