One building is 3ft by 20ft if the other building is 21ft by what is the height

{0,1,2,3,4,5,6,20,21,22,23,24,25} the distribution is considered to be: skewed the right, skewed the left, not skewed?

Aword processing program requires a 7- digit registration code made up of the digits 1,2,4,5,6,7 and 9 each number has to be used and no number can be used mor than once how many codes are possible

The perimeter of a rectangle is 42 inches. if the width of the rectangle is 6 inches, what is the length