Either June or July was the hottest month this year. July was the hottest, so it cannot be June. Invalid

Valid; modus ponens

Valid; modus tollens

Valid; hypothetical syllogism

Valid; disjunctive syllogism

Valid; constructive dilemma

You want free brainliest + free points? answer this drivers ed question and you shall receive : )) gas, food, and lodging are in rural areas. a. easily accessible b. always separated c. found everywhere d. less accessible

99 pts which of the following statements refers to the wage-price spiral process? the salary of a worker fluctuates with the amount of sales he or she accomplishes per month. an employee loses his or her job, finds a position at another company, and is underemployed. employees only receive a raise when their purchasing power has been eroded by inflation. a worker receives a raise, which increases costs for the employer.

Which of these is a disadvantage of hydrogen fuel cells? a. engines that use hydrogen fuel are more efficient than gasoline-powered engines. b. the only emission produced by hydrogen fuel cells is water. c. hydrogen fuel is continually available and useful for heating. d. hydrogen fuel is often purified in a process that emits lots of greenhouse gases.