Rewrite the expression in the form b ^ n (b ^ - 2)/(b ^ 4) =

Ihave this math question 2/3 ÷2 1/10=

Samantha swam upstream for some distance in one hour. she then swam downstream the same river for the same distance in only 12 minutes. if the river flows at 4 mph, how fast can samantha swim in still water?

Rhombus adef is inscribed into a triangle abc so that they share angle a and the vertex e lies on the side bc . what is the length of the side of the rhombus if ab=c, and ac=b.