Of nine executives in a business firm, four are married, three have never married, and two are divorced. three of the executives are to be selected for promotion. let y1 denote the number of married executives and y2 denote the number of never-married executives among the three selected for promotion. assuming that the three are randomly selected from the nine available, find the joint probability function of y1 and y2.

-362

step-by-step explanation:

(12)(4)+2(12)-34(12)+2(12)-3

  \/         \/         \/         \/

  48 +   24 -   408 + 24 - 3

      \   /               \   /

          72     -     432 - 3 = -363

let x be the money she spent so that she can earn the free t-shirt.

since, she already spent $112.49

⇒

also, as per the statement: jennifer must spend $250 or more in order to qualify for a free t-shirt at the store.

then,

we have an inequality i.,e

subtract 112.49 from both sides we get;

therefore, $137. 51 more money does jennifer need to spend so that she can earn the free t-shirt

step-by-step explanation:

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