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3 years ago

90. The number of daily evening newspapers in the United States has decreased by 46.5% to

Mathematics

1 answer:

aleksandr82 [10.1K]3 years ago

7 0

Answer:

700

Step-by-step explanation:

Given:

Daily evening newspapers in 2015 = 389

Percentage decrease from 2000 to 2015 = 46.5%

To find:

Number of newspapers in 2000 = ?

Solution:

Let the number of newspapers in 2000 = $x$

When 46.5% of the total newspapers in 2000 ( $x$ ) is subtracted from the total newspapers in 2000 ( $x$ ), it will be equal to the number of newspapers in 2015.

Making the equation as per the given statement:

$x-x\times 46.5\%=389\\\Rightarrow \dfrac{100x-46.5x}{100}=389\\\Rightarrow 53.5x=38900\\\Rightarrow x\approx \bold{727}$

Therefore, the answer is:

There were <em>727 </em>newspapers in 2000.

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Answer:

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3 years ago

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3 years ago

To factor the quadratic expression x^2−8x−10 by completing the square, what value would be added? A. 64 B. 8 C. 16 D.-16

Elan Coil [88]

Answer:

Step-by-step explanation:

When completing the square, we essentially want to create a perfect square trinomial by adding a constant.

If we have the following expression:

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Thus, the added term should be:

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The value we would add would be 16.

The answer is C.

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To complete the square, add 16 like mentioned earlier. However, we also need to subtract 16 to balance things out:

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3 years ago

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dlinn [17]

Answer:

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