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butalik [34]
4 years ago
9

Which expression can be used to model the phrase “the sum of three and a number”? 3+x x-3

Mathematics
2 answers:
Ghella [55]4 years ago
8 0

Answer:

3+x

Step-by-step explanation:

“the sum of three and a number”

Frame an expression for the given statement

Expression contains variables and operators like add, subtract , multiply and divide

LEt the unknown number be x

Sum represents the addition of two numbers

Sum of three and a number means the addition of 3 and number x

So the expression become 3+ x

natima [27]4 years ago
6 0
A=3+b. That is a reasonable expression, because a= the sum of 3 and b, an unknown number.
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I have an answer and an explanation!

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Explanation:

<span>{Let's solve your equation step-by-step.}
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Step-by-step explanation:

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Answer:

The standard deviation of the age distribution is 6.2899 years.

Step-by-step explanation:

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Compute the standard deviation as follows:

SD=\sqrt{\frac{1}{n}\sum\limits^{n}_{i=1}{(x_{i}-\bar x)^{2}}}

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Serga [27]

Answer:

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You said this was an easy math question.

8 0
3 years ago
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