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3 years ago

11

Matthew randomly picks 3 coins from his pocket. What is the probability of Matthew picking a dime, a dime, and a nickel in that

order? PLEASEEEEE

1 answer:

exis [7]3 years ago

7 0

I would say 4 out of 20

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Can someone please help me get 2 brainliest?

Rasek [7]

Answer:

what?

Step-by-step explanation:

8 0

3 years ago

A population of monkeys' tail lengths is normally distributed with a mean of 25 cm with a standard deviation of 8 cm. I am prepa

Crank

Answer:

<em>The probability that the mean of my sample will be between 24 and 25 cm</em>

<em>P(24 ≤X⁻≤25) = 0.4772</em>

Step-by-step explanation:

<u><em>Step(i)</em></u>:-

<em>Given mean of the Population 'μ'= 25c.m</em>

<em>Given standard deviation of the Population 'σ' = 8c.m</em>

<em>Given sample size 'n' = 256</em>

<em>Let X₁ = 24</em>

<em></em> $Z_{1} = \frac{x_{1}-mean }{\frac{S.D}{\sqrt{n} } } = \frac{24-25}{\frac{8}{\sqrt{256} } } = -2$ <em></em>

<em>Let X₂ = 25</em>

<em></em> $Z_{2} = \frac{x_{2}-mean }{\frac{S.D}{\sqrt{n} } } = \frac{25-25}{\frac{8}{\sqrt{256} } } = 0$ <em></em>

<u><em>Step(ii)</em></u><em>:-</em>

<em>The probability that the mean of my sample will be between 24 and 25 cm</em>

<em>P(24 ≤X⁻≤25) = P(-2≤ Z ≤0)</em>

= P( Z≤0) - P(Z≤-2)

= 0.5 + A(0) - (0.5- A(-2))

= A(0) + A(2) ( ∵A(-2) =A(2)

= 0.000+ 0.4772

= 0.4772

<u><em>Final answer</em></u>:-

<em>The probability that the mean of my sample will be between 24 and 25 cm</em>

<em>P(24 ≤X⁻≤25) = 0.4772</em>

4 0

3 years ago

Consultar sobre las propiedades de la potenciacion y la radicacion y para cada uno dar 2 ejemplos

Nataly_w [17]

Answer:

Potencia de una potencia

La potencia de una potencia de base a es igual a la potencia de base a elevada a la multiplicación de ambos exponentes -

Potencia de base 10

En las potencias con base 10, el resultado será la unidad seguida de tantos ceros como indica la cifra del exponente

radiacion

En matemáticas, la radicación es el proceso de hallar raíces de orden n de un número a.1.

De modo que se verifica que

x n = a {\displaystyle x^{n}=a}

, donde n es llamado índice u orden, a es llamado radicando, y x es una raíz enésima.23

La raíz de orden dos de

a {\displaystyle a}

, se llama raíz cuadrada de

a {\displaystyle a}

y se escribe como

a {\displaystyle {\sqrt {a}}}

o también

a 2 . {\displaystyle {\sqrt[{2}]{a}}.}

La raíz de orden tres de

a {\displaystyle a}

, se llama raíz cúbica de

a {\displaystyle a}

y se escribe como

a 3 . {\displaystyle {\sqrt[{3}]{a}}.}

Las raíces de órdenes superiores se nombran usando números ordinales, por ejemplo raíz cuarta o raíz séptima.

La radicación es la operación inversa a la potenciación. s:

Step-by-step explanation:

5 0

3 years ago

In a survey of 2,800 people who owned a certain type of car, 840 said they would buy that type of car again. What percent of the

cluponka [151]

Answer:

30% of people surveyed were satisfied with the car.

Step-by-step explanation:

We are given:

Total participants in survey= 2800

People satisfied with car = 840

We need to find percent of the people surveyed were satisfied with the car.

The formula used is: $\frac{People \ satisfied \ with \ car}{Total \ participants \ in \ survey} \times 100$

$=\frac{840}{2800}\times 100\\=30\%$

So, 30% of people surveyed were satisfied with the car.

6 0

2 years ago

One reading at an Arctic research station showed that the temperature was -35° C. What is this temperature in degrees Fahrenheit

tangare [24]

Answer: $-31\ \°F$

Step-by-step explanation:

Degrees Celsius and Degrees Fahrenheit are defined as units of measurement of temperature.

In order to make the conversion from Degrees Celsius to Degrees Fahrenheit, you need to follow these steps:

<u>Step 1</u>: You must multiply the temperature in degrees Celsius by $\frac{9}{5}$ (or you can multiply it by 1.8).

<u>Step 2</u>: Then you must add 32 to the product obtained.

In this case, according to the information given in the exercise, you know that the reading at an Arctic research station showed that the temperature was $-35\°C$

Therefore, applying the steps indicated before, you get that that temperature in degrees Fahrenheit is:

$T_{(\°F)}=(-35)(\frac{9}{5})+32\\\\T_{(\°F)}=-31\ \°F$

3 0

3 years ago