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motikmotik
3 years ago
11

4 students from a class of 15 are going to be chosen to be on the dance committee. Find the number of different 4-person committ

ees that can be made.
Mathematics
2 answers:
Andreyy893 years ago
8 0

Answer:

1365

Step-by-step explanation:

formula for combination

n!/r!(n-r)!

Andrej [43]3 years ago
7 0
We know that
The formula for combinations is
C=n!/[(n-r)!*r!]
where
n is the total number of objects you choose from
r is the number that you choose to arrange

in this problem
n=15 students
r=4 students
C=15!/[(15-4)!*4!]-----> C=15!/[11!*4!]---> (15*14*13*12*11!)/(11!*4*3*2*1)
C=(15*14*13*12)/(24)----->C=1365

the answer is
1365
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Can someone please answer this question please answer it correctly please show work
netineya [11]

Answer:

Actual mean: 223 pages

Predicted mean / estimate: 225 pages

Explanation below

Step-by-step explanation:

Mean = total amount ÷ # of numbers

155 + 214 + 312 + 198  + 200 + 170 + 250 + 260 + 215 + 256

Add

2,230

# of numbers = 10

2,230 ÷ 10 = 223

The exact mean is 223

If I were to predict the mean, I would say that a good estimation would be around 225, because I see that the highest number in the data set is 312, and the lowest is 155. If 312 is rounded down to 300, and 155 is rounded down to 150, the number exactly in the middle of 300 and 150 is 225.

Actual mean: 223 pages

Predicted mean: 225 pages

Hope this helps :)

7 0
3 years ago
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Answer:

1/2

Step-by-step explanation:

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4 0
3 years ago
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earnstyle [38]

Answer:

A. SAS

Step-by-step explanation:

Since the marked angle is between the marked sides, and the corresponding sides are marked as congruent, the two triangles are congruent by SAS (side angle side).

7 0
2 years ago
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3 years ago
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Answer:

Please see attachment

Step-by-step explanation:

Please see attachment

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