Answer:
-5.5
Step-by-step explanation:
1. -3.1 + (-7.2) + 4.8
remove parentheses
add/subtract the numbers.
-3.1-7.2+4.8 = -5.5
Vertices are formed when 2 sides come together on a polygon. So they are basically corners. The smallest amount of sides a polygon has is 3, which would be a triangle. And triangles have 3 corners, because with a triangle, each side touches the other two. So the minimum number of vertices needed to form a polygon would be 3.
<span>60/5= 12
Just take 60min. and divide it into 5 sections.
So, 1/5 of an hour is 12 minutes.</span>
