Exercise 1.4.6: Applying De Morgan's laws. info About Translate each English sentence into a logical expression using the propositional variables defined below. Then negate the entire logical expression using parentheses and the negation operation. Apply De Morgan's law to the resulting expression and translate the final logical expression back into English. p: the applicant has written permission from his parents e: the applicant is at least 18 years old s: the applicant is at least 16 years old (a) The applicant has written permission from his parents and is at least 16 years old. (b) The applicant has written permission from his parents or is at least 18 years old.

explanation:

albeit general zaroff claims to be socialized and honorable, there are insights that he is progressively animistic. a standout among the best models is a physical depiction of the general.

directly after zaroff has got done with depicting ivan as somewhat of a savage, similar to "all his race," he uncovers that they are a similar race, implying that he also is savage.

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because, you have to i : /

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invention of the washing machine

in the past, people used sticks and stones or scrub boards to clean their clothing. as it was sweaty, backbreaking work, we owe a world of to james king because he created the model for the modern washing machine in 1851. the most important issue was that this machine cleaned clothes while a person cranked the handle. doing this made people who used it develop strong muscles in their arms. later, in 1908, alva j. fisher created an electric washing machine named thor. this one was not the first automatic washing machine. however, it was one of the most popular models at the time.

the correct answer is: d