Answer:
b 20.6
Step-by-step explanation:
Answer:
y = 65
Step-by-step explanation:
45 + 57 = x + y
x = 37
45 + 57 = 37 + y
45 + 57 = 102
102 = 37 + y
102 = 37 + y
-37 -37
102 - 37 = 65
37 + y - 37 = y
65 = y
y = 65
Answer:
sorry I can't know.
you can ask from your teacher
B² - 4ac
= 8² - 4*(-2)*(-9)
= 64 - 72
= -8