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2 years ago

Name the similar triangles. ΔABC ~ ΔDEF ΔABC ~ ΔEFD ΔABC ~ ΔDFE ΔABC ~ ΔFED

Mathematics

1 answer:

IgorLugansk [536]2 years ago

7 0

Triangle ABC because the other ones are different from each other and there is only one of them.

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Researchers have a sample size of 24 , and they are using the Student's t-distribution. What are the degrees of freedom and how

DerKrebs [107]

Answer:

For this case assuming that the random variable is X

$df = n-1$

And replacing n = 24 we got:

$df = 24-1=23$

And we notate the distribution we got: $X \sim t_{n-1}= t_{23}$

Step-by-step explanation:

Previous concepts

The t distribution (Student’s t-distribution) is a "probability distribution that is used to estimate population parameters when the sample size is small (n<30) or when the population variance is unknown".

The shape of the t distribution is determined by its degrees of freedom and when the degrees of freedom increase the t distirbution becomes a normal distribution approximately.

The degrees of freedom represent "the number of independent observations in a set of data. For example if we estimate a mean score from a single sample, the number of independent observations would be equal to the sample size minus one."

Solution to the problem

For this case assuming that the random variable is X

$df = n-1$

And replacing n = 24 we got:

$df = 24-1=23$

And we notate the distribution we got: $X \sim t_{n-1}= t_{23}$

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1 year ago

Malia split up the large container of salsa that she bought into 5 bowls to place around her house for the party if each Bowl co

Hoochie [10]

Answer:

You never gave the answer choices but it should look something like this.

5 ⋅ 8.5 = x

x / 5 = 8.5

as for x. X=42.5

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2 years ago

How many triples of the 3 positive integers (x,y,z) are products of 24

GalinKa [24]

8,8,8 would be the answer

3 0

1 year ago

A poll conducted a week before the school election to the student council showed that Janice would win with 63% of the vote. The

k0ka [10]

OPTIONS:

No, because she could receive as low as 14% of the vote.

No, because she could receive as low as 49% of the vote.

Yes, because she could receive as much as 77% of the vote.

Yes, because the poll stated that she will win with 63% of the vote.

Answer:

No, because she could receive as low as 49% of the vote.

Step-by-step explanation:

Given that:

Poll suggestion = 63%

Margin of Error (E) = 14%

This means that; the range or interval in which the vote obtained could fall would be ;

Poll suggestion ± margin of Error

63% ± 14%

Lower bound attainable = (63% - 14%) = 49%

Upper bound attainable = (63% + 14%) = 77%

Since, winning actually requires obtaining atleast half of the votes (that is 50%) ; and suggested poll suggested votes could fall as low as 49% ; then Janice can't be so confident of victory.

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1 year ago

Ilene who is not yet 21 years old, is two years older than ida

vagabundo [1.1K]

Answer:

whats the question you need answered?

Step-by-step explanation:

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1 year ago

Name the similar triangles.￼ ΔABC ~ ΔDEF ΔABC ~ ΔEFD ΔABC ~ ΔDFE ΔABC ~ ΔFED​

Name the similar triangles. ΔABC ~ ΔDEF ΔABC ~ ΔEFD ΔABC ~ ΔDFE ΔABC ~ ΔFED