What is x(2)+y(6) if x=4 and y=(-4)

Also, can anyone just talk?

The line containing the midpoints of the legs of right triangle abc where a(-5,5), b(1, 1), and c(3, 4) are the vertices.

Some boys and girls were asked if they had a pet. one third of the group were boys. there were 20 boys. 20% of the girls had a pet. boys with a pet : girls with a pet = 1 : 5 i need to know how many girls there are.

How many solutions does the nonlinear system of equations graphed below have? a. one b. zero c. four d. two