The random variable X takes on the values of 2,5, n, and 15. The probability distribution of X is shown in the following table. X
2
5
n
15
P(X)
0.1
0.4
0.2
0.3
The expected value of X is 9.1. What is the value of n ?

Anew shopping mall is gaining in popularity. every day since it opened, the number of shoppers is 5% more than the number of shoppers the day before. the total number of shoppers over the first 10 days is 1258 how many shoppers were on the first day?

45 was divided by a power of ten to get 4.5. what power of ten was it divided by? people 4.5

Will mark determine whether the conjecture is true or false. give a counterexample for any false conjecture. given: points r, s, and t conjecture: r, s, and t are coplanar. a) false; the points do not have to be in a straight line. b) true c) false; the points to not have to form right angles. d) false; one point may not be between the other two.