The formula of a midpoint between two points:

We have:

Substitute:

Answer: 
Answer: 4.5 I think
Step-by-step explanation:
(x+2y)(x-5y)
do foil method:
x^2-5xy+2xy-10y^2
simplify x^2-3xy-10y^2,
so d is correct.
Answer:
i think that this is a great idea, but maybe instead of $5 bucks everytime they do good work, maybe just like 50 bucks at the end of the quarter, if they get good grades.
Step-by-step explanation: