5. is the sequence arithmetic? if so, identify the common difference.
14, 21, 42, 77,
yes; 7
yes; –7
yes; 14
no
6. what is the 12th term of the sequence 10, 6, 2, …?
–16
–24
–34
–38
7. find the missing term of the arithmetic sequence 22, , 34,
46
16
28
40

5. The correct option is 4. No, the given sequence is not arithmetic.

6.The option 3 is correct and the 12th term of the sequence is -34.

7. The option 3 is correct and the missing term of the arithmetic sequence is 28.

Step-by-step explanation:

5.

The given sequence is

Since , therefore it is not an arithmetic sequence. Option 4 is correct.

6.

The given sequence is

First term is 10 and common difference is -4.

The formula for nth term is

Therefore option 3 is correct and the 12th term of the sequence is -34.

7.

The given sequence is

22, ___ , 34, ...

In an arithmetic sequence

Therefore option 3 is correct and the missing term of the arithmetic sequence is 28.

right

step-by-step explanation: