The value ( in credis) of a piece of jade varies directly as the cube of its volume ( in cm^3). If the value of a piece of jade of volume 2cm^3 is 6720 cedis, find the value of a piece of jade of volume 3.5 cm^3. If the piece of jade of volume 2cm^3 is broken into two parts of equal volume, what would be the percentage loss in its value?

I've been working on this for a few days and i just don't understand, it's due in a few hours. you. the direction of a vector is defined as the angle of the vector in relation to a horizontal line. as a standard, this angle is measured counterclockwise from the positive x-axis. the direction or angle of v in the diagram is α. part a: how can you use trigonometric ratios to calculate the direction α of a general vector v = < x, y> similar to the diagram? part b suppose that vector v lies in quadrant ii, quadrant iii, or quadrant iv. how can you use trigonometric ratios to calculate the direction (i.e., angle) of the vector in each of these quadrants with respect to the positive x-axis? the angle between the vector and the positive x-axis will be greater than 90 degrees in each case. part c now try a numerical problem. what is the direction of the vector w = < -1, 6 > ?