Answer:
2.42
Step-by-step explanation:
standard deviation= sqrt(variance)
Variance=E[X2] - E[X]2
E[X] = sum(X)/n=35/9, so E[X]2 = 1225/81
E[X2] =sum(X2)/n = 189/9 = 170/81
Variance= 476/81
Standard deviation = sqrt(476/81) ~2.42
Walter I believe is the correct answer
Answer:
Perimeter of the Triangle

Answer:
4
hours
i hope that helped
Step-by-step explanation:
Answer:
-11
Step-by-step explanation:
-9 +(-1) 2
-9 - 1 x 2
-9 - 2
-11