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crimeas [40]
2 years ago
9

Three sevenths of a children's choir are boys. There are 12 boys in the choir.

Mathematics
2 answers:
erastova [34]2 years ago
3 0
This should basically explain things! Good luck!

GarryVolchara [31]2 years ago
3 0

The correct awnser is 28



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Simplify the following expression.<br> 2x+3x³-5x² + x +7x+1+7x5 -3x³-4
kicyunya [14]

Answer:

Step-by-step explanation:

5 0
1 year ago
Which of the following statements says that a number is between -3 and 3?
Shalnov [3]
So, if the <span>number is between -3 and 3, It couldn't be more than 3, so C isn't the answer. It also doesn't have to be equal to 3.

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4 0
3 years ago
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What is the method used when the objective is to determine the cause and effect relationship of a certain phenomenon under contr
jenyasd209 [6]

Answer: A

Explaination:
The cause and effect relationship of a certain phenomenon under controlled condition

5 0
1 year ago
The average weight of the entire batch of the boxes of cereal filled today was 20.5 ounces. A random sample of four boxes was se
zhenek [66]

Answer:

s= \sqrt{\frac{\sum_{i=1}^n (X_i -\bar X)^2}{n-1}}

And replacing we got:

s= 0.286

And then the estimator for the standard error is given by:

SE= \frac{0.286}{\sqrt{4}}= 0.143

Step-by-step explanation:

For this case we have the following dataset given:

20.05, 20.56, 20.72, and 20.43

We can assume that the distribution for the sample mean is given by:

\bar X \sim N(\mu, \frac{\sigma}{\sqrt{n}})

And the standard error for this case would be:

SE= \frac{\sigma}{\sqrt{n}}

And we can estimate the deviation with the sample deviation:

s= \sqrt{\frac{\sum_{i=1}^n (X_i -\bar X)^2}{n-1}}

And replacing we got:

s= 0.286

And then the estimator for the standard error is given by:

SE= \frac{0.286}{\sqrt{4}}= 0.143

4 0
3 years ago
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marshall27 [118]
The answers are f = 2 and p = -2
8 0
3 years ago
Read 2 more answers
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