An english professor assigns letter grades on a test according to the following scheme. a: top 7% of scores b: scores below the top 7% and above the bottom 59% c: scores below the top 41% and above the bottom 18% d: scores below the top 82% and above the bottom 8% f: bottom 8% of scores scores on the test are normally distributed with a mean of 75.7 and a standard deviation of 8.8. find the numerical limits for a c grade. round your answers to the nearest whole number, if necessary.

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 bsuppose 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 cnow try a numerical problem. what is the direction of the vector w = < -1, 6 > ?