Samantha M. answered • 12/01/16
Tutor
5
(15)
Friendly, experienced tutor
If a sequence is arithmetic then there is a COMMON difference between the terms, or the number that you add to get from one term to the next is the same.
-1 - 1 = -2 (second term - first term) which means to get from the first term to the second term you add -2
2-(-1) = 3 (third term - second term) which means to get from the second term to the third term you add 3
These differences aren't equal, so the sequence is not arithmetic.
The answer is b or c.... they're the same
-1 - 1 = -2 (second term - first term) which means to get from the first term to the second term you add -2
2-(-1) = 3 (third term - second term) which means to get from the second term to the third term you add 3
These differences aren't equal, so the sequence is not arithmetic.
The answer is b or c.... they're the same
Samantha M.
(b) no because a3-a2 ≠ a2-a1.
(c) no because a3-a2 ≠ a2-a1.
that's what you have written
(c) no because a3-a2 ≠ a2-a1.
that's what you have written
Report
12/01/16
Elex M.
OMG. I'm so sorry about that!! My apologies Samantha. It should say this:
(b) a3-a2 ≠ a2-a1.
(c) a3-a2 = a2-a1.
Report
12/01/16
Asia M.
So is it b or c given the correction?
Report
12/02/16
Asia M.
12/01/16