Question 10 1
2.
3
P(x)
0.05
0.1
0.3
0.55
Find the standard deviation of this probability distribution. Give your answer to at least 2 decimal places
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The coordinates of vortex a’ are (8,4) (-4,2) (4,-,4) the coordinates of vortex b’ are (6,6)(12,-,12)(12,12) the coordinates of vortex c’ are(-2,,12)(4,12)(12,-4)

The length of a rectangular board is 3 feet less than twice its width. a second rectangular board is such that each of its dimensions is the reciprocal of the corresponding dimensions of the first rectangular board. if the perimeter of the second board is one-fifth the perimeter of the first, what is the perimeter of the first rectangular board?  

Brad earns $12.75/hr and works 40 hours a week. what is his gross annual income?