Write an equation using an exponent that would express year total rainfall explain how digits have shifted positions and why

Simplify (1/2)4th power a. (1/16) b.(1/8) c.(1/4)

Ireally need subtract and simplify.(-y^2 – 4y - 8) – (-4y^2 – 6y + 3)show your work, ! i will mark you brainliest but you have to show your work.

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.