CLASS OPENER: Is the given sequence arithmetic, if so what is the common difference? 1.1,4,9,16… 2.-21, -18, -15, -12… 3.97, 86, 75, 64… 4.0, 1, 3, 6,

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CLASS OPENER: Is the given sequence arithmetic, if so what is the common difference? 1.1,4,9,16… 2.-21, -18, -15, -12… 3.97, 86, 75, 64… 4.0, 1, 3, 6, 10… Find the 45 th term in the following sequence: 1. 13, 17, 21, 25 …

QUIZ TIME Show all work!!!! Make sure your name and class period are on the answer sheet. Take your time.

ARITHMETIC MEAN:

USING ARITHMETIC MEAN Find the missing term of the arithmetic sequence: 84, ??, , ??, 57 50, ??, 92

EXAMPLE: The arithmetic mean of two terms in an arithmetic sequence is 42. One term is 30. Find the other term.

STUDENT CHECK: 1. The arithmetic mean of two terms in an arithmetic sequence is -6. One term is -20. Find the other term.

STUDENT CHECK: Explain how to use the arithmetic mean to find the missing terms in the arithmetic sequence: 15, ?, ?, ?, 47

CHALLENGE