The deflection y(in m) of a 5.00 m beam as a function of the distance(in m) from one end is y = 0.0008(6 x^2 - 50 x^2). find the value of d^2y/dx^2(the rate of change at which the slope of the beam change), where x = 4.00. d^2y/dx^2 = (type integer or a decimal)

Which is a true statement about an exterior angle of a triangle a. it is formed by two segments that are not sides of the triangle, b. it forms a linear pair with one of the interior angles of the triangle, c. it is complementary to one of the interior angles of the triangle. d. it is formed by two segments that are sides of the triangle.

In δabc, m∠acb = 90°, cd ⊥ ab and m∠acd = 45°. find: a find cd, if bc = 3 in

In a right triangle δabc, the length of leg ac = 5 ft and the hypotenuse ab = 13 ft. find: b the length of the angle bisector of angle ∠a.