2
3. compute mean, variance, and standard deviation for the following probability
distribution (do calculations in fractional form).
0
8/27
1
12/27
2
6/27
3
1/27
p(x)
h(x) =
(2points)
o'(x) =
(4 points)
g(x) =
(1 point)

Which shows the correct solution of the equation 1/2a+2/3b=50, when b=30?

Does the point (1, sqrt 7) lie on circle shown.

Acar started driving from city a to city b, distance between which is 620 miles, at a rate of 60 mph. two hours later a truck left city b and started moving towards city a at a rate of 40 mph. what distance from city a is the point where the truck and the car will meet?