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3 years ago

Please help with the question in the attachment. Do not give an improper answer or you will be reported.

Mathematics

1 answer:

____ [38]3 years ago

3 0

9514 1404 393

Answer:

2876 books

Step-by-step explanation:

If we let y1 and y2 represent the costs from method 1 and method 2, then we have, for x books published, ...

y1 = 12841 +24.25x

y2 = 48072 +12x

These costs will be equal when ...

y1 = y2

12841 +24.25x = 48072 +12x

12.25x = 35231 . . . . . . . . . . . . . subtract 12841+12x

x = 2876 . . . . . . . . . . divide by 12.25

The costs will be the same for production of 2876 books.

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Step-by-step explanation:

Given that,

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We need to find the dimensions of the iPhone. It is in the shape of a rectangle. Its area is given by :

$A=l\times b\\\\(x-2)(x+3)=14\\\\x^2-2x+3x-6=14\\\\x^2+x-6-14=0\\\\x^2+x-20=0\\\\x^2+5x-4x-20=0\\\\x(x+5)-4(x+5)=0\\\\(x-4)(x+5)=0\\\\x=4\ and\ x=-5$

Neglecting negative value

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Other dimension = (x+3) = (4+3) = 7 inches

Hence, the dimensions of the iphone are 2 inches by 7 inches.

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