Of the 60 books on a bookshelf,24 are non-fiction. what percent of the books are non fiction. fiction?

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

Aline has a slope of 1/4 and passes through point (0.4,-1/2). what is the value of the y-intercept?

Complex numbers multiply √-4 * √-25 and show all intermediate steps. alternative notation is sqrt(-4) * sqrt(-25).