12. a fruit basket contains oranges and grapefruits. one-third of the orange
and one-fourth of the grapefruits were spoiled. you threw away 4 oranges
and 7 grapefruits. how many pieces of fruit were in the basket?

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?

(60 points) explain this in detail

The mean of 10 values is 19. if further 5 values areincluded the mean becomes 20. what is the meanthese five additional values? a) 10b) 15c) 11d) 22