A group of 6 students was asked, "How many hours did you watch television last week?" Here are their responses.
6, 19, 16, 6, 17, 6
Find the mean number of hours for these students.
If necessary, round your answer to the nearest tenth.

11.7

Step-by-step explanation:

Mean = sum of responses/ number of responses

Add the responses together then divide by number of responses.

= 6+19+16+6+17+6/6

=70/6 =11.667

11.667 to the nearest tenth = 11.7

I hope this helps.

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".

step-by-step explanation: