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maks197457 [2]
3 years ago
9

Determine whether the data set is a population or a sample. Explain your reasoning. The salary of each teacher in a school. Choo

se the correct answer below. A. ​Sample, because it is a collection of salaries for all teachers in the school comma but there are other schools. B. ​Population, because it is a subset of all schools in the city. C. ​Sample, because it is a collection of salaries for some teachers in the school. nothing D. ​Population, because it is a collection of salaries for all teachers in the school.
Mathematics
1 answer:
SVETLANKA909090 [29]3 years ago
5 0

Answer:

D. ​Population, because it is a collection of salaries for all teachers in the school.

Step-by-step explanation:

In research, population refers to a complete set of subjects that share a characteristic and that the researcher is interested in. On the other hand, a sample is a subset of a population and it's usually the one the researcher takes to make a study with.

In this example, we have "The salary of each teacher in a school" since we are taking ALL the teachers of this school, this would be a population. If we were working with the salary of only a portion of the teachers of said school, it would be a sample.

Thus, the right answer is  D. ​Population, because it is a collection of salaries for all teachers in the school.

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salantis [7]

Answer:

(3 + 4x)(9 - 12x + 16x²) = 0

(4m - 1)(16m² + 4m + 1) = 0

Step-by-step explanation:

Here we have to solve the sum of two cubes which is 27 + 64x^{3}

Now, the equation is 27 + 64x^{3} = 0

⇒ 3³ + (4x)³ = 0

⇒ (3 + 4x)[3² - 3(4x) + (4x)²] = 0

⇒ (3 + 4x)(9 - 12x + 16x²) = 0

So, (3 + 4x) = 0 or (9 - 12x + 16x²) = 0

Therefore, from the above two relation we can solve for x.

One root will be - \frac{3}{4} and the others we will get by applying Sridhar Acharya Formula, which will give a pair of conjugate imaginary roots of the equation.  

Again, we have to solve the difference of two cubes which is 64m^{3} - 1

Now, the equation is 64m^{3} - 1 = 0

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So, (4m - 1) = 0 or (16m² + 4m + 1) = 0

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One root will be \frac{1}{4} and the others we will get by applying Sridhar Acharya Formula, which will give a pair of conjugate imaginary roots of the equation.  (Answer)

8 0
3 years ago
Plz help me with this
lutik1710 [3]
This is the answer:)

5 0
3 years ago
PLS HELPPPP ITS PROB EASY BUT I HAVE SO MANY LATE WORK TO DO:)))
kumpel [21]

Answer:

It’s C

Step-by-step explanation:

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3 years ago
A reference sheet given with an exam indicated the following formula for the surface area of a cone.
scZoUnD [109]

Answer:

A.

Using the given formula, the calculated surface area would be in cubic units instead of square units.

Step-by-step explanation:

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3 years ago
John is paid 5% commission on the value of photocopiers he sells. Last week he sold $24,000 worth of copiers. He decided to inve
allsm [11]

Answer:

5040

Step-by-step explanation:

24000-5%=1200

1200+5%=1260

1260x4=5040

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3 years ago
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