A travelling salesman sells milkshake mixing machines and on average sells 8.4 machines per month. He needs to sell at least 3 machines each month order to stay in business, otherwise he will shut down. Determine the probability distribution used in this class which might appropriately be used to approximate the distribution of machine sales. What is the probability he will have to shut down after this month, i. e., sell fewer than 3 machines

P(X<3) = 0.01004

Step-by-step explanation:

From the given information:

Consider the application of Poisson distribution with the parameter ;

Therefore, we can calculate the required probability as follows:

P(X< 3) = P(X = 0) + P(X = 1) + P(X =2)

P(X<3) = 0.01004

he used the algebra tiles correctly.

step-by-step explanation:

given : 3x(2x-1)

solution :

since he used algebra tiles .

armando's solution is the same in the solution shown in figure

as he distributed 2x into x and x and wrote them vertically

and also write   -1 vertically

and 3x into x and x and x and wrote it horizontally

performing the multiplication in the algebra tiles we get

and solving the given expression :

3x(2x-1)

since solving the expression using tiles   and solving the expression algebraically we get the same answer

thus   we can choose the first statement as the answer to this problem which is "he used the algebra tiles correctly".