<span>mean: ( 9 + 7 + 6.5 + 7.5 + 7 + 8 + 5 + 6 + 7.5 + 8 ) : 10 = 7.15Variance:(Sigma)² = ( 1.85² + 0.15² + 0.65² + 0.35² + 0.15² + 0.85² + 2.15² + 1.15² + 0.35² + 0.85² ) : 10 ≈ 1.15Answer: C ) 1.15</span>
C. By three feet 7x5=35 area 7x10=70 area 7+3=10
Excellent 43.0000
Answer 8747744748848833773737374758
Answer: (C)2x + 8Y = 16
(0,2)
(8,0)
<span>Check the chart for a better understanding:
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