Yprobability 10 0.10 20 0.25 30 0.05 40 0.30 50 0.20 60 0.10 the probability distribution of y, a discrete random variable, is given in the table. what is the expected value of y? a. 25.0 b. 26.5 c. 35.0 d. 35.5

Can someone me my sister? she is in third grade. 50 points and brainlist! ones that are not answered. plz and thx!

Which of the following is not a subset of {1,2,3}?

Suppose that the price p, in dollars, and the number of sales, x, of a certain item follow the equation 4 p plus 4 x plus 2 pxequals56. suppose also that p and x are both functions of time, measured in days. find the rate at which x is changing when xequals2, pequals6, and startfraction dp over dt endfraction equals1.5.