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aleksandr82 [10.1K]
3 years ago
12

20 POINTS! PLEASE HELP MY LAST QUESTION FOR MY EXAM

Mathematics
2 answers:
vodomira [7]3 years ago
7 0

Answer:

Population here, refers to the total set of observations that can be made.

A population denotes a larger group consisting of same type elements.

1. Using a yearbook to determine the most popular names for girls in the United States. This is not fair as a yearbook of a single school or two to three schools cannot determine the popular names in the whole US.(it is not mentioned how many yearbooks are to be selected, so I will mark this not fair.)

2. Asking the people exiting a vitamin store how often they exercise to determine the amount of time the average American exercises. This is not fair as, often how many people visit such stores daily. So, to determine  the amount of time the average American exercises cannot be derived by using this method.

3. Calling every registered member of the national Republican Party to determine the voter turnout for a city’s mayoral race. This is not fair as only a single party has been selected here.

4. Sending a mandatory and confidential e-mail survey to every tenth employee of a company to determine overall job satisfaction. This is fair as every 10th person is randomly selected. So, say if the company has 1000 employees, so every 10th will become a total of 100 employees. This represent the whole population.

5. Taking a poll in the main hallway between classes to determine the number of students who would be interested in a school trip to New York City. This is fair as you will randomly select any number of students passing through the hallway.

choli [55]3 years ago
5 0

The 1st 3rd and 5th because there is a wider variety of the number of people you can interview

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Which expression is equivalent to the given expression?
marishachu [46]

Answer:

The third option.

Step-by-step explanation:

(\frac{4xy^3}{x^2})^2\\\\=(\frac{4y^3}{x})^2\\\\=\frac{16y^6}{x^2}

Hence the 3rd option.

4 0
2 years ago
Point t is the MIDPOINT of point SV. find the location of V!
Arada [10]

Answer:

-1.5

Step-by-step explanation:

The distance between S and T is

4 - -7

4+7 = 11

Divide this in half to find the midpoint

11/2 = 5.5

Add this to point S to get the point itself

-7 + 5.5 = -1.5

3 0
4 years ago
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Romashka-Z-Leto [24]
I believe that it's A neither, because I don't think that it could be displayed on a coordinate graph when it has an exponent in it. So I think it's A. Let me know if I'm correct. ;-)
3 0
3 years ago
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Help me answer these questions please 15, 19 and 20 please​
SpyIntel [72]

Answer:

15) K'(t) = 5[5^(t)•In 5] - 2[3^(t)•In 3]

19) P'(w) = 2e^(w) - (1/5)[2^(w)•In 2]

20) Q'(w) = -6w^(-3) - (2/5)w^(-7/5) - ¼w^(-¾)

Step-by-step explanation:

We are to find the derivative of the questions pointed out.

15) K(t) = 5(5^(t)) - 2(3^(t))

Using implicit differentiation, we have;

K'(t) = 5[5^(t)•In 5] - 2[3^(t)•In 3]

19) P(w) = 2e^(w) - (2^(w))/5

P'(w) = 2e^(w) - (1/5)[2^(w)•In 2]

20) Q(W) = 3w^(-2) + w^(-2/5) - w^(¼)

Q'(w) = -6w^(-2 - 1) + (-2/5)w^(-2/5 - 1) - ¼w^(¼ - 1)

Q'(w) = -6w^(-3) - (2/5)w^(-7/5) - ¼w^(-¾)

7 0
3 years ago
Can you guys help me when you have time
hodyreva [135]

Answer:

c

Step-by-step explanation:

the reasoning for this is because it is technically 2 squared times 3 but 2x2x3 is the same thing

4 0
3 years ago
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