2 years ago

Which of the following expressions is correct?

1 answer:

8090 [49]2 years ago

4 0

Answer:

Wrong Question

Step-by-step explanation:

You should write of what context is this question. Else wise the question will be wrong.

This doesn't follow mathematical arithmetic rule at all.

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Kitty [74]

just subtracting by 2x on both sides

hope this helps

5 0

2 years ago

valina [46]

If $W$ is a random variable representing your winnings from playing the game, then it has support

$W=\begin{cases}43&\text{if you draw something with value at most 3}\\-11&\text{otherwise}\end{cases}$

There are 52 cards in the deck. Only the 1s, 2s, and 3s fulfill the first condition, so there are 12 ways in which you can win $43. So $W$ has PMF

$P(W=w)=\begin{cases}\frac{12}{52}=\frac3{13}&\text{for }w=43\\1-\frac{12}{52}=\frac{10}{13}&\text{for }w=-11\\0&\text{otherwise}\end{cases}$

You can expect to win

$E[W]=\displaystyle\sum_ww\,P(W=w)=\frac{43\cdot3}{13}-\frac{11\cdot10}{13}=\boxed{\frac{19}{13}}$

or about $1.46 per game.

3 0

2 years ago

alexgriva [62]

-10,2 is your answer when you simplify it

6 0

2 years ago

blsea [12.9K]

Answer:

w=4

Step-by-step explanation:

so assuming that that is a plus sign instead of an equal sign it would be 4

3 0

3 years ago

zaharov [31]

Maybe 7.4 pounds idk sorry if I’m wrong

7 0

2 years ago