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Artemon [7]
2 years ago
10

At the beginning of each school year, every grade level must elect a president, treasurer, and secretary. If the sophomore class

has 35 students, how many possible outcomes of the officer elections could there be?
Mathematics
1 answer:
Artist 52 [7]2 years ago
6 0

Answer:

39270 ways

Step-by-step explanation:

35 P 3   = 39270

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The highway mileages of 147 cars are in a file named CARS2.† These cars are 2003 models. Find the mean, standard deviation, and
grigory [225]

In statistics, mean is the average in a set of data collected. To calculate the mean, you have to add up all the numbers in the table and divide it by the number of data that exists. For example, if the data set is 2 4 1 5 2 8, the mean will be:

mean = \frac{(2+4+1+5+2+8)}{6}= 3.6

So, for this data set, the mean is 3.6.

The median is also a average number, however, the median is the middle value in the list. For example, with the data set above, the median is 3, because, as the set has an even number of data, the middle term would be the mean of the two middle number, in other words:

median = \frac{1+5}{2} = 3

The standard deviation (σ) is the spread of data distribution, which means it's how "far" a number is from the mean of the set. The formula is

σ = √∑ (x - μ)²/N, where ∑ is the total sum; μ is the mean; and N is the number of data points in the sample. So, to calculate the standard deviation, using the example:

1) Calculate the mean of the set: μ=3.6

2) Find the difference between each data point and the mean and then, the square of each one:

(2-3.6)² = 2.56;

(4-3.6)² = 0.16

(1-3.6)² = 6.76

(5-3.6)² = 1.96

(2-3.6)² = 2.56

(8-3.6)² = 19.36

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4) Divide by the number of data points: \frac{33.36}{6}=5.56

5) Take the square root: σ = 2.36

For the set of numbers above (2,4,1,5,2,8), the standard deviation is

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6 0
3 years ago
For every 2 apples in kail's orchard,there are 4 pears. In sam's orchard , there are 10 pears for every 5 apple. If the number o
igor_vitrenko [27]

Answer:

2/5

Step-by-step explanation:

cause u divied

5 0
3 years ago
A town park has two biking trails. Marsh Trail is 5 3/10 miles long. Woodland trail is 2 4/5 Miles long. How much longer is Mari
torisob [31]

Answer:

21/2

Step-by-step explanation:

The answer can be determined by substracting the lengrh of the woodland trail from the Marsh trail

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2\frac{5}{10}

converting the fraction to its simplest form gives 21/2

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