The third term of an arithmetic sequence is 15 and when 20 is added to the third term the 8 term is obtained
a) What is the common difference of the sequence?
S
b) What is the position of 103 in this sequence?​

Common difference = 4

Position of 103 = 25th term

Step-by-step explanation:

a)

According to the given information:

Common difference = 4

b)

So, the position of 103 in this sequence is 25th term.

(w – 2.5)(w + 2.5)

(–4v – 9)(–4v + 9)

step-by-step explanation:

85.560%

step-by-step explanation:

conditional probability is defined as:

p(a|b) = p(a∩b) / p(b)

in other words, the probability that a occurs, given that b has occurred = the probability that both a and b occur / the probability that b occurs.

in this example:

p(turns 64 | turns 44) = p(turns 64 & turns 44) / p(turns 44).

if someone turns 64, they must have already turned 44, so:

p(turns 64 | turns 44) = p(turns 64) / p(turns 44)

on page 42, we see that of the original 100,000, 94944 turn 44, and 81234 turn 64.   therefore:

p(turns 64 | turns 44) = 81234 / 94944

p(turns 64 | turns 44) = 0.85560