Circle o is shown. secant a c intersects tangent c d at point c outside of the circle. secant a c intersects circle o at point b and tangent c d intersects circle o at point d. point e is on arc a d. angle a c d is 57 degrees. aaron is standing at point c, watching his friends on a ferris wheel. he knows that he is looking up at a 57° angle and the measure of arc bd is 80°. what is the measure of arc aed?

1. suppose that scores on a knowledge test are normally distributed with a mean of 71 and a standard deviation of 6. a. label the curve: show the mean and the value at each standard deviation: b. if angelica scored a 76 on the test, what is her z-score? (draw her score on the curve above and label) c. what percent of students did angelica score higher than? how can you tell? d. if 185 students took the test, how many students scored higher than angelica?