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Zepler [3.9K]
3 years ago
15

3+(-4) on a number line iready

Mathematics
1 answer:
natka813 [3]3 years ago
6 0

Answer:

it minus one or -1

Step-by-step explanation:

because 4 has more minus than 3 plus

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c or d

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Mary wants to fill in a cylinder vase. At the flower store they told her that the vase should be filled for the flowers to last
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Evaluate C_n.xP^xQn-x For the given n=7, x=2, p=1/2
r-ruslan [8.4K]

Answer:

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Step-by-step explanation:

Given information: n=7, x=2, p=1/2

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C(n,x)p^xq^{n-x}

It can be written as

^nC_xp^xq^{n-x}

Substitute n=7, x=2, p=1/2 and q=1/2 in the above formula.

^7C_2(\frac{1}{2})^2(\frac{1}{2})^{7-2}

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\frac{7!}{2!5!}(\frac{1}{2})^{2+5}

\frac{7\times 6\times 5!}{2\times 5!}(\frac{1}{2})^{2+5}

21(\frac{1}{2})^{7}

\frac{21}{128}

Therefore the value of given expression is \frac{21}{128}.

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