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Genrish500 [490]
3 years ago
11

Tyler says he invented a number puzzle. He asks clare to pick a number, and asks her to do the following:

Mathematics
2 answers:
zimovet [89]3 years ago
8 0
Set up an equation to see how this makes sense.
Let X be your original number.

So...
2(3x-7)-22/6=-3
6x-14-22/6=-3
6x-36/6=-3
6x-36=-18
6x=18
X=3
juin [17]3 years ago
8 0

Answer:

E

Step-by-step explanation:

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A statistics practitioner determined that the mean and standard deviation of a data set were 120 and 30, is respectively. What c
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Answer:

a) 68% of the observations lie between 90 and 150.

b) 95% of the observations lie between 60 and 180.

c) 99.7% of the observations lie between 30 and 210.

Step-by-step explanation:

The Empirical Rule states that, for a normally distributed random variable:

68% of the measures are within 1 standard deviation of the mean.

95% of the measures are within 2 standard deviation of the mean.

99.7% of the measures are within 3 standard deviations of the mean.

In this problem, we have that:

Standard deviation = 120

Mean = 30

a. 90 and 150

This is within 1 standard deviation of the mean.

By the Empirical Rule, 68% of the observations lie between 90 and 150.

b. 60 and 180

This is within 2 standard deviations of the mean.

By the Empirical Rule, 95% of the observations lie between 60 and 180.

c. 30 and 210

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By the Empirical Rule, 99.7% of the observations lie between 30 and 210.

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A scale on a map shows that 2 inches equals 25 miles how many inches on the map represents 60 miles?? I NEED HELP ASAP
irakobra [83]

Answer:

60 miles is equal to 4.8 inches.

Step-by-step explanation:

To find the answer to this question, we need divide 60 by 25 to find out how much to multiply 2 by so its equal.

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2*2.4=4.8

60 miles is equal to 4.8 inches.

Hope this helps!

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3 years ago
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