Step-by-step explanation:
B) b = 9
C) 7 + 19 = 26
O) a + 9 > 72 <=> a > 63 <=> a = (64, 65, 66, ...)
answer: i don't understand it
step-by-step explanation: sorry
1. sometimes
2. never true
3. sometimes
step-by-step explanation:
these are pretty self explanatory if you know what supp right and com angles are