Hello,
N={0,1,2,3,4,5,...}
(-1,3]={0,1,2,3}⊂N
Answer (1) no negative whole numbers.
Answer: to make 78 copies it cost 26 dollars.
Step-by-step explanation:
18 copies - 6 dollars
78 copies - x dollars
Hence,

Answer:
11.313708498984760390413509793678 (round that)
Step-by-step explanation:
use pythag thorem, a^2 + b^2= c^2
a is 8 and b is 8 so square both and add them 64+64= 128
then take square root of 128 to find length c
and you get 11.313708498984760390413509793678
you are welcom
Similar shapes have the same angles. These two triangles have no angles in common, so they're not similar.