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Colt1911 [192]
2 years ago
13

Imagine your friend is writing an argument to convince adults that they should allow teens to own and use smartphones. Read her

argument excerpt and answer the question that follows: Parents should allow teens to own smartphones. To not do so is just dumb in this day and age. Edudemic.com reported in 2012 that smartphone ownership was rising. Dr. Meryl Ain notes that nearly 8 out of 10 teens own a cell phone and 37 percent own a smartphone. More than 70 percent of students who own one use apps for learning and studying. Students without such a device and tools are at a disadvantage compared to their peers. Their parents obviously don't truly care about their education. Which of the following is true about this argument excerpt? It is respectful in tone to the audience and supports its claim with specific, credible evidence. It contains specific, credible evidence but uses a disrespectful tone that should be revised. It fails to support its claim with specific, credible evidence and uses a disrespectful tone. It uses a respectful tone but needs specific, credible evidence to support the claim.
Mathematics
1 answer:
Blababa [14]2 years ago
5 0
I think it is the 2nd one

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Consider the system of linear equations. 5x+10y=15 10x+3y=13 To use the linear combination method and addition to eliminate the
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Answer:

  A:  -2

Step-by-step explanation:

You want some factor k such that k(5x) +(10x) = 0. That is, 5k+10 = 0. The solution to this is k=-2, corresponding to selection A.

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1 year ago
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These two triangles are similar. What are a and b? Note: the two figures are not drawn to scale. Please help with this!!!
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Answer:

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  • b = 22.5

Step-by-step explanation:

The ratio of smallest sides in the two triangles is ...

  smaller / larger = 4/10

To find A and B, we write proportions involving corresponding side lengths.

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Side A in the smaller triangle is ...

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Answer:

The cities are approximately 1452 km apart

Step-by-step explanation:

The two cities are on the same Longitude 90°W therefore the distance between them is on a great circle

Latitude of the first city = 23°N

Latitude of the second city = 36° N

Because their latitude are on the same polar axis, we subtract to get the angular difference

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Distance= \frac{13}{360} X 2\pi X 6400=1452.11km

The cities are approximately 1452 km apart

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