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3 years ago

The temperature in Allenville fell from 25°F to -23°F in 8 minutes. What's the average change in temperature per minute?

Mathematics

1 answer:

natka813 [3]3 years ago

6 0

Answer:

6 Degrees per minute

Step-by-step explanation:

25 + 23 = 48

48 divided by 8 = 6

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4. Which of the following lines is perpendicular to y = -2X + 8?

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For this case we have to by definition, if two lines are perpendicular then the product of its slopes is -1.

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$y = -2x + 8$

So:

$m_ {1} = - 2$

Thus:

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Thus, a line perpendicular to the given line must have slope $m = \frac {1} {2}.$

Option A:

$x + 2y = 8\\2y = -x + 8\\y = - \frac {1} {2} x + 4$

It is not perpendicular!

Option B:

$x-2y = 6\\2y = x-6\\y = \frac {1} {2} x-3$

If it is perpendicular!

Option C:

$2x + y = 4\\y = -2x + 4$

It is not perpendicular!

Option D:

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It is not perpendicular!

The correct option is option B

ANswer:

Option B

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3 years ago

The temperature in Allenville fell from 25°F to -23°F in 8 minutes. What's the average change in temperature per minute?​

The temperature in Allenville fell from 25°F to -23°F in 8 minutes. What's the average change in temperature per minute?