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madam [21]
3 years ago
6

When Sam’s science teacher assigns the class some online reading assignments about marine biology, Sam races home after school.

He is excited to start reading—he wants to learn as much as he can about the subject because he is planning a career in marine biology. He studies the reading material closely, memorizing the difficult words and taking many notes. When it comes time for the test, he gets a high grade, improving his overall class grade as a result.
What is the main reason Sam is so actively engaged with the text he is reading?

He wants to do well on the upcoming test.
He needs to increase his understanding of difficult vocabulary.
He wants to improve his overall class grade.
He is highly interested in the subject matter.
SAT
2 answers:
Nonamiya [84]3 years ago
6 0

Answer:

D) He is highly interested in the subject matter.

Explanation:

Nady [450]3 years ago
4 0

Answer:

D

Explanation:

It makes the most sense

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Twice the sum of 10 and a number is 28. Find the number.
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An ellipse is represented by the equation . each directrix of this ellipse is a ________________________ from the center on the
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The true statement about the directrix is that each directrix of this ellipse is 31.25 units from the center on the major axis.

<h3>How to determine the distance of the directrix?</h3>

The equation of the ellipse is given as:

\frac{(x - 5)^2}{625} -\frac{(y - 4)^2}{225} =1

The above means that:

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b^2 = 225

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c^2 = a^2 - b^2

This gives

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c^2 = 400

Evaluate the square root

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The equation of the directrix is

x - x₀ = ± a²/c

So, we have:

x - x₀ = ± 625/20

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x - x₀ = ± 31.25

This means that, each directrix is 31.25 units from the center on the major axis.

Read more about directrix at:

brainly.com/question/26109874

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