The heartbeat per minute is 137 i used calculator
Answer:
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<span>It costs $7.00 to play a straightforward game in which a dealer gives you one card from a deck of 52 cards. </span><span>
</span><span>
If the card is a heart, spade, or diamond, you lose. </span><span>
</span><span>
If the card is a club other than the queen of clubs, you win $11.50. </span><span>
</span><span>
If the card is the queen of clubs, you win $50.00. </span><span>
</span><span>
The random variable x represents your net gain from playing this game once, or your winnings minus the cost to play. What is the mean of x, rounded to the nearest penny?</span><span>
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Random "winnings"::.....-7.......4.50......43</span><span>
</span><span>
Probabilities::........ 39/52....12/52....1/52 </span><span>
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</span><span>
u(x) = [39*-7 + 12*4.5 + 43]/52 = -$3.38
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The negatives cancel out so...
5 5/8 /-4/12
45/8 / -4/12
45/8 times -12/4
-540/32
now simplify
-270/16
-135/8
Answer: -135/8
Answer in mixed number: -16 7/8
X≤8 I used photo math and it gave that answer. <span />
