A: top

11%

of scores

b: scores below the top

11%

and above the bottom

61%

c: scores below the top

39%

and above the bottom

16%

d: scores below the top

84%

and above the bottom

6%

f: bottom

6% of scoresscores on the test are normally distributed with a mean of 81.8 and a standard deviation of 7.8. find the minimum score required for an a grade. round your answer 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 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 > ?