Solve 1/3(3.2×1.4)2.8 Simplify your answer

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

8 0

2 years ago

An animals heart beats 80 beats per minute how many minutes does it take to beat a million times?

Klio2033 [76]

The key calculation in this problem is figuring out how many times 80 goes into 1,000,000. I'll build up in steps here.

80 x 5 = 400. This gives us a building block on our way to 1,000,000. From here, we can go further and say that 400 x 5 = 2,000; that 2,000 x 5 = 10,000; and finally that 10,000 x 100 = 1,000,000. Altogether, starting from 80, that's

80 x 5 x 5 x 5 x 100 = 80 x 25 x 500 = 80 x 12,500

So, since 80 goes into one million 12,500 times, it takes 12,500 minutes for the animal's heart to beat that 1,000,000 times.

4 0

2 years ago

Apply the distributive property t create an equivalent expression

earnstyle [38]

Answer:The answer is 24m-28

Step-by-step explanation:

Hope this helps

7 0

3 years ago

Solve 1/3(3.2×1.4)2.8Simplify your answer​

Solve 1/3(3.2×1.4)2.8Simplify your answer