Answer: 9
Step-by-step explanation: 31-4=27
Answer:
B.
Step-by-step explanation:
Just replace each variable to what it is equal to. For example, replace the a variable in ab + cd with 2.
2 * -3 + 4 * -5 =
First, do the multiplication.
2 * -3 + 4 * -5 =
-6 + -20 =
Add up.
-6 + -20 = -26
So, the answer to this question is -26.
Answer:

Step-by-step explanation:
This arithmetic sequence begins with 19, and for each consecutive value it subtracts 5. Therefore, the rule for this is:

Hope this helps!
Answer:
No.
Step-by-step explanation:
A geometric sequence has a common ratio, which this doesn't.
An example of a geometric sequence would be 3,6,12,24 w/ a common ratio of 2. (3 x 2 = 6) (6 x 2 = 12)