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3 years ago

12,13,15,16,19,19,19,20,21,25 find the mean

Mathematics

2 answers:

lesya [120]3 years ago

5 0

Answer:

17.9

Step-by-step explanation:

Add all of the numbers together.

You get 179

Divide by the amount of numbers, 10

you get 17.9

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Please give me brainliest!

Daniel [21]3 years ago

3 0

Answer:

17.9

Step-by-step explanation:

We have given a set of values.

12,13,15,16,19,19,19,20,21,25

We have to find mean of above values.

Mean is equal to the ratio of sum of all values to total number of values.

Mean = sum of values / number of values

Sum of values = 12+13+15+16+19+19+19+20+21+25

Sum of values = 179

Total number of values = 10

Hence,

Mean = 179 / 10

Mean = 17.9 which is the answer.

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3 years ago

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Step-by-step explanation:

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3 years ago

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At a high school, students can choose between three art electives, four history electives, and five computer electives. Each stu

V125BC [204]

Answer:

$\frac{^3C_1\times ^4C_1}{^{12}C_2}$

Step-by-step explanation:

Given,

Art electives = 3,

History electives = 4,

Computer electives = 5,

Total number of electives = 3 + 4 + 5 = 12,

Since, if a student chooses an art elective and a history elective,

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Also, the total combination of choosing any 2 subjects out of 12 subjects = $^{12}C_2$

Hence, the probability that a student chooses an art elective and a history elective = $\frac{\text{Total combination of choosing an art elective and a history}}{\text{ Total combination of choosing any 2 subjects}}$

$=\frac{^3C_1\times ^4C_1}{^{12}C_2}$

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3 years ago

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