40) D
41) A
42) B
good luck
Answer:
x = 11, y=-½
Step-by-step explanation:
Simultaneous equations - subtract the first equation from the second.
x + 4y = 9
-(x - 2y = 12)
6y = -3
y = -½
Substitute y
x + 4(-½) = 9
x + -2 = 9
x = 11
The correct answer would be (C.) x>90
10 + 10 = 20.
Hope this helps! :)
