On a shopping trip kellen spent $3 on a bus ticket $9 on a book and $5 after the trip . how much money did he start with

How do i simply this radical expression?

Find the percent error of the measurement 4 cm

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?