Answer:
It is not well defined.
Step-by-step explanation:
Because set is a collection of well defined objet. And matter contains of solid, liquid and gas
Answer:7
Step-by-step explanation:
Because 3x7=21.
If this is a 30, 60, 90 triangle, which I think it is, it would b 4
the tree is 8 ft because it is half of the building
