Fourth one i think (the way u typed the q is confusing)
<h3>
Answer:</h3>
<h3>
Explanation:</h3>
<u>Sequence</u>: 1.2, 0.4, -0.4, – 1.2, -2,...
See that with every next term, the integers are decreasing by 0.8
- So, common difference (d) = -0.8
<u>recursive formula</u> : 
Answer:
0.55
Step-by-step explanation:
The right-hand column of the table gives us the probabilities of the probability function. We know from elementary probability theory that the "probability" of any event(s) happening would be from 0 to 1 inclusive.
The total probability of all events would add up to 1. So, we look at the probabilities given for each even, x, and add them:
0.29 + 0.09 + 0.03 + 0.04 = 0.45
All of these probabilities and the probability at x = 2 (the unknown) would add up to 1, so we can say:
0.45 + probability (x = 2) = 1
Probability at x = 2 = 1 - 0.45 = 0.55
Add up all the 'x's: (1 of them) plus (3 of them) = 4 'x's
Add up the just-plain-numbers: 93 + 18 = 111
Write them together: 4x + 111
