The width of a rectangular greenhouse is one- fourth of its length, and its perimeter is 130 m. Find
the length and the width of the greenhouse.

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.

Whats are the trickiest steps to do when adding or subtracting rational expressions? how does knowledge of rational numbers u in adding and subtracting rational expressions?

The longer leg of a 30-60-90 trangle is 18