Find the percentage decrease in the area of triangle if each of its side is halved. (by using heron\'s formula)

Rewrite the following quadratic functions in intercept or factored form. show your work. y = 9 + 12x + 4x^2

Factor the polynomial by its greatest common monomial factor.

When a 757 passenger jet begins its descent to the ronald reagan national airport in washington, d.c., it is 3900 feet from the ground. its angle of descent is 6 degrees. how far must the plane fly to reach the run way? a. 37,106 ft b. 37,310.4 ft c. 23,456.6 ft d 2,492.7 ft