-1 - (-7) = 6
5 - (-1) = 6
11 - 5 = 6
The common difference is 6.
If you add 6 to a term, you get the next term.

Answer:41a
Step-by-step explanation: when you multiply a number and a variable it will give you the number and the variable which is the unknown
Answer:
Find the sixth term of the geometric sequence when a4=−8 and r=0.5
Step-by-step explanation:
Answer:
-764.28
Step-by-step explanation:
Given the joint cumulative distribution of X and Y as

#First find
and probability distribution function ,
:

#Have determined the probability distribution unction ,
, we calculate the Expectation of the random variable X:

#We then calculate
:

Hence, the Var(X) is 764.28