Find tan a for the triangle below.
a. 2.5 b. 0.4 c. 2.67 d. 0.375

When can u say there is no solution for a system of linear inequalities? explain your answer and show with a system and graph

12 point are triangles pqr and stu congruent? what is the congruency that proves they are congruent? what is the perimeter of triangle pqr?

The volume of a sphere is increased by 6%. calculate the corresponding percentage increased in it area.