To test the quality of its books, a printing press randomly picks a book from its press and then selects every twentieth book off the press for a half hour. Which sampling method is used?
lottery method
random number table
stratified random sampling
systematic random sampling

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exa:

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3+11

14

step-by-step explanation:

from this example, we can see that subtracting with integers is the same as adding the opposite. we can solve using a number line or by using the saying "keep, change, change" to us solve. it is important to remember that we can subtract a negative and end up with a larger number than we started with.

14

step-by-step explanation:

14