Answer:
b) 65.08
ii) 0.75
Step-by-step explanation:
x(Kg): 62 63 64 65 66 67 68
Frequency(f): 1 5 11 15 10 6 2
xf: 62 315 704 975 660 402 136
b) mean(X) = ∑xf/N = 3254/50 = 65.08
c) x - X : -3.08 -2.08 -1.08 -0.08 0.92 1.92 2.92
(x - X)²: 9.49 4.33 1.17 0.0064 0.85 3.69 8.53
ii) Standard deviation(S.D.): √(∑(x - X)²/N = √(28.0664)/50 = √0.5613
∴ S.D.= 0.75
Answer: 50.91 kilograms
Step-by-step explanation: Divide the number of pounds by the number of pounds in a kilogram.
112/2.2 = 50.91
There are 50.91 kilograms in 112 pounds.
The first piece is 20ft. The second piece is 40ft and the third piece is 60ft.
Answer:
6x + 1
Solutions? I don’t know 1? Unless you simplify it which I’m not sure about
Explanation:
3x + 12 = 3x + 4
3x + 3x = 6x
12 + 4 = 16
6x + 16