"The world will not be destroyed by those who do evil, but by those who watch them without doing anything" -Albert Einstein

Ammonia molecules have three hydrogen atoms and one nitrogen atom.how many of each atom arein five molecules of ammonia

Astore has clearance items that have been marked down by 60%. they are having a sale, advertising an additional 55% off clearance items. what percent of the original price do you end up paying?

If the discriminant if a quadratic equation is 4 which statement describes the roots?