For the school play, most of the chairs are rows of 10 each, with one row of 8 chairs. if there are 78 chairs in altogether, how many rows are there?

Which is the correct excel formula for the 80th percentile of a distribution that is n(475, 33)? =norm.dist(80,475,33,1) =norm.inv(0.80,475,33) =norm.s.inv((80-475)/33)?

One month, a music site observed that 60% of the people who downloaded songs from its site downloaded q sam's latest single. the equation below represents this information, where x represents the total number of people who ddownloaded songs from the site that month: x = 0.6x + 384 how many people who downloaded songs from the site that month downloaded q sam's latest single?

A. what does the point (4, 122) represent? b. what is the unit rate? c. what is the cost of buying 10 tickets?