If 3x-6y = 9z, which of the following expressions is equivalent to x^2-4xy+4y^2? a. 9z b. 3z^2 c. 9z^2 d. 81z^2 i need on how to solve this problem, you.

Me! 50 points! why does when we come home, our door is unlocked and there is grease on the door knob, me solve this , and i don't know what category this goes under

If you are trying to move an attached term across the equal sign (=), what operation would you use to move it?

On traditional maps, earth is represented in a flat plane, or by euclidean geometry. however, a globe is a more accurate model that comes from elliptical geometry.how does a globe represent the fact that there are no parallel lines in elliptical geometry? the equator is not parallel to any other latitudinal lines. the north and south poles are never connected by a geodesic. the geodesics connecting the north and south poles never intersect. the geodesics connecting the north and south poles intersect at both of the poles.