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gregori [183]
3 years ago
9

1A) When f(n) = 12, what is the value of n?

Mathematics
1 answer:
mr_godi [17]3 years ago
8 0

Answer:

Can't answer this

Step-by-step explanation:

For this question, I think you need to read more informations, find out the function

After you find out the function,

Replace f(x) as 12 and replace x with n

After that, try to solve it.

Good luck.

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The numbers of pages in the books in a library follow a normal distribution. If the mean number of pages is 180 and the standard
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Answer:

option B.

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Step-by-step explanation:

Since we are dealing with a normal distribution

68.27% of the values will fall in the range with the standard deviation

(180-30 , 180+30) = (150, 210)

Approximately 15.86% of the values will be higher than 210

and the rest 15.86% will be lower than 150

So the correct answer is option B.

About 16% of the books have fewer than 150 pages

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3 years ago
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The length of a rectangle is 4 yd more than twice the width x. The area is 390
masya89 [10]

Step-by-step explanation:

step 1. let l be the length of the rectangle

step 2. l = 2x + 4

step 3. lx = 390 yd^2

step 4. (2x + 4)x = 390

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step 6. 2x^2 + 4x - 390 = 0

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3 years ago
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