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Lubov Fominskaja [6]
3 years ago
11

Compound events help please!!!’

Mathematics
1 answer:
anastassius [24]3 years ago
7 0

We need a 3 or 6 on the first roll => (3,1)....(3,6) or (6,1) ... (6,6) => 12 of these.


Consider all the combinations that add up to 8:

(2, 6), (3, 5), (4, 4), (5, 3), (6, 2).

However, (2, 6), (3, 5), and (6,2) were already in the previous event. So we do not need to double count. => 2 of these.


The total space is 6*6 = 36.

Therefore, (14+2)/36 = 16/36 = 4/9.

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Consider the following pair of equations:
vovikov84 [41]

Answer:

(-2,2)

Step-by-step explanation:

To solve the system, set the equations equal and solve for x.

x + 4 = -2x - 2

3x + 4 = -2

3x = -6

x = -2

Substitute x = -2 into one of the equations.

y = -2 + 4

y = 2

The solution is (-2,2).

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4 1/6 + 5 2/3<br><br> Enter your answer as a mixed number in simplest form
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Answer:9 5/6

Step-by-step explanation:

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HELPPPPPPPPPP Add &amp; subtract matrices ..... <br><br> PLZ GIVE THE ANSWER .. THANKSSSSS .
ale4655 [162]

Answer:

\left[\begin{array}{cc}0&-1\\-1&0\\-1&-1\end{array}\right]

Step-by-step explanation:

In this question we have to subtract the corresponding entries of column of matrix 1 and the matrix 2 corresponding entries

=\left[\begin{array}{cc}-1&0\\1&-2\\1&3\end{array}\right]-\left[\begin{array}{cc}-1&1\\2&-2\\2&4\end{array}\right] \\=\left[\begin{array}{cc}-1-(-1)&0-1\\1-2&-2-(-2)\\1-2&3-4\end{array}\right]\\=\left[\begin{array}{cc}-1+1&-1\\-1&-2+2\\-1&-1\end{array}\right]\\=\left[\begin{array}{cc}0&-1\\-1&0\\-1&-1\end{array}\right]

8 0
3 years ago
Use the graph and the translation (x,y)
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There’s no picture..
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3 years ago
Para ingresar a la Universidad del Chocó se aplica una prueba de razonamiento que consta de 30 preguntas. Por cada respuesta cor
s2008m [1.1K]

Complete question:

Para ingresar a la Universidad del Chocó se aplica una prueba de razonamiento que consta de 30 preguntas. Por cada respuesta correcta se asignan 5 puntos y por cada incorrecta (o no contestada) se restan 2 puntos. Si un participante obtuvo un puntaje de 94 puntos, ¿cuantas preguntas respondió bien?

Responder:

número de respuestas correctas = 22

Explicación paso a paso:

Dado lo siguiente:

Número total de preguntas = 30

Deje respuestas correctas = y; Respuestas incorrectas = n

Marca otorgada por y = 5

Marca deducida por n = 2

Si el total de preguntas = 30; luego

y + n = 30 - - - - (1)

Puntuación total obtenida = 94; luego

5y - 2n = 94 - - - (2)

De 1),

y + n = 30

y = 30 - n

Sustituya y = 30 - n en equ (2)

5 (30 - n) - 2n = 94

150 - 5n - 2n = 94

150 - 7n = 94

-7n = 94-150

-7n = - 56

n = 56/7

n = 8

Sustituir n = 8 en (1)

y + n = 30

y + 8 = 30

y = 30 - 8

y = 22

y = número de respuestas correctas = 22

n = número de respuestas incorrectas = 8

3 0
4 years ago
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