Looks like the PMF is supposed to be

which is kinda weird, but it's not entirely clear what you meant...
Anyway, assuming the PMF above, for this to be a valid PMF, we need the probabilities of all events to sum to 1:

Next,





If

, then

, where we take the positive root because we know

can only take on positive values, namely 1, 2, and 5. Correspondingly, we know that

can take on the values

,

, and

. At these values of

, we would have the same probability as we did for the respective value of

. That is,

Part (5) is incomplete, so I'll stop here.
So your equation is E=10h.
We know E is equal to 1 so let's plug that is.
1=10h
Now we just solve it.
1=10h Divide each side by 10
.1=h
Boom!
She has to work .1 hours or 1/10 of an hour to earn 1 dollar.
Hope I helped!
32, 7
0, - 1
20, 4
You just plug in the numbers and solve
Answer:
a. 1/10 b. did not understand question
Step-by-step explanation:
It is as simple as two fifths of one fourth. (2/5) * (1/4)= 1 tenth.