Adiagonal of a parallelogram is 50 inches long and makes angles of 37°10' and 49°20' with the sides. solve for the longest side of the parallelogram.

first off, did i do this right and secondly, what do 37°10' & 49°20' mean?

Express the following as a function of a single angle, cos(60) cos(-20) - sin(60) sin(-20)

10 ! in a race, nick is 50 feet in front of jay after ten seconds. how fast can nick run, if jay can run 20 feet per second?

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?