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Eddi Din [679]
3 years ago
8

Definicion del concepto de numero

Mathematics
2 answers:
NNADVOKAT [17]3 years ago
8 0

Answer:

1.

Mathematical concept that expresses an amount in relation to the computer unit; results from counting the elements that make up a set.

"Cardinal number"

2.

A graphic sign or set of graphic signs that expresses or represents that amount.

Step-by-step explanation:

Gre4nikov [31]3 years ago
4 0

Answer:

En esta investigación, los conceptos numéricos cubren las habilidades de contar y comparar. Ambas habilidades son matemáticas básicas que los niños deben dominar antes de que puedan seguir aprendiendo matemáticas avanzadas. Las operaciones numéricas incluyen las habilidades de suma y resta.

Espero que esto ayude. Todavía estoy trabajando en mi español, así que lo siento si escribí algo mal.

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Number of passengers who arrive at the platform in an Amtrack train station for the 2 pm train on a Saturday is a random variabl
Svetradugi [14.3K]

Answer:

P(80

And we can find this probability with this difference:

P(-4

And in order to find these probabilities we can use tables for the normal standard distribution, excel or a calculator.  

P(-4

Step-by-step explanation:

Previous concepts

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

The Z-score is "a numerical measurement used in statistics of a value's relationship to the mean (average) of a group of values, measured in terms of standard deviations from the mean".  

Solution to the problem

Let X the random variable that represent the number of passengers who arrive at the platform of a population, and for this case we know the following info

Where \mu=180 and \sigma=25

We are interested on this probability

P(80

For this case we can assume that the random variable is normally distributed.

And the best way to solve this problem is using the normal standard distribution and the z score given by:

z=\frac{x-\mu}{\sigma}

If we apply this formula to our probability we got this:

P(80

And we can find this probability with this difference:

P(-4

And in order to find these probabilities we can use tables for the normal standard distribution, excel or a calculator.  

P(-4

5 0
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GenaCL600 [577]

Answer:

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Step-by-step explanation:

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ASAP!! Please help me. I will not accept nonsense answers, but will mark as BRAINLIEST if you answer is correctly with solutions
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x-2 is a factor so x = 2 is a root of f(x)

This is because f(x) = (x-2)*g(x) for some polynomial g(x). We don't have to worry about what g(x) is equal to as it doesn't affect the status of the root we're after.

So,

f(x) = 0

(x-2)*g(x) = 0

x-2 = 0 or g(x) = 0

x = 2 or g(x) = 0

This shows how the factor x-2 leads to the root x = 2

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Answer: Choice D

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Answer:

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Step-by-step explanation:

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Since the left figure is a square with side lengths 10, we know that the height of the triangle is also 10 metres. The right figure is a rectangle with length 4. Since the total base length of the entire figure is 18 and the base of the square is 10, then the width of the rectangle is 18 - 10 = 8 metres.

This width is also the base of the triangle, so b = 8.

Now plug these values into the equation:

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A = (1/2) * 8 * 10 = (1/2) * 80 = 40

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step by step explanation:

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