Amelio has 6 more nickels than dimes, and the total value is $2.10. how many nickels does he have?

Aplot of land is shaped like a quadrilateral. fences are built on the diagonal to divide the area into 4 sections. what is vi to the nearest tenth? gv = 6.55fv = 5.84vh = 3.27vi = ?

In the polynomial below, what number should replace the question mark to produce a difference of squares? x2 + ? x - 36

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?