The line plots show the number of minutes two different age groups of teenagers spent online the previous week. Select from the drop-down menus to complete each statement.

1) The range is _.
a) is greater for data set one (13-15-year-olds)
b) is greater for data set two (16 to 18-year-olds)
c) is the same for both sets of data

2) The mean _.
a) is the same for both sets of data
b) is greater for data set one (13-15-year-olds)
c) is greater for data set two (16 to 18-year-olds)

Step-by-step explanation:

13-15 year olds:

Range: 13

Mean: 27.4

16-18 year olds:

Range:24

Mean: 28.05

Therefore,

1) the range is greater for set two

2) the mean is greater for set two as well

1. B

2. C

Step-by-step explanation:

21

step-by-step explanation:

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