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kenny6666 [7]
3 years ago
14

Item 1 Evaluate 2xy when x=−14 and y=3 . explain your answer

Mathematics
2 answers:
meriva3 years ago
8 0

2xy

2(-14)(3)

-28*3

-84

juin [17]3 years ago
6 0

Answer:

-84

Step-by-step explanation:

We have been given an expression 2xy. We are asked to evaluate our given expression, when x=-14 and y=3.

Upon substituting x=-14 and y=3 in our given expression, we will get:

2(-14)(3)

6(-14)

-84

Therefore, the value of our expression at given values is -84.

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Answer:

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

Step-by-step explanation:

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

q=1-p=1-\frac{1}{2}=\frac{1}{2}

The given expression is

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}

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

\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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3 years ago
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Answer:

47,643

Step-by-step explanation:

This question is basically asking you to add up all of these numbers together and present the end result.

1) 40,000 + 7,000 = 47,000

2) 600 + 40 + 3 = 643

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Step-by-step explanation:

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