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3 years ago

What are the odds against getting three tails when you flip three coins?

Mathematics

1 answer:

tino4ka555 [31]3 years ago

5 0

Answer:

1:7

Step-by-step explanation:

The number of possible outcomes is 2*2*2 = 8

The number of ways of getting 3 tails is 1

The odds against - the ratio of the number of ways that an outcome cannot occur compared to in how many ways it can occur.

ways it can occur -1

ways it cannot occur - 8-1 = 7

1:7

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Luba_88 [7]

Answer:

We conclude that:

$3\cdot \:2\begin{pmatrix}-2&3&0\\ -4&2&6\\ 6&-5&6\end{pmatrix}=\begin{pmatrix}-12&18&0\\ -24&12&36\\ 36&-30&36\end{pmatrix}$

Hence, option B is correct.

Step-by-step explanation:

Given the expression

$3\times 2\begin{pmatrix}-2&3&0\\ \:-4&2&6\\ \:6&-5&6\end{pmatrix}$

solving

$3\times 2\begin{pmatrix}-2&3&0\\ \:-4&2&6\\ \:6&-5&6\end{pmatrix}$

Scalar Multiplication: Multiply each of the matrix elements by a scalar

$=\begin{pmatrix}3\cdot \:2\left(-2\right)&3\cdot \:2\cdot \:3&3\cdot \:2\cdot \:0\\ 3\cdot \:2\left(-4\right)&3\cdot \:2\cdot \:2&3\cdot \:2\cdot \:6\\ 3\cdot \:2\cdot \:6&3\cdot \:2\left(-5\right)&3\cdot \:2\cdot \:6\end{pmatrix}$

Simplify each element

$=\begin{pmatrix}-12&18&0\\ -24&12&36\\ 36&-30&36\end{pmatrix}$

Therefore, we conclude that:

$3\cdot \:2\begin{pmatrix}-2&3&0\\ -4&2&6\\ 6&-5&6\end{pmatrix}=\begin{pmatrix}-12&18&0\\ -24&12&36\\ 36&-30&36\end{pmatrix}$

Hence, option B is correct.

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