Find the equation of a line with the given points.(put your answers in the form y=mx+,2)(5,4)

The fence around a quadrilateral-shaped pasture is 3a^2+15a+9 long. three sides of the fence have the following lengths: 5a, 10a-2, a^2-7. what is the length of the fourth side of the fence?

The perimeter of a rectangle is 42 inches. if the width of the rectangle is 6 inches, what is the length

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.