Since addition is commutative, she can add anyway she wants.
(17+51)+(10+13)
(51+10)+(17+13)
Hope this helps.
You would subtract how many times Dion tagged bill with how many times bill tagged Dion, so 12 - 7 = 5
Your answer is c, hope this helps, ask me any questions if needed+
Answer:
Regular Octagon
Step-by-step explanation:
There are only three regular shapes that tessellate – the square, the equilateral triangle, and the regular hexagon. All other regular shapes, like the regular pentagon and regular octagon, do not tessellate on their own.