TAILIEUCHUNG - Wiley publishing inc GMT for dummies Episode 2 part 3

Tham khảo tài liệu 'wiley publishing inc gmt for dummies episode 2 part 3', ngoại ngữ, ngữ pháp tiếng anh phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | Chapter 16 All Together Now A Practice Mini Quantitative Section 233 Then develop this equation further with the information provided by statement 2 . Begin with the easy value. Trip 2 would take 3 hours so r2 X 3 d2. You also know that Ms. Nkalubo s speed for Trip 1 was 13 or 54 the speed of Trip 2. Therefore r2 . So now you have this equation for Trip 2 X 3 d2 You should also recognize that d1 and d2 have the same value because the distances of the two trips are the same it s the same trip . Therefore you can set the left side of the first equation equal to the left side of the second. At this point you have an equation with only one variable so you know you can solve for the exact length of Ms. Nkalubo s trip. Statement 2 s information is sufficient to answer the question. Correct answer B. For those of you who hate to be left hanging and need to see how the equation turns out we ll finish out the calculations. Just remember you shouldn t do this part for the test it s a waste of time. Here s what the equation looks like r1 X t1 54r1 X 3 Are you with us so far If not see Chapter 11 for more about working with simultaneous equations. Divide both sides of the equation by rp t1 54 X 3 t1 154 of an hour is the same as 33 hours. The family was probably ready for some action after almost four hours in the car 13. The arithmetic mean and standard deviation for a certain normal distribution are and respectively. What value is more than standard deviations from the mean A B 6 C D E Don t let the language of this problem scare you. You re really just applying basic operations. The arithmetic mean is and the standard deviation is so you ll use a deviation of to find values that stray from the mean. This means that the values that are one standard deviation from the mean are 11 and 8 which is the mean plus or minus the standard deviation . The values two standard deviations from the mean are and which you get from

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