1) Find the mean and standard deviation of the distribution given by the following table. Does the table describe a probability distribution? Justify your answer mathematically.
Х P(x)
-1 .848
S 126
10.026
b) If the table describes the possible outcome of a gambling game and x is represents dollars,
how much would expect to win or lose if you play the game 100 times?

Adriveway is 60-feet long by 6-feet wide. the length and width of the driveway will each be increased by the same number of feet. the following expression represents the perimeter of the larger driveway: (x + 60) + (x + 6) + (x + 60) + (x + 6) which expression is equivalent to the expression for the perimeter of the larger driveway? a) 2(x + 66) b) 4x + 33 c) 4(x + 33) d) 4(x + 132)

For each proportion find the unknown number x 1/5/8=×/15

Which shows the correct lengths of side c in both scales? scale 1: 45 m; scale 2: 60 m scale 1: 60 m; scale 2: 45 m scale 1: 36 m; scale 2: 27 m scale 1: 27 m; scale 2: 36 m mark this and return save and exit