The numbers of hours that 12 students say they typically spend on homework in a week are 0,2,8,8,8,8,8,8,10,10,10,10. what is the mean?

7.5 hours

Step-by-step explanation:

The mean is found by adding up the total of the numbers, then dividing the sum over the number of numbers.

Here, it is: (0 + 2 + 8 + 8 + 8 + 8 + 8 + 8 + 10 + 10 + 10 + 10)/12.

That is equal to 90/12, which is equal to 7.5 hours.

hope it you

step-by-step explanation:

sin(7pi/6 - pi/3)  

= sin(7pi/6 - 2pi/6)  

= sin(5pi/6)  

= sin(pi - pi/6)  

= sin(pi/6)  

= 1/2  

sin 7pi/6 - sin pi/3  

= sin (pi + pi/6) - sin pi/3  

= -sin pi/6 - sin pi/3  

= -1/2 - sqrt(3)/2  

= -(1+sqrt(3))2