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Dmitry_Shevchenko [17]
3 years ago
14

A random flip of a coin gives either a "head" or "tail", with equal probabilities. Consider an experiment where we repeatedly fl

ip a coin until we get a head. What is the probability that the first head occurs on the flip of the coin
Mathematics
2 answers:
Lynna [10]3 years ago
6 0

Answer:

50%

Step-by-step explanation:

A coin has two sides, so there are two outcomes.

The outcomes are of course, heads and tails.

The chance of landing on heads is 1/2. The chance of landing on tails is also 1/2.

Natali [406]3 years ago
4 0

Answer: Theoretically, 50 percent. But technically, if you flipped it a extremely large amount of times, the extremely slight weight difference would show.

Step-by-step explanation: 1/2 = two sides of the coins, only one can be landed on per flip, and assuming equal chances.

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3 years ago
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Word problem-in a movie script time traveler wanted to save his wife who died the same year. The couple was the dam age. However
drek231 [11]

Represent Age of Time Traveler =========> X

Solve:

x = 3(x - 20 )


Step 1: Simplify Both sides of equation:

x = 3(x - 20 )

x = (3) (x) + (3) ( - 20 ) (Distribute ):

x = 3x + - 60

x = 3x - 60


Step 2: Subtract 3x from both sides:

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Step 3: Divide both sides by -2:

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Answer: Our Time Traveler is 30 years old.




Hope that helps : )




5 0
3 years ago
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AlladinOne [14]

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5 0
2 years ago
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Please help! Thanks in advance.
alukav5142 [94]
In this problem, we need to plug in the given x values for f(x)=0 and find a and b.

When we plug in 1, we get: 2 \times {1}^{4} - 5 \times {1}^{3} - 14 \times {1}^{2} + a \times 1 + b = 0

Simplify:
2 - 5 - 14 + a + b = 0
- 17 + a + b = 0
a + b = 17

We got our first statement about the values of the variables. If we find one more we can find those 2 variables.

We have another given root: 4.

Plug it in:
2 \times {4}^{4} - 5 \times {4}^{3} - 14 \times {4}^{2} + a \times 4 + b = 0
512 - 320 - 224 + 4a + b = 0
- 32 + 4a + b = 0
4a + b = 32

Now we have our second one. We can combine them:
a + b = 17 \\ 4a + b = 32

I use elimination method which is easier here.

Multiply the top equation by -1: - a - b = - 17 \\ 4a + b = 32

Add them up:
3a = 15

Simplify:
a = 5

Now we have a, we can plug in one of those equations to find b:
5 + b = 17
b = 17 - 5
b = 12

So, the answers are a=5 and b=12 .
6 0
3 years ago
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