Simplify (3x2 − 3 + 9x3) − (4x3 − 2x2 + 16).

How many kilometers are equal to 5 miles? use 1 mile ≈ 1.61 kilometers. !

Agraph of a trapezoid can have diagonals with slopes that are negative reciprocals and two pairs of adjacent sides that are congruent, true or false, and why

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?