How many solutions do linear equations have? -2x - 3y = 7
-0.4x - 0.6y = 1.4

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

Ineed ! the person who answers and shows their work on they got the answer first will be marked the !

Moira has a canvas that is 8 inches by 10 inches. she wants to paint a line diagonally from the top left corner to the bottom right corner. approximately how long will the diagonal line be?