Which property is illustrated? 11. 0 + a = a
12. -k + k = 0
13. 7 + (-8.3) = -8.3 + 7
14. (-2 + 8) + 5 = –2 + (8 + 5)

The lengths of all sides of a triangle are integers when measured in decimeters. one of the sides has length of 1 dm and another of 3 dm. find the perimeter of the triangle.'

Hey hotel charges guests $19.75 a day to rent five video games at this rate which expression can be used to determine the charge for renting nine video games for one day at this hotel? pls

Plzzz answer both questions and i will give you 100 points