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Ad libitum [116K]
3 years ago
6

A standard six-sided die is rolled 6 times. You are told that among the rolls, there was one 1, two 2's, and three 3's. How many

possible sequences of rolls could there have been? (For example, 3,2,3,1,3,2 is one possible sequence.)
I tried this and I still don't get it. PLEASE HELP
Mathematics
2 answers:
S_A_V [24]3 years ago
8 0

Answer:

Step-by-step explanation:

Exactly two numbers appear:

There are  

(

6

2

)

(62)

ways for two of the six numbers to appear. On each of the six rolls of the die, there are two possible outcomes, giving  

(

6

2

)⋅

2

6

(62)⋅26

possible outcomes in which two of the six numbers appear. However, of these  

2

6

26

sequences, there are two in which the same number is rolled six times. Thus, the probability of exactly two numbers appearing in six rolls of the die is  

(

6

2

)⋅(

2

6

−2)

6

6

MArishka [77]3 years ago
6 0

Answer:

34

Step-by-step explanation:

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Chara sold 52 boxes of candy for her marching band fundraiser. The large box costs $3.50 each and the small box costs $1.75 each
Ahat [919]

Answer:

The number of boxes of candy sold are:

40 small boxes and

12 large boxes of candy.

Step-by-step explanation:

Let the number of small boxes sold = x

Let the number of large boxes sold = y

we are given the following information:

x + y = 52 - - - - - -(1)   (Chara sold 52 boxes of candy)

3.5(y) + 1.75(x) = 112 - - - - - - (2)   (Chara sold $112 worth of candy)

From the two equations above, x and y can be solved as follows:

x + y = 52   - - - - - -(1)

x = 52 - y    - - - - - - (3)

putting the value if x in equation (3) to replace x in equation (2);

3.5(y) + 1.75(x) = 112 - - - - - - (2)

3.5(y) + 1.75(52 - y) = 112

3.5y + 91 - 1.75y = 112

(3.5y - 1.75y) + 91 = 112

1.75y = 112 - 91 = 21

y = 21 ÷ 1.75 = 12

y = 12

Now, let us put the value of y into equation (3)

x = 52 - y    - - - - - - (3)

x = 52 - 12 = 40

Therefore,

40 small boxes and 12 large boxes of candy were sold.

7 0
4 years ago
Expand 4(-2y+ 3).<br> 2y+7<br> 0:-8 y + 12<br> 2 y + 12<br> -8 y+ 3
stepan [7]
It is -8y+12
You have to multiply 4 by -2 which equals -8
Then you do 4x3 which equals 12
8 0
3 years ago
The width of a rectangle is 2 meters less than its length, and the perimeter is 32 meters. Find the length and width of the rect
cupoosta [38]
The perimeter is equal to 2(width) + 2(length). let's call the width w and the length L.

so 32 = 2w + 2L
the width is given as 2 meters less than the length, so w = L - 2

32 = 2(L - 2) + 2L
32 = 2L - 4 + 2L
32 = 4L - 4
36 = 4L
9 = L

so our length is 9 meters.

w = L - 2
w = 9 - 2
w = 7

so our width is 7 meters.
3 0
4 years ago
I need help with this. <br><br> Y=6x -7
Pavlova-9 [17]
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3 0
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The staff at the Arcola Country Club prepares tables for a wedding reception. They are able to prepare 6 tables in 45 minutes. H
TiliK225 [7]
24

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