If two triangles are congruent, which of the following statements must be true? check all that apply. a. the triangles have the same shape, but not the same size. b. the corresponding sides of the triangles are congruent. c. the corresponding angles of the triangles are congruent. d. the triangles have the same shape and size.

Two planes leave an airport at the same time, one flying east, the other flying west. the eastbound plane travels 20 mph slower. they are 1600 mi apart after 2 hr. find the speed of each plane.

Determine whether the points (–3,–6) and (2,–8) are in the solution set of the system of inequalities below. x ? –3 y < 5? 3x + 2 a. the point (–3,–6) is not in the solution set, and the point (2,–8) is in the solution set. b. neither of the points is in the solution set. c. the point (–3,–6) is in the solution set, and the point (2,–8) is not in the solution set. d. both points are in the solution set.

For what value of (y) is 3^3/3^y =1/9