An airplane takes off from dallas, texas, to fly to new york city traveling ne for 2,760 km. the same plane returns that day to dallas. the airplane spent 2 hours on the trip to new york city, and the return trip took 2 hours. what is the airplane's speed for the round trip?

a. 1,104 km/h
b. 1,227 km/h
c. 1,300 km/h

Mariah is randomly choosing three books to read from the following: 5 mysteries, 7 biographies, and 8 science fiction novels. which of these statements are true? check all that apply. there are 20c3 possible ways to choose three books to read. there are 5c3 possible ways to choose three mysteries to read. there are 15c3 possible ways to choose three books that are not all mysteries. the probability that mariah will choose 3 mysteries can be expressed as . the probability that mariah will not choose all mysteries can be expressed as 1 −