Answer:
( a ) 99°
( b ) 151°
Step-by-step explanation:
( a )
( 180 - 81 )° = 99°
( b )
( 180 - 29 )° = 151°
im gonna say d not sure, 10% is 5 dollars off tho
The standard deviation of a particular sample is equal to the standard deviation divided by the square root of the sample size. That is,

The mean of a particular sample is equal to the mean of the set the sample was taken from. That is,

19) 5c+c=-6+2
6c=-4
c=-4/6
c=-2/3
20) -20-8=-2e
-28=-2e
28/2=e
14=e
21)p-2w=2l
(p-2w)/2=l