Check all values equivalent to -i

How do astronomers measure the amount of dark matter in the universe

Which of the following departments would be included in a state government's public safety function? department of education department of emergency management department of environmental protection department of banking and consumer finance

Afootball game between the thunder and the sharks is in its closing minutes, with the thunder ahead by 20 points. the thunder’s coach considers sending in the second-string quarterback. this would reduce the risk of the star quarterback getting injured, but the second-string quarterback is not very good. complete the passage describing the coach’s decision in economic terms.