Whyis * (12inches)/(1foot) a conversion factor?

Logan wants to know how many skateboards have defective parts. he inspects 20,000 skateboards and keeps track of the number of defects per board. use his probability distribution table to find the expected value for defects on a skateboard.

Me complete this proof! prove that a quadrilateral is a square. me with the steps for this proof.

The square pyramid has a volume of 441 cubic inches. what is the value of x? 1/7x is the height x is the base