What do opposite faces of a die always add up to?

quoting from the article itself:

"since it is above earth's atmosphere, it gives us clearer pictures of space than telescopes on earth can."

b

step-by-step explanation:

the word superfluous means unnecessary

check above link.

graphically?   well, you graph them both, the solutions is where they both intersect each other, since there are two solutions, meaning they will meet twice, or namely the linear will run into the quadratic curve twice, and where they meet, those x,y coordinates are the solutions to the system.