The number of students at a school who ate in the cafeteria yesterday can be represented by the expression 4/5k where k is the number of students in the school which expression is equivalent to 4/5k and so special selection of students who did not eat in the cafeteria yesterday

1. there are 25 students who started computer programming in elementary school and 25 students who started computer programming in middle school. the first group had a mean final project grade of 95% and the second group had a mean final project grade of 92%. the line plot shows the differences after 10 rerandomizations. determine whether the difference in the means of the two groups is significant based on the line plot. explain your answer.

Is a positive integer raised to a negative power always positive

How do you write something in scientific notation?