Suppose that the characteristic polynomial of some matrix a is found to be (lambda - 1)(lambda - 3)^3 (lambda - 5)^5 (lambda - 7)^7. what is the dimension of a? what is the determinant of a? is a invertible? how many eigenspaces does a have?

Jayne is studying urban planning and finds that her town is decreasing in population by 3% each year. the population of her town is changing by a constant rate. true or false?

Find the measure of angle a in the following triangle

Walgreens sells both kleenex and nyquil. in a random sample of 5000 purchases, it was found that 1200 contained kleenex and 540 contained nyquil. these are not independent because sick people are more likely to buy both and healthy people more likely to buy neither. in looking into that, it was found that 360 purchases contained both. a. make a two-way table to display this information. fill in the table with the missing entries, and be sure your table has row and column totals. b. if we randomly select a purchase that contained kleenex, what is the probability it also contained nyquil? c. what percent of all purchases didn’t contain either product?