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mestny [16]
3 years ago
14

2. A rectangular plot of land is 0.4 kilometer long and 0.07 kilometer wide. What is its

Mathematics
1 answer:
Colt1911 [192]3 years ago
7 0

An area of rectangle: a · b

a = 0.4 km

b = 0.07 km

a · b = 0.4 km · 0.07 km = 0.028 km²

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Name the sampling method used in each of the following situations:
elixir [45]

Answer:

a) Convenient

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c) Stratified

d) Systematic

e) Random

Step-by-step explanation:

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.

Situation a:

Asks all from a single group(sitting passengers), that is, convenint sample.

Situation b:

First she separates the students by row, then from each row, she chooses all students. So this is Cluster sampling.

Situation c:

The manager separates the stores by location, and then in each location, random customers are chosen. This is an example of Stratified sampling.

Situation d:

Marks for every fourth patron, that is, every 4th element. So Systematic sampling.

Situation e:

People chosen at random, so Random sampling.

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3 years ago
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Answer:

Her new balance = - 92.34

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First find out what the check did.

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In order to avoid heavy traffic, Antonio can drive home after working less than 7 hours (h < 7) or after working more than 9
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The Answer is B = 7 > h > 9...
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The answer is 30~~~~~~~~

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