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kakasveta [241]
3 years ago
10

Because of the commutative property of multiplication, it is true that

Mathematics
1 answer:
Likurg_2 [28]3 years ago
4 0

Answer:

1.  3/4 + 3/4 + 3/4 +3/4

2. 0.75 * 4

Step-by-step explanation:

1. add 3/4 four times

3/4 + 3/4 + 3/4 +3/4

2. You can turn 3/4 into a decimal.  3/4 =0.75

0.75 * 4

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It’s geometry, help plz
m_a_m_a [10]

Answer:

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Step-by-step explanatioN:

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5 0
2 years ago
Evaluate 12x-(4y+7z) for x=9 y= 4 and z = 2
Brums [2.3K]

The answer to "12x-(4y+7z) for x=9 y= 4 and z = 2" is 78.

6 0
3 years ago
A researcher for an airline interviews all of the passengers on five randomly selected flights.
antoniya [11.8K]

Answer

Cluster sampling. See explanation below.

Step-by-step explanation:

For this case they not use random sampling since we are selecting people from flights. Because we select just 5 random flights.

Is not stratified sampling since we don't have strata clearly defined on this case, and other important thing is that in order to apply this method we need homogeneous strata groups and that's not satisfied on this case.

Is not convenience sampling because they NOT use a non probability method in order to select the people from the flights.

So then the only possible method is cluster sampling since we have clusters clearly defined (Passengers from the airlines), and we satisfy the condition of homogeneous characteristics on the clusters and an equal chance of being a part of the sample, since we are selecting RANDOMLY, the 5 flights to take the information.

6 0
3 years ago
A survey of 100 people found that 35 people exercise in the morning, 45 people exercise in the afternoon, and 20 people exercise
Sophie [7]
Jim is correct because the ratios need to compare with the total amount of people surveyed. 55, 80, and 65 are numbers that don't fit in and don't tell the overall ratio. You can tell this by writing it as a fraction. 
Ex: 35:100 = 35/100. This literally means 35 out of 100 people exercise in the morning. 

Hope this helps! If you have any questions, just ask!
4 0
3 years ago
Read 2 more answers
A figure is composed of two half-circles.
posledela

Answer:

The answer is C, 220 units.

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3 years ago
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