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2 years ago

10

Write a two-column proof for the following information. Upload your proof below.

1 answer:

Evgesh-ka [11]2 years ago

4 0

Statements Reasons

1.) M is the midpoint of CD; CM = 5x – 2; MD = 3x + 2 1.) Given

2.) CM=MD 2.) Definition of midpoint

3.) 5x-2=3x+2 3.) Substitution

4.) 2x-2=2 4.) Subtraction Property of Equality

5.) 2x=4 5.) Subtraction Property of Equality

6.) x=2 6.) Division Property of Equality

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2 years ago

The ratio 14:18 is equivalent to which of the following?

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2 years ago

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Step-by-step explanation:

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3 years ago

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Lelechka [254]

Answer:

The degrees of freedom for this sample are 27.

The sample size to get a margin of error equal or less than 0.3656 is n=4450.

Step-by-step explanation:

The degrees of freedom for calculating the value of t are:

$df=n-1=28-1=27$

With 27 degrees of freedom and 95% confidence level, from a table we can get that the t-value is t=2.052.

The sample size to get a margin of error equal or less than 0.3656 can be calculated as:

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2 years ago