In the system shown below, what is the sum of the x-coordinates of all solutions?
3y2 - 5x2 = 7
3y2 - x2 = 23

What is not true about kl and mn? what is mn? (show your work)

Astick 2 m long is placed vertically at point b. the top of the stick is in line with the top of a tree as seen from point a, which is 3 m from the stick and 30 m from the tree. how tall is the tree?

Can someone me with this? i’m not sure what to put for my equations.