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4 years ago

8x+2>34 Y’all know how to do this?

Mathematics

1 answer:

AVprozaik [17]4 years ago

3 0

Answer:

x>4

Step-by-step explanation:

8x+2>34

8x+2-2>34-2

8x>32

8x/8>32/8

x>4

{x:x=4,5,6,7,8,9...}

Hope this helps ;)❤❤❤

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Step-by step explanation:

Given X represents the number on die.

The possible outcomes of X are 1, 2, 3, 4, 5, 6.

For a fair die, $P(X)=\frac{1}{6}$

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$M_{x}(t)=\frac{1}{6} e^{t}+\frac{1}{6} e^{2 t}+\frac{1}{6} e^{3 t}+\frac{1}{6} e^{4 t}+\frac{1}{6} e^{5 t}+\frac{1}{6} e^{6 t}$

$M_x(t)=\frac{1}{6}\left(e^{t}+e^{2 t}+e^{3 t}+e^{4 t}+e^{5 t}+e^{6 t}\right)$

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$M^{\prime}(t)=\frac{1}{6}\left(e^{t}+2 e^{2 t}+3 e^{3 t}+4 e^{4 t}+5 e^{5 t}+6 e^{6 t}\right)$

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$\Rightarrow E(X)=\frac{21}{6}$

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$M^{\prime \prime}(0)=E(X)=\frac{1}{6}(1+4+9+16+25+36)$

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(b) $\mathrm{E}(\mathrm{X})=\frac{21}{6} \text { and } E\left(X^{2}\right)=\frac{91}{6}$

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