Answer:
Use pythagoreum theorem to determine whether it is or isn't since I'm not really sure myself but here's my calculations.
Step-by-step explanation:
We need to find AC.
Picture a triangle called ABC. AB is one side and BC the other while AC is the hypotenuse.
AC=

Round up the 7.6 to a whole number and you get AC=8. To get perimeter of a triangle simply add the sides together to get 18.
Not really sure about my answer but hope this helped.
It’s 9b it’s just 4+5 with the b
Answer: Points A,B, and C are collinear
Step-by-step explanation:
If the girls were counted as negative and the boys positive. It would be -2 couples