The lengths of most older u. s. swimming pools are multiples of yards, generally 25 yards. however, newer pools are 25 or 50 meters long. suppose an american swimmer is practicing for a 200-meter race. four lengths of the pool is 200 yards, which is "close" to 200 meters. how close is it? that is, how much shorter is 200 yards than 200 meters? first predict the amount, using only mental math. explain how you got your prediction and how you did the operations in your head.

The local farm is advertising a special on fresh picked peaches. the farm charges $4.25 to pick your own peck of peaches and $3.50 for each additional peck you pick. write an equation for the total cost of peaches in terms of the number of pecks. deine your variables. how much does it cost to pick 3 pecks of peaches?

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?

In the geometric progression –3, 12, −48… what term is 3,072?