Using a special discount, you download 15 songs for $10.68. The regular price of H song is a is $0.89. What is the percent of the discount? due tomorrow please hurry

What is the standard deviation of the following data set rounded to the nearest tenth? 3, 17, 18, 15, 12, 21, 9

Afrequency table of grades has five classes (a, b, c, d, f) with frequencies of 3, 13, 14, 5, and 3 respectively. using percentages, what are the relative frequencies of the five classes?

X+y=-4 x-y=2 use elimination with adding and subtraction