Mis Brown graded 84 papers. If the ratio of science papers to math papers is 2:10 how many math papers did she grade?

To describe a sequence of transformations that maps triangle abc onto triangle a"b"c", a student starts with a reflection over the x-axis.how should the student complete the sequence of transformations to map triangle abc onto triangle a"b"c"? plz

Simplify the expression. -2/5(10+15m-20n)

Ann and betty together have $60 ann has $9 more than twice betty’s amount how much money dose each have