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3 years ago

Which Operation should be used to solve x + 3 = 7

Mathematics

1 answer:

Olenka [21]3 years ago

7 0

Answer:

Standard Form

Step-by-step explanation:

Equation:

x + 3 = 7

Move the constant:

x = 7 + 3

Subtract:

x = 7

- 3

Answer:

x = 4

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Answer:

Step-by-step explanation: How do you find the 3rd angle of a triangle?

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Step-by-step explanation:

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Answer:
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3 years ago

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Answer:

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Step-by-step explanation:

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In order to determine an interval for the mean of a population with unknown standard deviation, a sample of 24 items is selected

nikitadnepr [17]

If the sample size of population is 24 then the number of degrees of freedom for reading the t value is 23 which is option c.

Given sample size of 24,mean 23.

We have to determine the number of degrees of freedom which will be used to find the critical values of t.

Degree of freedom is the number of values in the final calculation of a statistic that are free to vary means that can change their values in the formula of calculating t.

t=(X-μ)/s/ $\sqrt{n}$

where X is sample mean ,

μ is hypothsised population mean

s is sample standard deviation

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Degree of freedom=n-1

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Hence the number of degrees of freedom for reading the t value is 23.

Learn more about degree of freedom at brainly.com/question/17305237

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2 years ago

Which Operation should be used to solve x + 3 = 7​

Which Operation should be used to solve x + 3 = 7