How many things make a dozen?

Which numbers divide into 60 a whole number of times? When a number is divided by one the quotient is? How do you figure how many square ft by tile size? How do you solve x2 5x 4 in a descending order? Which is heavier a pound of feathers or a kilogram of bricks? A number of the form a b where a and b are whole numbers? What is the smallest load centre for a 1000x1400 mm box? What is the Greatest common factor of 15 130 and 10000? What is 1.38 in inch fractions? What is 148 divided by 851? What can be used in the place of emplex? How much miles human voice will move in 1 minute? What percent of air is 0.00015? 26cm in inches? How do you write 820 as a fraction or mixed number in simplest form? How many equal sides does an obtuse triangle have? What is an escape shaft in a pyramid? When a system has two variables each solution is an ordered pair true or false? What do you do to exponents when adding? What is more tenths or tens?