Find the 51th term of the arithmetic sequence 25, 12 and -1

-625

Step-by-step explanation:

1. the formula is:

where n - the number of the required term, d - the step between two neighbor terms, a₁ - the first term of the given sequence.

2. according to the formula above:

answer: expected value of x = 1.0

step-by-step explanation:

p(x=0) = 0.25

p(x=1) = 0.50

p(x=2) = 0.25

expected value for x = 0×0.25 + 1×0.5 + 2×0.25 = 1.0