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emmainna [20.7K]
2 years ago
9

Three coins are flipped.

Mathematics
1 answer:
Darina [25.2K]2 years ago
8 0

Step-by-step explanation:

1.

when 3 coins are flipped the following outcomes are possible

h = heads, t = tails

h h h

h h t

h t h

h t t

t h h

t h t

t t h

t t t

yes, there have to be 8 options, because we have 3 positions with 2 possible outcomes. that means

2×2×2 = 2³ = 8 possibilities.

2.

at least 2 tails means 2 or 3 t in the list item :

h t t

t h t

t t h

t t t

3.

so, 4 out of the 8 possible outcomes. the probability is then therefore

4/8 = 1/2 = 0.5

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2 years ago
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Answer:

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Step-by-step explanation:

We can set up a system of equations for this problem

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Now, we plug in A for the first equation, using substitution

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