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# What is the common difference of 31, -169, -369, -569? ### Another question on Mathematics Mathematics, 04.02.2019 21:36
Alfred is practicing typing. the first time he tested himself, he could type 26 words per minute after practing for a week he could type 28 words per minute after two weeks he could type 30 words per minute based on the pattern predict how fast alfred will be able to type after four weeks of practice Mathematics, 04.02.2019 16:57
What is the first step of an indirect proof of a number that is divisible by two Mathematics, 02.02.2019 20:10
Name and describe the three most important measures of central tendency. choose the correct answer below. a. the mean, sample size, and mode are the most important measures of central tendency. the mean of a data set is the sum of the observations divided by the middle value in its ordered list. the sample size of a data set is the number of observations. the mode of a data set is its highest value in its ordered list. b. the sample size, median, and mode are the most important measures of central tendency. the sample size of a data set is the difference between the highest value and lowest value in its ordered list. the median of a data set is its most frequently occurring value. the mode of a data set is sum of the observations divided by the number of observations. c. the mean, median, and mode are the most important measures of central tendency. the mean of a data set is the product of the observations divided by the number of observations. the median of a data set is the lowest value in its ordered list. the mode of a data set is its least frequently occurring value. d. the mean, median, and mode are the most important measures of central tendency. the mean of a data set is its arithmetic average. the median of a data set is the middle value in its ordered list. the mode of a data set is its most frequently occurring value. Mathematics, 02.02.2019 04:27
Can someone me with my math problems i have a bunch. i will give brainliest and lots of pleeeaaasssee
What is the common difference of 31, -169, -369, -569?...
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