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alexandr402 [8]
3 years ago
9

PLEASE PLEASE PLEASE HELP!!!!! And show your work!!!!! *Grade 9 work*

Mathematics
1 answer:
11Alexandr11 [23.1K]3 years ago
5 0

Answer:

180

Step-by-step explanation:

5(2)^2 (3)^3

5(4) (27)

4(27) = 108

5(108) = 540*

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Which of the following is an advantage of using systematic random sampling?
bekas [8.4K]

This is a question that asks about the advantages of a systematic random sampling. Thus, we first take a look at the types of sampling, and then we see the advantage of systematic random sampling.

Samples may be classified as:

Convenient: Sample drawn from a conveniently available pool.

Random: Basically, put all the options into a hat and drawn some of them.

Systematic: Every kth element is taken. For example, you want to survey something on the street, you interview every 5th person, for example.

Cluster: Divides population into groups, called clusters, and each element in the cluster is surveyed.

Stratified: Also divides the population into groups. However, then only some elements of the group are surveyed.

Systematic:

One of the bigger advantages is that the systematic sampling eliminate clusters, which means that the last option is wrong.

Inadvertently missing patterns is a problem in systematic sampling, and not an advantage, thus the third option is also wrong.

It also does not reduce sampling variability, thus the first option is wrong.

From this, it can be concluded that the correct option is:

Systematic random sampling does not require a finite population size.

For another example of systematic random sampling, you can check brainly.com/question/21100042

8 0
2 years ago
Help i'll make you the brainliest
9966 [12]

Answer:

D) b = \frac{S-2ac}{2a + 2c}

Step-by-step explanation:

First, move all the terms that do not include b to the left side with S:

S = 2ab + 2bc + 2ac

S - 2ac = 2ab + 2bc

Now, factor out 2b from the right side:

S - 2ac = 2b(a + c)

Divide both sides by 2(a + c):

b = \frac{S-2ac}{2(a + c)}

Finally, multiply out the denominator:

b = \frac{S-2ac}{2a + 2c}

7 0
3 years ago
In a classroom of students 3 out of 5 students are boys. If the total amount of students is 35 how many students are boys. Pleas
Bumek [7]

Answer:

there is 21 boys

Step-by-step explanation:

hope that helps

6 0
2 years ago
Please help #10 thank you mathematics
Savatey [412]
5 | 8 |12
40|35 |103
29|68 |148
65|172|324
5 0
3 years ago
Please help me and answer correctly!
LenKa [72]
A^-b = 1/a^b
a^b / a^c = a^b-c
a^c / b^c =(a/b)^c

3 0
3 years ago
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