Step-by-step explanation:
Answer:
x = -10
3(x + 4) = -18
3x + 12 = -18
3x = -18-12
3x = -30
x= -30/3
P(A and B) = 0.1
72
160
13² - 3² = 13 × 13 - 3 × 3 = 169 - 9 = 160