I know this is really easy I just need help can someone find the perimeter of this shape

Given a(-12,5) and b(12,29) find the point that divides the line segment ab three-eighths of the way from a to b

To which sets of numbers does -12 belong? choose all answers that are correct. a) natural numbers b) integers c) real numbers d) irrational numbers

David is spreading mulch on a triangular area of his flower bed. the coordinates of the vertices of the area are (1, 3), (9, 3), and (4, 6). what is the area of the triangle if each square has an area of 3 square feet?