RM Unity Lesson
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Arithmetic sequences
Identifying arithmetic sequences
Which of these are arithmetic
sequences?
3, 6, 9, 12, ...
-2, 1, 4, 7, ...
27, 27.75, 28.5, 29.25, ...
1, 2, 3, 5, ...
1, 3, 9, 27, ...
1, 1.30, 1.60, 1.90, ...
2, 12, 22, 32, ...
2, -2, -6, -10, ...
6, 16, 116, 1116, ...
2, 11, 36, 45, ...

Jeffery conducted a survey in his school and found that 30 of the 50 eighth grade students' favorite subject is mathematics. based on the results, jeffery concluded that out of the 200 students in his school, 120 students' favorite subject is mathematics. select the statement that is true about jeffery's conclusion. a. jeffery's conclusion is not valid because the sample was biased since only 200 students were surveyed. b. jeffery's conclusion is valid because the sample was random since all of the students were eighth grade students. c. jeffery's conclusion is valid because the sample was random. d. jeffery's conclusion is not valid because the sample was biased since all of the students were eighth grade students.

Which of the following is the explicit rule for a geometric sequence defined a recursive formula of a -5a for which the first term is 23?

Madeline takes her family on a boat ride. going through york canal, she drives 6 miles in 10 minutes. later on as she crosses stover lake, she drives 30 minutes at the same average speed. which statement about the distances is true?