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Masja [62]
3 years ago
5

There is a fraction that to 9/10. The numerator and the denominator is 57. What is the fraction?

Mathematics
1 answer:
xxTIMURxx [149]3 years ago
8 0
The fraction is 27/30. It is equivalent to 9/10 and 27 + 30 = 57.
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Answer:

a. (0,2)

Step-by-step explanation:


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2 years ago
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The ratio of enlisted men to officers in a division is 25 to 1.
9966 [12]
The answer is 40.

1000/25 will give you the new ratio

Simple way of thinking about it

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Cross multiply (25 by X officer and the 1 officer by the 1000)

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2 years ago
Part 2 to that question answer right pls
Marta_Voda [28]

Answer:

1. decreases

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Step-by-step explanation:

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A newsgroup is interested in constructing a 90% confidence interval for the proportion of all Americans who are in favor of a ne
Evgen [1.6K]

Answer:

a. With 90% confidence the proportion of all Americans who favor the new Green initiative is between 0.6290 and 0.6948.

b. If the sample size is changed, the confidence interval changes as the standard error depends on sample size.

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We have to calculate a 90% confidence interval for the proportion.

The sample proportion is p=0.6619.

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The standard error of the proportion is:

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The critical z-value for a 90% confidence interval is z=1.6449.

The margin of error (MOE) can be calculated as:

MOE=z\cdot \sigma_p=1.6449 \cdot 0.02=0.0329

Then, the lower and upper bounds of the confidence interval are:

LL=p-z \cdot \sigma_p = 0.6619-0.0329=0.6290\\\\UL=p+z \cdot \sigma_p = 0.6619+0.0329=0.6948

The 90% confidence interval for the population proportion is (0.6290, 0.6948).

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2 years ago
Explain text functions, count, countif and averageif functions in own words. Looking for some original content.
Lilit [14]

Answer:

count: Sum up a pre-set interval of values in excel cells.

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averageif: sum the values in cells and the divides the result by the total of cells considered in the function.

Step-by-step explanation:

count: Sum up a pre-set interval of values in excel cells.

countif: sum up a pre-set interval of values according to certain rules determined by the user.

averageif: sum the values in cells and the divides the result by the total of cells considered in the function.

3 0
3 years ago
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