In triangle ABC, measure of angle CAB=40 and measure of angle ABC=60. Circle, going through points A and C, intersects sides AB and BC in points D and E respectively. Find all angles in quadrilateral ACED.

Solve the system of equations. y= 2x y= x^2 - 15

Determine the common ratio and find the next three terms of the geometric sequence. 10, 2, 0.4, a. 0.2; -0.4, -2, -10 c. 0.02; 0.08, 0.016, 0.0032 b. 0.02; -0.4, -2, -10 d. 0.2; 0.08, 0.016, 0.0032 select the best answer from the choices provided a b c d

Determine the area of a triangle with (see picture below)