Question

If P={x:x belongs to W and 6<x<12}

Q={x:x belongs to N and x<9}

Find (a) P union Q.
(b) P intersection Q
​

Answer 1

Step-by-step explanation:

dune is a landform, and is a large mass of wind-blown sand. Dunes are most common in deserted environments, such as the Sahara, and also near beaches. An area with dunes is called a dune system. The dynamic action of wind and water can sometimes cause the dunes to drift, which can have serious consequences.