The sum of Dina's and Cora's ages is 30. Three years ago, Cora was three times as old as Dina. What are their present ages?​

Find the volume of the solid generated when the region bounded by y= x and y= 4√x is revolved about the x-axis the volume of the solid is: (type an exact answer cubic units)

Thee blue triangle has rotated from quadrant i to quadrant iii about the origin. describe the effects of the rotation on the coordinates of the blue triangle.

What is the value for this expression? 2e-5