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hoa [83]
3 years ago
11

What does it mean when the ratio of person 1’s income to person 2’s incomes is 1 to 3 or 3 to 1? Explain.

Mathematics
1 answer:
viktelen [127]3 years ago
6 0

Answer with explanation:

3:1 means that person 1's income is three times person 2's income.

E.g.: if person 1 gets 150 per hour, person 2 gets 30 per hour.

1:3 means that person 1's income is one third of person 2's income.

E.g.: if person 1 gets 40 per hour, person 2 gets 120 per hour.

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Each score in a set of data is multiplied by 3, and then 4 is subtracted from the result. If the original mean is 10 and the ori
olganol [36]

The new mean and standard deviation is 26 and 15, when each score in data set is multiplied by 5 and then 7 is added.

According to the question,

Original mean is 10 and original standard deviation is 5 . In order to find to new mean and standard deviation when each score in data set is multiplied by 5 and then 7 is added.

First "change of scale" when every score in a data set is multiplied by a constant, its mean and standard deviation is multiplied by a same constant.

Mean: 10*3 = 30

Standard deviation: 5*3 = 15

Secondly "change of origin" when every score in a data set by a constant, its mean get  added or subtracted by the same constant and standard deviation remains constant.

Applying change of origin in the above mean and standard deviation  

Mean: 30 - 4 = 26

Standard deviation: Remains same = 15

Hence, the new mean and standard deviation is 26 and 15, when each score in data set is multiplied by 5 and then 7 is added.

Learn more about Mean and standard deviation here

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5 0
2 years ago
HELP ME PLEASE FAST!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! DUE IN 4 MIN!!!!!!!!!!!!!!!!!!!!!!!!!!
goldfiish [28.3K]

Answer: 66

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3 0
2 years ago
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The cone of the volcano has a height of 405 meters and a diameter of 438 meters. find the volume of the cone. round your answer
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The answer should be 81363900
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What is the slope of the line?
Strike441 [17]
The slope of the line is 1
7 0
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Which of the scatterplots to the right show ​a) no​ association? ​b) a negative​ association? ​c) a linear​ association? ​d) a w
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Answer:

A scatter plot to the right shows  a very strong​ association.

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Because  a scatter plot to the right shows that both variables are positive and they both increase, so it shows a strong association between those variables.

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3 years ago
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