Answer:
1 and 2 are not polyhedrons, as a circle has infinite sides
1. cone, 1 vertex
2. sphere, nothing
3. pentagonal prism?
wait but can't every face be a base???
anyway 7 faces, 10 vertices
4. triangular prism
5 faces, 6 vertices
Step-by-step explanation:
Y =

This is because the total cost is 10x + 480 and then that needs to be divided by the amount of people.
75 is one half the sum of 142 and 8
Answer:a universal set is the set containing all objects or elements and of which all other sets are subsets.
Step-by-step explanation:
Answer:
I'm good at Algebra 2 I've taken it already
Step-by-step explanation: