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grandymaker [24]
3 years ago
11

A book designer decided that the pages of a book should have 1-in. margins at the top and bottom and 1 2 in. margins on the side

s. She further stipulated that each page should have an area of 50 in.2. Find a function in the variable x, giving the area of the printed region
Mathematics
1 answer:
alexgriva [62]3 years ago
5 0

Answer:

A = 54.8 - (1200/x) - 2x

Step-by-step explanation:

Given <em>x</em> the wide and <em>y</em> the height, we have

x*y = 50

⇒  y = 50/x

The area of the printed region is A = w*h

where

Wide: w = (x-2*1.2) = x-2.4

Height: h= (y-2*1) = y-2

then

A = (x-2.4)(y-2) = xy - 2.4y - 2x + 4.8 = 50 - 24*(50/x) - 2x + 4.8

⇒  A = 54.8 - (1200/x) - 2x

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<u>Problem 4:</u>  Option C, 32

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