A train travels from station P to station Q at a speed of 90km/h in 3hours 40minutes. The train stops at station Q for 25minutes before returns to station P. The time taken from station P to station Q. Calculate the average speed, in km/h, of the whole journey of the train

Which addition property is being illustrated below? (type commutative or associative) (6 + 7) + 1 = 6 + (7 + 1)

Sanya noticed that the temperature was falling at a steady rate of 1.4 degrees every hour from the time that she first checked her outdoor thermometer. by 6 a.m., the temperature had fallen 21 degrees. which expression can you use to find how many hours earlier she had first checked the thermometer?

Which number completes the inequality? 2/3 < _ < 7/9