Answer:
16.83
Step-by-step explanation:
7.36
+ 9.47
----------
16.83
First Column, -x and 5 third column, -x and 2
All of the above. it is a three dimensional pyramid, and a "polyhedron" means it is triangular.
She had to spend 50 cents... since nickels value at 5 cents, 10 5 cent coins value at 50 cents
Hope this helps
