The answer will be x= -3/5
13, because 78 postcards divided by 6 cards per board = 13 poster boards
Answer:
integer represented as a minus the integer represented as b
It cannot be 30, because the sum of two sides should be more than third side
-not D
10+18=28 <30
it cannot be 6 +10 < 18
it cannot 8
8+10=18
so it is has to be C) 12
12+18>10
10+12>18
10+18>12
answer C. 12 cm
