Yand x have a proportional relationship, and y = 7 when x = 2. what is the value of x when y = 21? enter your answer in the box.

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

The sum of two numbers is 12 and their difference is 18 what are the two numbers

Gravel is being dumped from a conveyor belt at a rate of 25 ft3/min, and its coarseness is such that it forms a pile in the shape of a cone whose base diameter and height are always equal. how fast is the height of the pile increasing when the pile is 14 ft high? (round your answer to two decimal places.) ft/min