How many complete hours in 1386 minutes?

In a classroom the students are 11 boys and 1 girl if one student is selected at random find the probability that the student is a girl? Is -6.4 less than -6.5? To find the second highest number from a set of numbers? What number between 400 and 500 that is divisible by 2 4 9? How many hours in 73 years? What is the formula Length x Width x Depth used for? What is 9 10 as a decimal? S equals C plus M C equals 14 M equals - 2.50 find the value of the variable that is not given Round to the nearest hundredth if applicable? How many microgram equal to 1 milligram? What is 0.11 of a million? How many centimiters is in a half hour walk? What is the formula in finding the probability of an event? How many minutes equals 0.17 hours? What year was the smartboard sold? What is 54.00 plus tax? 255 mins is how many hours? 17 is 50 percent of what number? Show how to work what percent of 90 is 27? How do you add three mixed fractions? Where can you find information about German painter S Gruber who was born in 1921?