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mr_godi [17]
2 years ago
13

1

Mathematics
2 answers:
adelina 88 [10]2 years ago
8 0

Answer:

The answer is A

Step-by-step explanation:

Katen [24]2 years ago
5 0

Answer:

What type of question is this??

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Three-sevenths of a number is 21. Find the number.
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Answer:

Step-by-step explanation:

The number is 49, First do 21 / 3 to find what 1/7 of the number is. We get 7, so we know 1/7 is 7 so if we do 7 x 7 we will have 7/7 or one whole and 7x7 is 49. Hope this helps

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C Infinitely Many Solutions

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Suppose that the hourly wages of fast food workers are normally distributed with an unknown mean and standard deviation. The wag
Nutka1998 [239]

Answer: 1.303639

Step-by-step explanation:

The t-score for a level of confidence (1-\alpha) is given by :_

t_{(df,\alpha/2)}, where df is the degree of freedom and \alpha is the significance level.

Given : Level of significance : 1-\alpha:0.80

Then , significance level : \alpha: 1-0.80=0.20

Sample size : n=40

Then , the degree of freedom for t-distribution: df=n-1=40-1=39

Using the normal t-distribution table, we have

t_{(df,\alpha/2)}=t_{39,0.10}=1.303639

Thus, the t-score should be used to find the 80% confidence interval for the population mean =1.303639

8 0
3 years ago
There were n votes cast in an election. Ms. Gordy received 32% of the votes. Which expression represents the number of votes Ms.
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Step-by-step explanation:

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