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2 years ago

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Wendy is arranging books on the bookshelves in the school library. The total number of books she arranges is given by the equati

on b = 12r, where b is the total number of books and r is the number of rows. Each row contains the same number of books.
If Wendy arranged 16 rows, she arranged a total of
books.

2 answers:

horrorfan [7]2 years ago

7 0

You would do 16x12 which is 192

Basile [38]2 years ago

6 0

Given:
b = 12r
where:
b = represents the total number of books
12 = number of books per row
r = number of rows

If Wendy arranged 16 rows, she arranged a total of ___ books.

b = 12r
b = 12(16)
b = 192 total number of books arranged.

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Step-by-step explanation:

The given function is

$I(t)=-3\cos (\frac{2\pi}{365}(t+10))+12$

where I(t) the length of the day in Boulder and l is given in hours and t is the day of the year.

(a)

Substitute t=355 in given function.

$I(355)=-3\cos (\frac{2\pi}{365}(355+10))+12$

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$I'(t)=\frac{6\pi}{365}\sin (\frac{2\pi}{365}(265+10))$

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Therefore, the value of I'(265) is −0.05163. It means the length of the day in Boulder decreased by 0.05163 hours at 265 day of the year.

(c)

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Equate $I''(t)=0$ to find critical points.

$\frac{12\pi^2}{(365)^2}\cos (\frac{2\pi}{365}(t+10))=0$

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