10 people enter an elevator on the 1st floor of a 20 floor building. Suppose each person independently randomly picks a floor to get off on (from floors 2 through 20). Let X be the number of stops that the elevator makes (in other words, the number of distinct floors which are chosen). Find IE [X]. Find Var [X].

idk

step-by-step explanation:

i don't know

x > 1.3

step by step:

8.5−0.9x> 9.8−1.9x

step 1: simplify both sides of the inequality.

−0.9x+8.5> −1.9x+9.8

step 2: add 1.9x to both sides.

−0.9x+8.5+1.9x> −1.9x+9.8+1.9x

1x+8.5> 9.8

step 3: subtract 8.5 from both sides.

1x+8.5−8.5> 9.8−8.5

1x> 1.3

step 4: divide both sides by 1.

1x/1 > 1.3/1

y=1/4x-4

step-by-step explanation: