How to solve complex number problem is x square + 2x +65=0

1 answer:

7 0

Ill teach you how to do some of these things so you won't be having to use this site

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dalvyx [7]

Answer:

a) per year

Step-by-step explanation:

Hope this helped! Have a nice day! Plz mark as brainliest!!!

-XxDeathshotxX

4 0

3 years ago

tatiyna

Answer:

b, c, e.

Step-by-step explanation:

pls brainlyest

5 0

3 years ago

valentina_108 [34]

Step-by-step explanation:

To find the E(X) expected value, you come up with the different probabilities for each outcome
your set of outcomes after 3 tosses would be = {HHH, HHT, HTH, THH, HTT, THT, TTH, TTT} where H is heads and T is tails
Each element has a probability of 1/8 so let x represent number of tails
$Probability(x)=P(x)\\P(0)=\frac{1}{8} \\P(1)=\frac{3}{8} \\P(2)=\frac{3}{8} \\P(3)=\frac{1}{8}$
The E(x)=Summation (x times P(x))
$E(X)=(0)(0.125)+(1)(0.375)+(2)(0.375)+(3)(0.125)=1.5$
Now which probability is 1.5 tails? None, so it is either 2 tails or 1 tails
So you can expect to lose money in 1 game
But as you play more games the probability of getting 3 tails becomes more and more likely, so you can expect to win in a 100 games