The perimeter of a rectangle is 84 feet. The ratio of the width to the length is 2:5. Determine the length of this rectangle. Round your answer, as necessary, to the nearest whole foot.

given : the shape of his satellite can be modeled by   where x and y are modeled in inches.

now,the given equation   is a equation of parabola.

here, coefficient of x is positive, hence the parabola opens rightwards.

on comparing this equation with standard equation , we get

in standard equation, coordinates of focus=(0,m)

thus for given equation coordinates of focus=(0,1.5)

step-by-step explanation:

6 equilateral triangles