Step-by-step explanation:
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The expected value of the game is the mean value of the game
The expected value of the game is $1
<h3>How to determine the expected value?</h3>
There are 13 spades in a deck of card of 52
So, the probability of selecting a spade is:
P(Spade) = 13/52
Simplify
P(Spade) = 1/4
Winning = $7
The probability of not selecting a spade is:
P(Not spade) = 1 - 1/4
Simplify
P(Not spade) = 3/4
Lose = $1
The expected value of the game is:

This gives

Simplify

Evaluate

Hence, the expected value of the game is $1
Read more about expected values at:
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Answer:
$ 59.5
Step-by-step explanation:
Calculation for how much is the store's profit
First step is to calculate the store's cost
Store's cost= 170/100 * $85
Store's cost =$144.5
Now let calculate the store's profit
Store'sProfit=$144.5-$85
Store's Profit=$ 59.5
Therefore the store's profit will be $59.5
Given that,
Alonzo is $120 in debt. He makes $15 per hour. He wants to have at least $75 left over after he has paid off his debt.
To find,
The inequality and the solution.
Solution,
Let he make $x per hour. Here, $120 is fixed. $15 is added per hour.
ATQ,

For atleast, we use
.
Subtract 120 from both sides.

So, the required answer is greater than -3.
Answer:
M= 5/4
B= -12
Step-by-step explanation: