If a line is perpendicular to another, and one slope is -2, what is the slope of the other line

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

Factor x2 – 8x + 15. which pair of numbers has a product of ac and a sum of what is the factored form of the

Jalen charges $25.50 for every 3 hours of yard work he does for his neighbors. ralph charges $34 for every 4 hours of work that he does. who charges less? opinions: 1.they charge the same amount 2.jalen 3.ralph