Number 10 is 257.08 inches of ribbon. I’m not sure about number 9
The answer is B !
( 3,6) and ( 3,-2)
Ok
the sets are
natural numbers (or counting numbers), this is like 1,2,3,4,5 etc
whole numbers, this is including 0, so 0,1,2,3,4,5,6 etc
integers, this includes the previoius set and negatives, so -3,-2,-1,0,1,2,3,4,5 etc
rational numbers, this is the set of numbers that can be written in form a/b where b≠0, so all integers can be written like this, like example -3=-3/1, so -7/9 belongs here
-7/9 goes in the rational set
Ratio is 1: 2:3
longest side = 12
12 / 3 = 4
4/2 = 2
shortest side is 2