Tumbleweed County has a population of 256. The county's border can be modeled by a rectangle with vertices A(-1,-1), B(-1,4), C(3,4), and D(3 -1), where each unit on the coordinate plane represents 1 mile. Find the population density of Tumbleweed County

Solve the system of equations. y= 2x y= x^2 - 15

Factor x2 – 8x + 15. which pair of numbers has a product of ac and a sum of what is the factored form of the

Do social recommendations increase ad effectiveness? a study of online video viewers compared viewers who arrived at an advertising video for a particular brand by following a social media recommendation link to viewers who arrived at the same video by web browsing. data were collected on whether the viewer could correctly recall the brand being advertised after seeing the video. the results are given below.correctly recalled the brandarrival 409153browsing20484b. conduct the hypothesis test, using the 0.025 level of significance.what is the value of the test statistic? χ2stat=what is the p-value? p-value=is this value significant atα=0.025?