Answer:
y=2
x=3
Step-by-step explanation:
make x - y = 1 into x= y + 1
put that wherever x is in the other equation
so y + 1 + 2y =7. then combine like terms into 3y =6. then divide 6 by 3 so you get y = 2
then substitute 2 into the y in the equation x - y = 1 and you get x = 3
Answer:
x>90
Step-by-step explanation:
x/3>30
(x/3)*3>30*3
x>90
Not sure on the equation but you could try drawing a probability tree
Group is the answer I think
